1include(CheckCCompilerFlag)
2include(CheckCSourceCompiles)
3include(CheckIncludeFile)
4include(CheckIncludeFiles)
5include(CheckSymbolExists)
6include(TestBigEndian)
7
8check_include_file("dlfcn.h" HAVE_DLFCN_H)
9check_include_file("fcntl.h" HAVE_FCNTL_H)
10check_include_file("inttypes.h" HAVE_INTTYPES_H)
11check_include_file("memory.h" HAVE_MEMORY_H)
12check_include_file("stdint.h" HAVE_STDINT_H)
13check_include_file("stdlib.h" HAVE_STDLIB_H)
14check_include_file("strings.h" HAVE_STRINGS_H)
15check_include_file("string.h" HAVE_STRING_H)
16check_include_file("sys/stat.h" HAVE_SYS_STAT_H)
17check_include_file("sys/types.h" HAVE_SYS_TYPES_H)
18check_include_file("unistd.h" HAVE_UNISTD_H)
19
20check_symbol_exists("getpagesize" "unistd.h" HAVE_GETPAGESIZE)
21check_symbol_exists("bcopy" "strings.h" HAVE_BCOPY)
22check_symbol_exists("memmove" "string.h" HAVE_MEMMOVE)
23check_symbol_exists("mmap" "sys/mman.h" HAVE_MMAP)
24check_symbol_exists("getrandom" "sys/random.h" HAVE_GETRANDOM)
25
26if(USE_libbsd)
27    set(CMAKE_REQUIRED_LIBRARIES "${LIB_BSD}")
28    set(_bsd "bsd/")
29else()
30    set(_bsd "")
31endif()
32check_symbol_exists("arc4random_buf" "${_bsd}stdlib.h" HAVE_ARC4RANDOM_BUF)
33if(NOT HAVE_ARC4RANDOM_BUF)
34    check_symbol_exists("arc4random" "${_bsd}stdlib.h" HAVE_ARC4RANDOM)
35endif()
36set(CMAKE_REQUIRED_LIBRARIES)
37
38#/* Define to 1 if you have the ANSI C header files. */
39check_include_files("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
40
41test_big_endian(WORDS_BIGENDIAN)
42#/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */
43if(WORDS_BIGENDIAN)
44    set(BYTEORDER 4321)
45else(WORDS_BIGENDIAN)
46    set(BYTEORDER 1234)
47endif(WORDS_BIGENDIAN)
48
49if(HAVE_SYS_TYPES_H)
50    check_symbol_exists("off_t" "sys/types.h" OFF_T)
51    check_symbol_exists("size_t" "sys/types.h" SIZE_T)
52else(HAVE_SYS_TYPES_H)
53    set(OFF_T "long")
54    set(SIZE_T "unsigned")
55endif(HAVE_SYS_TYPES_H)
56
57check_c_source_compiles("
58        #include <stdlib.h>  /* for NULL */
59        #include <unistd.h>  /* for syscall */
60        #include <sys/syscall.h>  /* for SYS_getrandom */
61        int main() {
62            syscall(SYS_getrandom, NULL, 0, 0);
63            return 0;
64        }"
65    HAVE_SYSCALL_GETRANDOM)
66
67configure_file(expat_config.h.cmake "${CMAKE_CURRENT_BINARY_DIR}/expat_config.h")
68add_definitions(-DHAVE_EXPAT_CONFIG_H)
69
70check_c_compiler_flag("-fno-strict-aliasing" FLAG_NO_STRICT_ALIASING)
71