diff --git a/platforms/android/arm64-v8a/build.sh b/platforms/android/arm64-v8a/build.sh
new file mode 100755
index 0000000..4dea8cc
--- /dev/null
+++ b/platforms/android/arm64-v8a/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh android arm64-v8a
diff --git a/platforms/android/arm64-v8a/external.sh b/platforms/android/arm64-v8a/external.sh
index 2047256..e922d4a 100755
--- a/platforms/android/arm64-v8a/external.sh
+++ b/platforms/android/arm64-v8a/external.sh
@@ -6,9 +6,12 @@ source ./platforms/config.sh
 
 echo "Building libraries..."
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 if [[ $(uname) == "Linux" ]]; then
@@ -19,17 +22,20 @@ else
    NUM_PROCS=1
 fi
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/android/arm64-v8a \
+   third-party/runtime-libs/android/arm64-v8a
 cd external
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/android/arm64-v8a/external.sh
 cmake \
@@ -40,12 +46,12 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/runtime-libs/android/arm64-v8a/libsockpp.so ../../third-party/runtime-libs/android/arm64-v8a/
-cp build/libzedmd.so ../../third-party/runtime-libs/android/arm64-v8a/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/runtime-libs/android/arm64-v8a/libsockpp.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/android/arm64-v8a/
+cp build/libzedmd.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/android/arm64-v8a/
 cp -r test ../../
 cd ..
 
@@ -53,9 +59,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=android \
@@ -65,13 +69,13 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/libserum.so ../../third-party/runtime-libs/android/arm64-v8a/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libserum.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/android/arm64-v8a/
 cd ..
 
 #
@@ -89,17 +93,15 @@ cmake -DPLATFORM=android \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp build/libpupdmd.so ../../third-party/runtime-libs/android/arm64-v8a/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libpupdmd.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/android/arm64-v8a/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/android/arm64-v8a/external.sh
 cmake \
@@ -110,6 +112,6 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp build/libvni.so ../../third-party/runtime-libs/android/arm64-v8a/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libvni.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/android/arm64-v8a/
 cd ..
diff --git a/platforms/build-common.sh b/platforms/build-common.sh
new file mode 100755
index 0000000..7276eeb
--- /dev/null
+++ b/platforms/build-common.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -e
+
+if [ "$#" -lt 2 ]; then
+   echo "Usage: $0 <platform> <arch> [extra-cmake-args...]"
+   exit 1
+fi
+
+PLATFORM_NAME="$1"
+ARCH_NAME="$2"
+shift 2
+
+if [ -z "${BUILD_TYPE}" ]; then
+   BUILD_TYPE="Release"
+fi
+
+EXTERNAL_SCRIPT="./platforms/${PLATFORM_NAME}/${ARCH_NAME}/external.sh"
+if [ -f "${EXTERNAL_SCRIPT}" ]; then
+   BUILD_TYPE=${BUILD_TYPE} "${EXTERNAL_SCRIPT}"
+fi
+
+if [ "${PLATFORM_NAME}" = "win" ]; then
+   if [ "${ARCH_NAME}" = "x86" ]; then
+      cmake -G "Visual Studio 17 2022" -A Win32 -DPLATFORM=${PLATFORM_NAME} -DARCH=${ARCH_NAME} "$@" -B build
+   else
+      cmake -G "Visual Studio 17 2022" -DPLATFORM=${PLATFORM_NAME} -DARCH=${ARCH_NAME} "$@" -B build
+   fi
+   cmake --build build --config ${BUILD_TYPE}
+elif [ "${PLATFORM_NAME}" = "win-mingw" ]; then
+   cmake -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DPLATFORM=${PLATFORM_NAME} -DARCH=${ARCH_NAME} "$@" -B build
+   cmake --build build -- -j$(nproc)
+else
+   cmake -DPLATFORM=${PLATFORM_NAME} -DARCH=${ARCH_NAME} -DCMAKE_BUILD_TYPE=${BUILD_TYPE} "$@" -B build
+   cmake --build build
+fi
diff --git a/platforms/config.sh b/platforms/config.sh
index 98bba73..6873bee 100755
--- a/platforms/config.sh
+++ b/platforms/config.sh
@@ -8,6 +8,58 @@ LIBPUPDMD_SHA=4a1123220e6dce73c87cc584494df2ac82cb6f4c
 LIBVNI_SHA=7258e2fa0d086e1224d6510d44a61879e6b344b1
 LIBUSB_SHA=15a7ebb4d426c5ce196684347d2b7cafad862626
 
