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
41 #define DEFAULT_COMPILER "cc"
42 #define DEFAULT_FLAGS "-g3 -ggdb -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition"
43 #define DEFAULT_OUTPUT_EXE_FLAG "-o"
45 #define OUTPUT_FILE "configurator.out"
46 #define INPUT_FILE "configuratortest.c"
54 static const char *progname = "";
61 DEFINES_EVERYTHING = 0x8,
62 MAY_NOT_COMPILE = 0x10,
68 enum test_style style;
73 const char *overrides; /* On success, force this to '1' */
78 static struct test tests[] = {
79 { "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
80 "#include <sys/types.h>\n"
82 " return sizeof(off_t) == 4 ? 0 : 1;\n"
84 { "HAVE_ALIGNOF", INSIDE_MAIN, NULL, NULL,
85 "return __alignof__(double) > 0 ? 0 : 1;" },
86 { "HAVE_ASPRINTF", DEFINES_FUNC, NULL, NULL,
87 "#ifndef _GNU_SOURCE\n"
88 "#define _GNU_SOURCE\n"
90 "#include <stdio.h>\n"
91 "static char *func(int x) {"
93 " if (asprintf(&p, \"%u\", x) == -1) p = NULL;"
96 { "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL, NULL,
97 "static int __attribute__((cold)) func(int x) { return x; }" },
98 { "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL, NULL,
99 "static int __attribute__((const)) func(int x) { return x; }" },
100 { "HAVE_ATTRIBUTE_PURE", DEFINES_FUNC, NULL, NULL,
101 "static int __attribute__((pure)) func(int x) { return x; }" },
102 { "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL, NULL,
103 "typedef short __attribute__((__may_alias__)) short_a;" },
104 { "HAVE_ATTRIBUTE_NORETURN", DEFINES_FUNC, NULL, NULL,
105 "#include <stdlib.h>\n"
106 "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
107 { "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL, NULL,
108 "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { (void)fmt; }" },
109 { "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, NULL,
110 "static int __attribute__((unused)) func(int x) { return x; }" },
111 { "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL, NULL,
112 "static int __attribute__((used)) func(int x) { return x; }" },
113 { "HAVE_BACKTRACE", DEFINES_FUNC, NULL, NULL,
114 "#include <execinfo.h>\n"
115 "static int func(int x) {"
117 " return backtrace(bt, 10) < x;\n"
119 { "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, NULL,
120 "union { int i; char c[sizeof(int)]; } u;\n"
121 "u.i = 0x01020304;\n"
122 "return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;" },
123 { "HAVE_BSWAP_64", DEFINES_FUNC, "HAVE_BYTESWAP_H", NULL,
124 "#include <byteswap.h>\n"
125 "static int func(int x) { return bswap_64(x); }" },
126 { "HAVE_BUILTIN_CHOOSE_EXPR", INSIDE_MAIN, NULL, NULL,
127 "return __builtin_choose_expr(1, 0, \"garbage\");" },
128 { "HAVE_BUILTIN_CLZ", INSIDE_MAIN, NULL, NULL,
129 "return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;" },
130 { "HAVE_BUILTIN_CLZL", INSIDE_MAIN, NULL, NULL,
131 "return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;" },
132 { "HAVE_BUILTIN_CLZLL", INSIDE_MAIN, NULL, NULL,
133 "return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
134 { "HAVE_BUILTIN_CTZ", INSIDE_MAIN, NULL, NULL,
135 "return __builtin_ctz(1 << (sizeof(int)*8 - 1)) == (sizeof(int)*8 - 1) ? 0 : 1;" },
136 { "HAVE_BUILTIN_CTZL", INSIDE_MAIN, NULL, NULL,
137 "return __builtin_ctzl(1UL << (sizeof(long)*8 - 1)) == (sizeof(long)*8 - 1) ? 0 : 1;" },
138 { "HAVE_BUILTIN_CTZLL", INSIDE_MAIN, NULL, NULL,
139 "return __builtin_ctzll(1ULL << (sizeof(long long)*8 - 1)) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
