--- /dev/null
+/* CC0 (Public domain) - see LICENSE file for details */
+#ifndef CCAN_ENDIAN_H
+#define CCAN_ENDIAN_H
+#include <stdint.h>
+#include "config.h"
+
+/**
+ * BSWAP_16 - reverse bytes in a constant uint16_t value.
+ * @val: constant value whose bytes to swap.
+ *
+ * Designed to be usable in constant-requiring initializers.
+ *
+ * Example:
+ * struct mystruct {
+ * char buf[BSWAP_16(0x1234)];
+ * };
+ */
+#define BSWAP_16(val) \
+ ((((uint16_t)(val) & 0x00ff) << 8) \
+ | (((uint16_t)(val) & 0xff00) >> 8))
+
+/**
+ * BSWAP_32 - reverse bytes in a constant uint32_t value.
+ * @val: constant value whose bytes to swap.
+ *
+ * Designed to be usable in constant-requiring initializers.
+ *
+ * Example:
+ * struct mystruct {
+ * char buf[BSWAP_32(0xff000000)];
+ * };
+ */
+#define BSWAP_32(val) \
+ ((((uint32_t)(val) & 0x000000ff) << 24) \
+ | (((uint32_t)(val) & 0x0000ff00) << 8) \
+ | (((uint32_t)(val) & 0x00ff0000) >> 8) \
+ | (((uint32_t)(val) & 0xff000000) >> 24))
+
+/**
+ * BSWAP_64 - reverse bytes in a constant uint64_t value.
+ * @val: constantvalue whose bytes to swap.
+ *
+ * Designed to be usable in constant-requiring initializers.
+ *
+ * Example:
+ * struct mystruct {
+ * char buf[BSWAP_64(0xff00000000000000ULL)];
+ * };
+ */
+#define BSWAP_64(val) \
+ ((((uint64_t)(val) & 0x00000000000000ffULL) << 56) \
+ | (((uint64_t)(val) & 0x000000000000ff00ULL) << 40) \
+ | (((uint64_t)(val) & 0x0000000000ff0000ULL) << 24) \
+ | (((uint64_t)(val) & 0x00000000ff000000ULL) << 8) \
+ | (((uint64_t)(val) & 0x000000ff00000000ULL) >> 8) \
+ | (((uint64_t)(val) & 0x0000ff0000000000ULL) >> 24) \
+ | (((uint64_t)(val) & 0x00ff000000000000ULL) >> 40) \
+ | (((uint64_t)(val) & 0xff00000000000000ULL) >> 56))
+
+#if HAVE_BYTESWAP_H
+#include <byteswap.h>
+#else
+/**
+ * bswap_16 - reverse bytes in a uint16_t value.
+ * @val: value whose bytes to swap.
+ *
+ * Example:
+ * // Output contains "1024 is 4 as two bytes reversed"
+ * printf("1024 is %u as two bytes reversed\n", bswap_16(1024));
+ */
+static inline uint16_t bswap_16(uint16_t val)
+{
+ return BSWAP_16(val);
+}
+
+/**
+ * bswap_32 - reverse bytes in a uint32_t value.
+ * @val: value whose bytes to swap.
+ *
+ * Example:
+ * // Output contains "1024 is 262144 as four bytes reversed"
+ * printf("1024 is %u as four bytes reversed\n", bswap_32(1024));
+ */
+static inline uint32_t bswap_32(uint32_t val)
+{
+ return BSWAP_32(val);
+}
+#endif /* !HAVE_BYTESWAP_H */
+
+#if !HAVE_BSWAP_64
+/**
+ * bswap_64 - reverse bytes in a uint64_t value.
+ * @val: value whose bytes to swap.