+PROJECT_SOURCE_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
+
+dependency_source_dir() {
+   local var_name="$1"
+   local source_dir="${!var_name:-}"
+
+   if [ -z "${source_dir}" ]; then
+      return 0
+   fi
+
+   (cd "${PROJECT_SOURCE_ROOT}" && cd "${source_dir}" && pwd -P)
+}
+
+print_dependency_source() {
+   local label="$1"
+   local sha="$2"
+   local source_var="$3"
+   local source_dir
+
+   source_dir="$(dependency_source_dir "${source_var}")"
+   if [ -n "${source_dir}" ]; then
+      echo "  ${label}_SOURCE_DIR: ${source_dir}"
+   else
+      echo "  ${label}_SOURCE: archive ${sha}"
+   fi
+}
+
+prepare_dependency_source() {
+   local name="$1"
+   local sha="$2"
+   local url="$3"
+   local archive_type="${4:-tar}"
+   local source_var="$5"
+   local source_dir
+
+   source_dir="$(dependency_source_dir "${source_var}")"
+   if [ -n "${source_dir}" ]; then
+      echo "Using ${source_var}: ${source_dir}"
+      ln -s "${source_dir}" "${name}"
+   elif [ "${archive_type}" = "zip" ]; then
+      curl -sL "${url}" -o "${name}.zip"
+      unzip "${name}.zip"
+      mv "${name}-${sha}" "${name}"
+   else
+      curl -sL "${url}" -o "${name}-${sha}.tar.gz"
+      tar xzf "${name}-${sha}.tar.gz"
+      mv "${name}-${sha}" "${name}"
+   fi
+}
+
+
+
 if [ -z "${BUILD_TYPE}" ]; then
    BUILD_TYPE="Release"
 fi
diff --git a/platforms/ios-simulator/arm64/build.sh b/platforms/ios-simulator/arm64/build.sh
new file mode 100755
index 0000000..d863d57
--- /dev/null
+++ b/platforms/ios-simulator/arm64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh ios-simulator arm64
diff --git a/platforms/ios-simulator/arm64/external.sh b/platforms/ios-simulator/arm64/external.sh
index 0953bc1..6593a50 100755
--- a/platforms/ios-simulator/arm64/external.sh
+++ b/platforms/ios-simulator/arm64/external.sh
@@ -6,24 +6,30 @@ source ./platforms/config.sh
 
 echo "Building libraries..."
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(sysctl -n hw.ncpu)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/ios-simulator/arm64 \
+   third-party/runtime-libs/ios-simulator/arm64
 cd external
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/ios-simulator/arm64/external.sh
 cmake \
@@ -34,12 +40,12 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp -a third-party/build-libs/ios-simulator/arm64/libsockpp.a ../../third-party/build-libs/ios-simulator/arm64/
-cp build/libzedmd.a ../../third-party/build-libs/ios-simulator/arm64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a third-party/build-libs/ios-simulator/arm64/libsockpp.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios-simulator/arm64/
+cp build/libzedmd.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios-simulator/arm64/
 cp -r test ../../
 cd ..
 
@@ -47,9 +53,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=ios-simulator \
@@ -59,13 +63,13 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/libserum.a ../../third-party/build-libs/ios-simulator/arm64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libserum.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios-simulator/arm64/
 cd ..
 
 #
@@ -84,17 +88,15 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp build/libpupdmd.a ../../third-party/build-libs/ios-simulator/arm64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libpupdmd.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios-simulator/arm64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/ios-simulator/arm64/external.sh
 cmake \
@@ -105,6 +107,6 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp build/libvni.a ../../third-party/build-libs/ios-simulator/arm64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libvni.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios-simulator/arm64/
 cd ..
diff --git a/platforms/ios/arm64/build.sh b/platforms/ios/arm64/build.sh
new file mode 100755
index 0000000..4a261a9
--- /dev/null
+++ b/platforms/ios/arm64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh ios arm64
diff --git a/platforms/ios/arm64/external.sh b/platforms/ios/arm64/external.sh
index 06a7855..15eed99 100755
--- a/platforms/ios/arm64/external.sh
+++ b/platforms/ios/arm64/external.sh
@@ -6,24 +6,30 @@ source ./platforms/config.sh
 
 echo "Building libraries..."
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(sysctl -n hw.ncpu)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/ios/arm64 \
+   third-party/runtime-libs/ios/arm64
 cd external
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/ios/arm64/external.sh
 cmake \
@@ -34,12 +40,12 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp -a third-party/build-libs/ios/arm64/libsockpp.a ../../third-party/build-libs/ios/arm64/
-cp build/libzedmd.a ../../third-party/build-libs/ios/arm64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a third-party/build-libs/ios/arm64/libsockpp.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios/arm64/
+cp build/libzedmd.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios/arm64/
 cp -r test ../../
 cd ..
 
@@ -47,9 +53,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=ios \
@@ -59,13 +63,13 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/libserum.a ../../third-party/build-libs/ios/arm64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libserum.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios/arm64/
 cd ..
 
 #
@@ -84,17 +88,15 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp build/libpupdmd.a ../../third-party/build-libs/ios/arm64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libpupdmd.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios/arm64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/ios/arm64/external.sh
 cmake \
@@ -105,6 +107,6 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp build/libvni.a ../../third-party/build-libs/ios/arm64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libvni.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/ios/arm64/
 cd ..
diff --git a/platforms/linux/aarch64/build.sh b/platforms/linux/aarch64/build.sh
new file mode 100755
index 0000000..3e71c09
--- /dev/null
+++ b/platforms/linux/aarch64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh linux aarch64
diff --git a/platforms/linux/aarch64/external.sh b/platforms/linux/aarch64/external.sh
index e9214b6..973241d 100755
--- a/platforms/linux/aarch64/external.sh
+++ b/platforms/linux/aarch64/external.sh
@@ -7,15 +7,23 @@ source ./platforms/config.sh
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(nproc)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/linux/aarch64 \
+   third-party/runtime-libs/linux/aarch64
 cd external
 
 #
@@ -30,18 +38,16 @@ cd libusb
 ./configure \
    --enable-shared
 make -j${NUM_PROCS}
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp -a libusb/.libs/libusb-1.0.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp -a libusb/.libs/libusb-1.0.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/linux/aarch64/external.sh
 cmake \
@@ -53,16 +59,16 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/runtime-libs/linux/aarch64/libcargs.so ../../third-party/runtime-libs/linux/aarch64/
-cp -a third-party/runtime-libs/linux/aarch64/libserialport.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
-cp -a third-party/runtime-libs/linux/aarch64/libsockpp.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
-cp -a build/libzedmd.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/runtime-libs/linux/aarch64/libcargs.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
+cp -a third-party/runtime-libs/linux/aarch64/libserialport.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
+cp -a third-party/runtime-libs/linux/aarch64/libsockpp.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
+cp -a build/libzedmd.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
 cp -r test ../../
 cd ..
 
@@ -70,9 +76,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=linux \
@@ -82,13 +86,13 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp -a build/libserum.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libserum.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
 cd ..
 
 #
@@ -107,17 +111,15 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp -a build/libpupdmd.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libpupdmd.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/linux/aarch64/external.sh
 cmake \
@@ -128,6 +130,6 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp -a build/libvni.{so,so.*} ../../third-party/runtime-libs/linux/aarch64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libvni.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/aarch64/
 cd ..
diff --git a/platforms/linux/x64/build.sh b/platforms/linux/x64/build.sh
new file mode 100755
index 0000000..be4359d
--- /dev/null
+++ b/platforms/linux/x64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh linux x64
diff --git a/platforms/linux/x64/external.sh b/platforms/linux/x64/external.sh
index 2661ed1..6d770bf 100755
--- a/platforms/linux/x64/external.sh
+++ b/platforms/linux/x64/external.sh
@@ -7,15 +7,23 @@ source ./platforms/config.sh
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(nproc)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/linux/x64 \
+   third-party/runtime-libs/linux/x64
 cd external
 
 #
@@ -30,18 +38,16 @@ cd libusb
 ./configure \
    --enable-shared
 make -j${NUM_PROCS}
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp -a libusb/.libs/libusb-1.0.{so,so.*} ../../third-party/runtime-libs/linux/x64/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp -a libusb/.libs/libusb-1.0.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/linux/x64/external.sh
 cmake \
@@ -52,16 +58,16 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/runtime-libs/linux/x64/libcargs.so ../../third-party/runtime-libs/linux/x64/
-cp -a third-party/runtime-libs/linux/x64/libserialport.{so,so.*} ../../third-party/runtime-libs/linux/x64/
-cp -a third-party/runtime-libs/linux/x64/libsockpp.{so,so.*} ../../third-party/runtime-libs/linux/x64/
-cp -a build/libzedmd.{so,so.*} ../../third-party/runtime-libs/linux/x64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/runtime-libs/linux/x64/libcargs.so ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
+cp -a third-party/runtime-libs/linux/x64/libserialport.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
+cp -a third-party/runtime-libs/linux/x64/libsockpp.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
+cp -a build/libzedmd.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
 cp -r test ../../
 cd ..
 
@@ -69,9 +75,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=linux \
@@ -81,13 +85,13 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp -a build/libserum.{so,so.*} ../../third-party/runtime-libs/linux/x64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libserum.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
 cd ..
 
 #
@@ -106,17 +110,15 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp -a build/libpupdmd.{so,so.*} ../../third-party/runtime-libs/linux/x64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libpupdmd.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/linux/x64/external.sh
 cmake \
@@ -127,6 +129,6 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp -a build/libvni.{so,so.*} ../../third-party/runtime-libs/linux/x64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libvni.{so,so.*} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/linux/x64/
 cd ..
diff --git a/platforms/macos/arm64/build.sh b/platforms/macos/arm64/build.sh
new file mode 100755
index 0000000..9743dfb
--- /dev/null
+++ b/platforms/macos/arm64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh macos arm64
diff --git a/platforms/macos/arm64/external.sh b/platforms/macos/arm64/external.sh
index e50850a..7130bf4 100755
--- a/platforms/macos/arm64/external.sh
+++ b/platforms/macos/arm64/external.sh
@@ -4,18 +4,27 @@ set -e
 
 source ./platforms/config.sh
 
+export MACOSX_DEPLOYMENT_TARGET="${MACOSX_DEPLOYMENT_TARGET:-${PPUC_MACOS_DEPLOYMENT_TARGET:-$(xcrun --sdk macosx --show-sdk-version 2>/dev/null || echo 14.0)}}"
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(sysctl -n hw.ncpu)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/macos/arm64 \
+   third-party/runtime-libs/macos/arm64
 cd external
 
