diff options
Diffstat (limited to 'lib/ccan/wscript')
| -rw-r--r-- | lib/ccan/wscript | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/lib/ccan/wscript b/lib/ccan/wscript new file mode 100644 index 00000000000..0543a4de075 --- /dev/null +++ b/lib/ccan/wscript @@ -0,0 +1,120 @@ +#!/usr/bin/env python + +import Logs, sys + +def configure(conf): + # FIXME: if they don't have -Werror, these will all fail. But they + # probably will anyway... + conf.CHECK_CODE('int __attribute__((cold)) func(int x) { return x; }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_ATTRIBUTE_COLD') + conf.CHECK_CODE('int __attribute__((const)) func(int x) { return x; }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_ATTRIBUTE_CONST') + conf.CHECK_CODE('void __attribute__((noreturn)) func(int x) { exit(x); }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_ATTRIBUTE_NORETURN') + conf.CHECK_CODE('void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_ATTRIBUTE_PRINTF') + conf.CHECK_CODE('int __attribute__((unused)) func(int x) { return x; }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_ATTRIBUTE_UNUSED') + conf.CHECK_CODE('int __attribute__((used)) func(int x) { return x; }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_ATTRIBUTE_USED') + # We try to use headers for a compile-time test. + conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER + #define B __BYTE_ORDER + #elif defined(BYTE_ORDER) + #define B BYTE_ORDER + #endif + + #ifdef __LITTLE_ENDIAN + #define LITTLE __LITTLE_ENDIAN + #elif defined(LITTLE_ENDIAN) + #define LITTLE LITTLE_ENDIAN + #endif + + #if !defined(LITTLE) || !defined(B) || LITTLE != B + #error Not little endian. + #endif""", + headers="endian.h sys/endian.h", + define="HAVE_LITTLE_ENDIAN") + conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER + #define B __BYTE_ORDER + #elif defined(BYTE_ORDER) + #define B BYTE_ORDER + #endif + + #ifdef __BIG_ENDIAN + #define BIG __BIG_ENDIAN + #elif defined(BIG_ENDIAN) + #define BIG BIG_ENDIAN + #endif + + #if !defined(BIG) || !defined(B) || BIG != B + #error Not big endian. + #endif""", + headers="endian.h sys/endian.h", + define="HAVE_BIG_ENDIAN") + + if not conf.CONFIG_SET("HAVE_BIG_ENDIAN") and not conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"): + # That didn't work! Do runtime test. + conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u; + u.i = 0x01020304; + return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;""", + addmain=True, execute=True, + define='HAVE_LITTLE_ENDIAN', + msg="Checking for HAVE_LITTLE_ENDIAN - runtime") + conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u; + u.i = 0x01020304; + return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;""", + addmain=True, execute=True, + define='HAVE_BIG_ENDIAN', + msg="Checking for HAVE_BIG_ENDIAN - runtime") + + # Extra sanity check. + if conf.CONFIG_SET("HAVE_BIG_ENDIAN") == conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"): + Logs.error("Failed endian determination. The PDP-11 is back?") + sys.exit(1) + + conf.CHECK_CODE('return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;', + link=True, + define='HAVE_BUILTIN_CLZ') + conf.CHECK_CODE('return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;', + link=True, + define='HAVE_BUILTIN_CLZL') + conf.CHECK_CODE('return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;', + link=True, + define='HAVE_BUILTIN_CLZLL') + conf.CHECK_CODE('return __builtin_constant_p(1) ? 0 : 1;', + link=True, + define='HAVE_BUILTIN_CONSTANT_P') + conf.CHECK_CODE('return __builtin_expect(main != 0, 1) ? 0 : 1;', + link=True, + define='HAVE_BUILTIN_EXPECT') + conf.CHECK_CODE('return __builtin_popcountl(255L) == 8 ? 0 : 1;', + link=True, + define='HAVE_BUILTIN_POPCOUNTL') + conf.CHECK_CODE('return __builtin_types_compatible_p(char *, int) ? 1 : 0;', + link=True, + define='HAVE_BUILTIN_TYPES_COMPATIBLE_P') + conf.CHECK_CODE('int *foo = (int[]) { 1, 2, 3, 4 }; return foo[0] ? 0 : 1;', + define='HAVE_COMPOUND_LITERALS') + conf.CHECK_CODE("""#include <ctype.h> + int main(void) { return isblank(' ') ? 0 : 1; }""", + link=True, addmain=False, add_headers=False, + define='HAVE_ISBLANK') + conf.CHECK_CODE('int x = 1; __typeof__(x) i; i = x; return i == x ? 0 : 1;', + link=True, + define='HAVE_TYPEOF') + conf.CHECK_CODE('int __attribute__((warn_unused_result)) func(int x) { return x; }', + addmain=False, link=False, cflags="-Werror", + define='HAVE_WARN_UNUSED_RESULT') + +def build(bld): + bld.SAMBA_LIBRARY('ccan', + vnum="0.1-init-1161-g661d41f", + source=bld.path.ant_glob('*/*.c'), + private_library=True) |