+ *
+ * Example:
+ * // Output contains "1024 is 1125899906842624 as eight bytes reversed"
+ * printf("1024 is %llu as eight bytes reversed\n",
+ * (unsigned long long)bswap_64(1024));
+ */
+static inline uint64_t bswap_64(uint64_t val)
+{
+ return BSWAP_64(val);
+}
+#endif
+
+/* Needed for Glibc like endiness check */
+#define __LITTLE_ENDIAN 1234
+#define __BIG_ENDIAN 4321
+
+/* Sanity check the defines. We don't handle weird endianness. */
+#if !HAVE_LITTLE_ENDIAN && !HAVE_BIG_ENDIAN
+#error "Unknown endian"
+#elif HAVE_LITTLE_ENDIAN && HAVE_BIG_ENDIAN
+#error "Can't compile for both big and little endian."
+#elif HAVE_LITTLE_ENDIAN
+#ifndef __BYTE_ORDER
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#elif __BYTE_ORDER != __LITTLE_ENDIAN
+#error "__BYTE_ORDER already defined, but not equal to __LITTLE_ENDIAN"
+#endif
+#elif HAVE_BIG_ENDIAN
+#ifndef __BYTE_ORDER
+#define __BYTE_ORDER __BIG_ENDIAN
+#elif __BYTE_ORDER != __BIG_ENDIAN
+#error "__BYTE_ORDER already defined, but not equal to __BIG_ENDIAN"
+#endif
+#endif
+
+
+#ifdef __CHECKER__
+/* sparse needs forcing to remove bitwise attribute from ccan/short_types */
+#define ENDIAN_CAST __attribute__((force))
+#define ENDIAN_TYPE __attribute__((bitwise))
+#else
+#define ENDIAN_CAST
+#define ENDIAN_TYPE
+#endif
+
+typedef uint64_t ENDIAN_TYPE leint64_t;
+typedef uint64_t ENDIAN_TYPE beint64_t;
+typedef uint32_t ENDIAN_TYPE leint32_t;
+typedef uint32_t ENDIAN_TYPE beint32_t;
+typedef uint16_t ENDIAN_TYPE leint16_t;
+typedef uint16_t ENDIAN_TYPE beint16_t;
+
+#if HAVE_LITTLE_ENDIAN
+/**
+ * CPU_TO_LE64 - convert a constant uint64_t value to little-endian
+ * @native: constant to convert
+ */
+#define CPU_TO_LE64(native) ((ENDIAN_CAST leint64_t)(native))
+
+/**
+ * CPU_TO_LE32 - convert a constant uint32_t value to little-endian
+ * @native: constant to convert
+ */
+#define CPU_TO_LE32(native) ((ENDIAN_CAST leint32_t)(native))
+
+/**
+ * CPU_TO_LE16 - convert a constant uint16_t value to little-endian
+ * @native: constant to convert
+ */
+#define CPU_TO_LE16(native) ((ENDIAN_CAST leint16_t)(native))
+
+/**
+ * LE64_TO_CPU - convert a little-endian uint64_t constant
+ * @le_val: little-endian constant to convert
+ */
+#define LE64_TO_CPU(le_val) ((ENDIAN_CAST uint64_t)(le_val))
+
+/**
+ * LE32_TO_CPU - convert a little-endian uint32_t constant
+ * @le_val: little-endian constant to convert
+ */
+#define LE32_TO_CPU(le_val) ((ENDIAN_CAST uint32_t)(le_val))
+
+/**
+ * LE16_TO_CPU - convert a little-endian uint16_t constant
+ * @le_val: little-endian constant to convert
+ */
+#define LE16_TO_CPU(le_val) ((ENDIAN_CAST uint16_t)(le_val))
+
+#else /* ... HAVE_BIG_ENDIAN */
+#define CPU_TO_LE64(native) ((ENDIAN_CAST leint64_t)BSWAP_64(native))
+#define CPU_TO_LE32(native) ((ENDIAN_CAST leint32_t)BSWAP_32(native))
+#define CPU_TO_LE16(native) ((ENDIAN_CAST leint16_t)BSWAP_16(native))
+#define LE64_TO_CPU(le_val) BSWAP_64((ENDIAN_CAST uint64_t)le_val)