 #
@@ -29,21 +38,19 @@ cd libusb
 ./autogen.sh
 ./configure \
    --host=arm-apple-darwin \
-   CFLAGS="-arch arm64" \
-   LDFLAGS="-Wl,-install_name,@rpath/libusb-1.0.dylib"
+   CFLAGS="-arch arm64 -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" \
+   LDFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -Wl,-install_name,@rpath/libusb-1.0.dylib"
 make -j${NUM_PROCS}
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp -a libusb/.libs/libusb*.dylib ../../third-party/runtime-libs/macos/arm64/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp -a libusb/.libs/libusb*.dylib ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/macos/arm64/external.sh
 cmake \
@@ -53,19 +60,21 @@ cmake \
    -DBUILD_STATIC=OFF \
    -DCMAKE_C_VISIBILITY_PRESET=default \
    -DCMAKE_CXX_VISIBILITY_PRESET=default \
+   -DCMAKE_OSX_ARCHITECTURES=arm64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/runtime-libs/macos/arm64/libcargs.dylib ../../third-party/runtime-libs/macos/arm64/
-cp -a third-party/runtime-libs/macos/arm64/libserialport.{dylib,*.dylib} ../../third-party/runtime-libs/macos/arm64/
-cp -a third-party/runtime-libs/macos/arm64/libsockpp.{dylib,*.dylib} ../../third-party/runtime-libs/macos/arm64/
-cp -a build/libzedmd.{dylib,*.dylib} ../../third-party/runtime-libs/macos/arm64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/runtime-libs/macos/arm64/libcargs.dylib ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
+cp -a third-party/runtime-libs/macos/arm64/libserialport.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
+cp -a third-party/runtime-libs/macos/arm64/libsockpp.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
+cp -a build/libzedmd.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
 cp -r test ../../
 cd ..
 
@@ -73,25 +82,25 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=macos \
    -DARCH=arm64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=arm64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp -a build/libserum.{dylib,*.dylib} ../../third-party/runtime-libs/macos/arm64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libserum.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
 cd ..
 
 #
@@ -107,20 +116,20 @@ cmake \
    -DARCH=arm64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=arm64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp -a build/libpupdmd.{dylib,*.dylib} ../../third-party/runtime-libs/macos/arm64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libpupdmd.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/macos/arm64/external.sh
 cmake \
@@ -128,9 +137,11 @@ cmake \
    -DARCH=arm64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=arm64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp -a build/libvni.{dylib,*.dylib} ../../third-party/runtime-libs/macos/arm64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libvni.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/arm64/
 cd ..
diff --git a/platforms/macos/x64/build.sh b/platforms/macos/x64/build.sh
new file mode 100755
index 0000000..3f0546e
--- /dev/null
+++ b/platforms/macos/x64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh macos x64
diff --git a/platforms/macos/x64/external.sh b/platforms/macos/x64/external.sh
index 980f5e4..e2a2501 100755
--- a/platforms/macos/x64/external.sh
+++ b/platforms/macos/x64/external.sh
@@ -4,18 +4,27 @@ set -e
 
 source ./platforms/config.sh
 
+export MACOSX_DEPLOYMENT_TARGET="${MACOSX_DEPLOYMENT_TARGET:-${PPUC_MACOS_DEPLOYMENT_TARGET:-$(xcrun --sdk macosx --show-sdk-version 2>/dev/null || echo 14.0)}}"
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(sysctl -n hw.ncpu)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/macos/x64 \
+   third-party/runtime-libs/macos/x64
 cd external
 
 #
@@ -29,21 +38,19 @@ cd libusb
 ./autogen.sh
 ./configure \
    --host=x86_64-apple-darwin \
-   CFLAGS="-arch x86_64" \
-   LDFLAGS="-Wl,-install_name,@rpath/libusb-1.0.dylib"
+   CFLAGS="-arch x86_64 -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" \
+   LDFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -Wl,-install_name,@rpath/libusb-1.0.dylib"
 make -j${NUM_PROCS}
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp -a libusb/.libs/libusb*.dylib ../../third-party/runtime-libs/macos/x64/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp -a libusb/.libs/libusb*.dylib ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/macos/x64/external.sh
 cmake \
@@ -51,19 +58,21 @@ cmake \
    -DARCH=x64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=x86_64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/runtime-libs/macos/x64/libcargs.dylib ../../third-party/runtime-libs/macos/x64/
-cp -a third-party/runtime-libs/macos/x64/libserialport.{dylib,*.dylib} ../../third-party/runtime-libs/macos/x64/
-cp -a third-party/runtime-libs/macos/x64/libsockpp.{dylib,*.dylib} ../../third-party/runtime-libs/macos/x64/
-cp -a build/libzedmd.{dylib,*.dylib} ../../third-party/runtime-libs/macos/x64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/runtime-libs/macos/x64/libcargs.dylib ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
+cp -a third-party/runtime-libs/macos/x64/libserialport.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
+cp -a third-party/runtime-libs/macos/x64/libsockpp.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
+cp -a build/libzedmd.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
 cp -r test ../../
 cd ..
 
@@ -71,25 +80,25 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=macos \
    -DARCH=x64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=x86_64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp -a build/libserum.{dylib,*.dylib} ../../third-party/runtime-libs/macos/x64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libserum.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
 cd ..
 
