static struct test tests[] = {
{ "HAVE_ALIGNOF", INSIDE_MAIN, NULL,
"return __alignof__(double) > 0 ? 0 : 1;" },
+ { "HAVE_ASPRINTF", DEFINES_FUNC, NULL,
+ "#define _GNU_SOURCE\n"
+ "#include <stdio.h>\n"
+ "static char *func(int x) {"
+ " char *p;\n"
+ " if (asprintf(&p, \"%u\", x) == -1) p = NULL;"
+ " return p;\n"
+ "}" },
{ "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL,
"static int __attribute__((cold)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL,
"static int __attribute__((const)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL,
"typedef short __attribute__((__may_alias__)) short_a;" },
+ { "HAVE_ATTRIBUTE_NORETURN", DEFINES_FUNC, NULL,
+ "#include <stdlib.h>\n"
+ "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
{ "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL,
"static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }" },
{ "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL,
"return __builtin_expect(argc == 1, 1) ? 0 : 1;" },
{ "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL,
"return __builtin_ffsl(0L) == 0 ? 0 : 1;" },
+ { "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL,
+ "return __builtin_ffsll(0LL) == 0 ? 0 : 1;" },
{ "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL,
"return __builtin_popcountl(255L) == 8 ? 0 : 1;" },
{ "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL,
{ "HAVE_FOR_LOOP_DECLARATION", INSIDE_MAIN, NULL,
"for (int i = 0; i < argc; i++) { return 0; };\n"
"return 1;" },
+ { "HAVE_FLEXIBLE_ARRAY_MEMBER", OUTSIDE_MAIN, NULL,
+ "struct foo { unsigned int x; int arr[]; };" },
{ "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL,
"#include <unistd.h>\n"
"static int func(void) { return getpagesize(); }" },
if (system("cat " INPUT_FILE) == -1);
output = run(cmd, &status);
- if (status != 0) {
+ if (status != 0 || strstr(output, "warning")) {
if (verbose)
- printf("Compile fail for %s, status %i: %s\n",
+ printf("Compile %s for %s, status %i: %s\n",
+ status ? "fail" : "warning",
test->name, status, output);
if (test->style == EXECUTE)
errx(1, "Test for %s did not compile:\n%s",
unlink(INPUT_FILE);
cmd[strlen(cmd) - strlen(" -o " OUTPUT_FILE " " INPUT_FILE)] = '\0';
- printf("/* Generated by CCAN configurator */\n");
+ printf("/* Generated by CCAN configurator */\n"
+ "#ifndef CCAN_CONFIG_H\n"
+ "#define CCAN_CONFIG_H\n");
+ printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
printf("#define CCAN_COMPILER \"%s\"\n", argv[1]);
printf("#define CCAN_CFLAGS \"%s\"\n\n", cmd + strlen(argv[1]) + 1);
for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
printf("#define %s %u\n", tests[i].name, tests[i].answer);
+ printf("#endif /* CCAN_CONFIG_H */\n");
return 0;
}