| Haibo Huang | 40a7191 | 2019-10-11 11:13:39 -0700 | [diff] [blame] | 1 | include(CheckCCompilerFlag) |
| 2 | include(CheckCSourceCompiles) |
| 3 | include(CheckIncludeFile) |
| 4 | include(CheckIncludeFiles) |
| 5 | include(CheckSymbolExists) |
| 6 | include(TestBigEndian) |
| 7 | |
| 8 | check_include_file("dlfcn.h" HAVE_DLFCN_H) |
| 9 | check_include_file("fcntl.h" HAVE_FCNTL_H) |
| 10 | check_include_file("inttypes.h" HAVE_INTTYPES_H) |
| 11 | check_include_file("memory.h" HAVE_MEMORY_H) |
| 12 | check_include_file("stdint.h" HAVE_STDINT_H) |
| 13 | check_include_file("stdlib.h" HAVE_STDLIB_H) |
| 14 | check_include_file("strings.h" HAVE_STRINGS_H) |
| 15 | check_include_file("string.h" HAVE_STRING_H) |
| 16 | check_include_file("sys/stat.h" HAVE_SYS_STAT_H) |
| 17 | check_include_file("sys/types.h" HAVE_SYS_TYPES_H) |
| 18 | check_include_file("unistd.h" HAVE_UNISTD_H) |
| 19 | |
| 20 | check_symbol_exists("getpagesize" "unistd.h" HAVE_GETPAGESIZE) |
| 21 | check_symbol_exists("mmap" "sys/mman.h" HAVE_MMAP) |
| 22 | check_symbol_exists("getrandom" "sys/random.h" HAVE_GETRANDOM) |
| 23 | |
| 24 | if(EXPAT_WITH_LIBBSD) |
| 25 | set(CMAKE_REQUIRED_LIBRARIES "${LIB_BSD}") |
| 26 | set(_bsd "bsd/") |
| 27 | else() |
| 28 | set(_bsd "") |
| 29 | endif() |
| 30 | check_symbol_exists("arc4random_buf" "${_bsd}stdlib.h" HAVE_ARC4RANDOM_BUF) |
| 31 | if(NOT HAVE_ARC4RANDOM_BUF) |
| 32 | check_symbol_exists("arc4random" "${_bsd}stdlib.h" HAVE_ARC4RANDOM) |
| 33 | endif() |
| 34 | set(CMAKE_REQUIRED_LIBRARIES) |
| 35 | |
| 36 | #/* Define to 1 if you have the ANSI C header files. */ |
| 37 | check_include_files("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS) |
| 38 | |
| 39 | test_big_endian(WORDS_BIGENDIAN) |
| 40 | #/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */ |
| 41 | if(WORDS_BIGENDIAN) |
| 42 | set(BYTEORDER 4321) |
| 43 | else(WORDS_BIGENDIAN) |
| 44 | set(BYTEORDER 1234) |
| 45 | endif(WORDS_BIGENDIAN) |
| 46 | |
| 47 | if(HAVE_SYS_TYPES_H) |
| 48 | check_symbol_exists("off_t" "sys/types.h" OFF_T) |
| 49 | check_symbol_exists("size_t" "sys/types.h" SIZE_T) |
| 50 | else(HAVE_SYS_TYPES_H) |
| 51 | set(OFF_T "long") |
| 52 | set(SIZE_T "unsigned") |
| 53 | endif(HAVE_SYS_TYPES_H) |
| 54 | |
| 55 | check_c_source_compiles(" |
| 56 | #include <stdlib.h> /* for NULL */ |
| 57 | #include <unistd.h> /* for syscall */ |
| 58 | #include <sys/syscall.h> /* for SYS_getrandom */ |
| 59 | int main() { |
| 60 | syscall(SYS_getrandom, NULL, 0, 0); |
| 61 | return 0; |
| 62 | }" |
| 63 | HAVE_SYSCALL_GETRANDOM) |
| 64 | |
| 65 | check_c_compiler_flag("-fno-strict-aliasing" FLAG_NO_STRICT_ALIASING) |
| 66 | check_c_compiler_flag("-fvisibility=hidden" FLAG_VISIBILITY) |