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cmake: pre-fill HAVE_STDATOMIC_H, HAVE_ATOMIC for mingw-w64

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`stdatomic.h` and `_Atomic` were first available in gcc 4.9.0 and
llvm/clang 3.6. Set detection values accordingly and save these two
detections on configure runs.

Closes #16036
This commit is contained in:
Viktor Szakats 2025-01-16 15:21:23 +01:00
parent 25b445e479
commit d5fb2b29d5
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1 changed files with 8 additions and 0 deletions
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CMake/win32-cache.cmake
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@ -45,6 +45,14 @@ if(MINGW)
set(HAVE_UTIME_H 1) # wrapper to sys/utime.h
set(HAVE_DIRENT_H 1)
set(HAVE_OPENDIR 1)
if((CMAKE_COMPILER_IS_GNUCC AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.9) OR
(CMAKE_C_COMPILER_ID STREQUAL "Clang" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.6))
set(HAVE_STDATOMIC_H 1)
set(HAVE_ATOMIC 1)
else()
set(HAVE_STDATOMIC_H 0)
set(HAVE_ATOMIC 0)
endif()
else()
set(HAVE_LIBGEN_H 0)
set(HAVE_FTRUNCATE 0)