 #
@@ -105,20 +114,20 @@ cmake \
    -DARCH=x64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=x86_64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp -a build/libpupdmd.{dylib,*.dylib} ../../third-party/runtime-libs/macos/x64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libpupdmd.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/macos/x64/external.sh
 cmake \
@@ -126,9 +135,11 @@ cmake \
    -DARCH=x64 \
    -DBUILD_SHARED=ON \
    -DBUILD_STATIC=OFF \
+   -DCMAKE_OSX_ARCHITECTURES=x86_64 \
+   -DCMAKE_OSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET} \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp -a build/libvni.{dylib,*.dylib} ../../third-party/runtime-libs/macos/x64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a build/libvni.{dylib,*.dylib} ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/macos/x64/
 cd ..
diff --git a/platforms/tvos/arm64/build.sh b/platforms/tvos/arm64/build.sh
new file mode 100755
index 0000000..24aec36
--- /dev/null
+++ b/platforms/tvos/arm64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh tvos arm64
diff --git a/platforms/tvos/arm64/external.sh b/platforms/tvos/arm64/external.sh
index 0f6dfeb..09f8d60 100755
--- a/platforms/tvos/arm64/external.sh
+++ b/platforms/tvos/arm64/external.sh
@@ -6,24 +6,30 @@ source ./platforms/config.sh
 
 echo "Building libraries..."
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(sysctl -n hw.ncpu)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/tvos/arm64 \
+   third-party/runtime-libs/tvos/arm64
 cd external
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/tvos/arm64/external.sh
 cmake \
@@ -34,12 +40,12 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp -a third-party/build-libs/tvos/arm64/libsockpp.a ../../third-party/build-libs/tvos/arm64/
-cp build/libzedmd.a ../../third-party/build-libs/tvos/arm64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -a third-party/build-libs/tvos/arm64/libsockpp.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/tvos/arm64/
+cp build/libzedmd.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/tvos/arm64/
 cp -r test ../../
 cd ..
 
@@ -47,9 +53,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DPLATFORM=tvos \
@@ -59,13 +63,13 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/libserum.a ../../third-party/build-libs/tvos/arm64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libserum.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/tvos/arm64/
 cd ..
 
 #
@@ -84,17 +88,15 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp build/libpupdmd.a ../../third-party/build-libs/tvos/arm64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libpupdmd.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/tvos/arm64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/tvos/arm64/external.sh
 cmake \
@@ -105,6 +107,6 @@ cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp build/libvni.a ../../third-party/build-libs/tvos/arm64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/libvni.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/tvos/arm64/
 cd ..
diff --git a/platforms/win-mingw/x64/build.sh b/platforms/win-mingw/x64/build.sh
new file mode 100755
index 0000000..195abc5
--- /dev/null
+++ b/platforms/win-mingw/x64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh win-mingw x64
diff --git a/platforms/win-mingw/x64/external.sh b/platforms/win-mingw/x64/external.sh
index 449db16..89ab0c8 100755
--- a/platforms/win-mingw/x64/external.sh
+++ b/platforms/win-mingw/x64/external.sh
@@ -7,15 +7,23 @@ source ./platforms/config.sh
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
 NUM_PROCS=$(nproc)
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/win-mingw/x64 \
+   third-party/runtime-libs/win-mingw/x64
 cd external
 
 #
@@ -36,19 +44,17 @@ sed -i.bak 's/libusb-1\.0/libusb64-1.0/g' libusb/libusb64-1.0.rc
 ./configure \
    --enable-shared
 make -j${NUM_PROCS}
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp libusb/.libs/libusb64-1.0.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp libusb/.libs/libusb64-1.0.dll ../../third-party/runtime-libs/win-mingw/x64/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/.libs/libusb64-1.0.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp libusb/.libs/libusb64-1.0.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/win-mingw/x64/external.sh
 cmake \
@@ -59,20 +65,20 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/build-libs/win-mingw/x64/libcargs64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp third-party/runtime-libs/win-mingw/x64/libcargs64.dll ../../third-party/runtime-libs/win-mingw/x64/
-cp third-party/build-libs/win-mingw/x64/libserialport64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp third-party/runtime-libs/win-mingw/x64/libserialport64-0.dll ../../third-party/runtime-libs/win-mingw/x64/
-cp third-party/build-libs/win-mingw/x64/libsockpp64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp third-party/runtime-libs/win-mingw/x64/libsockpp64.dll ../../third-party/runtime-libs/win-mingw/x64/
-cp build/zedmd64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp build/zedmd64.dll ../../third-party/runtime-libs/win-mingw/x64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/build-libs/win-mingw/x64/libcargs64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp third-party/runtime-libs/win-mingw/x64/libcargs64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
+cp third-party/build-libs/win-mingw/x64/libserialport64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp third-party/runtime-libs/win-mingw/x64/libserialport64-0.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
+cp third-party/build-libs/win-mingw/x64/libsockpp64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp third-party/runtime-libs/win-mingw/x64/libsockpp64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
+cp build/zedmd64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp build/zedmd64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
 cp -r test ../../
 cd ..
 
@@ -80,9 +86,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
@@ -92,14 +96,14 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/serum64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp build/serum64.dll ../../third-party/runtime-libs/win-mingw/x64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/serum64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp build/serum64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
 cd ..
 
 #
@@ -118,18 +122,16 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/pupdmd.h ../../third-party/include/
-cp build/pupdmd64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp build/pupdmd64.dll ../../third-party/runtime-libs/win-mingw/x64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/pupdmd64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp build/pupdmd64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/win-mingw/x64/external.sh
 cmake \
@@ -140,9 +142,9 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build -- -j${NUM_PROCS}
-cp src/vni.h ../../third-party/include/
-cp build/vni64.dll.a ../../third-party/build-libs/win-mingw/x64/
-cp build/vni64.dll ../../third-party/runtime-libs/win-mingw/x64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/vni64.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win-mingw/x64/
+cp build/vni64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
 cd ..
 
 #
@@ -151,6 +153,6 @@ cd ..
 
 UCRT64_BIN="${MINGW_PREFIX}/bin"
 
-cp "${UCRT64_BIN}/libgcc_s_seh-1.dll" ../third-party/runtime-libs/win-mingw/x64/
-cp "${UCRT64_BIN}/libstdc++-6.dll" ../third-party/runtime-libs/win-mingw/x64/
-cp "${UCRT64_BIN}/libwinpthread-1.dll" ../third-party/runtime-libs/win-mingw/x64/
+cp "${UCRT64_BIN}/libgcc_s_seh-1.dll" ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
+cp "${UCRT64_BIN}/libstdc++-6.dll" ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
+cp "${UCRT64_BIN}/libwinpthread-1.dll" ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win-mingw/x64/
diff --git a/platforms/win/x64/build.sh b/platforms/win/x64/build.sh
new file mode 100755
index 0000000..a259ccd
--- /dev/null
+++ b/platforms/win/x64/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh win x64
diff --git a/platforms/win/x64/external.sh b/platforms/win/x64/external.sh
index a206e7e..af124ba 100755
--- a/platforms/win/x64/external.sh
+++ b/platforms/win/x64/external.sh
@@ -14,13 +14,21 @@ source ./platforms/config.sh
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/win/x64 \
+   third-party/runtime-libs/win/x64
 cd external
 
 #
@@ -44,19 +52,17 @@ MSYSTEM=UCRT64 "${MSYS2_PATH}/usr/bin/bash.exe" -l -c "
    ./configure --enable-shared &&
    make -j\$(nproc)
 "
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp libusb/.libs/libusb64-1.0.dll.a ../../third-party/build-libs/win/x64/libusb64-1.0.lib
-cp libusb/.libs/libusb64-1.0.dll ../../third-party/runtime-libs/win/x64/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/.libs/libusb64-1.0.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/libusb64-1.0.lib
+cp libusb/.libs/libusb64-1.0.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/win/x64/external.sh
 cmake \
@@ -67,23 +73,23 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/build-libs/win/x64/cargs64.lib ../../third-party/build-libs/win/x64/
-cp third-party/runtime-libs/win/x64/cargs64.dll ../../third-party/runtime-libs/win/x64/
-cp third-party/build-libs/win/x64/libserialport64.lib ../../third-party/build-libs/win/x64/
-cp third-party/runtime-libs/win/x64/libserialport64-0.dll ../../third-party/runtime-libs/win/x64/
-cp third-party/build-libs/win/x64/sockpp64.lib ../../third-party/build-libs/win/x64/
-cp third-party/runtime-libs/win/x64/sockpp64.dll ../../third-party/runtime-libs/win/x64/
-cp third-party/runtime-libs/win/x64/libgcc_s_seh-1.dll ../../third-party/runtime-libs/win/x64/
-cp third-party/runtime-libs/win/x64/libstdc++-6.dll ../../third-party/runtime-libs/win/x64/
-cp third-party/runtime-libs/win/x64/libwinpthread-1.dll ../../third-party/runtime-libs/win/x64/
-cp build/${BUILD_TYPE}/zedmd64.lib ../../third-party/build-libs/win/x64/
-cp build/${BUILD_TYPE}/zedmd64.dll ../../third-party/runtime-libs/win/x64/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/build-libs/win/x64/cargs64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp third-party/runtime-libs/win/x64/cargs64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
+cp third-party/build-libs/win/x64/libserialport64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp third-party/runtime-libs/win/x64/libserialport64-0.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
+cp third-party/build-libs/win/x64/sockpp64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp third-party/runtime-libs/win/x64/sockpp64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
+cp third-party/runtime-libs/win/x64/libgcc_s_seh-1.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
+cp third-party/runtime-libs/win/x64/libstdc++-6.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
+cp third-party/runtime-libs/win/x64/libwinpthread-1.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
+cp build/${BUILD_TYPE}/zedmd64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp build/${BUILD_TYPE}/zedmd64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
 cp -r test ../../
 cd ..
 
@@ -91,9 +97,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -G "Visual Studio 18 2026" \
@@ -103,14 +107,14 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/${BUILD_TYPE}/serum64.lib ../../third-party/build-libs/win/x64/
-cp build/${BUILD_TYPE}/serum64.dll ../../third-party/runtime-libs/win/x64/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/${BUILD_TYPE}/serum64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp build/${BUILD_TYPE}/serum64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
 cd ..
 
