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# Tests for various platform features and generates a header with the appropriate defines,
# similar to the one created by autotools.
include(CheckSymbolExists)
include(CheckCXXSymbolExists)
include(CheckFunctionExists)
include(CheckIncludeFileCXX)
include(CheckEnumValueExists)
include(CheckIncludeFiles)
include(EnableCFlagsIfSupported)
add_compile_definitions(
$<$<CONFIG:DEBUG>:DEBUG>
)
if(NOT MSVC)
enable_cflags_if_supported(
-Wall
-Wchar-subscripts
-Wformat-security
-Wpointer-arith
-Wshadow
-Wsign-compare
-Wtype-limits
-fopenmp
)
enable_linker_flags_if_supported(
-fopenmp
)
else()
enable_cflags_if_supported(
/W4
/openmp
)
enable_linker_flags_if_supported(
/openmp
)
endif()
check_function_exists(aligned_alloc HAVE_ALIGNED_ALLOC)
check_include_file_cxx("dlfcn.h" HAVE_DLFCN_H)
check_include_file_cxx("fts.h" HAVE_FTS_H)
check_include_file_cxx("GL/gl.h" HAVE_GL_GL_H)
check_include_file_cxx("inttypes.h" HAVE_INTTYPES_H)
check_include_file_cxx("memory.h" HAVE_MEMORY_H)
check_function_exists(posix_memalign HAVE_POSIX_MEMALIGN)
check_enum_value_exists("PTHREAD_PRIO_INHERIT" "pthread.h" HAVE_PTHREAD_PRIO_INHERIT)
check_include_file_cxx("fts.h" HAVE_FTS_H)
check_include_file_cxx("stdint.h" HAVE_STDINT_H)
check_include_file_cxx("stdlib.h" HAVE_STDLIB_H)
check_include_file_cxx("strings.h" HAVE_STRINGS_H)
check_include_file_cxx("string.h" HAVE_STRING_H)
check_include_file_cxx("sys/stat.h" HAVE_SYS_STAT_H)
check_include_file_cxx("sys/types.h" HAVE_SYS_TYPES_H)
check_include_file_cxx("unistd.h" HAVE_UNISTD_H)
check_include_file_cxx("windows.h" HAVE_WINDOWS_H)
set(_std_c_headers
# C89/C90
assert.h
ctype.h
errno.h
float.h
limits.h
locale.h
math.h
setjmp.h
signal.h
stdarg.h
stddef.h
stdio.h
stdlib.h
string.h
time.h
# C95/NA1
iso646.h
wctype.h
# C99
complex.h
fenv.h
inttypes.h
stdbool.h
stdint.h
tgmath.h
)
check_include_files("${_std_c_headers}" STDC_HEADERS LANGUAGE C)
unset(_std_c_headers)
# Create global configuration header
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/include")
configure_file(config.h.cmake.in "${CMAKE_BINARY_DIR}/include/config.h")
include_directories("${CMAKE_BINARY_DIR}/include")
add_compile_definitions(HAVE_CONFIG_H)
# Force-include the file in all targets
if(MSVC)
add_definitions(/FI"config.h")
else()
# GCC or Clang
add_definitions(-include config.h)
endif()
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