# -*- Autoconf -*- # Process this file with autoconf to produce a configure script. ## Definitions of private macros. # GIT_CONF_SUBST(VAL, VAR) # ------------------------ # Cause the line "VAR=VAL" to be eventually appended to ${config_file}. AC_DEFUN([GIT_CONF_SUBST], [AC_REQUIRE([GIT_CONF_SUBST_INIT]) config_appended_defs="$config_appended_defs${newline}dnl $1=m4_if([$#],[1],[${$1}],[$2])"]) # GIT_CONF_SUBST_INIT # ------------------- # Prepare shell variables and autoconf machine required by later calls # to GIT_CONF_SUBST. AC_DEFUN([GIT_CONF_SUBST_INIT], [config_appended_defs=; newline=' ' AC_CONFIG_COMMANDS([$config_file], [echo "$config_appended_defs" >> "$config_file"], [config_file=$config_file config_appended_defs="$config_appended_defs"])]) # GIT_ARG_SET_PATH(PROGRAM) # ------------------------- # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM # Optional second argument allows setting NO_PROGRAM=YesPlease if # --without-PROGRAM version used. 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GIT_STASH_FLAGS($OPENSSLDIR) AC_CHECK_LIB([crypto], [SHA1_Init], [NEEDS_SSL_WITH_CRYPTO=], [AC_CHECK_LIB([ssl], [SHA1_Init], [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=], [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])]) GIT_UNSTASH_FLAGS($OPENSSLDIR) GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO]) GIT_CONF_SUBST([NO_OPENSSL]) # # Handle the USE_LIBPCRE options potentially set above. # if test -n "$USE_LIBPCRE2"; then GIT_STASH_FLAGS($LIBPCREDIR) AC_CHECK_LIB([pcre2-8], [pcre2_config_8], [USE_LIBPCRE2=YesPlease], [USE_LIBPCRE2=]) GIT_UNSTASH_FLAGS($LIBPCREDIR) GIT_CONF_SUBST([USE_LIBPCRE2]) fi # # Define NO_CURL if you do not have libcurl installed. git-http-pull and # git-http-push are not built, and you cannot use http:// and https:// # transports. GIT_STASH_FLAGS($CURLDIR) AC_CHECK_LIB([curl], [curl_global_init], [NO_CURL=], [NO_CURL=YesPlease]) GIT_UNSTASH_FLAGS($CURLDIR) GIT_CONF_SUBST([NO_CURL]) if test -z "$NO_CURL"; then AC_CHECK_PROG([CURL_CONFIG], [curl-config], [curl-config], [no]) if test $CURL_CONFIG != no; then GIT_CONF_SUBST([CURL_CONFIG]) if test -z "$CURL_CONFIG_OPTS"; then CURL_CONFIG_OPTS="--libs" fi CURL_LDFLAGS=$($CURL_CONFIG $CURL_CONFIG_OPTS) AC_MSG_NOTICE([Setting CURL_LDFLAGS to '$CURL_LDFLAGS']) GIT_CONF_SUBST([CURL_LDFLAGS], [$CURL_LDFLAGS]) fi fi # # Define NO_EXPAT if you do not have expat installed. git-http-push is # not built, and you cannot push using http:// and https:// transports. GIT_STASH_FLAGS($EXPATDIR) AC_CHECK_LIB([expat], [XML_ParserCreate], [NO_EXPAT=], [NO_EXPAT=YesPlease]) GIT_UNSTASH_FLAGS($EXPATDIR) GIT_CONF_SUBST([NO_EXPAT]) # # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and # some Solaris installations). # Define NO_ICONV if neither libc nor libiconv support iconv. if test -z "$NO_ICONV"; then GIT_STASH_FLAGS($ICONVDIR) AC_DEFUN([ICONVTEST_SRC], [AC_LANG_PROGRAM([#include ], [iconv_open("", "");])]) if test -n "$ICONVDIR"; then lib_order="-liconv -lc" else lib_order="-lc -liconv" fi NO_ICONV=YesPlease for l in $lib_order; do if test "$l" = "-liconv"; then NEEDS_LIBICONV=YesPlease else NEEDS_LIBICONV= fi old_LIBS="$LIBS" LIBS="$LIBS $l" AC_MSG_CHECKING([for iconv in $l]) AC_LINK_IFELSE([ICONVTEST_SRC], [AC_MSG_RESULT([yes]) NO_ICONV= break], [AC_MSG_RESULT([no])]) LIBS="$old_LIBS" done #in case of break LIBS="$old_LIBS" GIT_UNSTASH_FLAGS($ICONVDIR) GIT_CONF_SUBST([NEEDS_LIBICONV]) GIT_CONF_SUBST([NO_ICONV]) if