caiyu/gmio
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cmake: check all available compiler features even if BUILD_STRICT_C90

Browse Source
This commit is contained in:
Hugues Delorme 2016-03-07 17:09:06 +01:00
parent 43a296656d
commit b6c9518e97
1 changed files with 94 additions and 95 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
CMakeLists.txt
View File

@ -75,7 +75,7 @@ include(TestBigEndian)
test_big_endian(GMIO_HOST_IS_BIG_ENDIAN) test_big_endian(GMIO_HOST_IS_BIG_ENDIAN)
# Adapt C compiler flags to satisfy the GMIO_BUILD_STRICT_C90 option # Adapt C compiler flags to satisfy the GMIO_BUILD_STRICT_C90 option
# It must be done before checking of C99 and POSIX features # It must be done before checking non ANSI features(C99, POSIX, ...)
if(GMIO_BUILD_STRICT_C90) if(GMIO_BUILD_STRICT_C90)
if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE) if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ansi -pedantic-errors") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ansi -pedantic-errors")
@ -97,8 +97,6 @@ endif()
check_type_size("int" GMIO_SIZEOF_INT) check_type_size("int" GMIO_SIZEOF_INT)
check_type_size("long" GMIO_SIZEOF_LONG) check_type_size("long" GMIO_SIZEOF_LONG)
# Check non-ANSI available features
if(NOT GMIO_BUILD_STRICT_C90)
# Check availability of a 64b integer type # Check availability of a 64b integer type
if(GMIO_HAVE_STDINT_H) if(GMIO_HAVE_STDINT_H)
set(CMAKE_REQUIRED_INCLUDES stdint.h) set(CMAKE_REQUIRED_INCLUDES stdint.h)
@ -110,7 +108,7 @@ if(NOT GMIO_BUILD_STRICT_C90)
check_type_size("long long" GMIO_SIZEOF_LONG_LONG) check_type_size("long long" GMIO_SIZEOF_LONG_LONG)
endif() endif()
endif() endif()
set(CMAKE_REQUIRED_INCLUDES) set(CMAKE_REQUIRED_INCLUDES) # Pop changes
if(HAVE_GMIO_SIZEOF_INT64_T) if(HAVE_GMIO_SIZEOF_INT64_T)
set(GMIO_HAVE_INT64_T ${HAVE_GMIO_SIZEOF_INT64_T}) set(GMIO_HAVE_INT64_T ${HAVE_GMIO_SIZEOF_INT64_T})
@ -121,15 +119,17 @@ if(NOT GMIO_BUILD_STRICT_C90)
endif() endif()
# Check C99 features # Check C99 features
if(NOT GMIO_BUILD_STRICT_C90)
check_function_exists(strtof GMIO_HAVE_STRTOF_FUNC) check_function_exists(strtof GMIO_HAVE_STRTOF_FUNC)
if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE) if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
list(APPEND CMAKE_REQUIRED_LIBRARIES m) # -lm list(APPEND CMAKE_REQUIRED_LIBRARIES m) # -lm
endif() endif()
check_function_exists(powf GMIO_HAVE_POWF_FUNC) check_function_exists(powf GMIO_HAVE_POWF_FUNC)
set(CMAKE_REQUIRED_LIBRARIES) set(CMAKE_REQUIRED_LIBRARIES) # Pop changes
check_include_files(stdbool.h GMIO_HAVE_STDBOOL_H) check_include_files(stdbool.h GMIO_HAVE_STDBOOL_H)
endif()
# Check POSIX features # Check POSIX features
if(UNIX) if(UNIX)
@ -180,14 +180,14 @@ if(NOT GMIO_BUILD_STRICT_C90)
set(CMAKE_EXTRA_INCLUDE_FILES) set(CMAKE_EXTRA_INCLUDE_FILES)
set(CMAKE_REQUIRED_DEFINITIONS) set(CMAKE_REQUIRED_DEFINITIONS)
# Verify large file support # Verify large file support ?
if(GMIO_HAVE_SYS_STAT_H if(GMIO_HAVE_SYS_STAT_H
AND NOT(GMIO_SIZEOF_STRUCT_STAT_ST_SIZE STREQUAL "0") # Not arch-dependent size AND NOT(GMIO_SIZEOF_STRUCT_STAT_ST_SIZE STREQUAL "0") # Not arch-dependent size
AND NOT(GMIO_SIZEOF_STRUCT_STAT_ST_SIZE EQUAL 8)) AND NOT(GMIO_SIZEOF_STRUCT_STAT_ST_SIZE EQUAL 8))
message(WARNING "<sys/stat.h> does not provide 64b variant of fstat(), you may encounter problems with files > 2GB") message(WARNING "<sys/stat.h> does not provide 64b variant of fstat(), you may encounter problems with files > 2GB")
endif() endif()
# Have builtin byte swap functions ? # Have compiler-intrisics bytes wap functions ?
if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE) if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
# __builtin_bswap16() is missing in x86 GCC version prior to v4.7 # __builtin_bswap16() is missing in x86 GCC version prior to v4.7
# See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 # See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624
@ -203,7 +203,6 @@ if(NOT GMIO_BUILD_STRICT_C90)
int main() { return (int)_byteswap_ulong(0x11223344); }" int main() { return (int)_byteswap_ulong(0x11223344); }"
GMIO_HAVE_MSVC_BUILTIN_BSWAP_FUNC) GMIO_HAVE_MSVC_BUILTIN_BSWAP_FUNC)
endif() endif()
endif() # !GMIO_BUILD_STRICT_C90
# Specific flags for GCC-like compilers # Specific flags for GCC-like compilers
if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE) if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
@ -283,5 +282,5 @@ endif()
# Examples: # Examples:
# cmake -DCMAKE_INSTALL_PREFIX=gcc-linux64 -DCMAKE_BUILD_TYPE=Debug -DCMAKE_DEBUG_POSTFIX=_d # cmake -DCMAKE_INSTALL_PREFIX=gcc-linux64 -DCMAKE_BUILD_TYPE=Debug -DCMAKE_DEBUG_POSTFIX=_d
# cmake -DCMAKE_INSTALL_PREFIX=gcc-linux64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_RELEASE_POSTFIX=_r # cmake -DCMAKE_INSTALL_PREFIX=gcc-linux64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_RELEASE_POSTFIX=
# make VERBOSE=1 or cmake -DCMAKE_VERBOSE_MAKEFILE=TRUE # make VERBOSE=1 or cmake -DCMAKE_VERBOSE_MAKEFILE=TRUE