* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+#define _POSIX_C_SOURCE 200809L /* For pclose, popen, strdup */
+
#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>
+#ifdef _MSC_VER
+#define popen _popen
+#define pclose _pclose
+#endif
+
#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"
+#ifdef _WIN32
+#define DIR_SEP "\\"
+#else
+#define DIR_SEP "/"
+#endif
+
static int verbose;
enum test_style {
const char *depends;
const char *link;
const char *fragment;
+ const char *flags;
+ 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,
+ { "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
"#include <sys/types.h>\n"
- "int main(int argc, char *argv[]) {\n"
+ "int main(void) {\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,
+ "#ifndef _GNU_SOURCE\n"
"#define _GNU_SOURCE\n"
+ "#endif\n"
"#include <stdio.h>\n"
"static char *func(int x) {"
" char *p;\n"
"#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, ...) { }" },
+ "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { (void)fmt; }" },
{ "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, NULL,
"static int __attribute__((unused)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_USED", OUTSIDE_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_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",
" struct timespec ts;\n"
" clock_gettime(CLOCK_REALTIME, &ts);\n"
" return ts;\n"
- "}\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,
+ { "HAVE_FCHDIR", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
"#include <sys/types.h>\n"
"#include <sys/stat.h>\n"
"#include <fcntl.h>\n"
" if (arg == 4)\n"
" warnx(\"warn %u\", arg);\n"
"}\n" },
- { "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE,
+ { "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
"HAVE_32BIT_OFF_T", NULL,
"#define _FILE_OFFSET_BITS 64\n"
"#include <sys/types.h>\n"
- "int main(int argc, char *argv[]) {\n"
+ "int main(void) {\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;" },
+ "int ret = 1;\n"
+ "for (int i = 0; i < argc; i++) { ret = 0; };\n"
+ "return ret;" },
{ "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,
+ "#ifndef _GNU_SOURCE\n"
"#define _GNU_SOURCE\n"
+ "#endif\n"
"#include <ctype.h>\n"
"static int func(void) { return isblank(' '); }" },
{ "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, NULL,
"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,
+ "#ifndef _GNU_SOURCE\n"
"#define _GNU_SOURCE\n"
+ "#endif\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,
+ "#ifndef _GNU_SOURCE\n"
+ "#define _GNU_SOURCE\n"
+ "#endif\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,
+ { "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
"#include <sys/types.h>\n"
"#include <sys/stat.h>\n"
"#include <fcntl.h>\n"
"}\n" },
{ "HAVE_QSORT_R_PRIVATE_LAST",
DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
- "#define _GNU_SOURCE 1\n"
+ "#ifndef _GNU_SOURCE\n"
+ "#define _GNU_SOURCE\n"
+ "#endif\n"
"#include <stdlib.h>\n"
"static int cmp(const void *lp, const void *rp, void *priv) {\n"
" *(unsigned int *)priv = 1;\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"
+ "#include <stddef.h>\n"
+ "static ptrdiff_t 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;"
+ " (void)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; });" },
"#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"
+ " (void)argc;\n"
+ " char pad[sizeof(int *) * 1];\n"
+ " strncpy(pad, argv[0], sizeof(pad));\n"
+ " int *x = (int *)pad, *y = (int *)(pad + 1);\n"
+ " return *x == *y;\n"
+ "}\n" },
{ "HAVE_UTIME", 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"
"}" },
+ { "HAVE_OPENMP", INSIDE_MAIN, NULL, NULL,
+ "int i;\n"
+ "#pragma omp parallel for\n"
+ "for(i = 0; i < 0; i++) {};\n"
+ "return 0;\n",
+ "-Werror -fopenmp" },
+ { "HAVE_VALGRIND_MEMCHECK_H", OUTSIDE_MAIN, NULL, NULL,
+ "#include <valgrind/memcheck.h>\n" },
+ { "HAVE_UCONTEXT", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
+ NULL, NULL,
+ "#include <ucontext.h>\n"
+ "static int x = 0;\n"
+ "static char stack[2048];\n"
+ "static ucontext_t a, b;\n"
+ "static void fn(void) {\n"
+ " x |= 2;\n"
+ " setcontext(&b);\n"
+ " x |= 4;\n"
+ "}\n"
+ "int main(void) {\n"
+ " x |= 1;\n"
+ " getcontext(&a);\n"
+ " a.uc_stack.ss_sp = stack;\n"
+ " a.uc_stack.ss_size = sizeof(stack);\n"
+ " makecontext(&a, fn, 0);\n"
+ " swapcontext(&b, &a);\n"
+ " return (x == 3) ? 0 : 1;\n"
+ "}\n"
+ },
+ { "HAVE_POINTER_SAFE_MAKECONTEXT", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
+ "HAVE_UCONTEXT", NULL,
+ "#include <stddef.h>\n"
+ "#include <ucontext.h>\n"
+ "static int worked = 0;\n"
+ "static char stack[1024];\n"
+ "static ucontext_t a, b;\n"
+ "static void fn(void *p, void *q) {\n"
+ " void *cp = &worked;\n"
+ " void *cq = (void *)(~((ptrdiff_t)cp));\n"
+ " if ((p == cp) && (q == cq))\n"
+ " worked = 1;\n"
+ " setcontext(&b);\n"
+ "}\n"
+ "int main(void) {\n"
+ " void *ap = &worked;\n"
+ " void *aq = (void *)(~((ptrdiff_t)ap));\n"
+ " getcontext(&a);\n"
+ " a.uc_stack.ss_sp = stack;\n"
+ " a.uc_stack.ss_size = sizeof(stack);\n"
+ " makecontext(&a, (void (*)(void))fn, 2, ap, aq);\n"
+ " swapcontext(&b, &a);\n"
+ " return worked ? 0 : 1;\n"
+ "}\n"
+ },
};
-static char *grab_fd(int fd)
+static char *grab_stream(FILE *file)
{
- int ret;
- size_t max, size = 0;
+ size_t max, ret, size = 0;
char *buffer;
- max = 16384;
- buffer = malloc(max+1);
- while ((ret = read(fd, buffer + size, max - size)) > 0) {
+ max = BUFSIZ;
+ buffer = malloc(max);
+ while ((ret = fread(buffer+size, 1, max - size, file)) == max - size) {
size += ret;
- if (size == max)
- buffer = realloc(buffer, max *= 2);
+ buffer = realloc(buffer, max *= 2);
}
- if (ret < 0)
+ size += ret;
+ if (ferror(file))
err(1, "reading from command");
buffer[size] = '\0';
return buffer;
static char *run(const char *cmd, int *exitstatus)
{
- pid_t pid;
- int p[2];
+ static const char redir[] = " 2>&1";
+ size_t cmdlen;
+ char *cmdredir;
+ FILE *cmdout;
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));
- }
+ cmdlen = strlen(cmd);
+ cmdredir = malloc(cmdlen + sizeof(redir));
+ memcpy(cmdredir, cmd, cmdlen);
+ memcpy(cmdredir + cmdlen, redir, sizeof(redir));
+
+ cmdout = popen(cmdredir, "r");
+ if (!cmdout)
+ err(1, "popen \"%s\"", cmdredir);
- 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);
+ free(cmdredir);
+
+ ret = grab_stream(cmdout);
+ *exitstatus = pclose(cmdout);
return ret;
}
}
#define PRE_BOILERPLATE "/* Test program generated by configurator. */\n"
-#define MAIN_START_BOILERPLATE "int main(int argc, char *argv[]) {\n"
+#define MAIN_START_BOILERPLATE \
+ "int main(int argc, char *argv[]) {\n" \
+ " (void)argc;\n" \
+ " (void)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;
+ char *output, *newcmd;
FILE *outf;
int status;
char *dep;
/* Space-separated dependencies, could be ! for inverse. */
- while ((len = strcspn(deps, " "))) {
+ while ((len = strcspn(deps, " ")) != 0) {
bool positive = true;
if (deps[len]) {
dep = strdup(deps);
test->done = true;
return test->answer;
}
+ if (deps[len])
+ free(dep);
+
deps += len;
deps += strspn(deps, " ");
}
fclose(outf);
if (verbose > 1)
- if (system("cat " INPUT_FILE) == -1);
+ if (system("cat " INPUT_FILE) == -1)
+ ;
+
+ newcmd = strdup(cmd);
+
+ if (test->flags) {
+ newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ")
+ + strlen(test->flags) + 1);
+ strcat(newcmd, " ");
+ strcat(newcmd, test->flags);
+ if (verbose > 1)
+ printf("Extra flags line: %s", newcmd);
+ }
if (test->link) {
- char *newcmd;
- newcmd = malloc(strlen(cmd) + strlen(" ")
+ newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ")
+ strlen(test->link) + 1);
- sprintf(newcmd, "%s %s", cmd, test->link);
+ strcat(newcmd, " ");
+ strcat(newcmd, test->link);
if (verbose > 1)
printf("Extra link line: %s", newcmd);
- cmd = newcmd;
}
- output = run(cmd, &status);
+ output = run(newcmd, &status);
+
+ free(newcmd);
+
if (status != 0 || strstr(output, "warning")) {
if (verbose)
printf("Compile %s for %s, status %i: %s\n",
free(output);
/* We run INSIDE_MAIN tests for sanity checking. */
if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
- output = run("./" OUTPUT_FILE, &status);
+ output = run("." DIR_SEP OUTPUT_FILE, &status);
if (!(test->style & EXECUTE) && status != 0)
errx(1, "Test for %s failed with %i:\n%s",
test->name, status, 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;
}
cmd = connect_args(argv, " -o " OUTPUT_FILE " " INPUT_FILE);
for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
run_test(cmd, &tests[i]);
+ free(cmd);
- unlink(OUTPUT_FILE);
- unlink(INPUT_FILE);
+ remove(OUTPUT_FILE);
+ remove(INPUT_FILE);
printf("/* Generated by CCAN configurator */\n"
"#ifndef CCAN_CONFIG_H\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, ""));
+ cmd = connect_args(argv+1, "");
+ printf("#define CCAN_CFLAGS \"%s\"\n\n", cmd);
+ free(cmd);
/* 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++)
projects / ccan / blobdiff