test -n "$NO_ICONV"; then NEEDS_LIBICONV= fi fi # # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib. GIT_STASH_FLAGS($ZLIB_PATH) AC_DEFUN([ZLIBTEST_SRC], [ AC_LANG_PROGRAM([#include ], [deflateBound(0, 0);])]) AC_MSG_CHECKING([for deflateBound in -lz]) old_LIBS="$LIBS" LIBS="$LIBS -lz" AC_LINK_IFELSE([ZLIBTEST_SRC], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]) NO_DEFLATE_BOUND=yes]) LIBS="$old_LIBS" GIT_UNSTASH_FLAGS($ZLIB_PATH) GIT_CONF_SUBST([NO_DEFLATE_BOUND]) # # Define NEEDS_SOCKET if linking with libc is not enough (SunOS, # Patrick Mauritz). AC_CHECK_LIB([c], [socket], [NEEDS_SOCKET=], [NEEDS_SOCKET=YesPlease]) GIT_CONF_SUBST([NEEDS_SOCKET]) test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket" # # The next few tests will define NEEDS_RESOLV if linking with # libresolv provides some of the functions we would normally get # from libc. NEEDS_RESOLV= # # Define NO_INET_NTOP if linking with -lresolv is not enough. # Solaris 2.7 in particular hos inet_ntop in -lresolv. NO_INET_NTOP= AC_CHECK_FUNC([inet_ntop], [], [AC_CHECK_LIB([resolv], [inet_ntop], [NEEDS_RESOLV=YesPlease], [NO_INET_NTOP=YesPlease]) ]) GIT_CONF_SUBST([NO_INET_NTOP]) # # Define NO_INET_PTON if linking with -lresolv is not enough. # Solaris 2.7 in particular hos inet_pton in -lresolv. NO_INET_PTON= AC_CHECK_FUNC([inet_pton], [], [AC_CHECK_LIB([resolv], [inet_pton], [NEEDS_RESOLV=YesPlease], [NO_INET_PTON=YesPlease]) ]) GIT_CONF_SUBST([NO_INET_PTON]) # # Define NO_HSTRERROR if linking with -lresolv is not enough. # Solaris 2.6 in particular has no hstrerror, even in -lresolv. NO_HSTRERROR= AC_CHECK_FUNC([hstrerror], [], [AC_CHECK_LIB([resolv], [hstrerror], [NEEDS_RESOLV=YesPlease], [NO_HSTRERROR=YesPlease]) ]) GIT_CONF_SUBST([NO_HSTRERROR]) dnl This must go after all the possible places for its initialization, dnl in the AC_CHECK_FUNC invocations above. GIT_CONF_SUBST([NEEDS_RESOLV]) # # If any of the above tests determined that -lresolv is needed at # build-time, also set it here for remaining configure-time checks. test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv" AC_CHECK_LIB([c], [basename], [NEEDS_LIBGEN=], [NEEDS_LIBGEN=YesPlease]) GIT_CONF_SUBST([NEEDS_LIBGEN]) test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen" AC_DEFUN([LIBINTL_SRC], [ AC_LANG_PROGRAM([[ #include ]],[[ char *msg = gettext("test"); ]])]) AC_MSG_CHECKING([if libc contains libintl]) AC_LINK_IFELSE([LIBINTL_SRC], [AC_MSG_RESULT([yes]) LIBC_CONTAINS_LIBINTL=YesPlease], [AC_MSG_RESULT([no]) LIBC_CONTAINS_LIBINTL=]) GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL]) # # Define NO_GETTEXT if you don't want Git output to be translated. # A translated Git requires GNU libintl or another gettext implementation AC_CHECK_HEADER([libintl.h], [NO_GETTEXT=], [NO_GETTEXT=YesPlease]) GIT_CONF_SUBST([NO_GETTEXT]) if test -z "$NO_GETTEXT"; then test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl" fi ## Checks for header files. AC_MSG_NOTICE([CHECKS for header files]) # # Define NO_SYS_SELECT_H if you don't have sys/select.h. AC_CHECK_HEADER([sys/select.h], [NO_SYS_SELECT_H=], [NO_SYS_SELECT_H=UnfortunatelyYes]) GIT_CONF_SUBST([NO_SYS_SELECT_H]) # # Define NO_POLL_H if you don't have poll.h AC_CHECK_HEADER([poll.h], [NO_POLL_H=], [NO_POLL_H=UnfortunatelyYes]) GIT_CONF_SUBST([NO_POLL_H]) # # Define NO_SYS_POLL_H if you don't have sys/poll.h