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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 18:02:34 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 18:02:34 +0000
commitfadeddfbb2aa38a980dd959b5ec1ffba7afd43cb (patch)
treea7bde6111c84ea64619656a38fba50909fa0bf60 /libevent/cmake/CheckConstExists.cmake
parentInitial commit. (diff)
downloadlldpd-fadeddfbb2aa38a980dd959b5ec1ffba7afd43cb.tar.xz
lldpd-fadeddfbb2aa38a980dd959b5ec1ffba7afd43cb.zip
Adding upstream version 1.0.18.upstream/1.0.18upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libevent/cmake/CheckConstExists.cmake')
-rw-r--r--libevent/cmake/CheckConstExists.cmake25
1 files changed, 25 insertions, 0 deletions
diff --git a/libevent/cmake/CheckConstExists.cmake b/libevent/cmake/CheckConstExists.cmake
new file mode 100644
index 0000000..de07458
--- /dev/null
+++ b/libevent/cmake/CheckConstExists.cmake
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+include(CheckCSourceCompiles)
+
+macro(check_const_exists CONST FILES VARIABLE)
+ if (NOT DEFINED ${VARIABLE})
+ set(check_const_exists_source "")
+ foreach(file ${FILES})
+ set(check_const_exists_source
+ "${check_const_exists_source}
+ #include <${file}>")
+ endforeach()
+ set(check_const_exists_source
+ "${check_const_exists_source}
+ int main() { (void)${CONST}; return 0; }")
+
+ check_c_source_compiles("${check_const_exists_source}" ${VARIABLE})
+
+ if (${${VARIABLE}})
+ set(${VARIABLE} 1 CACHE INTERNAL "Have const ${CONST}")
+ message(STATUS "Looking for ${CONST} - found")
+ else()
+ set(${VARIABLE} 0 CACHE INTERNAL "Have const ${CONST}")
+ message(STATUS "Looking for ${CONST} - not found")
+ endif()
+ endif()
+endmacro(check_const_exists)