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cmake: use check_symbol_exists() to find C99 functions

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This is a necessary fix for Visual C++ 2015
GitHub issue #9
This commit is contained in:
Hugues Delorme 2017-04-13 17:33:57 +02:00
parent ed230f6945
commit 94dd70b86c
1 changed files with 12 additions and 14 deletions
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24
CMakeLists.txt
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@ -251,17 +251,25 @@ endif()
if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
list(APPEND CMAKE_REQUIRED_LIBRARIES m) # -lm
endif()
check_function_exists(powf GMIO_HAVE_POWF_FUNC)
check_function_exists(sqrtf GMIO_HAVE_SQRTF_FUNC)
check_function_exists(strtof GMIO_HAVE_STRTOF_FUNC)
check_symbol_exists(powf math.h GMIO_HAVE_POWF_FUNC)
check_symbol_exists(sqrtf math.h GMIO_HAVE_SQRTF_FUNC)
check_symbol_exists(strtof stdlib.h GMIO_HAVE_STRTOF_FUNC)
check_symbol_exists(isfinite math.h GMIO_HAVE_ISFINITE_SYM)
check_symbol_exists(isnan math.h GMIO_HAVE_ISNAN_SYM)
check_symbol_exists(snprintf "stdio.h;stdlib.h" GMIO_HAVE_SNPRINTF_FUNC)
check_symbol_exists(vsnprintf stdio.h GMIO_HAVE_VSNPRINTF_FUNC)
if(WIN32 AND NOT GMIO_HAVE_ISNAN_SYM)
check_symbol_exists(_finite float.h GMIO_HAVE_WIN__FINITE_SYM)
endif()
if(WIN32 AND NOT GMIO_HAVE_ISNAN_SYM)
check_symbol_exists(_isnan float.h GMIO_HAVE_WIN__ISNAN_SYM)
endif()
if(WIN32 AND NOT GMIO_HAVE_SNPRINTF_FUNC)
check_symbol_exists(_snprintf stdio.h GMIO_HAVE_WIN__SNPRINTF_FUNC)
endif()
if(WIN32 AND NOT GMIO_HAVE_VSNPRINTF_FUNC)
check_symbol_exists(_vsnprintf stdio.h GMIO_HAVE_WIN__VSNPRINTF_FUNC)
endif()
set(CMAKE_REQUIRED_LIBRARIES) # Pop changes
@ -270,16 +278,6 @@ check_c_source_compiles(
int main() { const bool c = 0; return 0; }"
GMIO_HAVE_C99_BOOL)
check_function_exists(snprintf GMIO_HAVE_SNPRINTF_FUNC)
if(WIN32 AND NOT GMIO_HAVE_SNPRINTF_FUNC)
check_function_exists(_snprintf GMIO_HAVE_WIN__SNPRINTF_FUNC)
endif()
check_function_exists(vsnprintf GMIO_HAVE_VSNPRINTF_FUNC)
if(WIN32 AND NOT GMIO_HAVE_VSNPRINTF_FUNC)
check_function_exists(_vsnprintf GMIO_HAVE_WIN__VSNPRINTF_FUNC)
endif()
# Check available POSIX features
if(UNIX)
# See: