Merge vis-tests into test directory

Going forward all tests should be submitted here directly.

1 files changed, 571 insertions, 0 deletions

diff --git a/test/core/ccan-config.c b/test/core/ccan-config.c
new file mode 100644
index 0000000..f358f04
--- /dev/null
+++ b/test/core/ccan-config.c
@@ -0,0 +1,571 @@
+/* Simple tool to create config.h.
+ * Would be much easier with ccan modules, but deliberately standalone.
+ *
+ * Copyright 2011 Rusty Russell <rusty@rustcorp.com.au>.  MIT license.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <err.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+
+#define DEFAULT_COMPILER "cc"
+#define DEFAULT_FLAGS "-g3 -ggdb -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition"
+
+#define OUTPUT_FILE "configurator.out"
+#define INPUT_FILE "configuratortest.c"
+
+static int verbose;
+
+enum test_style {
+	OUTSIDE_MAIN		= 0x1,
+	DEFINES_FUNC		= 0x2,
+	INSIDE_MAIN		= 0x4,
+	DEFINES_EVERYTHING	= 0x8,
+	MAY_NOT_COMPILE		= 0x10,
+	EXECUTE			= 0x8000
+};
+
+struct test {
+	const char *name;
+	enum test_style style;
+	const char *depends;
+	const char *link;
+	const char *fragment;
+	const char *overrides; /* On success, force this to '1' */
+	bool done;
+	bool answer;
+};
+
+static struct test tests[] = {
+	{ "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE, NULL, 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, NULL,
+	  "return __alignof__(double) > 0 ? 0 : 1;" },
+	{ "HAVE_ASPRINTF", DEFINES_FUNC, NULL, 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, NULL,
+	  "static int __attribute__((cold)) func(int x) { return x; }" },
+	{ "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL, NULL,
+	  "static int __attribute__((const)) func(int x) { return x; }" },
+	{ "HAVE_ATTRIBUTE_PURE", DEFINES_FUNC, NULL, NULL,
+	  "static int __attribute__((pure)) func(int x) { return x; }" },
+	{ "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL, NULL,
+	  "typedef short __attribute__((__may_alias__)) short_a;" },
+	{ "HAVE_ATTRIBUTE_NORETURN", DEFINES_FUNC, NULL, NULL,
+	  "#include <stdlib.h>\n"
+	  "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
+	{ "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL, NULL,
+	  "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }" },
+	{ "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, NULL,
+	  "static int __attribute__((unused)) func(int x) { return x; }" },
+	{ "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL, NULL,
+	  "static int __attribute__((used)) func(int x) { return x; }" },
+	{ "HAVE_BACKTRACE", DEFINES_FUNC, NULL, NULL,
+	  "#include <execinfo.h>\n"
+	  "static int func(int x) {"
+	  "	void *bt[10];\n"
+	  "	return backtrace(bt, 10) < x;\n"
+	  "}" },
+	{ "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, 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_BSWAP_64", DEFINES_FUNC, "HAVE_BYTESWAP_H", NULL,
+	  "#include <byteswap.h>\n"
+	  "static int func(int x) { return bswap_64(x); }" },
+	{ "HAVE_BUILTIN_CHOOSE_EXPR", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_choose_expr(1, 0, \"garbage\");" },
+	{ "HAVE_BUILTIN_CLZ", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_CLZL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_CLZLL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_CTZ", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_ctz(1 << (sizeof(int)*8 - 1)) == (sizeof(int)*8 - 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_CTZL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_ctzl(1UL << (sizeof(long)*8 - 1)) == (sizeof(long)*8 - 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_CTZLL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_ctzll(1ULL << (sizeof(long long)*8 - 1)) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_CONSTANT_P", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_constant_p(1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_EXPECT", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_expect(argc == 1, 1) ? 0 : 1;" },
