1 /* Simple tool to create config.h.
2 * Would be much easier with ccan modules, but deliberately standalone.
4 * Copyright 2011 Rusty Russell <rusty@rustcorp.com.au>. MIT license.
6 * c12r_err, c12r_errx functions copied from ccan/err/err.c
7 * Copyright Rusty Russell <rusty@rustcorp.com.au>. CC0 (Public domain) License.
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 #define _POSIX_C_SOURCE 200809L /* For pclose, popen, strdup */
38 #define pclose _pclose
42 #define DEFAULT_COMPILER "cl"
43 /* Note: Dash options avoid POSIX path conversion when used under msys bash
44 * and are therefore preferred to slash (e.g. -nologo over /nologo)
45 * Note: Disable Warning 4200 "nonstandard extension used : zero-sized array
46 * in struct/union" for flexible array members.
48 #define DEFAULT_FLAGS "-nologo -Zi -W4 -wd4200 " \
49 "-D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS"
50 #define DEFAULT_OUTPUT_EXE_FLAG "-Fe:"
52 #define DEFAULT_COMPILER "cc"
53 #define DEFAULT_FLAGS "-g3 -ggdb -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition"
54 #define DEFAULT_OUTPUT_EXE_FLAG "-o"
57 #define OUTPUT_FILE "configurator.out"
58 #define INPUT_FILE "configuratortest.c"
66 static const char *progname = "";
73 DEFINES_EVERYTHING = 0x8,
74 MAY_NOT_COMPILE = 0x10,
80 enum test_style style;
85 const char *overrides; /* On success, force this to '1' */
90 static struct test tests[] = {
91 { "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
92 "#include <sys/types.h>\n"
94 " return sizeof(off_t) == 4 ? 0 : 1;\n"
96 { "HAVE_ALIGNOF", INSIDE_MAIN, NULL, NULL,
97 "return __alignof__(double) > 0 ? 0 : 1;" },
98 { "HAVE_ASPRINTF", DEFINES_FUNC, NULL, NULL,
99 "#ifndef _GNU_SOURCE\n"
100 "#define _GNU_SOURCE\n"
102 "#include <stdio.h>\n"
103 "static char *func(int x) {"
105 " if (asprintf(&p, \"%u\", x) == -1) \n"
109 { "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL, NULL,
110 "static int __attribute__((cold)) func(int x) { return x; }" },
111 { "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL, NULL,
112 "static int __attribute__((const)) func(int x) { return x; }" },
113 { "HAVE_ATTRIBUTE_PURE", DEFINES_FUNC, NULL, NULL,
114 "static int __attribute__((pure)) func(int x) { return x; }" },
115 { "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL, NULL,
116 "typedef short __attribute__((__may_alias__)) short_a;" },
117 { "HAVE_ATTRIBUTE_NORETURN", DEFINES_FUNC, NULL, NULL,
118 "#include <stdlib.h>\n"
119 "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
120 { "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL, NULL,
121 "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { (void)fmt; }" },
122 { "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, NULL,
123 "static int __attribute__((unused)) func(int x) { return x; }" },
124 { "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL, NULL,
125 "static int __attribute__((used)) func(int x) { return x; }" },
126 { "HAVE_BACKTRACE", DEFINES_FUNC, NULL, NULL,
127 "#include <execinfo.h>\n"
128 "static int func(int x) {"
130 " return backtrace(bt, 10) < x;\n"
132 { "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, NULL,
133 "union { int i; char c[sizeof(int)]; } u;\n"
134 "u.i = 0x01020304;\n"
135 "return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;" },
136 { "HAVE_BSWAP_64", DEFINES_FUNC, "HAVE_BYTESWAP_H", NULL,
137 "#include <byteswap.h>\n"
138 "static int func(int x) { return bswap_64(x); }" },
139 { "HAVE_BUILTIN_CHOOSE_EXPR", INSIDE_MAIN, NULL, NULL,
140 "return __builtin_choose_expr(1, 0, \"garbage\");" },
141 { "HAVE_BUILTIN_CLZ", INSIDE_MAIN, NULL, NULL,
142 "return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;" },
143 { "HAVE_BUILTIN_CLZL", INSIDE_MAIN, NULL, NULL,
144 "return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;" },
145 { "HAVE_BUILTIN_CLZLL", INSIDE_MAIN, NULL, NULL,
146 "return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
147 { "HAVE_BUILTIN_CTZ", INSIDE_MAIN, NULL, NULL,
148 "return __builtin_ctz(1 << (sizeof(int)*8 - 1)) == (sizeof(int)*8 - 1) ? 0 : 1;" },
149 { "HAVE_BUILTIN_CTZL", INSIDE_MAIN, NULL, NULL,
150 "return __builtin_ctzl(1UL << (sizeof(long)*8 - 1)) == (sizeof(long)*8 - 1) ? 0 : 1;" },
151 { "HAVE_BUILTIN_CTZLL", INSIDE_MAIN, NULL, NULL,
152 "return __builtin_ctzll(1ULL << (sizeof(long long)*8 - 1)) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
153 { "HAVE_BUILTIN_CONSTANT_P", INSIDE_MAIN, NULL, NULL,
154 "return __builtin_constant_p(1) ? 0 : 1;" },
155 { "HAVE_BUILTIN_EXPECT", INSIDE_MAIN, NULL, NULL,
156 "return __builtin_expect(argc == 1, 1) ? 0 : 1;" },
157 { "HAVE_BUILTIN_FFS", INSIDE_MAIN, NULL, NULL,
158 "return __builtin_ffs(0) == 0 ? 0 : 1;" },
159 { "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL, NULL,
160 "return __builtin_ffsl(0L) == 0 ? 0 : 1;" },
161 { "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL, NULL,
162 "return __builtin_ffsll(0LL) == 0 ? 0 : 1;" },
163 { "HAVE_BUILTIN_POPCOUNT", INSIDE_MAIN, NULL, NULL,
164 "return __builtin_popcount(255) == 8 ? 0 : 1;" },
165 { "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL, NULL,
166 "return __builtin_popcountl(255L) == 8 ? 0 : 1;" },
167 { "HAVE_BUILTIN_POPCOUNTLL", INSIDE_MAIN, NULL, NULL,
168 "return __builtin_popcountll(255LL) == 8 ? 0 : 1;" },
169 { "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL, NULL,
170 "return __builtin_types_compatible_p(char *, int) ? 1 : 0;" },
171 { "HAVE_ICCARM_INTRINSICS", DEFINES_FUNC, NULL, NULL,
172 "#include <intrinsics.h>\n"
173 "int func(int v) {\n"
174 " return __CLZ(__RBIT(v));\n"
176 { "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL, NULL,
177 "#include <byteswap.h>\n" },
178 { "HAVE_CLOCK_GETTIME",
179 DEFINES_FUNC, "HAVE_STRUCT_TIMESPEC", NULL,
180 "#include <time.h>\n"
181 "static struct timespec func(void) {\n"
182 " struct timespec ts;\n"
183 " clock_gettime(CLOCK_REALTIME, &ts);\n"
186 { "HAVE_CLOCK_GETTIME_IN_LIBRT",
188 "HAVE_STRUCT_TIMESPEC !HAVE_CLOCK_GETTIME",
190 "#include <time.h>\n"
191 "static struct timespec func(void) {\n"
192 " struct timespec ts;\n"
193 " clock_gettime(CLOCK_REALTIME, &ts);\n"
196 /* This means HAVE_CLOCK_GETTIME, too */
197 "HAVE_CLOCK_GETTIME" },
198 { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, NULL,
199 "int *foo = (int[]) { 1, 2, 3, 4 };\n"
200 "return foo[0] ? 0 : 1;" },
