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include(CheckCXXSourceCompiles)
set(CMAKE_REQUIRED_FLAGS "${FRUIT_COMPILE_FLAGS}")
CHECK_CXX_SOURCE_COMPILES("
int main() {}
"
FRUIT_TRIVIAL_SOURCE_COMPILES)
if (NOT "${FRUIT_TRIVIAL_SOURCE_COMPILES}")
message(FATAL_ERROR "A trivial program with an empty main doesn't compile, something is wrong with your compiler and/or with your compiler flags.")
endif()
CHECK_CXX_SOURCE_COMPILES("
template <typename T, typename U>
struct Pair {};
struct Map : public Pair<int, float>, Pair<int, char> {};
template <typename Value>
Value f(Pair<int, Value>*) { return Value(); }
int main() {
f((Map*)0);
}
"
FRUIT_HAS_CLANG_ARBITRARY_OVERLOAD_RESOLUTION_BUG)
CHECK_CXX_SOURCE_COMPILES("
int main() {
bool b = __has_trivial_copy(int);
(void) b;
return 0;
}
"
FRUIT_HAS_HAS_TRIVIAL_COPY)
CHECK_CXX_SOURCE_COMPILES("
int main() {
bool b = __is_trivially_copyable(int);
(void) b;
return 0;
}
"
FRUIT_HAS_IS_TRIVIALLY_COPYABLE)
CHECK_CXX_SOURCE_COMPILES("
#include <cstddef>
using X = max_align_t;
int main() {
return 0;
}
"
FRUIT_HAS_MAX_ALIGN_T)
CHECK_CXX_SOURCE_COMPILES("
#include <type_traits>
int main() {
bool b = std::is_trivially_copyable<int>::value;
(void) b;
return 0;
}
"
FRUIT_HAS_STD_IS_TRIVIALLY_COPYABLE)
CHECK_CXX_SOURCE_COMPILES("
#include <type_traits>
int main() {
bool b = std::is_trivially_copy_constructible<int>::value;
(void) b;
return 0;
}
"
FRUIT_HAS_STD_IS_TRIVIALLY_COPY_CONSTRUCTIBLE)
CHECK_CXX_SOURCE_COMPILES("
#include <cstddef>
using X = std::max_align_t;
int main() {
return 0;
}
"
FRUIT_HAS_STD_MAX_ALIGN_T)
CHECK_CXX_SOURCE_COMPILES("
#include <typeinfo>
int main() {
(void) typeid(int);
return 0;
}
"
FRUIT_HAS_TYPEID)
CHECK_CXX_SOURCE_COMPILES("
#include <typeinfo>
int main() {
constexpr static const std::type_info& x = typeid(int);
(void) x;
return 0;
}
"
FRUIT_HAS_CONSTEXPR_TYPEID)
CHECK_CXX_SOURCE_COMPILES("
#include <cxxabi.h>
int main() {
auto* p = abi::__cxa_demangle;
(void) p;
return 0;
}
"
FRUIT_HAS_CXA_DEMANGLE)
if("${FRUIT_ENABLE_COVERAGE}")
set(FRUIT_HAS_ALWAYS_INLINE_ATTRIBUTE OFF)
set(FRUIT_HAS_FORCEINLINE OFF)
else()
CHECK_CXX_SOURCE_COMPILES("
__attribute__((always_inline))
void f() {
}
int main() {
return 0;
}
"
FRUIT_HAS_ALWAYS_INLINE_ATTRIBUTE)
CHECK_CXX_SOURCE_COMPILES("
__forceinline
void f() {
}
int main() {
return 0;
}
"
FRUIT_HAS_FORCEINLINE)
endif()
CHECK_CXX_SOURCE_COMPILES("
[[deprecated]] void f();
int main() {
return 0;
}
"
FRUIT_HAS_ATTRIBUTE_DEPRECATED)
CHECK_CXX_SOURCE_COMPILES("
void f() __attribute__((deprecated));
int main() {
return 0;
}
"
FRUIT_HAS_GCC_ATTRIBUTE_DEPRECATED)
CHECK_CXX_SOURCE_COMPILES("
__declspec(deprecated) void f();
int main() {
return 0;
}
"
FRUIT_HAS_DECLSPEC_DEPRECATED)
CHECK_CXX_SOURCE_COMPILES("
int f() {
static int x = 1;
if (x == 1) {
return 0;
} else {
__assume(0);
// Note: the lack of return here is intentional
}
}
int main() {
return f();
}
"
FRUIT_HAS_MSVC_ASSUME)
CHECK_CXX_SOURCE_COMPILES("
int f() {
static int x = 1;
if (x == 1) {
return 0;
} else {
__builtin_unreachable();
// Note: the lack of return here is intentional
}
}
int main() {
return f();
}
"
FRUIT_HAS_BUILTIN_UNREACHABLE)
if (NOT "${FRUIT_HAS_STD_MAX_ALIGN_T}" AND NOT "${FRUIT_HAS_MAX_ALIGN_T}")
message(WARNING "The current C++ standard library doesn't support std::max_align_t nor ::max_align_t. Attempting to use std::max_align_t anyway, but it most likely won't work.")
endif()
if(NOT "${FRUIT_HAS_STD_IS_TRIVIALLY_COPYABLE}" AND NOT "${FRUIT_HAS_IS_TRIVIALLY_COPYABLE}"
AND NOT "${FRUIT_HAS_HAS_TRIVIAL_COPY}")
message(WARNING "The current standard library doesn't support std::is_trivially_copyable<T>, and the current compiler doesn't support __is_trivially_copyable(T) nor __has_trivial_copy(T). Attemping to use std::is_trivially_copyable<T> anyway, but it most likely won't work.")
endif()
if (NOT "${FRUIT_HAS_ATTRIBUTE_DEPRECATED}" AND NOT "${FRUIT_HAS_GCC_ATTRIBUTE_DEPRECATED}" AND NOT "${FRUIT_HAS_DECLSPEC_DEPRECATED}")
message(WARNING "No supported way to mark functions as deprecated was found. Continuing anyway, without the 'deprecated' markers.")
endif()
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/fruit-config-base.h.in ${CMAKE_CURRENT_BINARY_DIR}/../include/fruit/impl/fruit-config-base.h)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/../include/fruit/impl/fruit-config-base.h
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/fruit/impl)
|
