X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=tools%2Fconfigurator%2Fconfigurator.c;h=874ec12ad7c91fb2eb047374e7e7eeeda10f5fe5;hp=812b1b0316ff22632f71d9fde074e19183cfdf8b;hb=e882122346f7bfc8a5769d06c394c893867290ab;hpb=aee1d4983ef20bc1ecd5485f99951a9db6a5da0e diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c index 812b1b03..874ec12a 100644 --- a/tools/configurator/configurator.c +++ b/tools/configurator/configurator.c @@ -3,6 +3,9 @@ * * Copyright 2011 Rusty Russell . MIT license. * + * c12r_err, c12r_errx functions copied from ccan/err/err.c + * Copyright Rusty Russell . CC0 (Public domain) 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 @@ -21,156 +24,321 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ +#define _POSIX_C_SOURCE 200809L /* For pclose, popen, strdup */ + +#include #include +#include #include #include -#include -#include -#include -#include -#include -#include #include +#include + +#ifdef _MSC_VER +#define popen _popen +#define pclose _pclose +#endif +#ifdef _MSC_VER +#define DEFAULT_COMPILER "cl" +/* Note: Dash options avoid POSIX path conversion when used under msys bash + * and are therefore preferred to slash (e.g. -nologo over /nologo) + * Note: Disable Warning 4200 "nonstandard extension used : zero-sized array + * in struct/union" for flexible array members. + */ +#define DEFAULT_FLAGS "-nologo -Zi -W4 -wd4200 " \ + "-D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS" +#define DEFAULT_OUTPUT_EXE_FLAG "-Fe:" +#else #define DEFAULT_COMPILER "cc" #define DEFAULT_FLAGS "-g3 -ggdb -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition" +#define DEFAULT_OUTPUT_EXE_FLAG "-o" +#endif #define OUTPUT_FILE "configurator.out" #define INPUT_FILE "configuratortest.c" -static int verbose; +#ifdef _WIN32 +#define DIR_SEP "\\" +#else +#define DIR_SEP "/" +#endif -enum test_style { - OUTSIDE_MAIN = 0x1, - DEFINES_FUNC = 0x2, - INSIDE_MAIN = 0x4, - DEFINES_EVERYTHING = 0x8, - MAY_NOT_COMPILE = 0x10, - EXECUTE = 0x8000 -}; +static const char *progname = ""; +static int verbose; +static bool like_a_libtool = false; struct test { const char *name; - enum test_style style; + const char *desc; + /* + * Template style flags (pick one): + * OUTSIDE_MAIN: + * - put a simple boilerplate main below it. + * DEFINES_FUNC: + * - defines a static function called func; adds ref to avoid warnings + * INSIDE_MAIN: + * - put this inside main(). + * DEFINES_EVERYTHING: + * - don't add any boilerplate at all. + * + * Execution flags: + * EXECUTE: + * - a runtime test; must compile, exit 0 means flag is set. + * MAY_NOT_COMPILE: + * - Only useful with EXECUTE: don't get upset if it doesn't compile. + * : + * - a compile test, if it compiles must run and exit 0. + */ + const char *style; const char *depends; + const char *link; const char *fragment; + const char *flags; + const char *overrides; /* On success, force this to '1' */ bool done; bool answer; }; -static struct test tests[] = { - { "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE, NULL, +/* Terminated by a NULL name */ +static struct test *tests; + +static const struct test base_tests[] = { + { "HAVE_32BIT_OFF_T", "off_t is 32 bits", + "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", NULL, NULL, "#include \n" - "int main(int argc, char *argv[]) {\n" + "int main(void) {\n" " return sizeof(off_t) == 4 ? 0 : 1;\n" "}\n" }, - { "HAVE_ALIGNOF", INSIDE_MAIN, NULL, + { "HAVE_ALIGNOF", "__alignof__ support", + "INSIDE_MAIN", NULL, NULL, "return __alignof__(double) > 0 ? 