X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=tools%2Fconfigurator%2Fconfigurator.c;h=6fa88e5b071fa6d80faf1fb4cfdeca8565e77b55;hp=b150dadb56d99f9e21bb4702b1f9af0e3e943bb6;hb=48c1824304ac2d8aeaef7b8a55c7d9edc8992f63;hpb=62bbea8e5feea7b716c7bc8b41444080a24abc95 diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c index b150dadb..6fa88e5b 100644 --- a/tools/configurator/configurator.c +++ b/tools/configurator/configurator.c @@ -1,5 +1,26 @@ /* 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 . 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 #include #include @@ -12,7 +33,7 @@ #include #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" @@ -20,107 +41,228 @@ static int verbose; enum test_style { - EXECUTE, - OUTSIDE_MAIN, - DEFINES_FUNC, - INSIDE_MAIN + OUTSIDE_MAIN = 0x1, + DEFINES_FUNC = 0x2, + INSIDE_MAIN = 0x4, + DEFINES_EVERYTHING = 0x8, + MAY_NOT_COMPILE = 0x10, + EXECUTE = 0x8000 }; struct test { 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 \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_ATTRIBUTE_COLD", DEFINES_FUNC, NULL, + { "HAVE_ASPRINTF", DEFINES_FUNC, NULL, NULL, + "#define _GNU_SOURCE\n" + "#include \n" + "static char *func(int x) {" + " char *p;\n" + " if (asprintf(&p, \"%u\", x) == -1) p = NULL;" + " return p;\n" + "}" }, + { "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 \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", EXECUTE, NULL, + { "HAVE_BACKTRACE", DEFINES_FUNC, NULL, NULL, + "#include \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 \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 \n" }, - { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, - "char **foo = (char *[]) { \"x\", \"y\", \"z\" };\n" + { "HAVE_CLOCK_GETTIME", + DEFINES_FUNC, "HAVE_STRUCT_TIMESPEC", NULL, + "#include \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 \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 \n" + "#include \n" + "#include \n" + "#include \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 \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 \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 \n" "static int func(void) { return getpagesize(); }" }, - { "HAVE_LITTLE_ENDIAN", EXECUTE, NULL, + { "HAVE_ISBLANK", DEFINES_FUNC, NULL, NULL, + "#define _GNU_SOURCE\n" + "#include \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_MMAP", DEFINES_FUNC, NULL, + { "HAVE_MEMMEM", DEFINES_FUNC, NULL, NULL, + "#define _GNU_SOURCE\n" + "#include \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, NULL, "#include \n" "static void *func(int fd) {\n" " return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n" "}" }, - { "HAVE_NESTED_FUNCTIONS", DEFINES_FUNC, NULL, - "static int func(int val) {\n" - " auto void add(int val2);\n" - " void add(int val2) { val += val2; }\n" - " add(7);\n" - " return val;\n" - "}" }, - { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL, + { "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL, + "#include \n" + "#include \n" + "#include \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 \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 \n" + "static void func(void) {\n" + " struct timespec ts;\n" + " ts.tv_sec = ts.tv_nsec = 1;\n" + "}\n" }, + { "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" + " 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;" + "}\n" }, + { "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 \n" }, + { "HAVE_SYS_TERMIOS_H", OUTSIDE_MAIN, NULL, NULL, + "#include \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 \n" "#include \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 \n" "#include \n" "static __attribute__((warn_unused_result)) int func(int i) {\n" @@ -189,7 +331,7 @@ static char *run(const char *cmd, int *exitstatus) return ret; } -static char *connect_args(char *argv[], const char *extra) +static char *connect_args(const char *argv[], const char *extra) { unsigned int i, len = strlen(extra) + 1; char *ret; @@ -202,7 +344,8 @@ static char *connect_args(char *argv[], const char *extra) 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; @@ -234,10 +377,33 @@ static bool run_test(const char *cmd, struct test *test) 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"); @@ -245,8 +411,7 @@ static bool run_test(const char *cmd, struct test *test) err(1, "creating %s", INPUT_FILE); fprintf(outf, "%s", PRE_BOILERPLATE); - switch (test->style) { - case EXECUTE: + switch (test->style & ~(EXECUTE|MAY_NOT_COMPILE)) { case INSIDE_MAIN: fprintf(outf, "%s", MAIN_START_BOILERPLATE); fprintf(outf, "%s", test->fragment); @@ -265,19 +430,35 @@ static bool run_test(const char *cmd, struct test *test) fprintf(outf, "%s", MAIN_BODY_BOILERPLATE); fprintf(outf, "%s", MAIN_END_BOILERPLATE); break; + case DEFINES_EVERYTHING: + fprintf(outf, "%s", test->fragment); + break; + default: + abort(); + } fclose(outf); 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; @@ -286,9 +467,9 @@ static bool run_test(const char *cmd, struct test *test) /* Compile succeeded. */ free(output); /* We run INSIDE_MAIN tests for sanity checking. */ - if (test->style == EXECUTE || test->style == INSIDE_MAIN) { + if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) { output = run("./" OUTPUT_FILE, &status); - if (test->style == INSIDE_MAIN && status != 0) + if (!(test->style & EXECUTE) && status != 0) errx(1, "Test for %s failed with %i:\n%s", test->name, status, output); if (verbose && status) @@ -301,11 +482,12 @@ static bool run_test(const char *cmd, struct test *test) return test->answer; } -int main(int argc, char *argv[]) +int main(int argc, const char *argv[]) { char *cmd; - char *default_args[] = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL }; unsigned int i; + const char *default_args[] + = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL }; if (argc > 1) { if (strcmp(argv[1], "--help") == 0) { @@ -329,19 +511,23 @@ int main(int argc, char *argv[]) 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("#ifndef CCAN_CONFIG_H\n" - "#define CCAN_CONFIG_H\n" - "/* Generated by CCAN configurator */\n"); + 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