+	{ "HAVE_BUILTIN_FFS", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_ffs(0) == 0 ? 0 : 1;" },
+	{ "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_ffsl(0L) == 0 ? 0 : 1;" },
+	{ "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_ffsll(0LL) == 0 ? 0 : 1;" },
+	{ "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_popcountl(255L) == 8 ? 0 : 1;" },
+	{ "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL, NULL,
+	  "return __builtin_types_compatible_p(char *, int) ? 1 : 0;" },
+	{ "HAVE_ICCARM_INTRINSICS", DEFINES_FUNC, NULL, NULL,
+	  "#include <intrinsics.h>\n"
+	  "int func(int v) {\n"
+	  "	return __CLZ(__RBIT(v));\n"
+	  "}" },
+	{ "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL, NULL,
+	  "#include <byteswap.h>\n" },
+	{ "HAVE_CLOCK_GETTIME",
+	  DEFINES_FUNC, "HAVE_STRUCT_TIMESPEC", NULL,
+	  "#include <time.h>\n"
+	  "static struct timespec func(void) {\n"
+	  "	struct timespec ts;\n"
+	  "	clock_gettime(CLOCK_REALTIME, &ts);\n"
+	  "	return ts;\n"
+	  "}\n" },
+	{ "HAVE_CLOCK_GETTIME_IN_LIBRT",
+	  DEFINES_FUNC,
+	  "HAVE_STRUCT_TIMESPEC !HAVE_CLOCK_GETTIME",
+	  "-lrt",
+	  "#include <time.h>\n"
+	  "static struct timespec func(void) {\n"
+	  "	struct timespec ts;\n"
+	  "	clock_gettime(CLOCK_REALTIME, &ts);\n"
+	  "	return ts;\n"
+	  "}\n",
+	  /* This means HAVE_CLOCK_GETTIME, too */
+	  "HAVE_CLOCK_GETTIME" },
+	{ "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, NULL,
+	  "int *foo = (int[]) { 1, 2, 3, 4 };\n"
+	  "return foo[0] ? 0 : 1;" },
+	{ "HAVE_FCHDIR", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
+	  "#include <sys/types.h>\n"
+	  "#include <sys/stat.h>\n"
+	  "#include <fcntl.h>\n"
+	  "#include <unistd.h>\n"
+	  "int main(void) {\n"
+	  "	int fd = open(\"..\", O_RDONLY);\n"
+	  "	return fchdir(fd) == 0 ? 0 : 1;\n"
+	  "}\n" },
+	{ "HAVE_ERR_H", DEFINES_FUNC, NULL, NULL,
+	  "#include <err.h>\n"
+	  "static void func(int arg) {\n"
+	  "	if (arg == 0)\n"
+	  "		err(1, \"err %u\", arg);\n"
+	  "	if (arg == 1)\n"
+	  "		errx(1, \"err %u\", arg);\n"
+	  "	if (arg == 3)\n"
+	  "		warn(\"warn %u\", arg);\n"
+	  "	if (arg == 4)\n"
+	  "		warnx(\"warn %u\", arg);\n"
+	  "}\n" },
+	{ "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE,
+	  "HAVE_32BIT_OFF_T", NULL,
+	  "#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, NULL,
+	  "for (int i = 0; i < argc; i++) { return 0; };\n"
+	  "return 1;" },
+	{ "HAVE_FLEXIBLE_ARRAY_MEMBER", OUTSIDE_MAIN, NULL, NULL,
+	  "struct foo { unsigned int x; int arr[]; };" },
+	{ "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL, NULL,
+	  "#include <unistd.h>\n"
+	  "static int func(void) { return getpagesize(); }" },
+	{ "HAVE_ISBLANK", DEFINES_FUNC, NULL, NULL,
+	  "#define _GNU_SOURCE\n"
+	  "#include <ctype.h>\n"
+	  "static int func(void) { return isblank(' '); }" },
+	{ "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, 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, 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_MEMRCHR", DEFINES_FUNC, NULL, NULL,
+	  "#define _GNU_SOURCE\n"
+	  "#include <string.h>\n"
+	  "static void *func(void *s, int c, size_t n) {\n"
+	  "return memrchr(s, c, n);"
+	  "}\n", },
+	{ "HAVE_MMAP", DEFINES_FUNC, NULL, NULL,
+	  "#include <sys/mman.h>\n"
+	  "static void *func(int fd) {\n"
+	  "	return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
+	  "}" },
+	{ "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
+	  "#include <sys/types.h>\n"
+	  "#include <sys/stat.h>\n"
+	  "#include <fcntl.h>\n"
+	  "int main(void) {\n"
+	  "	return open(\"/proc/self/maps\", O_RDONLY) != -1 ? 0 : 1;\n"
+	  "}\n" },
+	{ "HAVE_QSORT_R_PRIVATE_LAST",
+	  DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, 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_STRUCT_TIMESPEC",
+	  DEFINES_FUNC, NULL, NULL,
+	  "#include <time.h>\n"
+	  "static void func(void) {\n"
