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llvm-shlib: Fix mingw dll exports #148772

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Merged
merged 1 commit into from
Jul 15, 2025
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llvm-shlib: Fix mingw dll exports #148772

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9 changes: 9 additions & 0 deletions llvm/tools/llvm-shlib/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,15 @@ if(LLVM_BUILD_LLVM_DYLIB)
llvm_install_library_symlink(LLVM-${LLVM_VERSION_MAJOR}${LLVM_VERSION_SUFFIX} $<TARGET_FILE_NAME:LLVM> SHARED FULL_DEST COMPONENT LLVM)
endif()

if (MINGW OR CYGWIN)
# The LLVM DLL is supposed to export all symbols (except for ones
# that are explicitly hidden). Normally, this is what happens anyway, but
# if there are symbols that are marked explicitly as dllexport, we'd only
# export them and nothing else. Therefore, add --export-all-symbols to
# make sure we export all symbols despite potential dllexports.
target_link_options(LLVM PRIVATE LINKER:--export-all-symbols)
endif()

list(REMOVE_DUPLICATES LIB_NAMES)
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
set(LIB_NAMES -Wl,-all_load ${LIB_NAMES})
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