201 { "HAVE_FCHDIR", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
202 "#include <sys/types.h>\n"
203 "#include <sys/stat.h>\n"
204 "#include <fcntl.h>\n"
205 "#include <unistd.h>\n"
207 " int fd = open(\"..\", O_RDONLY);\n"
208 " return fchdir(fd) == 0 ? 0 : 1;\n"
210 { "HAVE_ERR_H", DEFINES_FUNC, NULL, NULL,
212 "static void func(int arg) {\n"
214 " err(1, \"err %u\", arg);\n"
216 " errx(1, \"err %u\", arg);\n"
218 " warn(\"warn %u\", arg);\n"
220 " warnx(\"warn %u\", arg);\n"
222 { "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
223 "HAVE_32BIT_OFF_T", NULL,
224 "#define _FILE_OFFSET_BITS 64\n"
225 "#include <sys/types.h>\n"
227 " return sizeof(off_t) == 8 ? 0 : 1;\n"
229 { "HAVE_FOR_LOOP_DECLARATION", INSIDE_MAIN, NULL, NULL,
231 "for (int i = 0; i < argc; i++) { ret = 0; };\n"
233 { "HAVE_FLEXIBLE_ARRAY_MEMBER", OUTSIDE_MAIN, NULL, NULL,
234 "struct foo { unsigned int x; int arr[]; };" },
235 { "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL, NULL,
236 "#include <unistd.h>\n"
237 "static int func(void) { return getpagesize(); }" },
238 { "HAVE_ISBLANK", DEFINES_FUNC, NULL, NULL,
239 "#ifndef _GNU_SOURCE\n"
240 "#define _GNU_SOURCE\n"
242 "#include <ctype.h>\n"
243 "static int func(void) { return isblank(' '); }" },
244 { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, NULL,
245 "union { int i; char c[sizeof(int)]; } u;\n"
246 "u.i = 0x01020304;\n"
247 "return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;" },
248 { "HAVE_MEMMEM", DEFINES_FUNC, NULL, NULL,
249 "#ifndef _GNU_SOURCE\n"
250 "#define _GNU_SOURCE\n"
252 "#include <string.h>\n"
253 "static void *func(void *h, size_t hl, void *n, size_t nl) {\n"
254 "return memmem(h, hl, n, nl);"
256 { "HAVE_MEMRCHR", DEFINES_FUNC, NULL, NULL,
257 "#ifndef _GNU_SOURCE\n"
258 "#define _GNU_SOURCE\n"
260 "#include <string.h>\n"
261 "static void *func(void *s, int c, size_t n) {\n"
262 "return memrchr(s, c, n);"
264 { "HAVE_MMAP", DEFINES_FUNC, NULL, NULL,
265 "#include <sys/mman.h>\n"
266 "static void *func(int fd) {\n"
267 " return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
269 { "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
270 "#include <sys/types.h>\n"
271 "#include <sys/stat.h>\n"
272 "#include <fcntl.h>\n"
274 " return open(\"/proc/self/maps\", O_RDONLY) != -1 ? 0 : 1;\n"
276 { "HAVE_QSORT_R_PRIVATE_LAST",
277 DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
278 "#ifndef _GNU_SOURCE\n"
279 "#define _GNU_SOURCE\n"
281 "#include <stdlib.h>\n"
282 "static int cmp(const void *lp, const void *rp, void *priv) {\n"
283 " *(unsigned int *)priv = 1;\n"
284 " return *(const int *)lp - *(const int *)rp; }\n"
286 " int array[] = { 9, 2, 5 };\n"
287 " unsigned int called = 0;\n"
288 " qsort_r(array, 3, sizeof(int), cmp, &called);\n"
289 " return called && array[0] == 2 && array[1] == 5 && array[2] == 9 ? 0 : 1;\n"
291 { "HAVE_STRUCT_TIMESPEC",
292 DEFINES_FUNC, NULL, NULL,
293 "#include <time.h>\n"
294 "static void func(void) {\n"
295 " struct timespec ts;\n"
296 " ts.tv_sec = ts.tv_nsec = 1;\n"
298 { "HAVE_SECTION_START_STOP",
299 DEFINES_FUNC, NULL, NULL,
300 "static void *__attribute__((__section__(\"mysec\"))) p = &p;\n"
