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include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckSymbolExists)
include(CheckFunctionExists)
include(CheckLibraryExists)
include(CheckTypeSize)
include(CheckCXXSourceCompiles)
include(TestBigEndian)
# Check if the size of integral types are suitable.
check_type_size("short" SIZEOF_SHORT)
if(NOT ${SIZEOF_SHORT} EQUAL 2)
MESSAGE(FATAL_ERROR "TagLib requires that short is 16-bit wide.")
endif()
check_type_size("int" SIZEOF_INT)
if(NOT ${SIZEOF_INT} EQUAL 4)
MESSAGE(FATAL_ERROR "TagLib requires that int is 32-bit wide.")
endif()
check_type_size("long long" SIZEOF_LONGLONG)
if(NOT ${SIZEOF_LONGLONG} EQUAL 8)
MESSAGE(FATAL_ERROR "TagLib requires that long long is 64-bit wide.")
endif()
check_type_size("wchar_t" SIZEOF_WCHAR_T)
if(${SIZEOF_WCHAR_T} LESS 2)
MESSAGE(FATAL_ERROR "TagLib requires that wchar_t is sufficient to store a UTF-16 char.")
endif()
# Determine the CPU byte order.
test_big_endian(IS_BIG_ENDIAN)
if(NOT IS_BIG_ENDIAN)
set(SYSTEM_BYTEORDER 1)
else()
set(SYSTEM_BYTEORDER 2)
endif()
# Determine which kind of atomic operations your compiler supports.
check_cxx_source_compiles("
#include <atomic>
int main() {
std::atomic<unsigned int> x;
x.fetch_add(1);
x.fetch_sub(1);
return 0;
}
" HAVE_STD_ATOMIC)
if(NOT HAVE_STD_ATOMIC)
check_cxx_source_compiles("
#include <boost/atomic.hpp>
int main() {
boost::atomic<unsigned int> x(1);
x.fetch_add(1);
x.fetch_sub(1);
return 0;
}
" HAVE_BOOST_ATOMIC)
if(NOT HAVE_BOOST_ATOMIC)
check_cxx_source_compiles("
int main() {
volatile int x;
__sync_add_and_fetch(&x, 1);
int y = __sync_sub_and_fetch(&x, 1);
return 0;
}
" HAVE_GCC_ATOMIC)
if(NOT HAVE_GCC_ATOMIC)
check_cxx_source_compiles("
#include <libkern/OSAtomic.h>
int main() {
volatile int32_t x;
OSAtomicIncrement32Barrier(&x);
int32_t y = OSAtomicDecrement32Barrier(&x);
return 0;
}
" HAVE_MAC_ATOMIC)
if(NOT HAVE_MAC_ATOMIC)
check_cxx_source_compiles("
#include <windows.h>
int main() {
volatile LONG x;
InterlockedIncrement(&x);
LONG y = InterlockedDecrement(&x);
return 0;
}
" HAVE_WIN_ATOMIC)
if(NOT HAVE_WIN_ATOMIC)
check_cxx_source_compiles("
#include <ia64intrin.h>
int main() {
volatile int x;
__sync_add_and_fetch(&x, 1);
int y = __sync_sub_and_fetch(&x, 1);
return 0;
}
" HAVE_IA64_ATOMIC)
endif()
endif()
endif()
endif()
endif()
# Determine which kind of byte swap functions your compiler supports.
# GCC's __builtin_bswap* should be checked individually
# because some of them can be missing depends on the GCC version.
check_cxx_source_compiles("
int main() {
__builtin_bswap16(0);
return 0;
}
" HAVE_GCC_BYTESWAP_16)
check_cxx_source_compiles("
int main() {
__builtin_bswap32(0);
return 0;
}
" HAVE_GCC_BYTESWAP_32)
check_cxx_source_compiles("
int main() {
__builtin_bswap64(0);
return 0;
}
" HAVE_GCC_BYTESWAP_64)
if(NOT HAVE_GCC_BYTESWAP_16 OR NOT HAVE_GCC_BYTESWAP_32 OR NOT HAVE_GCC_BYTESWAP_64)
check_cxx_source_compiles("
#include <byteswap.h>
int main() {
__bswap_16(0);
__bswap_32(0);
__bswap_64(0);
return 0;
}
" HAVE_GLIBC_BYTESWAP)
if(NOT HAVE_GLIBC_BYTESWAP)
check_cxx_source_compiles("
#include <stdlib.h>
int main() {
_byteswap_ushort(0);
_byteswap_ulong(0);
_byteswap_uint64(0);
return 0;
}
" HAVE_MSC_BYTESWAP)
if(NOT HAVE_MSC_BYTESWAP)
check_cxx_source_compiles("
#include <libkern/OSByteOrder.h>
int main() {
OSSwapInt16(0);
OSSwapInt32(0);
OSSwapInt64(0);
return 0;
}
" HAVE_MAC_BYTESWAP)
if(NOT HAVE_MAC_BYTESWAP)
check_cxx_source_compiles("
#include <sys/endian.h>
int main() {
swap16(0);
swap32(0);
swap64(0);
return 0;
}
" HAVE_OPENBSD_BYTESWAP)
endif()
endif()
endif()
endif()
# Determine whether your compiler supports some safer version of sprintf.
check_cxx_source_compiles("
#include <cstdio>
int main() { char buf[20]; snprintf(buf, 20, \"%d\", 1); return 0; }
" HAVE_SNPRINTF)
if(NOT HAVE_SNPRINTF)
check_cxx_source_compiles("
#include <cstdio>
int main() { char buf[20]; sprintf_s(buf, \"%d\", 1); return 0; }
" HAVE_SPRINTF_S)
endif()
# Determine whether your compiler supports codecvt.
check_cxx_source_compiles("
#include <codecvt>
int main() {
std::codecvt_utf8_utf16<wchar_t> x;
return 0;
}
" HAVE_STD_CODECVT)
# Check for libz using the cmake supplied FindZLIB.cmake
find_package(ZLIB)
if(ZLIB_FOUND)
set(HAVE_ZLIB 1)
else()
set(HAVE_ZLIB 0)
endif()
set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)
find_package(CppUnit)
if(NOT CppUnit_FOUND AND BUILD_TESTS)
message(STATUS "CppUnit not found, disabling tests.")
set(BUILD_TESTS OFF)
endif()
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