AC_CHECK_HEADER([sys/poll.h], [NO_SYS_POLL_H=], [NO_SYS_POLL_H=UnfortunatelyYes]) GIT_CONF_SUBST([NO_SYS_POLL_H]) # # Define NO_INTTYPES_H if you don't have inttypes.h AC_CHECK_HEADER([inttypes.h], [NO_INTTYPES_H=], [NO_INTTYPES_H=UnfortunatelyYes]) GIT_CONF_SUBST([NO_INTTYPES_H]) # # Define OLD_ICONV if your library has an old iconv(), where the second # (input buffer pointer) parameter is declared with type (const char **). AC_DEFUN([OLDICONVTEST_SRC], [ AC_LANG_PROGRAM([[ #include extern size_t iconv(iconv_t cd, char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft); ]], [])]) GIT_STASH_FLAGS($ICONVDIR) AC_MSG_CHECKING([for old iconv()]) AC_COMPILE_IFELSE([OLDICONVTEST_SRC], [AC_MSG_RESULT([no])], [AC_MSG_RESULT([yes]) AC_DEFINE(HAVE_OLD_ICONV, 1) OLD_ICONV=UnfortunatelyYes]) GIT_UNSTASH_FLAGS($ICONVDIR) GIT_CONF_SUBST([OLD_ICONV]) # # Define ICONV_OMITS_BOM if you are on a system which # iconv omits bom for utf-{16,32} if test -z "$NO_ICONV"; then AC_CACHE_CHECK([whether iconv omits bom for utf-16 and utf-32], [ac_cv_iconv_omits_bom], [ old_LIBS="$LIBS" if test -n "$NEEDS_LIBICONV"; then LIBS="$LIBS -liconv" fi AC_RUN_IFELSE( [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT #include #ifdef HAVE_OLD_ICONV typedef const char *iconv_ibp; #else typedef char *iconv_ibp; #endif ], [[ int v; iconv_t conv; char in[] = "a"; iconv_ibp pin = in; char out[20] = ""; char *pout = out; size_t isz = sizeof in; size_t osz = sizeof out; conv = iconv_open("UTF-16", "UTF-8"); iconv(conv, &pin, &isz, &pout, &osz); iconv_close(conv); v = (unsigned char)(out[0]) + (unsigned char)(out[1]); return v != 0xfe + 0xff; ]])], [ac_cv_iconv_omits_bom=no], [ac_cv_iconv_omits_bom=yes]) LIBS="$old_LIBS" ]) if test "x$ac_cv_iconv_omits_bom" = xyes; then ICONV_OMITS_BOM=Yes else ICONV_OMITS_BOM= fi GIT_CONF_SUBST([ICONV_OMITS_BOM]) fi ## Checks for typedefs, structures, and compiler characteristics. AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) # TYPE_SOCKLEN_T case $ac_cv_type_socklen_t in yes) SOCKLEN_T='';; *) SOCKLEN_T=$git_cv_socklen_t_equiv;; esac GIT_CONF_SUBST([SOCKLEN_T]) # # Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval. AC_CHECK_TYPES([struct itimerval], [NO_STRUCT_ITIMERVAL=], [NO_STRUCT_ITIMERVAL=UnfortunatelyYes], [#include ]) GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL]) # # Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists. # Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor # stat.st_mtimespec.tv_nsec exists. AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec]) AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec]) if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then USE_ST_TIMESPEC=YesPlease GIT_CONF_SUBST([USE_ST_TIMESPEC]) elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then NO_NSEC=YesPlease GIT_CONF_SUBST([NO_NSEC]) fi # # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks # d_type in struct dirent (latest Cygwin -- will be fixed soonish). AC_CHECK_MEMBER(struct dirent.d_type, [NO_D_TYPE_IN_DIRENT=], [NO_D_TYPE_IN_DIRENT=YesPlease], [#include ]) GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT]) # # Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd # in the C library. AC_CHECK_MEMBER(struct passwd.pw_gecos, [NO_GECOS_IN_PWENT=], [NO_GECOS_IN_PWENT=YesPlease], [#include ]) GIT_CONF_SUBST([NO_GECOS_IN_PWENT]) # # Define NO_SOCKADDR_STORAGE if your platform does not have struct # sockaddr_storage. AC_CHECK_TYPE(struct sockaddr_storage, [NO_SOCKADDR_STORAGE=], [NO_SOCKADDR_STORAGE=YesPlease],[ #include #include ]) GIT_CONF_SUBST([NO_SOCKADDR_STORAGE]) # # Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). AC_CHECK_TYPE([struct addrinfo],[ GIT_CHECK_FUNC([getaddrinfo], [NO_IPV6=], [NO_IPV6=YesPlease]) ],[NO_IPV6=YesPlease],[ #include #include #include ]) GIT_CONF_SUBST([NO_IPV6]) # # Define NO_REGEX if your C library lacks regex support with REG_STARTEND # feature. AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND], [ac_cv_c_regex_with_reg_startend], [ AC_EGREP_CPP(yippeeyeswehaveit, AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT #include ], [#ifdef REG_STARTEND yippeeyeswehaveit #endif ]), [ac_cv_c_regex_with_reg_startend=yes], [ac_cv_c_regex_with_reg_startend=no]) ]) if test $ac_cv_c_regex_with_reg_startend = yes; then NO_REGEX= else NO_REGEX=YesPlease fi GIT_CONF_SUBST([NO_REGEX]) # # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds # when attempting to read from an fopen'ed directory. AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], [ac_cv_fread_reads_directories], [ AC_RUN_IFELSE( [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[ FILE *f = fopen(".", "r"); return f != NULL;]])], [ac_cv_fread_reads_directories=no], [ac_cv_fread_reads_directories=yes]) ]) if test $ac_cv_fread_reads_directories = yes; then FREAD_READS_DIRECTORIES=UnfortunatelyYes else FREAD_READS_DIRECTORIES= fi GIT_CONF_SUBST([FREAD_READS_DIRECTORIES]) # # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() # or vsnprintf() return -1 instead of number of characters which would # have been written to the final string if enough space had been available. AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], [ac_cv_snprintf_returns_bogus], [ AC_RUN_IFELSE( [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT #include "stdarg.h" int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) { int ret; va_list ap; va_start(ap, format); ret = vsnprintf(str, maxsize, format, ap); va_end(ap); return ret; }], [[char buf[6]; if (test_vsnprintf(buf, 3, "%s", "12345") != 5 || strcmp(buf, "12")) return 1; if (snprintf(buf, 3, "%s", "12345") != 5 || strcmp(buf, "12")) return 1]])], [ac_cv_snprintf_returns_bogus=no], [ac_cv_snprintf_returns_bogus=yes]) ]) if test $ac_cv_snprintf_returns_bogus = yes; then SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes else SNPRINTF_RETURNS_BOGUS= fi GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS]) # # Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type # bits in mode values. AC_CACHE_CHECK([whether the platform uses typical file type bits], [ac_cv_sane_mode_bits], [ AC_EGREP_CPP(yippeeyeswehaveit, AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [#if S_IFMT == 0170000 && \ S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \ S_IFBLK == 0060000 && S_IFCHR == 0020000 && \ S_IFIFO == 0010000 && S_IFSOCK == 0140000 yippeeyeswehaveit #endif ]), [ac_cv_sane_mode_bits=yes], [ac_cv_sane_mode_bits=no]) ]) if test $ac_cv_sane_mode_bits = yes; then NEEDS_MODE_TRANSLATION= else NEEDS_MODE_TRANSLATION=UnfortunatelyYes fi GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION]) ## Checks for library functions. ## (in default C library and libraries checked by AC_CHECK_LIB) AC_MSG_NOTICE([CHECKS for library functions]) # # Define NO_LIBGEN_H if you don't have libgen.h. AC_CHECK_HEADER([libgen.h], [NO_LIBGEN_H=], [NO_LIBGEN_H=YesPlease]) GIT_CONF_SUBST([NO_LIBGEN_H]) # # Define HAVE_PATHS_H if you