diff options
Diffstat (limited to 'replace/libreplace.m4')
| -rw-r--r-- | replace/libreplace.m4 | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/replace/libreplace.m4 b/replace/libreplace.m4 new file mode 100644 index 000000000..71fa04167 --- /dev/null +++ b/replace/libreplace.m4 @@ -0,0 +1,303 @@ +AC_DEFUN_ONCE(AC_LIBREPLACE_LOCATION_CHECKS, +[ +echo "LIBREPLACE_LOCATION_CHECKS: START" + +dnl find the libreplace sources. This is meant to work both for +dnl libreplace standalone builds, and builds of packages using libreplace +libreplacedir="" +libreplacepaths="$srcdir $srcdir/lib/replace $srcdir/libreplace $srcdir/../libreplace $srcdir/../replace" +for d in $libreplacepaths; do + if test -f "$d/replace.c"; then + libreplacedir="$d" + AC_SUBST(libreplacedir) + break; + fi +done +if test x"$libreplacedir" = "x"; then + AC_MSG_ERROR([cannot find libreplace in $libreplacepaths]) +fi +LIBREPLACEOBJ="replace.o" +AC_SUBST(LIBREPLACEOBJ) + +AC_CANONICAL_BUILD +AC_CANONICAL_HOST +AC_CANONICAL_TARGET + +echo "LIBREPLACE_LOCATION_CHECKS: END" +]) dnl end AC_LIBREPLACE_LOCATION_CHECKS + + +AC_DEFUN_ONCE(AC_LIBREPLACE_BROKEN_CHECKS, +[ +echo "LIBREPLACE_BROKEN_CHECKS: START" + +dnl find the libreplace sources. This is meant to work both for +dnl libreplace standalone builds, and builds of packages using libreplace +libreplacedir="" +for d in "$srcdir" "$srcdir/lib/replace" "$srcdir/libreplace" "$srcdir/../libreplace" "$srcdir/../replace"; do + if test -f "$d/replace.c"; then + libreplacedir="$d" + AC_SUBST(libreplacedir) + break; + fi +done +LIBREPLACEOBJ="replace.o" +AC_SUBST(LIBREPLACEOBJ) + +LIBREPLACEOBJ="${LIBREPLACEOBJ} snprintf.o" + +AC_TYPE_SIGNAL +AC_TYPE_UID_T +AC_TYPE_MODE_T +AC_TYPE_OFF_T +AC_TYPE_SIZE_T +AC_TYPE_PID_T +AC_STRUCT_ST_RDEV +AC_CHECK_TYPE(ino_t,unsigned) +AC_CHECK_TYPE(loff_t,off_t) +AC_CHECK_TYPE(offset_t,loff_t) + +AC_FUNC_MEMCMP + +AC_CHECK_FUNCS(pipe strftime srandom random srand rand usleep setbuffer lstat getpgrp) + +AC_CHECK_HEADERS(stdbool.h stdint.h sys/select.h) +AC_CHECK_HEADERS(setjmp.h) + +LIBREPLACE_PROVIDE_HEADER([stdint.h]) +LIBREPLACE_PROVIDE_HEADER([stdbool.h]) + +AC_CHECK_TYPE(bool, +[AC_DEFINE(HAVE_BOOL, 1, [Whether the bool type is available])],, +[ +AC_INCLUDES_DEFAULT +#ifdef HAVE_STDBOOL_H +#include <stdbool.h> +#endif] +) + +AC_CHECK_TYPE(_Bool, +[AC_DEFINE(HAVE__Bool, 1, [Whether the _Bool type is available])],, +[ +AC_INCLUDES_DEFAULT +#ifdef HAVE_STDBOOL_H +#include <stdbool.h> +#endif] +) + +AC_CACHE_CHECK([for working mmap],libreplace_cv_HAVE_MMAP,[ +AC_TRY_RUN([#include "$libreplacedir/test/shared_mmap.c"], + libreplace_cv_HAVE_MMAP=yes,libreplace_cv_HAVE_MMAP=no,libreplace_cv_HAVE_MMAP=cross)]) +if test x"$libreplace_cv_HAVE_MMAP" = x"yes"; then + AC_DEFINE(HAVE_MMAP,1,[Whether mmap works]) +fi + + +AC_CHECK_HEADERS(sys/syslog.h syslog.h) +AC_CHECK_HEADERS(sys/time.h time.h) +AC_CHECK_HEADERS(stdarg.h vararg.h) +AC_CHECK_HEADERS(sys/mount.h mntent.h) +AC_CHECK_HEADERS(stropts.h) + +AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror) +AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename) +AC_CHECK_FUNCS(waitpid strlcpy strlcat initgroups memmove strdup) +AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp) +AC_CHECK_FUNCS(isatty) +AC_HAVE_DECL(setresuid, [#include <unistd.h>]) +AC_HAVE_DECL(setresgid, [#include <unistd.h>]) +AC_HAVE_DECL(errno, [#include <errno.h>]) + +AC_CACHE_CHECK([for secure mkstemp],libreplace_cv_HAVE_SECURE_MKSTEMP,[ +AC_TRY_RUN([#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +main() { + struct stat st; + char tpl[20]="/tmp/test.XXXXXX"; + int fd = mkstemp(tpl); + if (fd == -1) exit(1); + unlink(tpl); + if (fstat(fd, &st) != 0) exit(1); + if ((st.st_mode & 0777) != 0600) exit(1); + exit(0); +}], +libreplace_cv_HAVE_SECURE_MKSTEMP=yes, +libreplace_cv_HAVE_SECURE_MKSTEMP=no, +libreplace_cv_HAVE_SECURE_MKSTEMP=cross)]) +if test x"$libreplace_cv_HAVE_SECURE_MKSTEMP" = x"yes"; then + AC_DEFINE(HAVE_SECURE_MKSTEMP,1,[Whether mkstemp is secure]) +fi + +dnl Provided by snprintf.c: +AC_CHECK_HEADERS(stdio.h strings.h) +AC_CHECK_DECLS([snprintf, vsnprintf, asprintf, vasprintf]) +AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf) + +AC_CACHE_CHECK([for C99 vsnprintf],libreplace_cv_HAVE_C99_VSNPRINTF,[ +AC_TRY_RUN([ +#include <sys/types.h> +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +void foo(const char *format, ...) { + va_list ap; + int len; + char buf[20]; + long long l = 1234567890; + l *= 100; + + va_start(ap, format); + len = vsnprintf(buf, 0, format, ap); + va_end(ap); + if (len != 5) exit(1); + + va_start(ap, format); + len = vsnprintf(0, 0, format, ap); + va_end(ap); + if (len != 5) exit(2); + + if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(3); + + if (snprintf(buf, 20, "%lld", l) != 12 || strcmp(buf, "123456789000") != 0) exit(4); + if (snprintf(buf, 20, "%zu", 123456789) != 9 || strcmp(buf, "123456789") != 0) exit(5); + if (snprintf(buf, 20, "%2\$d %1\$d", 3, 4) != 3 || strcmp(buf, "4 3") != 0) exit(6); + if (snprintf(buf, 20, "%s", 0) < 3) exit(7); + + exit(0); +} +main() { foo("hello"); } +], +libreplace_cv_HAVE_C99_VSNPRINTF=yes,libreplace_cv_HAVE_C99_VSNPRINTF=no,libreplace_cv_HAVE_C99_VSNPRINTF=cross)]) +if test x"$libreplace_cv_HAVE_C99_VSNPRINTF" = x"yes"; then + AC_DEFINE(HAVE_C99_VSNPRINTF,1,[Whether there is a C99 compliant vsnprintf]) +fi + + +dnl VA_COPY +AC_CACHE_CHECK([for va_copy],libreplace_cv_HAVE_VA_COPY,[ +AC_TRY_LINK([#include <stdarg.h> +va_list ap1,ap2;], [va_copy(ap1,ap2);], +libreplace_cv_HAVE_VA_COPY=yes,libreplace_cv_HAVE_VA_COPY=no)]) +if test x"$libreplace_cv_HAVE_VA_COPY" = x"yes"; then + AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available]) +fi + +if test x"$libreplace_cv_HAVE_VA_COPY" != x"yes"; then +AC_CACHE_CHECK([for __va_copy],libreplace_cv_HAVE___VA_COPY,[ +AC_TRY_LINK([#include <stdarg.h> +va_list ap1,ap2;], [__va_copy(ap1,ap2);], +libreplace_cv_HAVE___VA_COPY=yes,libreplace_cv_HAVE___VA_COPY=no)]) +if test x"$libreplace_cv_HAVE___VA_COPY" = x"yes"; then + AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available]) +fi +fi + +dnl __FUNCTION__ macro +AC_CACHE_CHECK([for __FUNCTION__ macro],libreplace_cv_HAVE_FUNCTION_MACRO,[ +AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __FUNCTION__);], +libreplace_cv_HAVE_FUNCTION_MACRO=yes,libreplace_cv_HAVE_FUNCTION_MACRO=no)]) +if test x"$libreplace_cv_HAVE_FUNCTION_MACRO" = x"yes"; then + AC_DEFINE(HAVE_FUNCTION_MACRO,1,[Whether