| /* 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 |