+#define LE32_TO_CPU(le_val) BSWAP_32((ENDIAN_CAST uint32_t)le_val)
+#define LE16_TO_CPU(le_val) BSWAP_16((ENDIAN_CAST uint16_t)le_val)
+#endif /* HAVE_BIG_ENDIAN */
+
+#if HAVE_BIG_ENDIAN
+/**
+ * CPU_TO_BE64 - convert a constant uint64_t value to big-endian
+ * @native: constant to convert
+ */
+#define CPU_TO_BE64(native) ((ENDIAN_CAST beint64_t)(native))
+
+/**
+ * CPU_TO_BE32 - convert a constant uint32_t value to big-endian
+ * @native: constant to convert
+ */
+#define CPU_TO_BE32(native) ((ENDIAN_CAST beint32_t)(native))
+
+/**
+ * CPU_TO_BE16 - convert a constant uint16_t value to big-endian
+ * @native: constant to convert
+ */
+#define CPU_TO_BE16(native) ((ENDIAN_CAST beint16_t)(native))
+
+/**
+ * BE64_TO_CPU - convert a big-endian uint64_t constant
+ * @le_val: big-endian constant to convert
+ */
+#define BE64_TO_CPU(le_val) ((ENDIAN_CAST uint64_t)(le_val))
+
+/**
+ * BE32_TO_CPU - convert a big-endian uint32_t constant
+ * @le_val: big-endian constant to convert
+ */
+#define BE32_TO_CPU(le_val) ((ENDIAN_CAST uint32_t)(le_val))
+
+/**
+ * BE16_TO_CPU - convert a big-endian uint16_t constant
+ * @le_val: big-endian constant to convert
+ */
+#define BE16_TO_CPU(le_val) ((ENDIAN_CAST uint16_t)(le_val))
+
+#else /* ... HAVE_LITTLE_ENDIAN */
+#define CPU_TO_BE64(native) ((ENDIAN_CAST beint64_t)BSWAP_64(native))
+#define CPU_TO_BE32(native) ((ENDIAN_CAST beint32_t)BSWAP_32(native))
+#define CPU_TO_BE16(native) ((ENDIAN_CAST beint16_t)BSWAP_16(native))
+#define BE64_TO_CPU(le_val) BSWAP_64((ENDIAN_CAST uint64_t)le_val)
+#define BE32_TO_CPU(le_val) BSWAP_32((ENDIAN_CAST uint32_t)le_val)
+#define BE16_TO_CPU(le_val) BSWAP_16((ENDIAN_CAST uint16_t)le_val)
+#endif /* HAVE_LITTE_ENDIAN */
+
+
+/**
+ * cpu_to_le64 - convert a uint64_t value to little-endian
+ * @native: value to convert
+ */
+static inline leint64_t cpu_to_le64(uint64_t native)
+{
+ return CPU_TO_LE64(native);
+}
+
+/**
+ * cpu_to_le32 - convert a uint32_t value to little-endian
+ * @native: value to convert
+ */
+static inline leint32_t cpu_to_le32(uint32_t native)
+{
+ return CPU_TO_LE32(native);
+}
+
+/**
+ * cpu_to_le16 - convert a uint16_t value to little-endian
+ * @native: value to convert
+ */
+static inline leint16_t cpu_to_le16(uint16_t native)
+{
+ return CPU_TO_LE16(native);
+}
+
+/**
+ * le64_to_cpu - convert a little-endian uint64_t value
+ * @le_val: little-endian value to convert
+ */
+static inline uint64_t le64_to_cpu(leint64_t le_val)
+{
+ return LE64_TO_CPU(le_val);
+}
+
+/**
+ * le32_to_cpu - convert a little-endian uint32_t value
+ * @le_val: little-endian value to convert
+ */
+static inline uint32_t le32_to_cpu(leint32_t le_val)
+{
+ return LE32_TO_CPU(le_val);
+}
+
+/**
+ * le16_to_cpu - convert a little-endian uint16_t value
+ * @le_val: little-endian value to convert
+ */
+static inline uint16_t le16_to_cpu(leint16_t le_val)
+{
+ return LE16_TO_CPU(le_val);
+}
+
+/**
+ * cpu_to_be64 - convert a uint64_t value to big endian.