there is a __FUNCTION__ macro]) +else + dnl __func__ macro + AC_CACHE_CHECK([for __func__ macro],libreplace_cv_HAVE_func_MACRO,[ + AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __func__);], + libreplace_cv_HAVE_func_MACRO=yes,libreplace_cv_HAVE_func_MACRO=no)]) + if test x"$libreplace_cv_HAVE_func_MACRO" = x"yes"; then + AC_DEFINE(HAVE_func_MACRO,1,[Whether there is a __func__ macro]) + fi +fi + +AC_CHECK_HEADERS([sys/param.h limits.h]) + +AC_CHECK_TYPE(comparison_fn_t, +[AC_DEFINE(HAVE_COMPARISON_FN_T, 1,[Whether or not we have comparison_fn_t])]) + +AC_HAVE_DECL(setenv, [#include <stdlib.h>]) +AC_CHECK_FUNCS(setenv unsetenv) + +AC_CHECK_FUNCS(strnlen) +AC_CHECK_FUNCS(strtoull __strtoull strtouq strtoll __strtoll strtoq) + +# this test disabled as we don't actually need __VA_ARGS__ yet +AC_TRY_CPP([ +#define eprintf(...) fprintf(stderr, __VA_ARGS__) +eprintf("bla", "bar"); +], AC_DEFINE(HAVE__VA_ARGS__MACRO, 1, [Whether the __VA_ARGS__ macro is available])) + + +AC_CACHE_CHECK([for sig_atomic_t type],libreplace_cv_sig_atomic_t, [ + AC_TRY_COMPILE([ +#include <sys/types.h> +#if STDC_HEADERS +#include <stdlib.h> +#include <stddef.h> +#endif +#include <signal.h>],[sig_atomic_t i = 0], + libreplace_cv_sig_atomic_t=yes,libreplace_cv_sig_atomic_t=no)]) +if test x"$libreplace_cv_sig_atomic_t" = x"yes"; then + AC_DEFINE(HAVE_SIG_ATOMIC_T_TYPE,1,[Whether we have the atomic_t variable type]) +fi + + +AC_CACHE_CHECK([for O_DIRECT flag to open(2)],libreplace_cv_HAVE_OPEN_O_DIRECT,[ +AC_TRY_COMPILE([ +#include <unistd.h> +#ifdef HAVE_FCNTL_H +#include <fcntl.h> +#endif], +[int fd = open("/dev/null", O_DIRECT);], +libreplace_cv_HAVE_OPEN_O_DIRECT=yes,libreplace_cv_HAVE_OPEN_O_DIRECT=no)]) +if test x"$libreplace_cv_HAVE_OPEN_O_DIRECT" = x"yes"; then + AC_DEFINE(HAVE_OPEN_O_DIRECT,1,[Whether the open(2) accepts O_DIRECT]) +fi + + +dnl Check if the C compiler understands volatile (it should, being ANSI). +AC_CACHE_CHECK([that the C compiler understands volatile],libreplace_cv_volatile, [ + AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0], + libreplace_cv_volatile=yes,libreplace_cv_volatile=no)]) +if test x"$libreplace_cv_volatile" = x"yes"; then + AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile]) +fi + +m4_include(system/config.m4) + +m4_include(dlfcn.m4) +m4_include(getpass.m4) +m4_include(strptime.m4) +m4_include(win32.m4) +m4_include(timegm.m4) +m4_include(repdir.m4) + +AC_CHECK_FUNCS([syslog printf memset memcpy],,[AC_MSG_ERROR([Required function not found])]) + +echo "LIBREPLACE_BROKEN_CHECKS: END" +]) dnl end AC_LIBREPLACE_BROKEN_CHECKS + +AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_START, +[ +#LIBREPLACE_ALL_CHECKS: START" +]) +AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_END, +[ +#LIBREPLACE_ALL_CHECKS: END" +]) +m4_define(AC_LIBREPLACE_ALL_CHECKS, +[ +AC__LIBREPLACE_ALL_CHECKS_START +AC_LIBREPLACE_LOCATION_CHECKS +AC_LIBREPLACE_CC_CHECKS +AC_LIBREPLACE_BROKEN_CHECKS +AC__LIBREPLACE_ALL_CHECKS_END +CFLAGS="$CFLAGS -I$libreplacedir" +]) + +m4_include(libreplace_cc.m4) +m4_include(libreplace_ld.m4) +m4_include(libreplace_network.m4) +m4_include(libreplace_macros.m4) + +m4_ifndef([AC_USE_SYSTEM_EXTENSIONS],[m4_include(autoconf-2.60.m4)]) |