140 { "HAVE_BUILTIN_CONSTANT_P", INSIDE_MAIN, NULL, NULL,
141 "return __builtin_constant_p(1) ? 0 : 1;" },
142 { "HAVE_BUILTIN_EXPECT", INSIDE_MAIN, NULL, NULL,
143 "return __builtin_expect(argc == 1, 1) ? 0 : 1;" },
144 { "HAVE_BUILTIN_FFS", INSIDE_MAIN, NULL, NULL,
145 "return __builtin_ffs(0) == 0 ? 0 : 1;" },
146 { "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL, NULL,
147 "return __builtin_ffsl(0L) == 0 ? 0 : 1;" },
148 { "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL, NULL,
149 "return __builtin_ffsll(0LL) == 0 ? 0 : 1;" },
150 { "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL, NULL,
151 "return __builtin_popcountl(255L) == 8 ? 0 : 1;" },
152 { "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL, NULL,
153 "return __builtin_types_compatible_p(char *, int) ? 1 : 0;" },
154 { "HAVE_ICCARM_INTRINSICS", DEFINES_FUNC, NULL, NULL,
155 "#include <intrinsics.h>\n"
156 "int func(int v) {\n"
157 " return __CLZ(__RBIT(v));\n"
159 { "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL, NULL,
160 "#include <byteswap.h>\n" },
161 { "HAVE_CLOCK_GETTIME",
162 DEFINES_FUNC, "HAVE_STRUCT_TIMESPEC", NULL,
163 "#include <time.h>\n"
164 "static struct timespec func(void) {\n"
165 " struct timespec ts;\n"
166 " clock_gettime(CLOCK_REALTIME, &ts);\n"
169 { "HAVE_CLOCK_GETTIME_IN_LIBRT",
171 "HAVE_STRUCT_TIMESPEC !HAVE_CLOCK_GETTIME",
173 "#include <time.h>\n"
174 "static struct timespec func(void) {\n"
175 " struct timespec ts;\n"
176 " clock_gettime(CLOCK_REALTIME, &ts);\n"
179 /* This means HAVE_CLOCK_GETTIME, too */
180 "HAVE_CLOCK_GETTIME" },
181 { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, NULL,
182 "int *foo = (int[]) { 1, 2, 3, 4 };\n"
183 "return foo[0] ? 0 : 1;" },
184 { "HAVE_FCHDIR", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
185 "#include <sys/types.h>\n"
186 "#include <sys/stat.h>\n"
187 "#include <fcntl.h>\n"
188 "#include <unistd.h>\n"
190 " int fd = open(\"..\", O_RDONLY);\n"
191 " return fchdir(fd) == 0 ? 0 : 1;\n"
193 { "HAVE_ERR_H", DEFINES_FUNC, NULL, NULL,
195 "static void func(int arg) {\n"
197 " err(1, \"err %u\", arg);\n"
199 " errx(1, \"err %u\", arg);\n"
201 " warn(\"warn %u\", arg);\n"
203 " warnx(\"warn %u\", arg);\n"
205 { "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
206 "HAVE_32BIT_OFF_T", NULL,
207 "#define _FILE_OFFSET_BITS 64\n"
208 "#include <sys/types.h>\n"
210 " return sizeof(off_t) == 8 ? 0 : 1;\n"
212 { "HAVE_FOR_LOOP_DECLARATION", INSIDE_MAIN, NULL, NULL,
214 "for (int i = 0; i < argc; i++) { ret = 0; };\n"
216 { "HAVE_FLEXIBLE_ARRAY_MEMBER", OUTSIDE_MAIN, NULL, NULL,
217 "struct foo { unsigned int x; int arr[]; };" },
218 { "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL, NULL,
219 "#include <unistd.h>\n"
220 "static int func(void) { return getpagesize(); }" },
221 { "HAVE_ISBLANK", DEFINES_FUNC, NULL, NULL,
222 "#ifndef _GNU_SOURCE\n"
223 "#define _GNU_SOURCE\n"
225 "#include <ctype.h>\n"
226 "static int func(void) { return isblank(' '); }" },
227 { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, NULL,
228 "union { int i; char c[sizeof(int)]; } u;\n"
229 "u.i = 0x01020304;\n"
230 "return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;" },
231 { "HAVE_MEMMEM", DEFINES_FUNC, NULL, NULL,
232 "#ifndef _GNU_SOURCE\n"
233 "#define _GNU_SOURCE\n"
235 "#include <string.h>\n"
236 "static void *func(void *h, size_t hl, void *n, size_t nl) {\n"
237 "return memmem(h, hl, n, nl);"
239 { "HAVE_MEMRCHR", DEFINES_FUNC, NULL, NULL,
240 "#ifndef _GNU_SOURCE\n"