+ * @native: value to convert
+ */
+static inline beint64_t cpu_to_be64(uint64_t native)
+{
+ return CPU_TO_BE64(native);
+}
+
+/**
+ * cpu_to_be32 - convert a uint32_t value to big endian.
+ * @native: value to convert
+ */
+static inline beint32_t cpu_to_be32(uint32_t native)
+{
+ return CPU_TO_BE32(native);
+}
+
+/**
+ * cpu_to_be16 - convert a uint16_t value to big endian.
+ * @native: value to convert
+ */
+static inline beint16_t cpu_to_be16(uint16_t native)
+{
+ return CPU_TO_BE16(native);
+}
+
+/**
+ * be64_to_cpu - convert a big-endian uint64_t value
+ * @be_val: big-endian value to convert
+ */
+static inline uint64_t be64_to_cpu(beint64_t be_val)
+{
+ return BE64_TO_CPU(be_val);
+}
+
+/**
+ * be32_to_cpu - convert a big-endian uint32_t value
+ * @be_val: big-endian value to convert
+ */
+static inline uint32_t be32_to_cpu(beint32_t be_val)
+{
+ return BE32_TO_CPU(be_val);
+}
+
+/**
+ * be16_to_cpu - convert a big-endian uint16_t value
+ * @be_val: big-endian value to convert
+ */
+static inline uint16_t be16_to_cpu(beint16_t be_val)
+{
+ return BE16_TO_CPU(be_val);
+}
+
+/* Whichever they include first, they get these definitions. */
+#ifdef CCAN_SHORT_TYPES_H
+/**
+ * be64/be32/be16 - 64/32/16 bit big-endian representation.
+ */
+typedef beint64_t be64;
+typedef beint32_t be32;
+typedef beint16_t be16;
+
+/**
+ * le64/le32/le16 - 64/32/16 bit little-endian representation.
+ */
+typedef leint64_t le64;
+typedef leint32_t le32;
+typedef leint16_t le16;
+#endif
+#endif /* CCAN_ENDIAN_H */
--- /dev/null
+/* Simple tool to create config.h.
+ * Would be much easier with ccan modules, but deliberately standalone.
+ *
+ * Copyright 2011 Rusty Russell <rusty@rustcorp.com.au>. MIT license.
+ *
+ * c12r_err, c12r_errx functions copied from ccan/err/err.c
+ * Copyright Rusty Russell <rusty@rustcorp.com.au>. 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
+ * 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.
+ */
+#define _POSIX_C_SOURCE 200809L /* For pclose, popen, strdup */
+
+#define EXIT_BAD_USAGE 1
+#define EXIT_TROUBLE_RUNNING 2
+#define EXIT_BAD_TEST 3
+#define EXIT_BAD_INPUT 4
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#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"
+
+#ifdef _WIN32
+#define DIR_SEP "\\"
+#else
+#define DIR_SEP "/"
+#endif
+
+static const char *progname = "";
+static int verbose;
+static bool like_a_libtool = false;
+
+struct test {
+ const char *name;
+ 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.
