dnl see if a declaration exists for a function or variable dnl defines HAVE_function_DECL if it exists dnl AC_HAVE_DECL(var, includes) AC_DEFUN(AC_HAVE_DECL, [ AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[ AC_TRY_COMPILE([$2],[int i = (int)$1], ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)]) if test x"$ac_cv_have_$1_decl" = x"yes"; then AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available]) fi ]) dnl find the libreplace sources. This is meant to work both for dnl libreplace standalone builds, and builds of packages using libreplace libreplacedir="" for d in "$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="dlfcn.o getpass.o replace.o snprintf.o timegm.o" AC_SUBST(LIBREPLACEOBJ) AC_CHECK_HEADERS([stdint.h inttypes.h]) AC_CHECK_TYPE(uint_t, unsigned int) AC_CHECK_TYPE(uint8_t, unsigned char) AC_CHECK_TYPE(int8_t, char) AC_CHECK_TYPE(int16_t, short) AC_CHECK_TYPE(uint16_t, unsigned short) AC_CHECK_TYPE(int32_t, long) AC_CHECK_TYPE(intptr_t, unsigned long long) AC_CHECK_TYPE(uint32_t, unsigned long) AC_CHECK_TYPE(ssize_t, int) AC_CHECK_HEADERS(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 #endif] ) AC_CACHE_CHECK([for broken inet_ntoa],samba_cv_REPLACE_INET_NTOA,[ AC_TRY_RUN([ #include #include #include #ifdef HAVE_ARPA_INET_H #include #endif main() { struct in_addr ip; ip.s_addr = 0x12345678; if (strcmp(inet_ntoa(ip),"18.52.86.120") && strcmp(inet_ntoa(ip),"120.86.52.18")) { exit(0); } exit(1);}], samba_cv_REPLACE_INET_NTOA=yes,samba_cv_REPLACE_INET_NTOA=no,samba_cv_REPLACE_INET_NTOA=cross)]) if test x"$samba_cv_REPLACE_INET_NTOA" = x"yes"; then AC_DEFINE(REPLACE_INET_NTOA,1,[Whether inet_ntoa should be replaced]) fi dnl Provided by replace.c: AC_TRY_COMPILE([ #include #if STDC_HEADERS #include #include #endif #include ], [socklen_t foo;],, [AC_DEFINE(socklen_t, int,[Socket length type])]) AC_CHECK_HEADERS(sys/syslog.h syslog.h) AC_CHECK_HEADERS(sys/time.h time.h) AC_CHECK_HEADERS(sys/socket.h netinet/in.h) AC_CHECK_HEADERS(stdarg.h vararg.h) AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror) AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename) AC_CHECK_FUNCS(waitpid strlcpy strlcat innetgr initgroups memmove strdup) AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp) AC_HAVE_DECL(setresuid, [#include ]) AC_HAVE_DECL(setresgid, [#include ]) AC_HAVE_DECL(errno, [#include ]) AC_CACHE_CHECK([for secure mkstemp],samba_cv_HAVE_SECURE_MKSTEMP,[ AC_TRY_RUN([#include #include #include #include main() { struct stat st; char tpl[20]="/tmp/test.XXXXXX"; int fd = mkstemp(tpl); if (fd == -1) exit(1); unlink(tpl); if (fstat(fd, &st) != 0) exit(1); if ((st.st_mode & 0777) != 0600) exit(1); exit(0); }], samba_cv_HAVE_SECURE_MKSTEMP=yes, samba_cv_HAVE_SECURE_MKSTEMP=no, samba_cv_HAVE_SECURE_MKSTEMP=cross)]) if test x"$samba_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],samba_cv_HAVE_C99_VSNPRINTF,[ AC_TRY_RUN([ #include #include #include #include 