static int verbose;
enum test_style {
- EXECUTE,
- OUTSIDE_MAIN,
- DEFINES_FUNC,
- INSIDE_MAIN
+ OUTSIDE_MAIN = 0x1,
+ DEFINES_FUNC = 0x2,
+ INSIDE_MAIN = 0x4,
+ DEFINES_EVERYTHING = 0x8,
+ MAY_NOT_COMPILE = 0x10,
+ EXECUTE = 0x8000
};
struct test {
};
static struct test tests[] = {
+ { "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE, NULL,
+ "#include <sys/types.h>\n"
+ "int main(int argc, char *argv[]) {\n"
+ " return sizeof(off_t) == 4 ? 0 : 1;\n"
+ "}\n" },
{ "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,
"static int __attribute__((unused)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL,
"static int __attribute__((used)) func(int x) { return x; }" },
- { "HAVE_BIG_ENDIAN", EXECUTE, NULL,
+ { "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
"union { int i; char c[sizeof(int)]; } u;\n"
"u.i = 0x01020304;\n"
"return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;" },
{ "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL,
"#include <byteswap.h>\n" },
{ "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL,
- "char **foo = (char *[]) { \"x\", \"y\", \"z\" };\n"
+ "int *foo = (int[]) { 1, 2, 3, 4 };\n"
"return foo[0] ? 0 : 1;" },
+ { "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE,
+ "HAVE_32BIT_OFF_T",
+ "#define _FILE_OFFSET_BITS 64\n"
+ "#include <sys/types.h>\n"
+ "int main(int argc, char *argv[]) {\n"
+ " return sizeof(off_t) == 8 ? 0 : 1;\n"
+ "}\n" },
{ "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(); }" },
- { "HAVE_LITTLE_ENDIAN", EXECUTE, NULL,
+ { "HAVE_ISBLANK", DEFINES_FUNC, NULL,
+ "#include <ctype.h>\n"
+ "static int func(void) { return isblank(' '); }" },
+ { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
"union { int i; char c[sizeof(int)]; } u;\n"
"u.i = 0x01020304;\n"
"return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;" },
+ { "HAVE_MEMMEM", DEFINES_FUNC, NULL,
+ "#define _GNU_SOURCE\n"
+ "#include <string.h>\n"
+ "static void *func(void *h, size_t hl, void *n, size_t nl) {\n"
+ "return memmem(h, hl, n, nl);"
+ "}\n", },
{ "HAVE_MMAP", DEFINES_FUNC, NULL,
"#include <sys/mman.h>\n"
"static void *func(int fd) {\n"
" return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
"}" },
- { "HAVE_NESTED_FUNCTIONS", DEFINES_FUNC, NULL,
- "static int func(int val) {\n"
- " auto void add(int val2);\n"
- " void add(int val2) { val += val2; }\n"
- " add(7);\n"
- " return val;\n"
- "}" },
+ { "HAVE_QSORT_R_PRIVATE_LAST",
+ DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL,
+ "#define _GNU_SOURCE 1\n"
+ "#include <stdlib.h>\n"
+ "static int cmp(const void *lp, const void *rp, void *priv) {\n"
+ " *(unsigned int *)priv = 1;\n"
+ " return *(const int *)lp - *(const int *)rp; }\n"
+ "int main(void) {\n"
+ " int array[] = { 9, 2, 5 };\n"
+ " unsigned int called = 0;\n"
+ " qsort_r(array, 3, sizeof(int), cmp, &called);\n"
+ " return called && array[0] == 2 && array[1] == 5 && array[2] == 9 ? 0 : 1;\n"
+ "}\n" },
+ { "HAVE_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL,
+ "static long nest(const void *base, unsigned int i)\n"
+ "{\n"
+ " if (i == 0)\n"
+ " return (const char *)&i - (const char *)base;\n"
+ " return nest(base, i-1);\n"
+ "}\n"
+ "int main(int argc, char *argv[]) {\n"
+ " return (nest(&argc, argc) > 0) ? 0 : 1\n;"
+ "}\n" },
{ "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL,
"return ({ int x = argc; x == argc ? 0 : 1; });" },
{ "HAVE_TYPEOF", INSIDE_MAIN, NULL,
return ret;
}
-static char *connect_args(char *argv[], const char *extra)
+static char *connect_args(const char *argv[], const char *extra)
{
unsigned int i, len = strlen(extra) + 1;
char *ret;
err(1, "creating %s", INPUT_FILE);
fprintf(outf, "%s", PRE_BOILERPLATE);
- switch (test->style) {
- case EXECUTE:
+ switch (test->style & ~(EXECUTE|MAY_NOT_COMPILE)) {
case INSIDE_MAIN:
fprintf(outf, "%s", MAIN_START_BOILERPLATE);
fprintf(outf, "%s", test->fragment);
fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
fprintf(outf, "%s", MAIN_END_BOILERPLATE);
break;
+ case DEFINES_EVERYTHING:
+ fprintf(outf, "%s", test->fragment);
+ break;
+ default:
+ abort();
+
}
fclose(outf);
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)
+ if ((test->style & EXECUTE) && !(test->style & MAY_NOT_COMPILE))
errx(1, "Test for %s did not compile:\n%s",
test->name, output);
test->answer = false;
/* Compile succeeded. */
free(output);
/* We run INSIDE_MAIN tests for sanity checking. */
- if (test->style == EXECUTE || test->style == INSIDE_MAIN) {
+ if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
output = run("./" OUTPUT_FILE, &status);
- if (test->style == INSIDE_MAIN && status != 0)
+ if (!(test->style & EXECUTE) && status != 0)
errx(1, "Test for %s failed with %i:\n%s",
test->name, status, output);
if (verbose && status)
return test->answer;
}
-int main(int argc, char *argv[])
+int main(int argc, const char *argv[])
{
char *cmd;
- char *default_args[] = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL };
unsigned int i;
+ const char *default_args[]
+ = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL };
if (argc > 1) {
if (strcmp(argv[1], "--help") == 0) {
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;
}
projects / ccan / blobdiff