+ * <nothing>:
+ * - 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;
+};
+
+/* 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 <sys/types.h>\n"
+ "int main(void) {\n"
+ " return sizeof(off_t) == 4 ? 0 : 1;\n"
+ "}\n" },
+ { "HAVE_ALIGNOF", "__alignof__ support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __alignof__(double) > 0 ? 0 : 1;" },
+ { "HAVE_ASPRINTF", "asprintf() declaration",
+ "DEFINES_FUNC", NULL, NULL,
+ "#ifndef _GNU_SOURCE\n"
+ "#define _GNU_SOURCE\n"
+ "#endif\n"
+ "#include <stdio.h>\n"
+ "static char *func(int x) {"
+ " char *p;\n"
+ " if (asprintf(&p, \"%u\", x) == -1) \n"
+ " p = NULL;\n"
+ " return p;\n"
+ "}" },
+ { "HAVE_ATTRIBUTE_COLD", "__attribute__((cold)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "static int __attribute__((cold)) func(int x) { return x; }" },
+ { "HAVE_ATTRIBUTE_CONST", "__attribute__((const)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "static int __attribute__((const)) func(int x) { return x; }" },
+ { "HAVE_ATTRIBUTE_DEPRECATED", "__attribute__((deprecated)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "static int __attribute__((deprecated)) func(int x) { return x; }" },
+ { "HAVE_ATTRIBUTE_NONNULL", "__attribute__((nonnull)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "static char *__attribute__((nonnull)) func(char *p) { return p; }" },
+ { "HAVE_ATTRIBUTE_RETURNS_NONNULL", "__attribute__((returns_nonnull)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "static const char *__attribute__((returns_nonnull)) func(void) { return \"hi\"; }" },
+ { "HAVE_ATTRIBUTE_SENTINEL", "__attribute__((sentinel)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "static int __attribute__((sentinel)) func(int i, ...) { return i; }" },
+ { "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", "__attribute__((noreturn)) support",
+ "DEFINES_FUNC", NULL, NULL,
+ "#include <stdlib.h>\n"
+ "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
+ { "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", "__attribute__((used)) support",
+ "OUTSIDE_MAIN", NULL, NULL,
+ "static int __attribute__((used)) func(int x) { return x; }" },
+ { "HAVE_BACKTRACE", "backtrace() in <execinfo.h>",
+ "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", "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", "bswap64 in byteswap.h",
+ "DEFINES_FUNC", "HAVE_BYTESWAP_H", NULL,
+ "#include <byteswap.h>\n"
+ "static int func(int x) { return bswap_64(x); }" },
+ { "HAVE_BUILTIN_CHOOSE_EXPR", "__builtin_choose_expr support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __builtin_choose_expr(1, 0, \"garbage\");" },
+ { "HAVE_BUILTIN_CLZ", "__builtin_clz support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1;" },
+ { "HAVE_BUILTIN_CLZL", "__builtin_clzl support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __builtin_clzl(1) == (sizeof(long)*8 - 1) ? 0 : 1;" },
+ { "HAVE_BUILTIN_CLZLL", "__builtin_clzll support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __builtin_clzll(1) == (sizeof(long long)*8 - 1) ? 0 : 1;" },
+ { "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", "__builtin_expect support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __builtin_expect(argc == 1, 1) ? 0 : 1;" },
+ { "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", "__builtin_ffsll support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return __builtin_ffsll(0LL) == 0 ? 0 : 1;" },
+ { "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_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_ICCARM_INTRINSICS", "<intrinsics.h>",
+ "DEFINES_FUNC", NULL, NULL,
+ "#include <intrinsics.h>\n"
+ "int func(int v) {\n"
+ " return __CLZ(__RBIT(v));\n"
+ "}" },
+ { "HAVE_BYTESWAP_H", "<byteswap.h>",
+ "OUTSIDE_MAIN", NULL, NULL,
+ "#include <byteswap.h>\n" },
+ { "HAVE_CLOCK_GETTIME", "clock_gettime() declaration",
+ "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", "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",