0 : 1;" }, - { "HAVE_ASPRINTF", DEFINES_FUNC, NULL, + { "HAVE_ASPRINTF", "asprintf() declaration", + "DEFINES_FUNC", NULL, NULL, + "#ifndef _GNU_SOURCE\n" "#define _GNU_SOURCE\n" + "#endif\n" "#include \n" "static char *func(int x) {" " char *p;\n" - " if (asprintf(&p, \"%u\", x) == -1) p = NULL;" + " if (asprintf(&p, \"%u\", x) == -1) \n" + " p = NULL;\n" " return p;\n" "}" }, - { "HAVE_ATTRIBUTE_COLD", DEFINES_FUNC, NULL, + { "HAVE_ATTRIBUTE_COLD", "__attribute__((cold)) support", + "DEFINES_FUNC", NULL, NULL, "static int __attribute__((cold)) func(int x) { return x; }" }, - { "HAVE_ATTRIBUTE_CONST", DEFINES_FUNC, NULL, + { "HAVE_ATTRIBUTE_CONST", "__attribute__((const)) support", + "DEFINES_FUNC", NULL, NULL, "static int __attribute__((const)) func(int x) { return x; }" }, - { "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL, + { "HAVE_ATTRIBUTE_PURE", "__attribute__((pure)) support", + "DEFINES_FUNC", NULL, NULL, + "static int __attribute__((pure)) func(int x) { return x; }" }, + { "HAVE_ATTRIBUTE_MAY_ALIAS", "__attribute__((may_alias)) support", + "OUTSIDE_MAIN", NULL, NULL, "typedef short __attribute__((__may_alias__)) short_a;" }, - { "HAVE_ATTRIBUTE_NORETURN", DEFINES_FUNC, NULL, + { "HAVE_ATTRIBUTE_NORETURN", "__attribute__((noreturn)) support", + "DEFINES_FUNC", NULL, NULL, "#include \n" "static void __attribute__((noreturn)) func(int x) { exit(x); }" }, - { "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL, - "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }" }, - { "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, + { "HAVE_ATTRIBUTE_PRINTF", "__attribute__ format printf support", + "DEFINES_FUNC", NULL, NULL, + "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { (void)fmt; }" }, + { "HAVE_ATTRIBUTE_UNUSED", "__attribute__((unused)) support", + "OUTSIDE_MAIN", NULL, NULL, "static int __attribute__((unused)) func(int x) { return x; }" }, - { "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL, + { "HAVE_ATTRIBUTE_USED", "__attribute__((used)) support", + "OUTSIDE_MAIN", NULL, NULL, "static int __attribute__((used)) func(int x) { return x; }" }, - { "HAVE_BACKTRACE", DEFINES_FUNC, NULL, + { "HAVE_BACKTRACE", "backtrace() in ", + "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, + { "HAVE_BIG_ENDIAN", "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", "bswap64 in byteswap.h", + "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", "__builtin_choose_expr support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_choose_expr(1, 0, \"garbage\");" }, - { "HAVE_BUILTIN_CLZ", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_CLZ", "__builtin_clz support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;" }, - { "HAVE_BUILTIN_CLZL", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_CLZL", "__builtin_clzl support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;" }, - { "HAVE_BUILTIN_CLZLL", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_CLZLL", "__builtin_clzll support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;" }, - { "HAVE_BUILTIN_CONSTANT_P", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_CTZ", "__builtin_ctz support", + "INSIDE_MAIN", NULL, NULL, + "return __builtin_ctz(1 << (sizeof(int)*8 - 1)) == (sizeof(int)*8 - 1) ? 0 : 1;" }, + { "HAVE_BUILTIN_CTZL", "__builtin_ctzl support", + "INSIDE_MAIN", NULL, NULL, + "return __builtin_ctzl(1UL << (sizeof(long)*8 - 1)) == (sizeof(long)*8 - 1) ? 0 : 1;" }, + { "HAVE_BUILTIN_CTZLL", "__builtin_ctzll support", + "INSIDE_MAIN", NULL, NULL, + "return __builtin_ctzll(1ULL << (sizeof(long long)*8 - 1)) == (sizeof(long long)*8 - 1) ? 0 : 1;" }, + { "HAVE_BUILTIN_CONSTANT_P", "__builtin_constant_p support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_constant_p(1) ? 0 : 1;" }, - { "HAVE_BUILTIN_EXPECT", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_EXPECT", "__builtin_expect support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_expect(argc == 1, 1) ? 