+	  "	struct timespec ts;\n"
+	  "	ts.tv_sec = ts.tv_nsec = 1;\n"
+	  "}\n" },
+	{ "HAVE_SECTION_START_STOP",
+	  DEFINES_FUNC, NULL, NULL,
+	  "static void *__attribute__((__section__(\"mysec\"))) p = &p;\n"
+	  "static int func(void) {\n"
+	  "	extern void *__start_mysec[], *__stop_mysec[];\n"
+	  "	return __stop_mysec - __start_mysec;\n"
+	  "}\n" },
+	{ "HAVE_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL, 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, NULL,
+	  "return ({ int x = argc; x == argc ? 0 : 1; });" },
+	{ "HAVE_SYS_FILIO_H", OUTSIDE_MAIN, NULL, NULL, /* Solaris needs this for FIONREAD */
+	  "#include <sys/filio.h>\n" },
+	{ "HAVE_SYS_TERMIOS_H", OUTSIDE_MAIN, NULL, NULL,
+	  "#include <sys/termios.h>\n" },
+	{ "HAVE_TYPEOF", INSIDE_MAIN, NULL, NULL,
+	  "__typeof__(argc) i; i = argc; return i == argc ? 0 : 1;" },
+	{ "HAVE_UNALIGNED_ACCESS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
+	  "#include <string.h>\n"
+	  "int main(int argc, char *argv[]) {\n"
+	  "     char pad[sizeof(int *) * 1];\n"
+	  "	memcpy(pad, argv[0], sizeof(pad));\n"
+	  "	return *(int *)(pad) == *(int *)(pad + 1);\n"
+	  "}\n" },
+	{ "HAVE_UTIME", DEFINES_FUNC, NULL, NULL,
+	  "#include <sys/types.h>\n"
+	  "#include <utime.h>\n"
+	  "static int func(const char *filename) {\n"
+	  "	struct utimbuf times = { 0 };\n"
+	  "	return utime(filename, &times);\n"
+	  "}" },
+	{ "HAVE_WARN_UNUSED_RESULT", DEFINES_FUNC, NULL, NULL,
+	  "#include <sys/types.h>\n"
+	  "#include <utime.h>\n"
+	  "static __attribute__((warn_unused_result)) int func(int i) {\n"
+	  "	return i + 1;\n"
+	  "}" },
+};
+
+static char *grab_fd(int fd)
+{
+	int ret;
+	size_t max, size = 0;
+	char *buffer;
+
+	max = 16384;
+	buffer = malloc(max+1);
+	while ((ret = read(fd, buffer + size, max - size)) > 0) {
+		size += ret;
+		if (size == max)
+			buffer = realloc(buffer, max *= 2);
+	}
+	if (ret < 0)
+		err(1, "reading from command");
+	buffer[size] = '\0';
+	return buffer;
+}
+
+static char *run(const char *cmd, int *exitstatus)
+{
+	pid_t pid;
+	int p[2];
+	char *ret;
+	int status;
+
+	if (pipe(p) != 0)
+		err(1, "creating pipe");
+
+	pid = fork();
+	if (pid == -1)
+		err(1, "forking");
+
+	if (pid == 0) {
+		if (dup2(p[1], STDOUT_FILENO) != STDOUT_FILENO
+		    || dup2(p[1], STDERR_FILENO) != STDERR_FILENO
+		    || close(p[0]) != 0
+		    || close(STDIN_FILENO) != 0
+		    || open("/dev/null", O_RDONLY) != STDIN_FILENO)
+			exit(128);
+
+		status = system(cmd);
+		if (WIFEXITED(status))
+			exit(WEXITSTATUS(status));
+		/* Here's a hint... */
+		exit(128 + WTERMSIG(status));
+	}
+
+	close(p[1]);
+	ret = grab_fd(p[0]);
+	/* This shouldn't fail... */
+	if (waitpid(pid, &status, 0) != pid)
+		err(1, "Failed to wait for child");
+	close(p[0]);
+	if (WIFEXITED(status))
+		*exitstatus = WEXITSTATUS(status);
+	else
+		*exitstatus = -WTERMSIG(status);
+	return ret;
+}
+
+static char *connect_args(const char *argv[], const char *extra)
+{
+	unsigned int i, len = strlen(extra) + 1;
+	char *ret;
+
+	for (i = 1; argv[i]; i++)
+		len += 1 + strlen(argv[i]);
+
+	ret = malloc(len);
+	len = 0;
+	for (i = 1; argv[i]; i++) {
+		strcpy(ret + len, argv[i]);
+		len += strlen(argv[i]);
+		if (argv[i+1])
+			ret[len++] = ' ';
+	}
+	strcpy(ret + len, extra);
+	return ret;
+}
+
+static struct test *find_test(const char *name)
+{
+	unsigned int i;
+
+	for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
+		if (strcmp(tests[i].name, name) == 0)
+			return &tests[i];
+	}
+	abort();
+}
+
+#define PRE_BOILERPLATE "/* Test program generated by configurator. */\n"
+#define MAIN_START_BOILERPLATE "int main(int argc, char *argv[]) {\n"
+#define USE_FUNC_BOILERPLATE "(void)func;\n"
+#define MAIN_BODY_BOILERPLATE "return 0;\n"
+#define MAIN_END_BOILERPLATE "}\n"
+
+static bool run_test(const char *cmd, struct test *test)
+{
+	char *output;
+	FILE *outf;
+	int status;
+
+	if (test->done)
+		return test->answer;
+
+	if (test->depends) {