+ /* 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_FCHDIR", "fchdir support",
+ "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", 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", "<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", "_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 <sys/types.h>\n"
+ "int main(void) {\n"
+ " return sizeof(off_t) == 8 ? 0 : 1;\n"
+ "}\n" },
+ { "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", "getpagesize() in <unistd.h>",
+ "DEFINES_FUNC", NULL, NULL,
+ "#include <unistd.h>\n"
+ "static int func(void) { return getpagesize(); }" },
+ { "HAVE_ISBLANK", "isblank() in <ctype.h>",
+ "DEFINES_FUNC", NULL, NULL,
+ "#ifndef _GNU_SOURCE\n"
+ "#define _GNU_SOURCE\n"
+ "#endif\n"
+ "#include <ctype.h>\n"
+ "static int func(void) { return isblank(' '); }" },
+ { "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", "memmem in <string.h>",
+ "DEFINES_FUNC", NULL, NULL,
+ "#ifndef _GNU_SOURCE\n"
+ "#define _GNU_SOURCE\n"
+ "#endif\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_MEMRCHR", "memrchr in <string.h>",
+ "DEFINES_FUNC", NULL, NULL,
+ "#ifndef _GNU_SOURCE\n"
+ "#define _GNU_SOURCE\n"
+ "#endif\n"
+ "#include <string.h>\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 <sys/mman.h>\n"
+ "static void *func(int fd) {\n"
+ " return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
+ "}" },
+ { "HAVE_PROC_SELF_MAPS", "/proc/self/maps exists",
+ "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE", 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", "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 <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", "struct timespec declaration",
+ "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_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", "stack grows upwards",
+ "DEFINES_EVERYTHING|EXECUTE", NULL, NULL,
+ "#include <stddef.h>\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"
+ " (void)argv;\n"
+ " return (nest(&argc, argc) > 0) ? 0 : 1;\n"
+ "}\n" },
+ { "HAVE_STATEMENT_EXPR", "statement expression support",
+ "INSIDE_MAIN", NULL, NULL,
+ "return ({ int x = argc; x == argc ? 0 : 1; });" },
+ { "HAVE_SYS_FILIO_H", "<sys/filio.h>",
+ "OUTSIDE_MAIN", NULL, NULL, /* Solaris needs this for FIONREAD */
+ "#include <sys/filio.h>\n" },
+ { "HAVE_SYS_TERMIOS_H", "<sys/termios.h>",
+ "OUTSIDE_MAIN", NULL, NULL,
+ "#include <sys/termios.h>\n" },
+ { "HAVE_SYS_UNISTD_H", "<sys/unistd.h>",
+ "OUTSIDE_MAIN", NULL, NULL,
+ "#include <sys/unistd.h>\n" },
+ { "HAVE_TYPEOF", "__typeof__ support",
+ "INSIDE_MAIN", NULL, NULL,
+ "__typeof__(argc) i; i = argc; return i == argc ? 0 : 1;" },
+ { "HAVE_UNALIGNED_ACCESS", "unaligned access to int",
+ "DEFINES_EVERYTHING|EXECUTE", NULL, NULL,
+ "#include <string.h>\n"
+ "int main(int argc, char *argv[]) {\n"
+ " (void)argc;\n"
+ " char pad[sizeof(int *) * 1];\n"
+ " memcpy(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 <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", "__attribute__((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"
+ " return i + 1;\n"
+ "}" },
+ { "HAVE_OPENMP", "#pragma omp and -fopenmp support",
+ "INSIDE_MAIN|EXECUTE|MAY_NOT_COMPILE", 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", "<valgrind/memcheck.h>",
+ "OUTSIDE_MAIN", NULL, NULL,
+ "#include <valgrind/memcheck.h>\n" },
+ { "HAVE_UCONTEXT", "working <ucontext.h",
+ "DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE",
+ NULL, NULL,
+ "#include <ucontext.h>\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 <stddef.h>\n"
+ "#include <ucontext.h>\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"
+ },
+ { "HAVE_BUILTIN_CPU_SUPPORTS", "__builtin_cpu_supports()",
+ "DEFINES_FUNC", NULL, NULL,
+ "#include <stdbool.h>\n"
+ "static bool func(void) {\n"
+ " return __builtin_cpu_supports(\"mmx\");\n"
+ "}"
+ },
+};
+
+static void c12r_err(int eval, const char *fmt, ...)
