ConfigureChecks.cmake

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