0 : 1;" }, - { "HAVE_BUILTIN_FFSL", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_FFS", "__builtin_ffs support", + "INSIDE_MAIN", NULL, NULL, + "return __builtin_ffs(0) == 0 ? 0 : 1;" }, + { "HAVE_BUILTIN_FFSL", "__builtin_ffsl support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_ffsl(0L) == 0 ? 0 : 1;" }, - { "HAVE_BUILTIN_FFSLL", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_FFSLL", "__builtin_ffsll support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_ffsll(0LL) == 0 ? 0 : 1;" }, - { "HAVE_BUILTIN_POPCOUNTL", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_POPCOUNT", "__builtin_popcount support", + "INSIDE_MAIN", NULL, NULL, + "return __builtin_popcount(255) == 8 ? 0 : 1;" }, + { "HAVE_BUILTIN_POPCOUNTL", "__builtin_popcountl support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_popcountl(255L) == 8 ? 0 : 1;" }, - { "HAVE_BUILTIN_TYPES_COMPATIBLE_P", INSIDE_MAIN, NULL, + { "HAVE_BUILTIN_POPCOUNTLL", "__builtin_popcountll support", + "INSIDE_MAIN", NULL, NULL, + "return __builtin_popcountll(255LL) == 8 ? 0 : 1;" }, + { "HAVE_BUILTIN_TYPES_COMPATIBLE_P", "__builtin_types_compatible_p support", + "INSIDE_MAIN", NULL, NULL, "return __builtin_types_compatible_p(char *, int) ? 1 : 0;" }, - { "HAVE_BYTESWAP_H", OUTSIDE_MAIN, NULL, + { "HAVE_ICCARM_INTRINSICS", "", + "DEFINES_FUNC", NULL, NULL, + "#include \n" + "int func(int v) {\n" + " return __CLZ(__RBIT(v));\n" + "}" }, + { "HAVE_BYTESWAP_H", "", + "OUTSIDE_MAIN", NULL, NULL, "#include \n" }, - { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, + { "HAVE_CLOCK_GETTIME", "clock_gettime() declaration", + "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", "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", + /* This means HAVE_CLOCK_GETTIME, too */ + "HAVE_CLOCK_GETTIME" }, + { "HAVE_COMPOUND_LITERALS", "compound literal support", + "INSIDE_MAIN", NULL, 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", + { "HAVE_FCHDIR", "fchdir support", + "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", 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", "_FILE_OFFSET_BITS to get 64-bit offsets", + "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", + "HAVE_32BIT_OFF_T", NULL, "#define _FILE_OFFSET_BITS 64\n" "#include \n" - "int main(int argc, char *argv[]) {\n" + "int main(void) {\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_FLEXIBLE_ARRAY_MEMBER", OUTSIDE_MAIN, NULL, + { "HAVE_FOR_LOOP_DECLARATION", "for loop declaration support", + "INSIDE_MAIN", NULL, NULL, + "int ret = 1;\n" + "for (int i = 0; i < argc; i++) { ret = 0; };\n" + "return ret;" }, + { "HAVE_FLEXIBLE_ARRAY_MEMBER", "flexible array member support", + "OUTSIDE_MAIN", NULL, NULL, "struct foo { unsigned int x; int arr[]; };" }, - { "HAVE_GETPAGESIZE", DEFINES_FUNC, NULL, + { "HAVE_GETPAGESIZE", "getpagesize() in ", + "DEFINES_FUNC", NULL, NULL, "#include \n" "static int func(void) { return getpagesize(); }" }, - { "HAVE_ISBLANK", DEFINES_FUNC, NULL, + { "HAVE_ISBLANK", "isblank() in ", + "DEFINES_FUNC", NULL, NULL, + "#ifndef _GNU_SOURCE\n" "#define _GNU_SOURCE\n" + "#endif\n" "#include \n" "static int func(void) { return isblank(' '); }" }, - { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL, + { "HAVE_LITTLE_ENDIAN", "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", "memmem in ", + "DEFINES_FUNC", NULL, NULL, + "#ifndef _GNU_SOURCE\n" "#define _GNU_SOURCE\n" + "#endif\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, + { "HAVE_MEMRCHR", "memrchr in ", + "DEFINES_FUNC", NULL, NULL, + "#ifndef _GNU_SOURCE\n" + "#define _GNU_SOURCE\n" + "#endif\n" + "#include \n" + "static void *func(void *s, int