/* 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
};
};
static struct test tests[] = {
+ { "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE, 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,
"return __alignof__(double) > 0 ? 0 : 1;" },
{ "HAVE_ASPRINTF", DEFINES_FUNC, NULL,
"static int __attribute__((unused)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL,
"static int __attribute__((used)) func(int x) { return x; }" },
+ { "HAVE_BACKTRACE", DEFINES_FUNC, 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,
"union { int i; char c[sizeof(int)]; } u;\n"
"u.i = 0x01020304;\n"
{ "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL,
"int *foo = (int[]) { 1, 2, 3, 4 };\n"
"return foo[0] ? 0 : 1;" },
+ { "HAVE_FILE_OFFSET_BITS", DEFINES_EVERYTHING|EXECUTE,
+ "HAVE_32BIT_OFF_T",
+ "#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,
"for (int i = 0; i < argc; i++) { return 0; };\n"
"return 1;" },
{ "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL,
"#include <unistd.h>\n"
"static int func(void) { return getpagesize(); }" },
+ { "HAVE_ISBLANK", DEFINES_FUNC, NULL,
+ "#define _GNU_SOURCE\n"
+ "#include <ctype.h>\n"
+ "static int func(void) { return isblank(' '); }" },
{ "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
"union { int i; char c[sizeof(int)]; } u;\n"
"u.i = 0x01020304;\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,
+ "#include <sys/types.h>\n"
+ "#include <sys/stat.h>\n"
+ "#include <sys/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,
+ "#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_SECTION_START_STOP",
+ DEFINES_FUNC, 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,
"static long nest(const void *base, unsigned int i)\n"
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);
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;
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);
+ /* 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