241 "#define _GNU_SOURCE\n"
243 "#include <string.h>\n"
244 "static void *func(void *s, int c, size_t n) {\n"
245 "return memrchr(s, c, n);"
247 { "HAVE_MMAP", DEFINES_FUNC, NULL, NULL,
248 "#include <sys/mman.h>\n"
249 "static void *func(int fd) {\n"
250 " return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
252 { "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
253 "#include <sys/types.h>\n"
254 "#include <sys/stat.h>\n"
255 "#include <fcntl.h>\n"
257 " return open(\"/proc/self/maps\", O_RDONLY) != -1 ? 0 : 1;\n"
259 { "HAVE_QSORT_R_PRIVATE_LAST",
260 DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL, NULL,
261 "#ifndef _GNU_SOURCE\n"
262 "#define _GNU_SOURCE\n"
264 "#include <stdlib.h>\n"
265 "static int cmp(const void *lp, const void *rp, void *priv) {\n"
266 " *(unsigned int *)priv = 1;\n"
267 " return *(const int *)lp - *(const int *)rp; }\n"
269 " int array[] = { 9, 2, 5 };\n"
270 " unsigned int called = 0;\n"
271 " qsort_r(array, 3, sizeof(int), cmp, &called);\n"
272 " return called && array[0] == 2 && array[1] == 5 && array[2] == 9 ? 0 : 1;\n"
274 { "HAVE_STRUCT_TIMESPEC",
275 DEFINES_FUNC, NULL, NULL,
276 "#include <time.h>\n"
277 "static void func(void) {\n"
278 " struct timespec ts;\n"
279 " ts.tv_sec = ts.tv_nsec = 1;\n"
281 { "HAVE_SECTION_START_STOP",
282 DEFINES_FUNC, NULL, NULL,
283 "static void *__attribute__((__section__(\"mysec\"))) p = &p;\n"
284 "static int func(void) {\n"
285 " extern void *__start_mysec[], *__stop_mysec[];\n"
286 " return __stop_mysec - __start_mysec;\n"
288 { "HAVE_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
289 "#include <stddef.h>\n"
290 "static ptrdiff_t nest(const void *base, unsigned int i)\n"
293 " return (const char *)&i - (const char *)base;\n"
294 " return nest(base, i-1);\n"
296 "int main(int argc, char *argv[]) {\n"
298 " return (nest(&argc, argc) > 0) ? 0 : 1;\n"
300 { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL, NULL,
301 "return ({ int x = argc; x == argc ? 0 : 1; });" },
302 { "HAVE_SYS_FILIO_H", OUTSIDE_MAIN, NULL, NULL, /* Solaris needs this for FIONREAD */
303 "#include <sys/filio.h>\n" },
304 { "HAVE_SYS_TERMIOS_H", OUTSIDE_MAIN, NULL, NULL,
305 "#include <sys/termios.h>\n" },
306 { "HAVE_TYPEOF", INSIDE_MAIN, NULL, NULL,
307 "__typeof__(argc) i; i = argc; return i == argc ? 0 : 1;" },
308 { "HAVE_UNALIGNED_ACCESS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
309 "#include <string.h>\n"
310 "int main(int argc, char *argv[]) {\n"
312 " char pad[sizeof(int *) * 1];\n"
313 " strncpy(pad, argv[0], sizeof(pad));\n"
314 " int *x = (int *)pad, *y = (int *)(pad + 1);\n"
315 " return *x == *y;\n"
317 { "HAVE_UTIME", DEFINES_FUNC, NULL, NULL,
318 "#include <sys/types.h>\n"
319 "#include <utime.h>\n"
320 "static int func(const char *filename) {\n"
321 " struct utimbuf times = { 0 };\n"
322 " return utime(filename, ×);\n"
324 { "HAVE_WARN_UNUSED_RESULT", DEFINES_FUNC, NULL, NULL,
325 "#include <sys/types.h>\n"
326 "#include <utime.h>\n"
327 "static __attribute__((warn_unused_result)) int func(int i) {\n"
330 { "HAVE_OPENMP", INSIDE_MAIN, NULL, NULL,
332 "#pragma omp parallel for\n"
333 "for(i = 0; i < 0; i++) {};\n"
335 "-Werror -fopenmp" },
336 { "HAVE_VALGRIND_MEMCHECK_H", OUTSIDE_MAIN, NULL, NULL,
337 "#include <valgrind/memcheck.h>\n" },
338 { "HAVE_UCONTEXT", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
340 "#include <ucontext.h>\n"
341 "static int x = 0;\n"
342 "static char stack[2048];\n"
343 "static ucontext_t a, b;\n"
344 "static void fn(void) {\n"
