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include(CheckIncludeFile)
include(CheckSymbolExists)
include(CheckFunctionExists)
include(CheckLibraryExists)
include(CheckTypeSize)
include(CheckStructHasMember)
include(CheckPrototypeDefinition)
include(TestBigEndian)
set(PACKAGE ${APPLICATION_NAME})
set(VERSION ${APPLICATION_VERSION})
set(DATADIR ${DATA_INSTALL_DIR})
set(LIBDIR ${LIB_INSTALL_DIR})
set(PLUGINDIR "${PLUGIN_INSTALL_DIR}-${LIBRARY_SOVERSION}")
set(SYSCONFDIR ${SYSCONF_INSTALL_DIR})
set(BINARYDIR ${CMAKE_BINARY_DIR})
set(SOURCEDIR ${CMAKE_SOURCE_DIR})
function(COMPILER_DUMPVERSION _OUTPUT_VERSION)
# Remove whitespaces from the argument.
# This is needed for CC="ccache gcc" cmake ..
string(REPLACE " " "" _C_COMPILER_ARG "${CMAKE_C_COMPILER_ARG1}")
execute_process(
COMMAND
${CMAKE_C_COMPILER} ${_C_COMPILER_ARG} -dumpversion
OUTPUT_VARIABLE _COMPILER_VERSION
)
string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
_COMPILER_VERSION "${_COMPILER_VERSION}")
set(${_OUTPUT_VERSION} ${_COMPILER_VERSION} PARENT_SCOPE)
endfunction()
if(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
compiler_dumpversion(GNUCC_VERSION)
if (NOT GNUCC_VERSION EQUAL 34)
set(CMAKE_REQUIRED_FLAGS "-fvisibility=hidden")
check_c_source_compiles(
"void __attribute__((visibility(\"default\"))) test() {}
int main(void){ return 0; }
" WITH_VISIBILITY_HIDDEN)
set(CMAKE_REQUIRED_FLAGS "")
endif (NOT GNUCC_VERSION EQUAL 34)
endif(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
# HEADERS
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(sys/syscall.h HAVE_SYS_SYSCALL_H)
check_include_file(syscall.h HAVE_SYSCALL_H)
check_include_file(grp.h HAVE_GRP_H)
check_include_file(unistd.h HAVE_UNISTD_H)
# FUNCTIONS
check_function_exists(strncpy HAVE_STRNCPY)
check_function_exists(vsnprintf HAVE_VSNPRINTF)
check_function_exists(snprintf HAVE_SNPRINTF)
check_function_exists(seteuid HAVE_SETEUID)
check_function_exists(setreuid HAVE_SETREUID)
check_function_exists(setresuid HAVE_SETRESUID)
check_function_exists(getresuid HAVE_GETRESUID)
check_function_exists(getresgid HAVE_GETRESGID)
check_function_exists(setegid HAVE_SETEGID)
check_function_exists(setregid HAVE_SETREGID)
check_function_exists(setresgid HAVE_SETRESGID)
check_function_exists(getgroups HAVE_GETGROUPS)
check_function_exists(setgroups HAVE_SETGROUPS)
if (HAVE_SETGROUPS)
check_prototype_definition(setgroups
"int setgroups(int size, const gid_t *list)"
"-1"
"unistd.h"
HAVE_SETGROUPS_INT)
endif (HAVE_SETGROUPS)
check_function_exists(syscall HAVE_SYSCALL)
if (HAVE_SYSCALL)
add_definitions(-D_GNU_SOURCE)
check_prototype_definition(syscall
"int syscall(int sysno, ...)"
"-1"
"unistd.h;sys/syscall.h"
HAVE_SYSCALL_INT)
endif (HAVE_SYSCALL)
# OPTIONS
if (LINUX)
if (HAVE_SYS_SYSCALL_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS "-DHAVE_SYS_SYSCALL_H")
endif (HAVE_SYS_SYSCALL_H)
if (HAVE_SYSCALL_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS "-DHAVE_SYSCALL_H")
endif (HAVE_SYSCALL_H)
check_c_source_compiles("
#include <sys/types.h>
#ifdef HAVE_SYS_SYSCALL_H
#include <sys/syscall.h>
#endif
#ifdef HAVE_SYSCALL_H
#include <syscall.h>
#endif
#include <unistd.h>
int main(void) {
syscall(SYS_setresuid32, -1, -1, -1);
syscall(SYS_setresgid32, -1, -1, -1);
syscall(SYS_setreuid32, -1, -1);
syscall(SYS_setregid32, -1, -1);
syscall(SYS_setuid32, -1);
syscall(SYS_setgid32, -1);
syscall(SYS_setgroups32, 0, NULL);
return 0;
}" HAVE_LINUX_32BIT_SYSCALLS)
set(CMAKE_REQUIRED_DEFINITIONS)
endif (LINUX)
check_c_source_compiles("
#include <stdbool.h>
int main(void) {
bool x;
bool *p_x = &x;
__atomic_load(p_x, &x, __ATOMIC_RELAXED);
return 0;
}" HAVE_GCC_ATOMIC_BUILTINS)
check_c_source_compiles("
__thread int tls;
int main(void) {
return 0;
}" HAVE_GCC_THREAD_LOCAL_STORAGE)
check_c_source_compiles("
void test_constructor_attribute(void) __attribute__ ((constructor));
void test_constructor_attribute(void)
{
return;
}
int main(void) {
return 0;
}" HAVE_CONSTRUCTOR_ATTRIBUTE)
check_c_source_compiles("
void test_destructor_attribute(void) __attribute__ ((destructor));
void test_destructor_attribute(void)
{
return;
}
int main(void) {
return 0;
}" HAVE_DESTRUCTOR_ATTRIBUTE)
# If this produces a warning treat it as error!
set(CMAKE_REQUIRED_FLAGS "-Werror")
check_c_source_compiles("
void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
void test_address_sanitizer_attribute(void)
{
return;
}
int main(void) {
return 0;
}" HAVE_ADDRESS_SANITIZER_ATTRIBUTE)
set(CMAKE_REQUIRED_FLAGS)
check_c_source_compiles("
void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
int main(void) {
return 0;
}" HAVE_FUNCTION_ATTRIBUTE_FORMAT)
# SYSTEM LIBRARIES
check_library_exists(dl dlopen "" HAVE_LIBDL)
if (HAVE_LIBDL)
find_library(DLFCN_LIBRARY dl)
set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${DLFCN_LIBRARY})
endif (HAVE_LIBDL)
if (OSX)
set(HAVE_APPLE 1)
endif (OSX)
# ENDIAN
if (NOT WIN32)
test_big_endian(WORDS_BIGENDIAN)
endif (NOT WIN32)
set(UIDWRAP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "uidwrap required system libraries")
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