301 "static int func(void) {\n"
302 " extern void *__start_mysec[], *__stop_mysec[];\n"
303 " return __stop_mysec - __start_mysec;\n"
305 { "HAVE_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
306 "#include <stddef.h>\n"
307 "static ptrdiff_t nest(const void *base, unsigned int i)\n"
310 " return (const char *)&i - (const char *)base;\n"
311 " return nest(base, i-1);\n"
313 "int main(int argc, char *argv[]) {\n"
315 " return (nest(&argc, argc) > 0) ? 0 : 1;\n"
317 { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL, NULL,
318 "return ({ int x = argc; x == argc ? 0 : 1; });" },
319 { "HAVE_SYS_FILIO_H", OUTSIDE_MAIN, NULL, NULL, /* Solaris needs this for FIONREAD */
320 "#include <sys/filio.h>\n" },
321 { "HAVE_SYS_TERMIOS_H", OUTSIDE_MAIN, NULL, NULL,
322 "#include <sys/termios.h>\n" },
323 { "HAVE_SYS_UNISTD_H", OUTSIDE_MAIN, NULL, NULL,
324 "#include <sys/unistd.h>\n" },
325 { "HAVE_TYPEOF", INSIDE_MAIN, NULL, NULL,
326 "__typeof__(argc) i; i = argc; return i == argc ? 0 : 1;" },
327 { "HAVE_UNALIGNED_ACCESS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
328 "#include <string.h>\n"
329 "int main(int argc, char *argv[]) {\n"
331 " char pad[sizeof(int *) * 1];\n"
332 " strncpy(pad, argv[0], sizeof(pad));\n"
333 " int *x = (int *)pad, *y = (int *)(pad + 1);\n"
334 " return *x == *y;\n"
336 { "HAVE_UTIME", DEFINES_FUNC, NULL, NULL,
337 "#include <sys/types.h>\n"
338 "#include <utime.h>\n"
339 "static int func(const char *filename) {\n"
340 " struct utimbuf times = { 0 };\n"
341 " return utime(filename, ×);\n"
343 { "HAVE_WARN_UNUSED_RESULT", DEFINES_FUNC, NULL, NULL,
344 "#include <sys/types.h>\n"
345 "#include <utime.h>\n"
346 "static __attribute__((warn_unused_result)) int func(int i) {\n"
349 { "HAVE_OPENMP", INSIDE_MAIN, NULL, NULL,
351 "#pragma omp parallel for\n"
352 "for(i = 0; i < 0; i++) {};\n"
354 "-Werror -fopenmp" },
355 { "HAVE_VALGRIND_MEMCHECK_H", OUTSIDE_MAIN, NULL, NULL,
356 "#include <valgrind/memcheck.h>\n" },
357 { "HAVE_UCONTEXT", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
359 "#include <ucontext.h>\n"
360 "static int x = 0;\n"
361 "static char stack[2048];\n"
362 "static ucontext_t a, b;\n"
363 "static void fn(void) {\n"
371 " a.uc_stack.ss_sp = stack;\n"
372 " a.uc_stack.ss_size = sizeof(stack);\n"
373 " makecontext(&a, fn, 0);\n"
374 " swapcontext(&b, &a);\n"
375 " return (x == 3) ? 0 : 1;\n"
378 { "HAVE_POINTER_SAFE_MAKECONTEXT", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
379 "HAVE_UCONTEXT", NULL,
380 "#include <stddef.h>\n"
381 "#include <ucontext.h>\n"
382 "static int worked = 0;\n"
383 "static char stack[1024];\n"
384 "static ucontext_t a, b;\n"
385 "static void fn(void *p, void *q) {\n"
386 " void *cp = &worked;\n"
387 " void *cq = (void *)(~((ptrdiff_t)cp));\n"
388 " if ((p == cp) && (q == cq))\n"
393 " void *ap = &worked;\n"
394 " void *aq = (void *)(~((ptrdiff_t)ap));\n"
396 " a.uc_stack.ss_sp = stack;\n"
397 " a.uc_stack.ss_size = sizeof(stack);\n"
398 " makecontext(&a, (void (*)(void))fn, 2, ap, aq);\n"
399 " swapcontext(&b, &a);\n"
400 " return worked ? 0 : 1;\n"
405 static void c12r_err(int eval, const char *fmt, ...)