 #
@@ -129,18 +133,16 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp src/pupdmd.h ../../third-party/include/
-cp build/${BUILD_TYPE}/pupdmd64.lib ../../third-party/build-libs/win/x64/
-cp build/${BUILD_TYPE}/pupdmd64.dll ../../third-party/runtime-libs/win/x64/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/${BUILD_TYPE}/pupdmd64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp build/${BUILD_TYPE}/pupdmd64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/win/x64/external.sh
 cmake \
@@ -151,7 +153,7 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp src/vni.h ../../third-party/include/
-cp build/${BUILD_TYPE}/vni64.lib ../../third-party/build-libs/win/x64/
-cp build/${BUILD_TYPE}/vni64.dll ../../third-party/runtime-libs/win/x64/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/${BUILD_TYPE}/vni64.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x64/
+cp build/${BUILD_TYPE}/vni64.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x64/
 cd ..
diff --git a/platforms/win/x86/build.sh b/platforms/win/x86/build.sh
new file mode 100755
index 0000000..46d0bdd
--- /dev/null
+++ b/platforms/win/x86/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e
+
+./platforms/build-common.sh win x86
diff --git a/platforms/win/x86/external.sh b/platforms/win/x86/external.sh
index 593addb..e6c33d6 100755
--- a/platforms/win/x86/external.sh
+++ b/platforms/win/x86/external.sh
@@ -14,13 +14,21 @@ source ./platforms/config.sh
 echo "Building libraries..."
 echo "  LIBUSB_SHA: ${LIBUSB_SHA}"
 echo "  LIBZEDMD_SHA: ${LIBZEDMD_SHA}"
+print_dependency_source LIBZEDMD "${LIBZEDMD_SHA}" LIBZEDMD_SOURCE_DIR
 echo "  LIBSERUM_SHA: ${LIBSERUM_SHA}"
+print_dependency_source LIBSERUM "${LIBSERUM_SHA}" LIBSERUM_SOURCE_DIR
 echo "  LIBPUPDMD_SHA: ${LIBPUPDMD_SHA}"
 echo "  LIBVNI_SHA: ${LIBVNI_SHA}"
+print_dependency_source LIBVNI "${LIBVNI_SHA}" LIBVNI_SOURCE_DIR
 echo ""
 
+
 rm -rf external
-mkdir external
+mkdir -p \
+   external \
+   third-party/include \
+   third-party/build-libs/win/x86 \
+   third-party/runtime-libs/win/x86
 cd external
 
 #
@@ -38,19 +46,17 @@ MSYSTEM=MINGW32 "${MSYS2_PATH}/usr/bin/bash.exe" -l -c "
    ./configure --enable-shared &&
    make -j\$(nproc)
 "
-mkdir -p ../../third-party/include/libusb-1.0
-cp libusb/libusb.h ../../third-party/include/libusb-1.0
-cp libusb/.libs/libusb-1.0.dll.a ../../third-party/build-libs/win/x86/libusb-1.0.lib
-cp libusb/.libs/libusb-1.0.dll ../../third-party/runtime-libs/win/x86/
+mkdir -p ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/libusb.h ${PROJECT_SOURCE_ROOT}/third-party/include/libusb-1.0
+cp libusb/.libs/libusb-1.0.dll.a ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/libusb-1.0.lib
+cp libusb/.libs/libusb-1.0.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
 cd ..
 
 #
 # build libzedmd and copy to external
 #
 
-curl -sL https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz -o libzedmd-${LIBZEDMD_SHA}.tar.gz
-tar xzf libzedmd-${LIBZEDMD_SHA}.tar.gz
-mv libzedmd-${LIBZEDMD_SHA} libzedmd
+prepare_dependency_source libzedmd "${LIBZEDMD_SHA}" "https://github.com/PPUC/libzedmd/archive/${LIBZEDMD_SHA}.tar.gz" tar LIBZEDMD_SOURCE_DIR
 cd libzedmd
 BUILD_TYPE=${BUILD_TYPE} platforms/win/x86/external.sh
 cmake \
@@ -62,23 +68,23 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp src/ZeDMD.h ../../third-party/include/
-cp third-party/include/libserialport.h ../../third-party/include/
-cp third-party/include/cargs.h ../../third-party/include/
-cp -r third-party/include/komihash ../../third-party/include/
-cp -r third-party/include/sockpp ../../third-party/include/
-cp third-party/include/FrameUtil.h ../../third-party/include/
-cp third-party/build-libs/win/x86/cargs.lib ../../third-party/build-libs/win/x86/
-cp third-party/runtime-libs/win/x86/cargs.dll ../../third-party/runtime-libs/win/x86/
-cp third-party/build-libs/win/x86/libserialport.lib ../../third-party/build-libs/win/x86/
-cp third-party/runtime-libs/win/x86/libserialport-0.dll ../../third-party/runtime-libs/win/x86/
-cp third-party/build-libs/win/x86/sockpp.lib ../../third-party/build-libs/win/x86/
-cp third-party/runtime-libs/win/x86/sockpp.dll ../../third-party/runtime-libs/win/x86/
-cp third-party/runtime-libs/win/x86/libgcc_s_dw2-1.dll ../../third-party/runtime-libs/win/x86/
-cp third-party/runtime-libs/win/x86/libstdc++-6.dll ../../third-party/runtime-libs/win/x86/
-cp third-party/runtime-libs/win/x86/libwinpthread-1.dll ../../third-party/runtime-libs/win/x86/
-cp build/${BUILD_TYPE}/zedmd.lib ../../third-party/build-libs/win/x86/
-cp build/${BUILD_TYPE}/zedmd.dll ../../third-party/runtime-libs/win/x86/
+cp src/ZeDMD.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/libserialport.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/cargs.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/komihash ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp -r third-party/include/sockpp ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/include/FrameUtil.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp third-party/build-libs/win/x86/cargs.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp third-party/runtime-libs/win/x86/cargs.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
+cp third-party/build-libs/win/x86/libserialport.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp third-party/runtime-libs/win/x86/libserialport-0.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
+cp third-party/build-libs/win/x86/sockpp.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp third-party/runtime-libs/win/x86/sockpp.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
+cp third-party/runtime-libs/win/x86/libgcc_s_dw2-1.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
+cp third-party/runtime-libs/win/x86/libstdc++-6.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
+cp third-party/runtime-libs/win/x86/libwinpthread-1.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
+cp build/${BUILD_TYPE}/zedmd.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp build/${BUILD_TYPE}/zedmd.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
 cp -r test ../../
 cd ..
 