c, size_t n) {\n" + "return memrchr(s, c, n);" + "}\n", }, + { "HAVE_MMAP", "mmap() declaration", + "DEFINES_FUNC", NULL, NULL, "#include \n" "static void *func(int fd) {\n" " return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n" "}" }, - { "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE, NULL, + { "HAVE_PROC_SELF_MAPS", "/proc/self/maps exists", + "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", 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, - "#define _GNU_SOURCE 1\n" + { "HAVE_QSORT_R_PRIVATE_LAST", "qsort_r cmp takes trailing arg", + "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", NULL, NULL, + "#ifndef _GNU_SOURCE\n" + "#define _GNU_SOURCE\n" + "#endif\n" "#include \n" "static int cmp(const void *lp, const void *rp, void *priv) {\n" " *(unsigned int *)priv = 1;\n" @@ -181,107 +349,236 @@ static struct test tests[] = { " 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, + { "HAVE_STRUCT_TIMESPEC", "struct timespec declaration", + "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", "__attribute__((section)) and __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, - "static long nest(const void *base, unsigned int i)\n" + { "HAVE_STACK_GROWS_UPWARDS", "stack grows upwards", + "DEFINES_EVERYTHING|EXECUTE", NULL, NULL, + "#include \n" + "static ptrdiff_t 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;" + " (void)argv;\n" + " return (nest(&argc, argc) > 0) ? 0 : 1;\n" "}\n" }, - { "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL, + { "HAVE_STATEMENT_EXPR", "statement expression support", + "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_SYS_UNISTD_H", "", + "OUTSIDE_MAIN", NULL, NULL, + "#include \n" }, + { "HAVE_TYPEOF", "__typeof__ support", + "INSIDE_MAIN", NULL, NULL, "__typeof__(argc) i; i = argc; return i == argc ? 0 : 1;" }, - { "HAVE_UTIME", DEFINES_FUNC, NULL, + { "HAVE_UNALIGNED_ACCESS", "unaligned access to int", + "DEFINES_EVERYTHING|EXECUTE", NULL, NULL, + "#include \n" + "int main(int argc, char *argv[]) {\n" + " (void)argc;\n" + " char pad[sizeof(int *) * 1];\n" + " strncpy(pad, argv[0], sizeof(pad));\n" + " int *x = (int *)pad, *y = (int *)(pad + 1);\n" + " return *x == *y;\n" + "}\n" }, + { "HAVE_UTIME", "utime() declaration", + "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", "__attribute__((warn_unused_result))", + "DEFINES_FUNC", NULL, NULL, "#include \n" "#include \n" "static __attribute__((warn_unused_result)) int func(int i) {\n" " return i + 1;\n" "}" }, + { "HAVE_OPENMP", "#pragma omp and -fopenmp support", + "INSIDE_MAIN", NULL, NULL, + "int i;\n" + "#pragma omp parallel for\n" + "for(i = 0; i < 0; i++) {};\n" + "return 0;\n", + "-Werror -fopenmp" }, + { "HAVE_VALGRIND_MEMCHECK_H", "", + "OUTSIDE_MAIN", NULL, NULL, + "#include \n" }, + { "HAVE_UCONTEXT", "working \n" + "static int x = 0;\n" + "static char stack[2048];\n" + "static ucontext_t a, b;\n" + "static void fn(void) {\n" + " x |= 2;\n" + " setcontext(&b);\n" + " x |= 4;\n" + "}\n" + "int main(void) {\n" + " x |= 1;\n" + " getcontext(&a);\n" + " a.uc_stack.ss_sp = stack;\n" + " a.uc_stack.ss_size = sizeof(stack);\n" + " makecontext(&a, fn, 0);\n" + " swapcontext(&b, &a);\n" + " return (x == 3) ? 0 : 1;\n" + "}\n" + }, + { "HAVE_POINTER_SAFE_MAKECONTEXT", "passing pointers via makecontext()", + "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", + "HAVE_UCONTEXT", NULL, + "#include \n" + "#include \n" + "static int worked = 0;\n" + "static char stack[1024];\n" + "static ucontext_t a, b;\n" + "static void fn(void *p, void *q) {\n" + " void *cp = &worked;\n" + " void *cq = (void *)(~((ptrdiff_t)cp));\n" + " if ((p == cp) && (q == cq))\n" + " worked = 1;\n" + " setcontext(&b);\n" + "}\n" + "int main(void) {\n" + " void *ap = &worked;\n" + " void *aq = (void *)(~((ptrdiff_t)ap));\n" + " getcontext(&a);\n" + " a.uc_stack.ss_sp = stack;\n" + " a.uc_stack.ss_size = sizeof(stack);\n" + " makecontext(&a, (void (*)(void))fn, 2, ap, aq);\n" + " swapcontext(&b, &a);\n" + " return worked ? 