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"); } ], samba_cv_HAVE_C99_VSNPRINTF=yes,samba_cv_HAVE_C99_VSNPRINTF=no,samba_cv_HAVE_C99_VSNPRINTF=cross)]) if test x"$samba_cv_HAVE_C99_VSNPRINTF" = x"yes"; then AC_DEFINE(HAVE_C99_VSNPRINTF,1,[Whether there is a C99 compliant vsnprintf]) fi dnl dummies provided by dlfcn.c if not available save_LIBS="$LIBS" LIBS="" AC_SEARCH_LIBS(dlopen, dl) AC_CHECK_HEADERS(dlfcn.h) AC_CHECK_FUNCS(dlopen dlsym dlerror dlclose) LIBDL="$LIBS" AC_SUBST(LIBDL) LIBS="$save_LIBS" AC_CHECK_FUNCS([syslog memset setnetgrent getnetgrent endnetgrent memcpy],, [AC_MSG_ERROR([Required function not found])]) m4_include(getpass.m4) m4_include(libreplace_macros.m4) m4_include(system/config.m4) LIBREPLACE_C99_STRUCT_INIT(c99_struct_initialization=yes, c99_struct_initialization=no) dnl VA_COPY AC_CACHE_CHECK([for va_copy],samba_cv_HAVE_VA_COPY,[ AC_TRY_LINK([#include va_list ap1,ap2;], [va_copy(ap1,ap2);], samba_cv_HAVE_VA_COPY=yes,samba_cv_HAVE_VA_COPY=no)]) if test x"$samba_cv_HAVE_VA_COPY" = x"yes"; then AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available]) fi if test x"$samba_cv_HAVE_VA_COPY" != x"yes"; then AC_CACHE_CHECK([for __va_copy],samba_cv_HAVE___VA_COPY,[ AC_TRY_LINK([#include va_list ap1,ap2;], [__va_copy(ap1,ap2);], samba_cv_HAVE___VA_COPY=yes,samba_cv_HAVE___VA_COPY=no)]) if test x"$samba_cv_HAVE___VA_COPY" = x"yes"; then AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available]) fi fi dnl __FUNCTION__ macro AC_CACHE_CHECK([for __FUNCTION__ macro],samba_cv_HAVE_FUNCTION_MACRO,[ AC_TRY_COMPILE([#include ], [printf("%s\n", __FUNCTION__);], samba_cv_HAVE_FUNCTION_MACRO=yes,samba_cv_HAVE_FUNCTION_MACRO=no)]) if test x"$samba_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],samba_cv_HAVE_func_MACRO,[ AC_TRY_COMPILE([#include ], [printf("%s\n", __func__);], samba_cv_HAVE_func_MACRO=yes,samba_cv_HAVE_func_MACRO=no)]) if test x"$samba_cv_HAVE_func_MACRO" = x"yes"; then AC_DEFINE(HAVE_func_MACRO,1,[Whether there is a __func__ macro]) fi fi AC_CHECK_HEADERS([sys/param.h limits.h]) AC_CHECK_TYPE(comparison_fn_t, [AC_DEFINE(HAVE_COMPARISON_FN_T, 1,[Whether or not we have comparison_fn_t])]) AC_CHECK_FUNCS(timegm strnlen setenv) AC_CHECK_FUNCS(strtoull __strtoull strtouq strtoll __strtoll strtoq) # this test disabled as we don't actually need __VA_ARGS__ yet # AC_TRY_CPP([ # #define eprintf(...) fprintf(stderr, __VA_ARGS__) # eprintf("bla", "bar"); # ], [], [AC_MSG_ERROR([__VA_ARGS__ is required])]) # Check prerequisites AC_CHECK_FUNCS([memset printf syslog], [], [ AC_MSG_ERROR([Required function not found])]) AC_CACHE_CHECK([for sig_atomic_t type],samba_cv_sig_atomic_t, [ AC_TRY_COMPILE([ #include #if STDC_HEADERS #include #include #endif #include ],[sig_atomic_t i = 0], samba_cv_sig_atomic_t=yes,samba_cv_sig_atomic_t=no)]) if test x"$samba_cv_sig_atomic_t" = x"yes"; then AC_DEFINE(HAVE_SIG_ATOMIC_T_TYPE,1,[Whether we have the atomic_t variable type]) fi