@@ -86,9 +92,7 @@ cd ..
 # build libserum and copy to external
 #
 
-curl -sL https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz -o libserum-${LIBSERUM_SHA}.tar.gz
-tar xzf libserum-${LIBSERUM_SHA}.tar.gz
-mv libserum-${LIBSERUM_SHA} libserum
+prepare_dependency_source libserum "${LIBSERUM_SHA}" "https://github.com/PPUC/libserum/archive/${LIBSERUM_SHA}.tar.gz" tar LIBSERUM_SOURCE_DIR
 cd libserum
 cmake \
    -G "Visual Studio 18 2026" \
@@ -99,14 +103,14 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp -r third-party/include/lz4 ../../third-party/include/
-cp src/LZ4Stream.h ../../third-party/include/
-cp src/SceneGenerator.h ../../third-party/include/
-cp src/serum.h ../../third-party/include/
-cp src/TimeUtils.h ../../third-party/include/
-cp src/serum-decode.h ../../third-party/include/
-cp build/${BUILD_TYPE}/serum.lib ../../third-party/build-libs/win/x86/
-cp build/${BUILD_TYPE}/serum.dll ../../third-party/runtime-libs/win/x86/
+cp -r third-party/include/lz4 ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/LZ4Stream.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/SceneGenerator.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/TimeUtils.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp src/serum-decode.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/${BUILD_TYPE}/serum.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp build/${BUILD_TYPE}/serum.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
 cd ..
 
 #
@@ -126,18 +130,16 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp src/pupdmd.h ../../third-party/include/
-cp build/${BUILD_TYPE}/pupdmd.lib ../../third-party/build-libs/win/x86/
-cp build/${BUILD_TYPE}/pupdmd.dll ../../third-party/runtime-libs/win/x86/
+cp src/pupdmd.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/${BUILD_TYPE}/pupdmd.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp build/${BUILD_TYPE}/pupdmd.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
 cd ..
 
 #
 # build libvni and copy to external
 #
 
-curl -sL https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz -o libvni-${LIBVNI_SHA}.tar.gz
-tar xzf libvni-${LIBVNI_SHA}.tar.gz
-mv libvni-${LIBVNI_SHA} libvni
+prepare_dependency_source libvni "${LIBVNI_SHA}" "https://github.com/PPUC/libvni/archive/${LIBVNI_SHA}.tar.gz" tar LIBVNI_SOURCE_DIR
 cd libvni
 platforms/win/x86/external.sh
 cmake \
@@ -149,7 +151,7 @@ cmake \
    -DBUILD_STATIC=OFF \
    -B build
 cmake --build build --config ${BUILD_TYPE}
-cp src/vni.h ../../third-party/include/
-cp build/${BUILD_TYPE}/vni.lib ../../third-party/build-libs/win/x86/
-cp build/${BUILD_TYPE}/vni.dll ../../third-party/runtime-libs/win/x86/
+cp src/vni.h ${PROJECT_SOURCE_ROOT}/third-party/include/
+cp build/${BUILD_TYPE}/vni.lib ${PROJECT_SOURCE_ROOT}/third-party/build-libs/win/x86/
+cp build/${BUILD_TYPE}/vni.dll ${PROJECT_SOURCE_ROOT}/third-party/runtime-libs/win/x86/
 cd ..
diff --git a/src/DMD.cpp b/src/DMD.cpp
index 694676b..524061d 100644
--- a/src/DMD.cpp
+++ b/src/DMD.cpp
@@ -325,7 +325,11 @@ DMD::DMD()
   m_pDmdFrameThread = new std::thread(&DMD::DmdFrameThread, this);
   m_pPupDMDThread = new std::thread(&DMD::PupDMDThread, this);
   m_pSerumThread = new std::thread(&DMD::SerumThread, this);
+#ifdef DMDUTIL_ENABLE_VNI
   m_pVniThread = new std::thread(&DMD::VniThread, this);
+#else
+  m_pVniThread = nullptr;
+#endif
   m_pDMDServerConnector = nullptr;
 }