0 : 1;\n" + "}\n" + }, }; -static char *grab_fd(int fd) +static void c12r_err(int eval, const char *fmt, ...) { - int ret; - size_t max, size = 0; + int err_errno = errno; + va_list ap; + + fprintf(stderr, "%s: ", progname); + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + fprintf(stderr, ": %s\n", strerror(err_errno)); + exit(eval); +} + +static void c12r_errx(int eval, const char *fmt, ...) +{ + va_list ap; + + fprintf(stderr, "%s: ", progname); + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + fprintf(stderr, "\n"); + exit(eval); +} + +static void start_test(const char *what, const char *why) +{ + if (like_a_libtool) { + printf("%s%s... ", what, why); + fflush(stdout); + } +} + +static void end_test(bool result) +{ + if (like_a_libtool) + printf("%s\n", result ? "yes" : "no"); +} + +static size_t fcopy(FILE *fsrc, FILE *fdst) +{ + char buffer[BUFSIZ]; + size_t rsize, wsize; + size_t copied = 0; + + while ((rsize = fread(buffer, 1, BUFSIZ, fsrc)) > 0) { + wsize = fwrite(buffer, 1, rsize, fdst); + copied += wsize; + if (wsize != rsize) + break; + } + + return copied; +} + +static char *grab_stream(FILE *file) +{ + size_t max, ret, size = 0; char *buffer; - max = 16384; - buffer = malloc(max+1); - while ((ret = read(fd, buffer + size, max - size)) > 0) { + max = BUFSIZ; + buffer = malloc(max); + while ((ret = fread(buffer+size, 1, max - size, file)) == max - size) { size += ret; - if (size == max) - buffer = realloc(buffer, max *= 2); + buffer = realloc(buffer, max *= 2); } - if (ret < 0) - err(1, "reading from command"); + size += ret; + if (ferror(file)) + c12r_err(1, "reading from command"); buffer[size] = '\0'; return buffer; } static char *run(const char *cmd, int *exitstatus) { - pid_t pid; - int p[2]; + static const char redir[] = " 2>&1"; + size_t cmdlen; + char *cmdredir; + FILE *cmdout; char *ret; - int status; - if (pipe(p) != 0) - err(1, "creating pipe"); - - pid = fork(); - if (pid == -1) - err(1, "forking"); - - if (pid == 0) { - if (dup2(p[1], STDOUT_FILENO) != STDOUT_FILENO - || dup2(p[1], STDERR_FILENO) != STDERR_FILENO - || close(p[0]) != 0 - || close(STDIN_FILENO) != 0 - || open("/dev/null", O_RDONLY) != STDIN_FILENO) - exit(128); - - status = system(cmd); - if (WIFEXITED(status)) - exit(WEXITSTATUS(status)); - /* Here's a hint... */ - exit(128 + WTERMSIG(status)); - } + cmdlen = strlen(cmd); + cmdredir = malloc(cmdlen + sizeof(redir)); + memcpy(cmdredir, cmd, cmdlen); + memcpy(cmdredir + cmdlen, redir, sizeof(redir)); + + cmdout = popen(cmdredir, "r"); + if (!cmdout) + c12r_err(1, "popen \"%s\"", cmdredir); - close(p[1]); - ret = grab_fd(p[0]); - /* This shouldn't fail... */ - if (waitpid(pid, &status, 0) != pid) - err(1, "Failed to wait for child"); - close(p[0]); - if (WIFEXITED(status)) - *exitstatus = WEXITSTATUS(status); - else - *exitstatus = -WTERMSIG(status); + free(cmdredir); + + ret = grab_stream(cmdout); + *exitstatus = pclose(cmdout); return ret; } -static char *connect_args(const char *argv[], const char *extra) +static char *connect_args(const char *argv[], const char *outflag, + const char *files) { - unsigned int i, len = strlen(extra) + 1; + unsigned int i; char *ret; + size_t len = strlen(outflag) + strlen(files) + 1; for (i = 1; argv[i]; i++) len += 1 + strlen(argv[i]); @@ -291,9 +588,12 @@ static char *connect_args(const 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] || *outflag) + ret[len++] = ' '; } - strcpy(ret + len, extra); + strcpy(ret + len, outflag); + len += strlen(outflag); + strcpy(ret + len, files); return ret; } @@ -301,90 +601,144 @@ static struct test *find_test(const char *name) { unsigned int i; - for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) { + for (i = 0; tests[i].name; i++) { if (strcmp(tests[i].name, name) == 0) return &tests[i]; } + c12r_errx(2, "Unknown test %s", name); abort(); } #define PRE_BOILERPLATE "/* Test program generated by configurator. */\n" -#define MAIN_START_BOILERPLATE "int main(int argc, char *argv[]) {\n" +#define MAIN_START_BOILERPLATE \ + "int main(int argc, char *argv[]) {\n" \ + " (void)argc;\n" \ + " (void)argv;\n" #define USE_FUNC_BOILERPLATE "(void)func;\n" #define MAIN_BODY_BOILERPLATE "return 0;\n" #define MAIN_END_BOILERPLATE "}\n" static bool run_test(const char *cmd, struct test *test) { - char *output; + char *output, *newcmd; FILE *outf; int status; 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, " ")) != 0) { + 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; + } + if (deps[len]) + free(dep); + + deps += len; + deps += strspn(deps, " "); + } } - outf = fopen(INPUT_FILE, "w"); + outf = fopen(INPUT_FILE, verbose > 1 ? "w+" : "w"); if (!outf) - err(1, "creating %s", INPUT_FILE); + c12r_err(1, "creating %s", INPUT_FILE); fprintf(outf, "%s", PRE_BOILERPLATE); - switch (test->style & ~(EXECUTE|MAY_NOT_COMPILE)) { - case INSIDE_MAIN: + + if (strstr(test->style, "INSIDE_MAIN")) { fprintf(outf, "%s", MAIN_START_BOILERPLATE); fprintf(outf, "%s", test->fragment); fprintf(outf, "%s", MAIN_END_BOILERPLATE); - break; - case OUTSIDE_MAIN: + } else if (strstr(test->style, "OUTSIDE_MAIN")) { fprintf(outf, "%s", test->fragment); fprintf(outf, "%s", MAIN_START_BOILERPLATE); fprintf(outf, "%s", MAIN_BODY_BOILERPLATE); fprintf(outf, "%s", MAIN_END_BOILERPLATE); - break; - case DEFINES_FUNC: + } else if (strstr(test->style, "DEFINES_FUNC")) { fprintf(outf, "%s", test->fragment); fprintf(outf, "%s", MAIN_START_BOILERPLATE); fprintf(outf, "%s", USE_FUNC_BOILERPLATE); fprintf(outf, "%s", MAIN_BODY_BOILERPLATE); fprintf(outf, "%s", MAIN_END_BOILERPLATE); - break; - case DEFINES_EVERYTHING: + } else if (strstr(test->style, "DEFINES_EVERYTHING")) { fprintf(outf, "%s", test->fragment); - break; - default: - abort(); + } else + c12r_errx(2, "Unknown style for test %s: %s", + test->name, test->style); + if (verbose > 1) { + fseek(outf, 0, SEEK_SET); + fcopy(outf, stdout); } + fclose(outf); - if (verbose > 1) - if (system("cat " INPUT_FILE) == -1); + newcmd = strdup(cmd); + + if (test->flags) { + newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ") + + strlen(test->flags) + 1); + strcat(newcmd, " "); + strcat(newcmd, test->flags); + if (verbose > 1) + printf("Extra flags line: %s", newcmd); + } + + if (test->link) { + newcmd = realloc(newcmd, strlen(newcmd) + strlen(" ") + + strlen(test->link) + 1); + strcat(newcmd, " "); + strcat(newcmd, test->link); + if (verbose > 1) + printf("Extra link line: %s", newcmd); + } + + start_test("checking for ", test->desc); + output = run(newcmd, &status); + + free(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) && !(test->style & MAY_NOT_COMPILE)) - errx(1, "Test for %s did not compile:\n%s", - test->name, output); + if (strstr(test->style, "EXECUTE") + && !strstr(test->style, "MAY_NOT_COMPILE")) + c12r_errx(1, "Test for %s did not compile:\n%s", + test->name, output); test->answer = false; free(output); } else { /* Compile succeeded. */ free(output); /* We run INSIDE_MAIN tests for sanity checking. */ - if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) { - output = run("./" OUTPUT_FILE, &status); - if (!