352 " a.uc_stack.ss_sp = stack;\n"
353 " a.uc_stack.ss_size = sizeof(stack);\n"
354 " makecontext(&a, fn, 0);\n"
355 " swapcontext(&b, &a);\n"
356 " return (x == 3) ? 0 : 1;\n"
359 { "HAVE_POINTER_SAFE_MAKECONTEXT", DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE,
360 "HAVE_UCONTEXT", NULL,
361 "#include <stddef.h>\n"
362 "#include <ucontext.h>\n"
363 "static int worked = 0;\n"
364 "static char stack[1024];\n"
365 "static ucontext_t a, b;\n"
366 "static void fn(void *p, void *q) {\n"
367 " void *cp = &worked;\n"
368 " void *cq = (void *)(~((ptrdiff_t)cp));\n"
369 " if ((p == cp) && (q == cq))\n"
374 " void *ap = &worked;\n"
375 " void *aq = (void *)(~((ptrdiff_t)ap));\n"
377 " a.uc_stack.ss_sp = stack;\n"
378 " a.uc_stack.ss_size = sizeof(stack);\n"
379 " makecontext(&a, (void (*)(void))fn, 2, ap, aq);\n"
380 " swapcontext(&b, &a);\n"
381 " return worked ? 0 : 1;\n"
386 static void c12r_err(int eval, const char *fmt, ...)
388 int err_errno = errno;
391 fprintf(stderr, "%s: ", progname);
393 vfprintf(stderr, fmt, ap);
395 fprintf(stderr, ": %s\n", strerror(err_errno));
399 static void c12r_errx(int eval, const char *fmt, ...)
403 fprintf(stderr, "%s: ", progname);
405 vfprintf(stderr, fmt, ap);
407 fprintf(stderr, "\n");
411 static size_t fcopy(FILE *fsrc, FILE *fdst)
417 while ((rsize = fread(buffer, 1, BUFSIZ, fsrc)) > 0) {
418 wsize = fwrite(buffer, 1, rsize, fdst);
427 static char *grab_stream(FILE *file)
429 size_t max, ret, size = 0;
433 buffer = malloc(max);
434 while ((ret = fread(buffer+size, 1, max - size, file)) == max - size) {
436 buffer = realloc(buffer, max *= 2);
440 c12r_err(1, "reading from command");
445 static char *run(const char *cmd, int *exitstatus)
447 static const char redir[] = " 2>&1";
453 cmdlen = strlen(cmd);
454 cmdredir = malloc(cmdlen + sizeof(redir));
455 memcpy(cmdredir, cmd, cmdlen);
456 memcpy(cmdredir + cmdlen, redir, sizeof(redir));
458 cmdout = popen(cmdredir, "r");
460 c12r_err(1, "popen \"%s\"", cmdredir);
464 ret = grab_stream(cmdout);
465 *exitstatus = pclose(cmdout);
469 static char *connect_args(const char *argv[], const char *outflag,
474 size_t len = strlen(outflag) + strlen(files) + 1;
476 for (i = 1; argv[i]; i++)
477 len += 1 + strlen(argv[i]);
481 for (i = 1; argv[i]; i++) {
482 strcpy(ret + len, argv[i]);
483 len += strlen(argv[i]);
484 if (argv[i+1] || *outflag)
487 strcpy(ret + len, outflag);
488 len += strlen(outflag);
489 strcpy(ret + len, files);
493 static struct test *find_test(const char *name)
497 for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
498 if (strcmp(tests[i].name, name) == 0)
504 #define PRE_BOILERPLATE "/* Test program generated by configurator. */\n"
505 #define MAIN_START_BOILERPLATE \
506 "int main(int argc, char *argv[]) {\n" \
509 #define USE_FUNC_BOILERPLATE "(void)func;\n"
510 #define MAIN_BODY_BOILERPLATE "return 0;\n"
511 #define MAIN_END_BOILERPLATE "}\n"
513 static bool run_test(const char *cmd, struct test *test)
515 char *output, *newcmd;
524 const char *deps = test->depends;
527 /* Space-separated dependencies, could be ! for inverse. */
528 while ((len = strcspn(deps, " ")) != 0) {
529 bool positive = true;
541 if (run_test(cmd, find_test(dep)) != positive) {
542 test->answer = false;
550 deps += strspn(deps, " ");
554 outf = fopen(INPUT_FILE, verbose > 1 ? "w+" : "w");
556 c12r_err(1, "creating %s", INPUT_FILE);
558 fprintf(outf, "%s", PRE_BOILERPLATE);
559 switch (test->style & ~(EXECUTE|MAY_NOT_COMPILE)) {
