/* Simple tool to create config.h.
- * Would be much easier with ccan modules, but deliberately standalone. */
+ * 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 <string.h>
#define DEFAULT_COMPILER "cc"
-#define DEFAULT_FLAGS "-g -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition"
+#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"
DEFINES_FUNC = 0x2,
INSIDE_MAIN = 0x4,
DEFINES_EVERYTHING = 0x8,
+ MAY_NOT_COMPILE = 0x10,
EXECUTE = 0x8000
};
const char *name;
enum test_style style;
const char *depends;
+ const char *link;
const char *fragment;
bool done;
bool answer;
};
static struct test tests[] = {
- { "HAVE_ALIGNOF", INSIDE_MAIN, NULL,
+ { "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,
+ { "HAVE_ASPRINTF", DEFINES_FUNC, NULL, NULL,
"#define _GNU_SOURCE\n"
"#include <stdio.h>\n"
"static char *func(int x) {"
" if (asprintf(&p, \"%u\", x) == -1) p = NULL;"
" return p;\n"
"}" },
- { "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL,
+ { "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL, NULL,
"static int __attribute__((cold)) func(int x) { return x; }" },
- { "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL,
+ { "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL, NULL,
"static int __attribute__((const)) func(int x) { return x; }" },
- { "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL,
+ { "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,
+ { "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,
+ { "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL, NULL,
"static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }" },
- { "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL,
+ { "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, NULL,
"static int __attribute__((unused)) func(int x) { return x; }" },
- { "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL,
+ { "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL, NULL,
"static int __attribute__((used)) func(int x) { return x; }" },
- { "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
+ { "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",
+ { "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,
+ { "HAVE_BUILTIN_CHOOSE_EXPR", INSIDE_MAIN, NULL, NULL,
"return __builtin_choose_expr(1, 0, \"garbage\");" },
- { "HAVE_BUILTIN_CLZ", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_CLZ", INSIDE_MAIN, NULL, NULL,
"return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;" },
- { "HAVE_BUILTIN_CLZL", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_CLZL", INSIDE_MAIN, NULL, NULL,
"return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;" },
- { "HAVE_BUILTIN_CLZLL", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_CLZLL", INSIDE_MAIN, NULL, NULL,
"return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
- { "HAVE_BUILTIN_CONSTANT_P", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_CONSTANT_P", INSIDE_MAIN, NULL, NULL,
"return __builtin_constant_p(1) ? 0 : 1;" },
- { "HAVE_BUILTIN_EXPECT", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_EXPECT", INSIDE_MAIN, NULL, NULL,
"return __builtin_expect(argc == 1, 1) ? 0 : 1;" },
- { "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL, NULL,
"return __builtin_ffsl(0L) == 0 ? 0 : 1;" },
- { "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL, NULL,
"return __builtin_ffsll(0LL) == 0 ? 0 : 1;" },
- { "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL, NULL,
"return __builtin_popcountl(255L) == 8 ? 0 : 1;" },
- { "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL,
+ { "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL, NULL,
"return __builtin_types_compatible_p(char *, int) ? 1 : 0;" },
- { "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL,
+ { "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL, NULL,
"#include <byteswap.h>\n" },
- { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL,
+ { "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" },
+ { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, NULL,
"int *foo = (int[]) { 1, 2, 3, 4 };\n"
"return foo[0] ? 0 : 1;" },
- { "HAVE_FOR_LOOP_DECLARATION", INSIDE_MAIN, NULL,
+ { "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,
+ { "HAVE_FLEXIBLE_ARRAY_MEMBER", OUTSIDE_MAIN, NULL, NULL,
"struct foo { unsigned int x; int arr[]; };" },
- { "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL,
+ { "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL, NULL,
"#include <unistd.h>\n"
"static int func(void) { return getpagesize(); }" },
- { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
+ { "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,
+ { "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_MMAP", DEFINES_FUNC, NULL,
+ { "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_NESTED_FUNCTIONS", DEFINES_FUNC, NULL,
- "void (*func(int val))(int);\n"
- "void (*func(int val))(int) {\n"
- " auto void add(int val2);\n"
- " void add(int val2) { val += val2; }\n"
- " return add;\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_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL,
+ { "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"
"int main(int argc, char *argv[]) {\n"
" return (nest(&argc, argc) > 0) ? 0 : 1\n;"
"}\n" },
- { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL,
+ { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL, NULL,
"return ({ int x = argc; x == argc ? 0 : 1; });" },
- { "HAVE_TYPEOF", INSIDE_MAIN, NULL,
+ { "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_UTIME", DEFINES_FUNC, NULL,
+ { "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, ×);\n"
"}" },
- { "HAVE_WARN_UNUSED_RESULT", DEFINES_FUNC, NULL,
+ { "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"
for (i = 1; argv[i]; i++) {
strcpy(ret + len, argv[i]);
len += strlen(argv[i]);
- ret[len++] = ' ';
+ if (argv[i+1])
+ ret[len++] = ' ';
}
strcpy(ret + len, extra);
return ret;
if (test->done)
return test->answer;
- if (test->depends && !run_test(cmd, find_test(test->depends))) {
- test->answer = false;
- test->done = true;
- 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");
err(1, "creating %s", INPUT_FILE);
fprintf(outf, "%s", PRE_BOILERPLATE);
- switch (test->style & ~EXECUTE) {
+ switch (test->style & ~(EXECUTE|MAY_NOT_COMPILE)) {
case INSIDE_MAIN:
fprintf(outf, "%s", MAIN_START_BOILERPLATE);
fprintf(outf, "%s", test->fragment);
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)
+ 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;
if (argc == 1)
argv = default_args;
- cmd = connect_args(argv, "-o " OUTPUT_FILE " " INPUT_FILE);
+ 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);
- cmd[strlen(cmd) - strlen(" -o " OUTPUT_FILE " " INPUT_FILE)] = '\0';
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", cmd + strlen(argv[1]) + 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");
projects / ccan / blobdiff