(test->style & EXECUTE) && status != 0) - errx(1, "Test for %s failed with %i:\n%s", - test->name, status, output); + if (strstr(test->style, "EXECUTE") + || strstr(test->style, "INSIDE_MAIN")) { + output = run("." DIR_SEP OUTPUT_FILE, &status); + if (!strstr(test->style, "EXECUTE") && status != 0) + c12r_errx(1, "Test for %s failed with %i:\n%s", + test->name, status, output); if (verbose && status) printf("%s exited %i\n", test->name, status); free(output); @@ -392,58 +746,286 @@ static bool run_test(const char *cmd, struct test *test) test->answer = (status == 0); } test->done = true; + end_test(test->answer); + + if (test->answer && test->overrides) { + struct test *override = find_test(test->overrides); + override->done = true; + override->answer = true; + } return test->answer; } +static char *any_field(char **fieldname) +{ + char buf[1000]; + for (;;) { + char *p, *eq; + + if (!fgets(buf, sizeof(buf), stdin)) + return NULL; + + p = buf; + /* Ignore whitespace, lines starting with # */ + while (*p == ' ' || *p == '\t') + p++; + if (*p == '#' || *p == '\n') + continue; + + eq = strchr(p, '='); + if (!eq) + c12r_errx(2, "no = in line: %s", p); + *eq = '\0'; + *fieldname = strdup(p); + p = eq + 1; + if (strlen(p) && p[strlen(p)-1] == '\n') + p[strlen(p)-1] = '\0'; + return strdup(p); + } +} + +static char *read_field(const char *name, bool compulsory) +{ + char *fieldname, *value; + + value = any_field(&fieldname); + if (!value) { + if (!compulsory) + return NULL; + c12r_errx(2, "Could not read field %s", name); + } + if (strcmp(fieldname, name) != 0) + c12r_errx(2, "Expected field %s not %s", name, fieldname); + return value; +} + +/* Test descriptions from stdin: + * Lines starting with # or whitespace-only are ignored. + * + * First three non-ignored lines must be: + * var= + * desc= + * style=OUTSIDE_MAIN DEFINES_FUNC INSIDE_MAIN DEFINES_EVERYTHING EXECUTE MAY_NOT_COMPILE + * + * Followed by optional lines: + * depends= + * link= + * flags= + * overrides= + * + * Finally a code line, either: + * code= OR + * code= + * + * + * + * And looks like this next comment: */ +/*END*/ +static bool read_test(struct test *test) +{ + char *field, *value; + char buf[1000]; + + memset(test, 0, sizeof(*test)); + test->name = read_field("var", false); + if (!test->name) + return false; + test->desc = read_field("desc", true); + test->style = read_field("style", true); + /* Read any optional fields. */ + while ((value = any_field(&field)) != NULL) { + if (strcmp(field, "depends") == 0) + test->depends = value; + else if (strcmp(field, "link") == 0) + test->link = value; + else if (strcmp(field, "flags") == 0) + test->flags = value; + else if (strcmp(field, "overrides") == 0) + test->overrides = value; + else if (strcmp(field, "code") == 0) + break; + else + c12r_errx(2, "Unknown field %s in %s", + field, test->name); + } + if (!value) + c12r_errx(2, "Missing code in %s", test->name); + + if (strlen(value) == 0) { + /* Multiline program, read to END comment */ + while (fgets(buf, sizeof(buf), stdin) != 0) { + size_t n; + if (strncmp(buf, "/*END*/", 7) == 0) + break; + n = strlen(value); + value = realloc(value, n + strlen(buf) + 1); + strcpy(value + n, buf); + n += strlen(buf); + } + } + test->fragment = value; + return true; +} + +static void read_tests(size_t num_tests) +{ + while (read_test(tests + num_tests)) { + num_tests++; + tests = realloc(tests, num_tests * sizeof(tests[0])); + } +} + int main(int argc, const char *argv[]) { char *cmd; unsigned int i; const char *default_args[] = { "", DEFAULT_COMPILER, DEFAULT_FLAGS, NULL }; + const char *outflag = DEFAULT_OUTPUT_EXE_FLAG; + const char *configurator_cc = NULL; + const char *orig_cc; + const char *varfile = NULL; + const char *headerfile = NULL; + bool extra_tests = false; + FILE *outf; - if (argc > 1) { + if (argc > 0) + progname = argv[0]; + + while (argc > 1) { if (strcmp(argv[1], "--help") == 0) { - printf("Usage: configurator [-v] [ ...]