561 fprintf(outf, "%s", MAIN_START_BOILERPLATE);
562 fprintf(outf, "%s", test->fragment);
563 fprintf(outf, "%s", MAIN_END_BOILERPLATE);
566 fprintf(outf, "%s", test->fragment);
567 fprintf(outf, "%s", MAIN_START_BOILERPLATE);
568 fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
569 fprintf(outf, "%s", MAIN_END_BOILERPLATE);
572 fprintf(outf, "%s", test->fragment);
573 fprintf(outf, "%s", MAIN_START_BOILERPLATE);
574 fprintf(outf, "%s", USE_FUNC_BOILERPLATE);
575 fprintf(outf, "%s", MAIN_BODY_BOILERPLATE);
576 fprintf(outf, "%s", MAIN_END_BOILERPLATE);
578 case DEFINES_EVERYTHING:
579 fprintf(outf, "%s", test->fragment);
587 fseek(outf, 0, SEEK_SET);
593 newcmd = strdup(cmd);
596 newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ")
597 + strlen(test->flags) + 1);
599 strcat(newcmd, test->flags);
601 printf("Extra flags line: %s", newcmd);
605 newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ")
606 + strlen(test->link) + 1);
608 strcat(newcmd, test->link);
610 printf("Extra link line: %s", newcmd);
613 output = run(newcmd, &status);
617 if (status != 0 || strstr(output, "warning")) {
619 printf("Compile %s for %s, status %i: %s\n",
620 status ? "fail" : "warning",
621 test->name, status, output);
622 if ((test->style & EXECUTE) && !(test->style & MAY_NOT_COMPILE))
623 c12r_errx(1, "Test for %s did not compile:\n%s",
625 test->answer = false;
628 /* Compile succeeded. */
630 /* We run INSIDE_MAIN tests for sanity checking. */
631 if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
632 output = run("." DIR_SEP OUTPUT_FILE, &status);
633 if (!(test->style & EXECUTE) && status != 0)
634 c12r_errx(1, "Test for %s failed with %i:\n%s",
635 test->name, status, output);
636 if (verbose && status)
637 printf("%s exited %i\n", test->name, status);
640 test->answer = (status == 0);
644 if (test->answer && test->overrides) {
645 struct test *override = find_test(test->overrides);
646 override->done = true;
647 override->answer = true;
652 int main(int argc, const char *argv[])
656 const char *default_args[]
657 = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL };
658 const char *outflag = DEFAULT_OUTPUT_EXE_FLAG;
664 if (strcmp(argv[1], "--help") == 0) {
665 printf("Usage: configurator [-v] [-O<outflag>] [<compiler> <flags>...]\n"
666 " <compiler> <flags> will have \"<outflag> <outfile> <infile.c>\" appended\n"
667 "Default: %s %s %s\n",
668 DEFAULT_COMPILER, DEFAULT_FLAGS,
669 DEFAULT_OUTPUT_EXE_FLAG);
672 if (strncmp(argv[1], "-O", 2) == 0) {
675 outflag = argv[1] + 2;
678 "%s: option requires an argument -- O\n",
682 } else if (strcmp(argv[1], "-v") == 0) {
686 } else if (strcmp(argv[1], "-vv") == 0) {
698 cmd = connect_args(argv, outflag, OUTPUT_FILE " " INPUT_FILE);
699 for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
700 run_test(cmd, &tests[i]);
706 printf("/* Generated by CCAN configurator */\n"
707 "#ifndef CCAN_CONFIG_H\n"
708 "#define CCAN_CONFIG_H\n");
709 printf("#ifndef _GNU_SOURCE\n");
710 printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
712 printf("#define CCAN_COMPILER \"%s\"\n", argv[1]);
713 cmd = connect_args(argv + 1, "", "");
714 printf("#define CCAN_CFLAGS \"%s\"\n", cmd);
716 printf("#define CCAN_OUTPUT_EXE_CFLAG \"%s\"\n\n", outflag);
717 /* This one implies "#include <ccan/..." works, eg. for tdb2.h */
718 printf("#define HAVE_CCAN 1\n");
719 for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
720 printf("#define %s %u\n", tests[i].name, tests[i].answer);
721 printf("#endif /* CCAN_CONFIG_H */\n");