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# Generate the config.h to compile with specific intrinsics / libs.
## Check for compiler options.
include(CheckCSourceCompiles)
check_c_source_compiles("
int main(void) {
(void)__builtin_bswap16(0);
return 0;
}
"
HAVE_BUILTIN_BSWAP16
)
check_c_source_compiles("
int main(void) {
(void)__builtin_bswap32(0);
return 0;
}
"
HAVE_BUILTIN_BSWAP32
)
check_c_source_compiles("
int main(void) {
(void)__builtin_bswap64(0);
return 0;
}
"
HAVE_BUILTIN_BSWAP64
)
## Check for libraries.
find_package(Threads)
if(Threads_FOUND)
if(CMAKE_USE_PTHREADS_INIT)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
endif()
foreach(PTHREAD_TEST HAVE_PTHREAD_PRIO_INHERIT PTHREAD_CREATE_UNDETACHED)
check_c_source_compiles("
#include <pthread.h>
int main (void) {
int attr = ${PTHREAD_TEST};
return attr;
}
" ${PTHREAD_TEST}
)
endforeach()
list(APPEND WEBP_DEP_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
endif()
set(WEBP_USE_THREAD ${Threads_FOUND})
# TODO: this seems unused, check with autotools.
set(LT_OBJDIR ".libs/")
# Only useful for vwebp, so useless for now.
# find_package(OpenGL)
# set(WEBP_HAVE_GL ${OPENGL_FOUND})
# set(WEBP_DEP_INCLUDE_DIRS ${WEBP_DEP_INCLUDE_DIRS} ${OPENGL_INCLUDE_DIRS})
# set(WEBP_DEP_LIBRARIES ${WEBP_DEP_LIBRARIES} ${OPENGL_LIBRARIES})
# Find the standard C math library.
find_library(MATH_LIBRARY NAMES m)
if(MATH_LIBRARY)
list(APPEND WEBP_DEP_LIBRARIES ${MATH_LIBRARY})
endif()
# Find the standard image libraries.
set(WEBP_DEP_IMG_LIBRARIES)
set(WEBP_DEP_IMG_INCLUDE_DIRS)
foreach(I_LIB PNG JPEG TIFF)
find_package(${I_LIB})
set(WEBP_HAVE_${I_LIB} ${${I_LIB}_FOUND})
if(${I_LIB}_FOUND)
list(APPEND WEBP_DEP_IMG_LIBRARIES ${${I_LIB}_LIBRARIES})
list(APPEND WEBP_DEP_IMG_INCLUDE_DIRS
${${I_LIB}_INCLUDE_DIR} ${${I_LIB}_INCLUDE_DIRS})
endif()
endforeach()
if(WEBP_DEP_IMG_INCLUDE_DIRS)
list(REMOVE_DUPLICATES WEBP_DEP_IMG_INCLUDE_DIRS)
endif()
# GIF detection, gifdec isn't part of the imageio lib.
include(CMakePushCheckState)
set(WEBP_DEP_GIF_LIBRARIES)
set(WEBP_DEP_GIF_INCLUDE_DIRS)
find_package(GIF)
set(WEBP_HAVE_GIF ${GIF_FOUND})
if(GIF_FOUND)
# GIF find_package only locates the header and library, it doesn't fail
# compile tests when detecting the version, but falls back to 3 (as of at
# least cmake 3.7.2). Make sure the library links to avoid incorrect
# detection when cross compiling.
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES ${GIF_LIBRARIES})
set(CMAKE_REQUIRED_INCLUDES ${GIF_INCLUDE_DIR})
check_c_source_compiles("
#include <gif_lib.h>
int main(void) {
(void)DGifOpenFileHandle;
return 0;
}
" GIF_COMPILES
)
cmake_pop_check_state()
if(GIF_COMPILES)
list(APPEND WEBP_DEP_GIF_LIBRARIES ${GIF_LIBRARIES})
list(APPEND WEBP_DEP_GIF_INCLUDE_DIRS ${GIF_INCLUDE_DIR})
else()
unset(GIF_FOUND)
endif()
endif()
## Check for specific headers.
include(CheckIncludeFiles)
check_include_files("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
check_include_files(dlfcn.h HAVE_DLFCN_H)
check_include_files(GLUT/glut.h HAVE_GLUT_GLUT_H)
check_include_files(GL/glut.h HAVE_GL_GLUT_H)
check_include_files(inttypes.h HAVE_INTTYPES_H)
check_include_files(memory.h HAVE_MEMORY_H)
check_include_files(OpenGL/glut.h HAVE_OPENGL_GLUT_H)
check_include_files(shlwapi.h HAVE_SHLWAPI_H)
check_include_files(stdint.h HAVE_STDINT_H)
check_include_files(stdlib.h HAVE_STDLIB_H)
check_include_files(strings.h HAVE_STRINGS_H)
check_include_files(string.h HAVE_STRING_H)
check_include_files(sys/stat.h HAVE_SYS_STAT_H)
check_include_files(sys/types.h HAVE_SYS_TYPES_H)
check_include_files(unistd.h HAVE_UNISTD_H)
check_include_files(wincodec.h HAVE_WINCODEC_H)
check_include_files(windows.h HAVE_WINDOWS_H)
# Windows specifics
if(HAVE_WINCODEC_H)
list(APPEND WEBP_DEP_LIBRARIES shlwapi ole32 windowscodecs)
endif()
## Check for SIMD extensions.
include(${CMAKE_CURRENT_LIST_DIR}/cpu.cmake)
## Define extra info.
set(PACKAGE ${PROJECT_NAME})
set(PACKAGE_NAME ${PROJECT_NAME})
# Read from configure.ac.
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/configure.ac CONFIGURE_AC)
string(REGEX MATCHALL "\\[([0-9a-z\\.:/]*)\\]"
CONFIGURE_AC_PACKAGE_INFO ${CONFIGURE_AC}
)
function(strip_bracket VAR)
string(LENGTH ${${VAR}} TMP_LEN)
math(EXPR TMP_LEN ${TMP_LEN}-2)
string(SUBSTRING ${${VAR}} 1 ${TMP_LEN} TMP_SUB)
set(${VAR} ${TMP_SUB} PARENT_SCOPE)
endfunction()
list(GET CONFIGURE_AC_PACKAGE_INFO 1 PACKAGE_VERSION)
strip_bracket(PACKAGE_VERSION)
list(GET CONFIGURE_AC_PACKAGE_INFO 2 PACKAGE_BUGREPORT)
strip_bracket(PACKAGE_BUGREPORT)
list(GET CONFIGURE_AC_PACKAGE_INFO 3 PACKAGE_URL)
strip_bracket(PACKAGE_URL)
# Build more info.
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
set(PACKAGE_TARNAME ${PACKAGE_NAME})
set(VERSION ${PACKAGE_VERSION})
|
