[libc-commits] [libc] [libc] Generate a stub for libpthread.a (PR #200908)

[Jeff Bailey via libc-commits]

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@@ -56,6 +56,29 @@ foreach(archive IN ZIP_LISTS
   endif()
 endforeach()
 
+# Add empty archive libraries for compatibility with systems expecting certain
+# bits of libc to be located in separate files (e.g. libpthread).
+if(LLVM_LIBC_FULL_BUILD)
+  set(dummy_source "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp")
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kaladron wrote:

I'm not sure that portability matters much as I don't anticipate us providing this library outside of a full build.

Given that, would a linkerscript do the job?

set(LINKER_SCRIPT "${CMAKE_CURRENT_BINARY_DIR}/libpthread.a")
file(WRITE ${LINKER_SCRIPT} "INPUT(-lc)\n")

type of thing?

https://github.com/llvm/llvm-project/pull/200908