+{
+ 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 = BUFSIZ;
+ buffer = malloc(max);
+ while ((ret = fread(buffer+size, 1, max - size, file)) == max - size) {
+ size += ret;
+ buffer = realloc(buffer, max *= 2);
+ }
+ size += ret;
+ if (ferror(file))
+ c12r_err(EXIT_TROUBLE_RUNNING, "reading from command");
+ buffer[size] = '\0';
+ return buffer;
+}
+
+static char *run(const char *cmd, int *exitstatus)
+{
+ static const char redir[] = " 2>&1";
+ size_t cmdlen;
+ char *cmdredir;
+ FILE *cmdout;
+ char *ret;
+
+ 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(EXIT_TROUBLE_RUNNING, "popen \"%s\"", cmdredir);
+
+ free(cmdredir);
+
+ ret = grab_stream(cmdout);
+ *exitstatus = pclose(cmdout);
+ return ret;
+}
+
+static char *connect_args(const char *argv[], const char *outflag,
+ const char *files)
+{
+ unsigned int i;
+ char *ret;
+ size_t len = strlen(outflag) + strlen(files) + 1;
+
+ for (i = 1; argv[i]; i++)
+ len += 1 + strlen(argv[i]);
+
+ ret = malloc(len);
+ len = 0;
+ for (i = 1; argv[i]; i++) {
+ strcpy(ret + len, argv[i]);
+ len += strlen(argv[i]);
+ if (argv[i+1] || *outflag)
+ ret[len++] = ' ';
+ }
+ strcpy(ret + len, outflag);
+ len += strlen(outflag);
+ strcpy(ret + len, files);
+ return ret;
+}
+
+static struct test *find_test(const char *name)
+{
+ unsigned int i;
+
+ for (i = 0; tests[i].name; i++) {
+ if (strcmp(tests[i].name, name) == 0)
+ return &tests[i];
+ }
+ c12r_errx(EXIT_BAD_TEST, "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" \
+ " (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, const char *wrapper, struct test *test)
+{
+ char *output, *newcmd;
+ FILE *outf;
+ int status;
+
+ if (test->done)
+ 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, wrapper, 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, verbose > 1 ? "w+" : "w");
+ if (!outf)
+ c12r_err(EXIT_TROUBLE_RUNNING, "creating %s", INPUT_FILE);
+
+ fprintf(outf, "%s", PRE_BOILERPLATE);
+
+ if (strstr(test->style, "INSIDE_MAIN")) {
+ fprintf(outf, "%s", MAIN_START_BOILERPLATE);
+ fprintf(outf, "%s", test->fragment);
+ fprintf(outf, "%s", MAIN_END_BOILERPLATE);
+ } 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);
+ } 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);
+ } else if (strstr(test->style, "DEFINES_EVERYTHING")) {
+ fprintf(outf, "%s", test->fragment);
+ } else
+ c12r_errx(EXIT_BAD_TEST, "Unknown style for test %s: %s",
+ test->name, test->style);
+
+ if (verbose > 1) {
+ fseek(outf, 0, SEEK_SET);
+ fcopy(outf, stdout);
+ }
+
+ fclose(outf);
+
+ 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);
+
+ 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 (strstr(test->style, "EXECUTE")
+ && !strstr(test->style, "MAY_NOT_COMPILE"))
+ c12r_errx(EXIT_BAD_TEST,
+ "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 (strstr(test->style, "EXECUTE")
+ || strstr(test->style, "INSIDE_MAIN")) {
+ char *cmd = malloc(strlen(wrapper) + strlen(" ." DIR_SEP OUTPUT_FILE) + 1);
+
+ strcpy(cmd, wrapper);
+ strcat(cmd, " ." DIR_SEP OUTPUT_FILE);
+ output = run(cmd, &status);
+ if (wrapper) {
+ free(cmd);
+ }
+ if (!strstr(test->style, "EXECUTE") && status != 0)
+ c12r_errx(EXIT_BAD_TEST,
+ "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);
+ }
+ 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(EXIT_BAD_INPUT, "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(EXIT_BAD_INPUT, "Could not read field %s", name);
+ }
+ if (strcmp(fieldname, name) != 0)
