Add swift_binary(linkshared = True) for shared libraries - #1820
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Links the target as a shared library / loadable module (lib<name>.so, .dylib on Apple) instead of an executable, like cc_binary's linkshared: no main entry point, and the renamed-entry-point machinery is disabled (gated on the new swift.no_entry_point_rename feature or linkshared). Useful for dlopen / System.loadLibrary consumers such as Android JNI libraries (export functions with @_cdecl). examples/xplatform/shared_library builds a dynamic library this way.
AttilaTheFun
requested review from
aaronsky,
adincebic,
brentleyjones,
keith,
luispadron and
mattrobmattrob
as code owners
June 23, 2026 17:38
This was referenced Jun 23, 2026
keith
approved these changes
Jun 23, 2026
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First of two foundation PRs that split #1809 into reviewable pieces. The Swift
SDK cross-compilation work then stacks on top:
This PR is independent and testable on its own.
What this adds
swift_binary(linkshared = True): links the target as a shared library /loadable module (
lib<name>.so,.dylibon Apple) instead of an executable,like
cc_binary'slinkshared. The binary has nomain, and therenamed-entry-point machinery is disabled (gated on
linksharedor the newswift.no_entry_point_renametoolchain feature). This is useful fordlopen/System.loadLibraryconsumers such as Android JNI libraries (export functionswith
@_cdecl).examples/xplatform/shared_librarybuilds a dynamic library this way; it'sexercised by the macOS
//examples/...wildcard and the Windows CI task.