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[Runtimes] Allow HandleLibc.cmake to be called multiple times (#193540)

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Summary:
This needs to check to see if it's already been called now that we want
to use it more places than just libcxx.
This commit is contained in:
Joseph Huber 2026-04-22 13:16:50 -05:00 committed by GitHub
parent d9bbb902fe
commit c3c8e40b6c
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1 changed files with 4 additions and 0 deletions
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4
runtimes/cmake/Modules/HandleLibC.cmake
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@ -10,6 +10,10 @@
include_guard(GLOBAL)
if(TARGET runtimes-libc-headers)
return()
endif()
set(RUNTIMES_SUPPORTED_C_LIBRARIES system llvm-libc picolibc newlib)
set(RUNTIMES_USE_LIBC "system" CACHE STRING "Specify C library to use. Supported values are ${RUNTIMES_SUPPORTED_C_LIBRARIES}.")
if (NOT "${RUNTIMES_USE_LIBC}" IN_LIST RUNTIMES_SUPPORTED_C_LIBRARIES)