have paths.h. AC_CHECK_HEADER([paths.h], [HAVE_PATHS_H=YesPlease], [HAVE_PATHS_H=]) GIT_CONF_SUBST([HAVE_PATHS_H]) # # Define HAVE_LIBCHARSET_H if have libcharset.h AC_CHECK_HEADER([libcharset.h], [HAVE_LIBCHARSET_H=YesPlease], [HAVE_LIBCHARSET_H=]) GIT_CONF_SUBST([HAVE_LIBCHARSET_H]) # # Define HAVE_STRINGS_H if you have strings.h AC_CHECK_HEADER([strings.h], [HAVE_STRINGS_H=YesPlease], [HAVE_STRINGS_H=]) GIT_CONF_SUBST([HAVE_STRINGS_H]) # Define CHARSET_LIB if libiconv does not export the locale_charset symbol # and libcharset does CHARSET_LIB= AC_CHECK_LIB([iconv], [locale_charset], [CHARSET_LIB=-liconv], [AC_CHECK_LIB([charset], [locale_charset], [CHARSET_LIB=-lcharset])]) GIT_CONF_SUBST([CHARSET_LIB]) # # Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available. GIT_CHECK_FUNC(clock_gettime, [HAVE_CLOCK_GETTIME=YesPlease], [HAVE_CLOCK_GETTIME=]) GIT_CONF_SUBST([HAVE_CLOCK_GETTIME]) AC_DEFUN([CLOCK_MONOTONIC_SRC], [ AC_LANG_PROGRAM([[ #include clockid_t id = CLOCK_MONOTONIC; ]])]) # # Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available. AC_MSG_CHECKING([for CLOCK_MONOTONIC]) AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC], [AC_MSG_RESULT([yes]) HAVE_CLOCK_MONOTONIC=YesPlease], [AC_MSG_RESULT([no]) HAVE_CLOCK_MONOTONIC=]) GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC]) # # Define HAVE_SYNC_FILE_RANGE=YesPlease if sync_file_range is available. GIT_CHECK_FUNC(sync_file_range, [HAVE_SYNC_FILE_RANGE=YesPlease], [HAVE_SYNC_FILE_RANGE]) GIT_CONF_SUBST([HAVE_SYNC_FILE_RANGE]) # # Define NO_SETITIMER if you don't have setitimer. GIT_CHECK_FUNC(setitimer, [NO_SETITIMER=], [NO_SETITIMER=YesPlease]) GIT_CONF_SUBST([NO_SETITIMER]) # # Define NO_STRCASESTR if you don't have strcasestr. GIT_CHECK_FUNC(strcasestr, [NO_STRCASESTR=], [NO_STRCASESTR=YesPlease]) GIT_CONF_SUBST([NO_STRCASESTR]) # # Define NO_MEMMEM if you don't have memmem. GIT_CHECK_FUNC(memmem, [NO_MEMMEM=], [NO_MEMMEM=YesPlease]) GIT_CONF_SUBST([NO_MEMMEM]) # # Define NO_STRLCPY if you don't have strlcpy. GIT_CHECK_FUNC(strlcpy, [NO_STRLCPY=], [NO_STRLCPY=YesPlease]) GIT_CONF_SUBST([NO_STRLCPY]) # # Define NO_UINTMAX_T if your platform does not have uintmax_t AC_CHECK_TYPE(uintmax_t, [NO_UINTMAX_T=], [NO_UINTMAX_T=YesPlease],[ #include ]) GIT_CONF_SUBST([NO_UINTMAX_T]) # # Define NO_STRTOUMAX if you don't have strtoumax in the C library. GIT_CHECK_FUNC(strtoumax, [NO_STRTOUMAX=], [NO_STRTOUMAX=YesPlease]) GIT_CONF_SUBST([NO_STRTOUMAX]) # # Define NO_SETENV if you don't have setenv in the C library. GIT_CHECK_FUNC(setenv, [NO_SETENV=], [NO_SETENV=YesPlease]) GIT_CONF_SUBST([NO_SETENV]) # # Define NO_UNSETENV if you don't have unsetenv in the C library. GIT_CHECK_FUNC(unsetenv, [NO_UNSETENV=], [NO_UNSETENV=YesPlease]) GIT_CONF_SUBST([NO_UNSETENV]) # # Define NO_MKDTEMP if you don't have mkdtemp in the C library. GIT_CHECK_FUNC(mkdtemp, [NO_MKDTEMP=], [NO_MKDTEMP=YesPlease]) GIT_CONF_SUBST([NO_MKDTEMP]) # # Define NO_INITGROUPS if you don't have initgroups in the C library. GIT_CHECK_FUNC(initgroups, [NO_INITGROUPS=], [NO_INITGROUPS=YesPlease]) GIT_CONF_SUBST([NO_INITGROUPS]) # # Define HAVE_GETDELIM if you have getdelim in the C library. GIT_CHECK_FUNC(getdelim, [HAVE_GETDELIM=YesPlease], [HAVE_GETDELIM=]) GIT_CONF_SUBST([HAVE_GETDELIM]) # # # Define NO_MMAP if you want to avoid mmap. # # Define NO_ICONV if your libc does not properly support iconv. AC_DEFUN([BSD_SYSCTL_SRC], [ AC_LANG_PROGRAM([[ #include #include #include ]],[[ int val, mib[2]; size_t len; mib[0] = CTL_HW; mib[1] = 1; len = sizeof(val); return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0; ]])]) # # Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available. AC_MSG_CHECKING([for BSD sysctl]) AC_COMPILE_IFELSE([BSD_SYSCTL_SRC], [AC_MSG_RESULT([yes]) HAVE_BSD_SYSCTL=YesPlease], [AC_MSG_RESULT([no]) HAVE_BSD_SYSCTL=]) GIT_CONF_SUBST([HAVE_BSD_SYSCTL]) ## Other checks. # Define USE_PIC if you need the main git objects to be built with -fPIC # in order to build and link perl/Git.so. x86-64 seems to need this. # # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link. # Enable it on Windows. By default, symrefs are still used. # # Define NO_PTHREADS if we do not have pthreads. # # Define PTHREAD_LIBS to the linker flag used for Pthread support. AC_DEFUN([PTHREADTEST_SRC], [ AC_LANG_PROGRAM([[ #include static void *noop(void *ignore) { return ignore; } ]], [[ pthread_mutex_t test_mutex; pthread_key_t test_key; pthread_t th; int retcode = 0; void *ret = (void *)0; retcode |= pthread_key_create(&test_key, (void *)0); retcode |= pthread_mutex_init(&test_mutex,(void *)0); retcode |= pthread_mutex_lock(&test_mutex); retcode |= pthread_mutex_unlock(&test_mutex); retcode |= pthread_create(&th, ret, noop, ret); retcode |= pthread_join(th, &ret); return retcode; ]])]) dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM( dnl [[#include ]], dnl [[pthread_mutex_t test_mutex;]] dnl )]) NO_PTHREADS=UnfortunatelyYes PTHREAD_LIBS= if test -n "$USER_NOPTHREAD"; then AC_MSG_NOTICE([Skipping POSIX Threads at user request.]) # handle these separately since PTHREAD_CFLAGS could be '-lpthreads # -D_REENTRANT' or some such. elif test -z "$PTHREAD_CFLAGS"; then threads_found=no # Attempt to compile and link some code using pthreads to determine # required linker flags. The order is somewhat important here: We # first try it without any extra flags, to catch systems where # pthreads are part of the C library, then go on testing various other # flags. We do so to avoid false positives. For example, on Mac OS X # pthreads are part of the C library; moreover, the compiler allows us # to add "-mt" to the CFLAGS (although it will do nothing except # trigger a warning about an unused flag). Hence if we checked for # "-mt" before "" we would end up picking it. But unfortunately this # would then trigger compiler warnings on every single file we compile. for opt in "" -mt -pthread -lpthread; do old_CFLAGS="$CFLAGS" old_LIBS="$LIBS" case "$opt" in -l*) LIBS="$opt $LIBS" ;; *) CFLAGS="$opt $CFLAGS" ;; esac AC_MSG_CHECKING([for POSIX Threads with '$opt']) AC_LINK_IFELSE([PTHREADTEST_SRC], [AC_MSG_RESULT([yes]) NO_PTHREADS= PTHREAD_LIBS="$opt" PTHREAD_CFLAGS="$opt" threads_found=yes break ], [AC_MSG_RESULT([no])]) CFLAGS="$old_CFLAGS" LIBS="$old_LIBS" done if test $threads_found != yes; then AC_CHECK_LIB([pthread], [pthread_create], [PTHREAD_LIBS="-lpthread"], [NO_PTHREADS=UnfortunatelyYes]) fi else old_CFLAGS="$CFLAGS" CFLAGS="$PTHREAD_CFLAGS $CFLAGS" AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS']) AC_LINK_IFELSE([PTHREADTEST_SRC], [AC_MSG_RESULT([yes]) NO_PTHREADS= PTHREAD_LIBS="$PTHREAD_CFLAGS" ], [AC_MSG_RESULT([no])]) CFLAGS="$old_CFLAGS" fi CFLAGS="$old_CFLAGS" GIT_CONF_SUBST([PTHREAD_CFLAGS]) GIT_CONF_SUBST([PTHREAD_LIBS]) GIT_CONF_SUBST([NO_PTHREADS]) ## Output files AC_CONFIG_FILES(["${config_file}":"${config_in}"]) AC_OUTPUT