CMake/Modules/CMakeOBJCXXCompilerId.mm.in
Steve Wilson 9e66397c28 Languages: Add support for Objective-C++
Add entries in Modules and Modules/Platform to support
Objective-C++ compiler determination and identification.
Add Modules to check Objective-C++ compiler flags, source
compilations, program checks, etc...

Use OBJCXX as the designator of the language, eg:

project(foo OBJCXX)

Add various tests for Objective-C++ language features.  Add
tests to preserve C++ handling of .M and .mm files when
Objective-C++ is not a configured language.

Co-authored-by: Cristian Adam <cristian.adam@gmail.com>
2019-09-28 15:56:53 +02:00

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/* This source file must have a .cpp extension so that all C++ compilers
recognize the extension without flags. Borland does not know .cxx for
example. */
#ifndef __cplusplus
# error "An Objective-C compiler has been selected for Objective-C++."
#endif
@CMAKE_OBJCXX_COMPILER_ID_CONTENT@
/* Construct the string literal in pieces to prevent the source from
getting matched. Store it in a pointer rather than an array
because some compilers will just produce instructions to fill the
array rather than assigning a pointer to a static array. */
char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
#ifdef SIMULATE_ID
char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
#endif
#ifdef __QNXNTO__
char const* qnxnto = "INFO" ":" "qnxnto[]";
#endif
@CMAKE_OBJCXX_COMPILER_ID_PLATFORM_CONTENT@
@CMAKE_OBJCXX_COMPILER_ID_ERROR_FOR_TEST@
#if defined(_MSC_VER) && defined(_MSVC_LANG)
#define CXX_STD _MSVC_LANG
#else
#define CXX_STD __cplusplus
#endif
const char* info_language_dialect_default = "INFO" ":" "dialect_default["
#if CXX_STD > 201703L
"20"
#elif CXX_STD >= 201703L
"17"
#elif CXX_STD >= 201402L
"14"
#elif CXX_STD >= 201103L
"11"
#else
"98"
#endif
"]";
/*--------------------------------------------------------------------------*/
int main(int argc, char* argv[])
{
int require = 0;
require += info_compiler[argc];
require += info_platform[argc];
#ifdef COMPILER_VERSION_MAJOR
require += info_version[argc];
#endif
#ifdef COMPILER_VERSION_INTERNAL
require += info_version_internal[argc];
#endif
#ifdef SIMULATE_ID
require += info_simulate[argc];
#endif
#ifdef SIMULATE_VERSION_MAJOR
require += info_simulate_version[argc];
#endif
require += info_language_dialect_default[argc];
(void)argv;
return require;
}