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- /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
- file Copyright.txt or https://cmake.org/licensing#kwsys for details. */
- /*
- Macros to define main() in a cross-platform way.
- Usage:
- int KWSYS_PLATFORM_TEST_C_MAIN()
- {
- return 0;
- }
- int KWSYS_PLATFORM_TEST_C_MAIN_ARGS(argc, argv)
- {
- (void)argc; (void)argv;
- return 0;
- }
- */
- #if defined(__CLASSIC_C__)
- #define KWSYS_PLATFORM_TEST_C_MAIN() main()
- #define KWSYS_PLATFORM_TEST_C_MAIN_ARGS(argc, argv) \
- main(argc, argv) int argc; \
- char* argv[];
- #else
- #define KWSYS_PLATFORM_TEST_C_MAIN() main(void)
- #define KWSYS_PLATFORM_TEST_C_MAIN_ARGS(argc, argv) \
- main(int argc, char* argv[])
- #endif
- #ifdef TEST_KWSYS_C_HAS_PTRDIFF_T
- #include <stddef.h>
- int f(ptrdiff_t n)
- {
- return n > 0;
- }
- int KWSYS_PLATFORM_TEST_C_MAIN()
- {
- char* p = 0;
- ptrdiff_t d = p - p;
- (void)d;
- return f(p - p);
- }
- #endif
- #ifdef TEST_KWSYS_C_HAS_SSIZE_T
- #include <unistd.h>
- int f(ssize_t n)
- {
- return (int)n;
- }
- int KWSYS_PLATFORM_TEST_C_MAIN()
- {
- ssize_t n = 0;
- return f(n);
- }
- #endif
- #ifdef TEST_KWSYS_C_HAS_CLOCK_GETTIME_MONOTONIC
- #if defined(__APPLE__)
- #include <AvailabilityMacros.h>
- #if MAC_OS_X_VERSION_MIN_REQUIRED < 101200
- #error "clock_gettime not available on macOS < 10.12"
- #endif
- #endif
- #include <time.h>
- int KWSYS_PLATFORM_TEST_C_MAIN()
- {
- struct timespec ts;
- return clock_gettime(CLOCK_MONOTONIC, &ts);
- }
- #endif
- #ifdef TEST_KWSYS_C_TYPE_MACROS
- char* info_macros =
- #if defined(__SIZEOF_SHORT__)
- "INFO:macro[__SIZEOF_SHORT__]\n"
- #endif
- #if defined(__SIZEOF_INT__)
- "INFO:macro[__SIZEOF_INT__]\n"
- #endif
- #if defined(__SIZEOF_LONG__)
- "INFO:macro[__SIZEOF_LONG__]\n"
- #endif
- #if defined(__SIZEOF_LONG_LONG__)
- "INFO:macro[__SIZEOF_LONG_LONG__]\n"
- #endif
- #if defined(__SHORT_MAX__)
- "INFO:macro[__SHORT_MAX__]\n"
- #endif
- #if defined(__INT_MAX__)
- "INFO:macro[__INT_MAX__]\n"
- #endif
- #if defined(__LONG_MAX__)
- "INFO:macro[__LONG_MAX__]\n"
- #endif
- #if defined(__LONG_LONG_MAX__)
- "INFO:macro[__LONG_LONG_MAX__]\n"
- #endif
- "";
- int KWSYS_PLATFORM_TEST_C_MAIN_ARGS(argc, argv)
- {
- int require = 0;
- require += info_macros[argc];
- (void)argv;
- return require;
- }
- #endif
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