+ c12r_errx(EXIT_BAD_INPUT,
+ "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=<varname>
+ * desc=<description-for-autotools-style>
+ * style=OUTSIDE_MAIN DEFINES_FUNC INSIDE_MAIN DEFINES_EVERYTHING EXECUTE MAY_NOT_COMPILE
+ *
+ * Followed by optional lines:
+ * depends=<space-separated-testnames, ! to invert>
+ * link=<extra args for link line>
+ * flags=<extra args for compile line>
+ * overrides=<testname-to-force>
+ *
+ * Finally a code line, either:
+ * code=<oneline> OR
+ * code=
+ * <lines of code>
+ * <end-comment>
+ *
+ * And <end-comment> 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(EXIT_BAD_INPUT, "Unknown field %s in %s",
+ field, test->name);
+ }
+ if (!value)
+ c12r_errx(EXIT_BAD_INPUT, "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 + 1) * sizeof(tests[0]));
+ tests[num_tests].name = NULL;
+ }
+}
+
+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 *wrapper = "";
+ const char *orig_cc;
+ const char *varfile = NULL;
+ const char *headerfile = NULL;
+ bool extra_tests = false;
+ FILE *outf;
+
+ if (argc > 0)
+ progname = argv[0];
+
+ while (argc > 1) {
+ if (strcmp(argv[1], "--help") == 0) {
+ printf("Usage: configurator [-v] [--var-file=<filename>] [-O<outflag>] [--configurator-cc=<compiler-for-tests>] [--wrapper=<wrapper-for-tests>] [--autotools-style] [--extra-tests] [<compiler> <flags>...]\n"
+ " <compiler> <flags> will have \"<outflag> <outfile> <infile.c>\" appended\n"
+ "Default: %s %s %s\n",
+ DEFAULT_COMPILER, DEFAULT_FLAGS,
+ DEFAULT_OUTPUT_EXE_FLAG);
+ exit(0);
+ }
+ if (strncmp(argv[1], "-O", 2) == 0) {
+ argc--;
+ argv++;
+ outflag = argv[1] + 2;
+ if (!*outflag) {
+ fprintf(stderr,
+ "%s: option requires an argument -- O\n",
+ argv[0]);
+ exit(EXIT_BAD_USAGE);
+ }
+ } else if (strcmp(argv[1], "-v") == 0) {
+ argc--;
+ argv++;
+ verbose++;
+ } else if (strcmp(argv[1], "-vv") == 0) {
+ argc--;
+ argv++;
+ verbose += 2;
+ } else if (strncmp(argv[1], "--configurator-cc=", 18) == 0) {
+ configurator_cc = argv[1] + 18;
+ argc--;
+ argv++;
+ } else if (strncmp(argv[1], "--wrapper=", 10) == 0) {
+ wrapper = argv[1] + 10;
+ 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(EXIT_BAD_USAGE, "Unknown option %s", argv[1]);
+ } else {
+ break;
+ }
+ }
+
+ if (argc == 1)
+ argv = default_args;
+
+ /* 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, wrapper, &tests[i]);
+ free(cmd);
+
+ remove(OUTPUT_FILE);
+ remove(INPUT_FILE);
+
+ if (varfile) {
+ FILE *vars;
+
+ if (strcmp(varfile, "-") == 0)
+ vars = stdout;
+ else {
+ start_test("Writing variables to ", varfile);
+ vars = fopen(varfile, "a");
+ if (!vars)
+ c12r_err(EXIT_TROUBLE_RUNNING,
+ "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(EXIT_TROUBLE_RUNNING,
+ "Closing %s", varfile);
+ end_test(1);
+ }
+ }
+
+ if (headerfile) {
+ start_test("Writing header to ", headerfile);
+ outf = fopen(headerfile, "w");
+ if (!outf)
+ c12r_err(EXIT_TROUBLE_RUNNING,
+ "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");
+ 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 <ccan/..." works, eg. for tdb2.h */
+ fprintf(outf, "#define HAVE_CCAN 1\n");
+ for (i = 0; tests[i].name; i++)
+ fprintf(outf, "#define %s %u\n", tests[i].name, tests[i].answer);
+ fprintf(outf, "#endif /* CCAN_CONFIG_H */\n");
+
+ if (headerfile) {
+ if (fclose(outf) != 0)
+ c12r_err(EXIT_TROUBLE_RUNNING, "Closing %s", headerfile);
+ end_test(1);
+ }
+
+ return 0;
+}
projects / users / sagi / nvme-cli.git / commitdiff