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Merged
alexcrichton merged 1 commit into from
Jan 7, 2026
Merged

Add __wasi_sdk_{major,version}__ defines #709

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1 change: 1 addition & 0 deletions CMakeLists.txt
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Expand Up @@ -49,6 +49,7 @@ option(BUILD_TESTS "Whether or not to build tests" OFF)
option(SIMD "Whether or not to build simd-enabled intrinsics into wasi-libc" OFF)
option(BUILD_SHARED "Whether or not to build shared libraries" ON)
option(CHECK_SYMBOLS "Whether or not to check the exported symbols of libc.a" OFF)
set(WASI_SDK_VERSION "" CACHE STRING "Version information for wasi-sdk to embed in headers")

if(TARGET_TRIPLE MATCHES "-threads$")
set(WASI p1)
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6 changes: 6 additions & 0 deletions libc-bottom-half/CMakeLists.txt
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Expand Up @@ -6,6 +6,12 @@ add_subdirectory(signal)
# =============================================================================
# sysroot headers from the bottom half
#
if(WASI_SDK_VERSION)
set(__wasi_sdk_version__ ${WASI_SDK_VERSION})
if (WASI_SDK_VERSION MATCHES "([0-9]+)\\..*")
set(__wasi_sdk_major__ ${CMAKE_MATCH_1})
endif()
endif()
configure_file(headers/public/wasi/version.h.in ${SYSROOT_INC}/wasi/version.h)
add_custom_target(sysroot-wasi-snapshot-header DEPENDS ${SYSROOT_INC}/wasi/version.h)
add_dependencies(sysroot_inc sysroot-wasi-snapshot-header)
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3 changes: 3 additions & 0 deletions libc-bottom-half/headers/public/wasi/version.h.in
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Expand Up @@ -11,4 +11,7 @@
#cmakedefine __wasip2__
#cmakedefine __wasip3__

#cmakedefine __wasi_sdk_major__ @__wasi_sdk_major__@
#cmakedefine __wasi_sdk_version__ "@__wasi_sdk_version__@"

#endif /* __WASI_VERSION_H */