407 int err_errno = errno;
410 fprintf(stderr, "%s: ", progname);
412 vfprintf(stderr, fmt, ap);
414 fprintf(stderr, ": %s\n", strerror(err_errno));
418 static void c12r_errx(int eval, const char *fmt, ...)
422 fprintf(stderr, "%s: ", progname);
424 vfprintf(stderr, fmt, ap);
426 fprintf(stderr, "\n");
430 static size_t fcopy(FILE *fsrc, FILE *fdst)
436 while ((rsize = fread(buffer, 1, BUFSIZ, fsrc)) > 0) {
437 wsize = fwrite(buffer, 1, rsize, fdst);
446 static char *grab_stream(FILE *file)
448 size_t max, ret, size = 0;
452 buffer = malloc(max);
453 while ((ret = fread(buffer+size, 1, max - size, file)) == max - size) {
455 buffer = realloc(buffer, max *= 2);
459 c12r_err(1, "reading from command");
464 static char *run(const char *cmd, int *exitstatus)
466 static const char redir[] = " 2>&1";
472 cmdlen = strlen(cmd);
473 cmdredir = malloc(cmdlen + sizeof(redir));
474 memcpy(cmdredir, cmd, cmdlen);
475 memcpy(cmdredir + cmdlen, redir, sizeof(redir));
477 cmdout = popen(cmdredir, "r");
479 c12r_err(1, "popen \"%s\"", cmdredir);
483 ret = grab_stream(cmdout);
484 *exitstatus = pclose(cmdout);
488 static char *connect_args(const char *argv[], const char *outflag,
493 size_t len = strlen(outflag) + strlen(files) + 1;
495 for (i = 1; argv[i]; i++)
496 len += 1 + strlen(argv[i]);
500 for (i = 1; argv[i]; i++) {
501 strcpy(ret + len, argv[i]);
502 len += strlen(argv[i]);
503 if (argv[i+1] || *outflag)
506 strcpy(ret + len, outflag);
507 len += strlen(outflag);
508 strcpy(ret + len, files);
512 static struct test *find_test(const char *name)
516 for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
517 if (strcmp(tests[i].name, name) == 0)
523 #define PRE_BOILERPLATE "/* Test program generated by configurator. */\n"
524 #define MAIN_START_BOILERPLATE \
525 "int main(int argc, char *argv[]) {\n" \
528 #define USE_FUNC_BOILERPLATE "(void)func;\n"
529 #define MAIN_BODY_BOILERPLATE "return 0;\n"
530 #define MAIN_END_BOILERPLATE "}\n"
532 static bool run_test(const char *cmd, struct test *test)
534 char *output, *newcmd;
543 const char *deps = test->depends;
546 /* Space-separated dependencies, could be ! for inverse. */
547 while ((len = strcspn(deps, " ")) != 0) {
548 bool positive = true;
560 if (run_test(cmd, find_test(dep)) != positive) {
561 test->answer = false;
569 deps += strspn(deps, " ");
573 outf = fopen(INPUT_FILE, verbose > 1 ? "w+" : "w");
575 c12r_err(1, "creating %s", INPUT_FILE);
577 fprintf(outf, "%s", PRE_BOILERPLATE);
578 switch (test->style & ~(EXECUTE|MAY_NOT_COMPILE)) {
580 fprintf(outf, "%s", MAIN_START_BOILERPLATE);
581 fprintf(outf, "%s", test->fragment);
582 fprintf(outf, "%s", MAIN_END_BOILERPLATE);
585 fprintf(outf, "%s", test->fragment);
586 fprintf(outf, "%s", MAIN_START_BOILERPLATE);
587 fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
588 fprintf(outf, "%s", MAIN_END_BOILERPLATE);
591 fprintf(outf, "%s", test->fragment);
592 fprintf(outf, "%s", MAIN_START_BOILERPLATE);
593 fprintf(outf, "%s", USE_FUNC_BOILERPLATE);
594 fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
595 fprintf(outf, "%s", MAIN_END_BOILERPLATE);
597 case DEFINES_EVERYTHING:
598 fprintf(outf, "%s", test->fragment);
606 fseek(outf, 0, SEEK_SET);
612 newcmd = strdup(cmd);
615 newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ")
616 + strlen(test->flags) + 1);
618 strcat(newcmd, test->flags);
620 printf("Extra flags line: %s", newcmd);
624 newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ")
625 + strlen(test->link) + 1);
627 strcat(newcmd, test->link);
629 printf("Extra link line: %s", newcmd);
632 output = run(newcmd, &status);
636 if (status != 0 || strstr(output, "warning")) {
638 printf("Compile %s for %s, status %i: %s\n",
639 status ? "fail" : "warning",
640 test->name, status, output);
641 if ((test->style & EXECUTE) && !(test->style & MAY_NOT_COMPILE))
642 c12r_errx(1, "Test for %s did not compile:\n%s",
644 test->answer = false;
647 /* Compile succeeded. */
649 /* We run INSIDE_MAIN tests for sanity checking. */
650 if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
651 output = run("." DIR_SEP OUTPUT_FILE, &status);
652 if (!(test->style & EXECUTE) && status != 0)
653 c12r_errx(1, "Test for %s failed with %i:\n%s",
654 test->name, status, output);
655 if (verbose && status)
656 printf("%s exited %i\n", test->name, status);
659 test->answer = (status == 0);
663 if (test->answer && test->overrides) {
664 struct test *override = find_test(test->overrides);
665 override->done = true;
666 override->answer = true;
671 int main(int argc, const char *argv[])
675 const char *default_args[]
676 = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL };
677 const char *outflag = DEFAULT_OUTPUT_EXE_FLAG;
678 const char *configurator_cc = NULL;
685 if (strcmp(argv[1], "--help") == 0) {
686 printf("Usage: configurator [-v] [-O<outflag>] [--configurator-cc=<compiler-for-tests>] [<compiler> <flags>...]\n"
687 " <compiler> <flags> will have \"<outflag> <outfile> <infile.c>\" appended\n"
688 "Default: %s %s %s\n",
689 DEFAULT_COMPILER, DEFAULT_FLAGS,
690 DEFAULT_OUTPUT_EXE_FLAG);
693 if (strncmp(argv[1], "-O", 2) == 0) {
696 outflag = argv[1] + 2;
699 "%s: option requires an argument -- O\n",
703 } else if (strcmp(argv[1], "-v") == 0) {
707 } else if (strcmp(argv[1], "-vv") == 0) {
711 } else if (strncmp(argv[1], "--configurator-cc=", 18) == 0) {
712 configurator_cc = argv[1] + 18;
725 argv[1] = configurator_cc;
727 cmd = connect_args(argv, outflag, OUTPUT_FILE " " INPUT_FILE);
728 for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
729 run_test(cmd, &tests[i]);
735 printf("/* Generated by CCAN configurator */\n"
736 "#ifndef CCAN_CONFIG_H\n"
737 "#define CCAN_CONFIG_H\n");
738 printf("#ifndef _GNU_SOURCE\n");
739 printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
741 printf("#define CCAN_COMPILER \"%s\"\n", orig_cc);
742 cmd = connect_args(argv + 1, "", "");
743 printf("#define CCAN_CFLAGS \"%s\"\n", cmd);
745 printf("#define CCAN_OUTPUT_EXE_CFLAG \"%s\"\n\n", outflag);
746 /* This one implies "#include <ccan/..." works, eg. for tdb2.h */
747 printf("#define HAVE_CCAN 1\n");
748 for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
749 printf("#define %s %u\n", tests[i].name, tests[i].answer);
750 printf("#endif /* CCAN_CONFIG_H */\n");