mirror of
https://gitlab.kitware.com/cmake/cmake.git
synced 2026-09-25 04:09:36 +03:00
Brad King
0182611a56
Prior to CMake 4.2.0, projects using the EMSDK's toolchain file while
also enabling `TARGET_SUPPORTS_SHARED_LIBS` would link shared libraries
using our default `-shared` flag plus whatever `-sSIDE_MODULE` flag
the project added, if any. CMake 4.2.0 introduced builtin Emscripten
support, but since commit d361bf365e (Emscripten: Drop hard-coded
-sMAIN_MODULE and -sSIDE_MODULE flags, 2025-09-18, v4.2.0-rc1~146^2)
we still leave it to projects to add Emscripten-specific flags needed
to link shared libraries.
Restore the pre-4.2 behavior of adding the `-shared` flag. In
particular, this is needed for upcoming Emscripten support for real
shared libraries.
Issue: #27240
19 lines
805 B
CMake
19 lines
805 B
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file LICENSE.rst or https://cmake.org/licensing for details.
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include_guard()
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macro(__emscripten_clang lang)
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set(CMAKE_SHARED_LIBRARY_SONAME_${lang}_FLAG "-Wl,-soname,")
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# FIXME(#27240): We do not add -sMAIN_MODULE to CMAKE_${lang}_LINK_EXECUTABLE
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# because it is not always needed, and can break things if added unnecessarily.
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# We also do not add -sMAIN_MODULE to CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS
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# to preserve legacy behavior in which projects added it as needed.
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# In the future we may add both flags with suitable controls.
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set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_LIBRARIES 1)
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set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_OBJECTS 1)
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set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_INCLUDES 1)
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endmacro()
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