\n" - " will have \"-o \" appended\n" - "Default: %s %s\n", - DEFAULT_COMPILER, DEFAULT_FLAGS); + printf("Usage: configurator [-v] [--var-file=] [-O] [--configurator-cc=] [--autotools-style] [--extra-tests] [ ...]\n" + " will have \" \" appended\n" + "Default: %s %s %s\n", + DEFAULT_COMPILER, DEFAULT_FLAGS, + DEFAULT_OUTPUT_EXE_FLAG); exit(0); } - if (strcmp(argv[1], "-v") == 0) { + if (strncmp(argv[1], "-O", 2) == 0) { argc--; argv++; - verbose = 1; + outflag = argv[1] + 2; + if (!*outflag) { + fprintf(stderr, + "%s: option requires an argument -- O\n", + argv[0]); + exit(1); + } + } else if (strcmp(argv[1], "-v") == 0) { + argc--; + argv++; + verbose++; } else if (strcmp(argv[1], "-vv") == 0) { argc--; argv++; - verbose = 2; + verbose += 2; + } else if (strncmp(argv[1], "--configurator-cc=", 18) == 0) { + configurator_cc = argv[1] + 18; + argc--; + argv++; + } else if (strncmp(argv[1], "--var-file=", 11) == 0) { + varfile = argv[1] + 11; + argc--; + argv++; + } else if (strcmp(argv[1], "--autotools-style") == 0) { + like_a_libtool = true; + argc--; + argv++; + } else if (strncmp(argv[1], "--header-file=", 14) == 0) { + headerfile = argv[1] + 14; + argc--; + argv++; + } else if (strcmp(argv[1], "--extra-tests") == 0) { + extra_tests = true; + argc--; + argv++; + } else if (strcmp(argv[1], "--") == 0) { + break; + } else if (argv[1][0] == '-') { + c12r_errx(2, "Unknown option %s", argv[1]); + } else { + break; } } if (argc == 1) argv = default_args; - cmd = connect_args(argv, "-o " OUTPUT_FILE " " INPUT_FILE); - for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) + /* Copy with NULL entry at end */ + tests = calloc(sizeof(base_tests)/sizeof(base_tests[0]) + 1, + sizeof(base_tests[0])); + memcpy(tests, base_tests, sizeof(base_tests)); + + if (extra_tests) + read_tests(sizeof(base_tests)/sizeof(base_tests[0])); + + orig_cc = argv[1]; + if (configurator_cc) + argv[1] = configurator_cc; + + cmd = connect_args(argv, outflag, OUTPUT_FILE " " INPUT_FILE); + if (like_a_libtool) { + start_test("Making autoconf users comfortable", ""); + sleep(1); + end_test(1); + } + for (i = 0; tests[i].name; i++) run_test(cmd, &tests[i]); + free(cmd); + + remove(OUTPUT_FILE); + remove(INPUT_FILE); - unlink(OUTPUT_FILE); - unlink(INPUT_FILE); + if (varfile) { + FILE *vars; - cmd[strlen(cmd) - strlen(" -o " OUTPUT_FILE " " INPUT_FILE)] = '\0'; - printf("/* Generated by CCAN configurator */\n" + if (strcmp(varfile, "-") == 0) + vars = stdout; + else { + start_test("Writing variables to ", varfile); + vars = fopen(varfile, "a"); + if (!vars) + c12r_err(2, "Could not open %s", varfile); + } + for (i = 0; tests[i].name; i++) + fprintf(vars, "%s=%u\n", tests[i].name, tests[i].answer); + if (vars != stdout) { + if (fclose(vars) != 0) + c12r_err(2, "Closing %s", varfile); + end_test(1); + } + } + + if (headerfile) { + start_test("Writing header to ", headerfile); + outf = fopen(headerfile, "w"); + if (!outf) + c12r_err(2, "Could not open %s", headerfile); + } else + outf = stdout; + + fprintf(outf, "/* 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); + fprintf(outf, "#ifndef _GNU_SOURCE\n"); + fprintf(outf, "#define _GNU_SOURCE /* Always use GNU extensions. */\n"); + fprintf(outf, "#endif\n"); + fprintf(outf, "#define CCAN_COMPILER \"%s\"\n", orig_cc); + cmd = connect_args(argv + 1, "", ""); + fprintf(outf, "#define CCAN_CFLAGS \"%s\"\n", cmd); + free(cmd); + fprintf(outf, "#define CCAN_OUTPUT_EXE_CFLAG \"%s\"\n\n", outflag); /* This one implies "#include