+		size_t len;
+		const char *deps = test->depends;
+		char *dep;
+
+		/* Space-separated dependencies, could be ! for inverse. */
+		while ((len = strcspn(deps, " "))) {
+			bool positive = true;
+			if (deps[len]) {
+				dep = strdup(deps);
+				dep[len] = '\0';
+			} else {
+				dep = (char *)deps;
+			}
+
+			if (dep[0] == '!') {
+				dep++;
+				positive = false;
+			}
+			if (run_test(cmd, find_test(dep)) != positive) {
+				test->answer = false;
+				test->done = true;
+				return test->answer;
+			}
+			deps += len;
+			deps += strspn(deps, " ");
+		}
+	}
+
+	outf = fopen(INPUT_FILE, "w");
+	if (!outf)
+		err(1, "creating %s", INPUT_FILE);
+
+	fprintf(outf, "%s", PRE_BOILERPLATE);
+	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_END_BOILERPLATE);
+		break;
+	case OUTSIDE_MAIN:
+		fprintf(outf, "%s", test->fragment);
+		fprintf(outf, "%s", MAIN_START_BOILERPLATE);
+		fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
+		fprintf(outf, "%s", MAIN_END_BOILERPLATE);
+		break;
+	case DEFINES_FUNC:
+		fprintf(outf, "%s", test->fragment);
+		fprintf(outf, "%s", MAIN_START_BOILERPLATE);
+		fprintf(outf, "%s", USE_FUNC_BOILERPLATE);
+		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 (verbose > 1)
+		if (system("cat " INPUT_FILE) == -1)
+			;
+
+	if (test->link) {
+		char *newcmd;
+		newcmd = malloc(strlen(cmd) + strlen(" ")
+				+ strlen(test->link) + 1);
+		sprintf(newcmd, "%s %s", cmd, test->link);
+		if (verbose > 1)
+			printf("Extra link line: %s", newcmd);
+		cmd = newcmd;
+	}
+
+	output = run(cmd, &status);
+	if (status != 0 || strstr(output, "warning")) {
+		if (verbose)
+			printf("Compile %s for %s, status %i: %s\n",
+			       status ? "fail" : "warning",
+			       test->name, status, output);
+		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;
+		free(output);
+	} else {
+		/* Compile succeeded. */
+		free(output);
+		/* We run INSIDE_MAIN tests for sanity checking. */
+		if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
+			output = run("./" OUTPUT_FILE, &status);
+			if (!(test->style & EXECUTE) && status != 0)
+				errx(1, "Test for %s failed with %i:\n%s",
+				     test->name, status, output);
+			if (verbose && status)
+				printf("%s exited %i\n", test->name, status);
+			free(output);
+		}
+		test->answer = (status == 0);
+	}
+	test->done = true;
+
+	if (test->answer && test->overrides) {
+		struct test *override = find_test(test->overrides);
+		override->done = true;
+		override->answer = true;
+	}
+	return test->answer;
+}
+
+int main(int argc, const char *argv[])
+{
+	char *cmd;
+	unsigned int i;
+	const char *default_args[]
+		= { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL };
+
+	if (argc > 1) {
+		if (strcmp(argv[1], "--help") == 0) {
+			printf("Usage: configurator [-v] [<compiler> <flags>...]\n"
+			       "  <compiler> <flags> will have \"-o <outfile> <infile.c>\" appended\n"
+			       "Default: %s %s\n",
+			       DEFAULT_COMPILER, DEFAULT_FLAGS);
+			exit(0);
+		}
+		if (strcmp(argv[1], "-v") == 0) {
+			argc--;
+			argv++;
+			verbose = 1;
+		} else if (strcmp(argv[1], "-vv") == 0) {
+			argc--;
+			argv++;
+			verbose = 2;
+		}
+	}
+
+	if (argc == 1)
+		argv = default_args;
+
+	cmd = connect_args(argv, " -o " OUTPUT_FILE " " INPUT_FILE);
+	for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
+		run_test(cmd, &tests[i]);
+
+	unlink(OUTPUT_FILE);
+	unlink(INPUT_FILE);
+
+	printf("/* Generated by CCAN configurator */\n"
+	       "#ifndef CCAN_CONFIG_H\n"
+	       "#define CCAN_CONFIG_H\n");
+	printf("#ifndef _GNU_SOURCE\n");
+	printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
+	printf("#endif\n");
+	printf("#define CCAN_COMPILER \"%s\"\n", argv[1]);
+	printf("#define CCAN_CFLAGS \"%s\"\n\n", connect_args(argv+1, ""));
+	/* This one implies "#include <ccan/..." works, eg. for tdb2.h */
+	printf("#define HAVE_CCAN 1\n");
+	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;
+}