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Diffstat (limited to 'third_party/git/configure.ac')
| -rw-r--r-- | third_party/git/configure.ac | 1278 |
1 files changed, 1278 insertions, 0 deletions
diff --git a/third_party/git/configure.ac b/third_party/git/configure.ac new file mode 100644 index 0000000000..a43b476402 --- /dev/null +++ b/third_party/git/configure.ac @@ -0,0 +1,1278 @@ +# -*- 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. +AC_DEFUN([GIT_ARG_SET_PATH], + [AC_ARG_WITH([$1], + [AS_HELP_STRING([--with-$1=PATH], + [provide PATH to $1])], + [GIT_CONF_APPEND_PATH([$1], [$2])], + [])]) + +# GIT_CONF_APPEND_PATH(PROGRAM) +# ----------------------------- +# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH +# Used by GIT_ARG_SET_PATH(PROGRAM) +# Optional second argument allows setting NO_PROGRAM=YesPlease if +# --without-PROGRAM is used. +AC_DEFUN([GIT_CONF_APPEND_PATH], + [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl + if test "$withval" = "no"; then + if test -n "$2"; then + GIT_UC_PROGRAM[]_PATH=$withval + AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM]) + GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease]) + GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, []) + else + AC_MSG_ERROR([You cannot use git without $1]) + fi + else + if test "$withval" = "yes"; then + AC_MSG_WARN([You should provide path for --with-$1=PATH]) + else + GIT_UC_PROGRAM[]_PATH=$withval + AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval]) + GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval]) + fi + fi + m4_popdef([GIT_UC_PROGRAM])]) + +# GIT_PARSE_WITH(PACKAGE) +# ----------------------- +# For use in AC_ARG_WITH action-if-found, for packages default ON. +# * Set NO_PACKAGE=YesPlease for --without-PACKAGE +# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH +# * Unset NO_PACKAGE for --with-PACKAGE without ARG +AC_DEFUN([GIT_PARSE_WITH], + [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl + if test "$withval" = "no"; then + NO_[]GIT_UC_PACKAGE=YesPlease + elif test "$withval" = "yes"; then + NO_[]GIT_UC_PACKAGE= + else + NO_[]GIT_UC_PACKAGE= + GIT_UC_PACKAGE[]DIR=$withval + AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval]) + GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval]) + fi + m4_popdef([GIT_UC_PACKAGE])]) + +# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT) +# ----------------------------------------------------- +# Set VAR to the value specied by --with-WITHNAME. +# No verification of arguments is performed, but warnings are issued +# if either 'yes' or 'no' is specified. +# HELP_TEXT is presented when --help is called. +# This is a direct way to allow setting variables in the Makefile. +AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR], +[AC_ARG_WITH([$1], + [AS_HELP_STRING([--with-$1=VALUE], $3)], + if test -n "$withval"; then + if test "$withval" = "yes" -o "$withval" = "no"; then + AC_MSG_WARN([You likely do not want either 'yes' or 'no' as] + [a value for $1 ($2). Maybe you do...?]) + fi + AC_MSG_NOTICE([Setting $2 to $withval]) + GIT_CONF_SUBST([$2], [$withval]) + fi)])# GIT_PARSE_WITH_SET_MAKE_VAR + +# +# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE) +# ----------------------------------------- +# Similar to AC_CHECK_FUNC, but on systems that do not generate +# warnings for missing prototypes (e.g. FreeBSD when compiling without +# -Wall), it does not work. By looking for function definition in +# libraries, this problem can be worked around. +AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[ + AC_SEARCH_LIBS([$1],, + [$2],[$3]) +],[$3])]) + +# +# GIT_STASH_FLAGS(BASEPATH_VAR) +# ----------------------------- +# Allow for easy stashing of LDFLAGS and CPPFLAGS before running +# tests that may want to take user settings into account. +AC_DEFUN([GIT_STASH_FLAGS],[ +if test -n "$1"; then + old_CPPFLAGS="$CPPFLAGS" + old_LDFLAGS="$LDFLAGS" + CPPFLAGS="-I$1/include $CPPFLAGS" + LDFLAGS="-L$1/$lib $LDFLAGS" +fi +]) + +dnl +dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR) +dnl ----------------------------- +dnl Restore the stashed *FLAGS values. +AC_DEFUN([GIT_UNSTASH_FLAGS],[ +if test -n "$1"; then + CPPFLAGS="$old_CPPFLAGS" + LDFLAGS="$old_LDFLAGS" +fi +]) + +## Configure body starts here. + +AC_PREREQ(2.59) +AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org]) + +AC_CONFIG_SRCDIR([git.c]) + +config_file=config.mak.autogen +config_in=config.mak.in + +GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease]) + +# Directories holding "saner" versions of common or POSIX binaries. +AC_ARG_WITH([sane-tool-path], + [AS_HELP_STRING( + [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]], + [Directories to prepend to PATH in build system and generated scripts])], + [if test "$withval" = "no"; then + withval='' + else + AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval']) + fi + GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])], + [# If the "--with-sane-tool-path" option was not given, don't touch + # SANE_TOOL_PATH here, but let defaults in Makefile take care of it. + # This should minimize spurious differences in the behaviour of the + # Git build system when configure is used w.r.t. when it is not. + :]) + +## Site configuration related to programs (before tests) +## --with-PACKAGE[=ARG] and --without-PACKAGE +# +# Set lib to alternative name of lib directory (e.g. lib64) +AC_ARG_WITH([lib], + [AS_HELP_STRING([--with-lib=ARG], + [ARG specifies alternative name for lib directory])], + [if test "$withval" = "no" || test "$withval" = "yes"; then + AC_MSG_WARN([You should provide name for --with-lib=ARG]) + else + lib=$withval + AC_MSG_NOTICE([Setting lib to '$lib']) + GIT_CONF_SUBST([lib]) + fi]) + +if test -z "$lib"; then + AC_MSG_NOTICE([Setting lib to 'lib' (the default)]) + lib=lib +fi + +AC_ARG_ENABLE([pthreads], + [AS_HELP_STRING([--enable-pthreads=FLAGS], + [FLAGS is the value to pass to the compiler to enable POSIX Threads.] + [The default if FLAGS is not specified is to try first -pthread] + [and then -lpthread.] + [--disable-pthreads will disable threading.])], +[ +if test "x$enableval" = "xyes"; then + AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads]) +elif test "x$enableval" != "xno"; then + PTHREAD_CFLAGS=$enableval + AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads]) +else + AC_MSG_NOTICE([POSIX Threads will be disabled.]) + NO_PTHREADS=YesPlease + USER_NOPTHREAD=1 +fi], +[ + AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.]) +]) + +# Define option to enable JavaScript minification +AC_ARG_ENABLE([jsmin], +[AS_HELP_STRING([--enable-jsmin=PATH], + [PATH is the name of a JavaScript minifier or the absolute path to one.])], +[ + JSMIN=$enableval; + AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying]) + GIT_CONF_SUBST([JSMIN]) +]) + +# Define option to enable CSS minification +AC_ARG_ENABLE([cssmin], +[AS_HELP_STRING([--enable-cssmin=PATH], + [PATH is the name of a CSS minifier or the absolute path to one.])], +[ + CSSMIN=$enableval; + AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying]) + GIT_CONF_SUBST([CSSMIN]) +]) + +## Site configuration (override autodetection) +## --with-PACKAGE[=ARG] and --without-PACKAGE +AC_MSG_NOTICE([CHECKS for site configuration]) +# +# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability +# tests. These tests take up a significant amount of the total test time +# but are not needed unless you plan to talk to SVN repos. +# +# Define PPC_SHA1 environment variable when running make to make use of +# a bundled SHA1 routine optimized for PowerPC. +# +# Define NO_OPENSSL environment variable if you do not have OpenSSL. +# +# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in +# /foo/bar/include and /foo/bar/lib directories. +AC_ARG_WITH(openssl, +AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)]) +AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]), +GIT_PARSE_WITH([openssl])) + +# Define USE_LIBPCRE if you have and want to use libpcre. Various +# commands such as log and grep offer runtime options to use +# Perl-compatible regular expressions instead of standard or extended +# POSIX regular expressions. +# +# USE_LIBPCRE is a synonym for USE_LIBPCRE2, define USE_LIBPCRE1 +# instead if you'd like to use the legacy version 1 of the PCRE +# library. Support for version 1 will likely be removed in some future +# release of Git, as upstream has all but abandoned it. +# +# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in +# /foo/bar/include and /foo/bar/lib directories. +# +AC_ARG_WITH(libpcre, +AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]), + if test "$withval" = "no"; then + USE_LIBPCRE2= + elif test "$withval" = "yes"; then + USE_LIBPCRE2=YesPlease + else + USE_LIBPCRE2=YesPlease + LIBPCREDIR=$withval + AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) + dnl USE_LIBPCRE2 can still be modified below, so don't substitute + dnl it yet. + GIT_CONF_SUBST([LIBPCREDIR]) + fi) + +AC_ARG_WITH(libpcre1, +AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)]) +AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), + if test "$withval" = "no"; then + USE_LIBPCRE1= + elif test "$withval" = "yes"; then + USE_LIBPCRE1=YesPlease + else + USE_LIBPCRE1=YesPlease + LIBPCREDIR=$withval + AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) + dnl USE_LIBPCRE1 can still be modified below, so don't substitute + dnl it yet. + GIT_CONF_SUBST([LIBPCREDIR]) + fi) + +AC_ARG_WITH(libpcre2, +AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)]) +AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), + if test -n "$USE_LIBPCRE2"; then + AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!]) + fi + + if test -n "$USE_LIBPCRE1"; then + AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!]) + fi + + if test "$withval" = "no"; then + USE_LIBPCRE2= + elif test "$withval" = "yes"; then + USE_LIBPCRE2=YesPlease + else + USE_LIBPCRE2=YesPlease + LIBPCREDIR=$withval + AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) + dnl USE_LIBPCRE2 can still be modified below, so don't substitute + dnl it yet. + GIT_CONF_SUBST([LIBPCREDIR]) + fi) +# +# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header. +AC_FUNC_ALLOCA +case $ac_cv_working_alloca_h in + yes) HAVE_ALLOCA_H=YesPlease;; + *) HAVE_ALLOCA_H='';; +esac +GIT_CONF_SUBST([HAVE_ALLOCA_H]) +# +# Define NO_CURL if you do not have curl installed. git-http-pull and +# git-http-push are not built, and you cannot use http:// and https:// +# transports. +# +# Define CURLDIR=/foo/bar if your curl header and library files are in +# /foo/bar/include and /foo/bar/lib directories. +AC_ARG_WITH(curl, +AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)]) +AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]), +GIT_PARSE_WITH(curl)) +# +# 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. +# +# Define EXPATDIR=/foo/bar if your expat header and library files are in +# /foo/bar/include and /foo/bar/lib directories. +AC_ARG_WITH(expat, +AS_HELP_STRING([--with-expat], +[support git-push using http:// and https:// transports via WebDAV (default is YES)]) +AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]), +GIT_PARSE_WITH(expat)) +# +# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink +# installed in /sw, but don't want GIT to link against any libraries +# installed there. If defined you may specify your own (or Fink's) +# include directories and library directories by defining CFLAGS +# and LDFLAGS appropriately. +# +# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X, +# have DarwinPorts installed in /opt/local, but don't want GIT to +# link against any libraries installed there. If defined you may +# specify your own (or DarwinPort's) include directories and +# library directories by defining CFLAGS and LDFLAGS appropriately. +# +# Define NO_MMAP if you want to avoid mmap. +# +# Define NO_ICONV if your libc does not properly support iconv. +AC_ARG_WITH(iconv, +AS_HELP_STRING([--without-iconv], +[if your architecture doesn't properly support iconv]) +AS_HELP_STRING([--with-iconv=PATH], +[PATH is prefix for libiconv library and headers]) +AS_HELP_STRING([], +[used only if you need linking with libiconv]), +GIT_PARSE_WITH(iconv)) + +## --enable-FEATURE[=ARG] and --disable-FEATURE +# +# Define USE_NSEC below if you want git to care about sub-second file mtimes +# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and +# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely +# randomly break unless your underlying filesystem supports those sub-second +# times (my ext3 doesn't). +# +# Define USE_STDEV below if you want git to care about the underlying device +# change being considered an inode change from the update-index perspective. + +# +# Allow user to set ETC_GITCONFIG variable +GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG, + Use VALUE instead of /etc/gitconfig as the + global git configuration file. + If VALUE is not fully qualified it will be interpreted + as a path relative to the computed prefix at runtime.) + +# +# Allow user to set ETC_GITATTRIBUTES variable +GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES, + Use VALUE instead of /etc/gitattributes as the + global git attributes file. + If VALUE is not fully qualified it will be interpreted + as a path relative to the computed prefix at runtime.) + +# +# Allow user to set the default pager +GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER, + Use VALUE as the fall-back pager instead of 'less'. + This is used by things like 'git log' when the user + does not specify a pager to use through alternate + methods. eg: /usr/bin/pager) +# +# Allow user to set the default editor +GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR, + Use VALUE as the fall-back editor instead of 'vi'. + This is used by things like 'git commit' when the user + does not specify a preferred editor through other + methods. eg: /usr/bin/editor) + +# +# Define SHELL_PATH to provide path to shell. +GIT_ARG_SET_PATH(shell) +# +# Define PERL_PATH to provide path to Perl. +GIT_ARG_SET_PATH(perl) +# +# Define PYTHON_PATH to provide path to Python. +GIT_ARG_SET_PATH(python, allow-without) +# +# Define ZLIB_PATH to provide path to zlib. +GIT_ARG_SET_PATH(zlib) +# +# Declare the with-tcltk/without-tcltk options. +AC_ARG_WITH(tcltk, +AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)]) +AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.]) +AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if]) +AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]), +GIT_PARSE_WITH(tcltk)) +# + + +## Checks for programs. +AC_MSG_NOTICE([CHECKS for programs]) +# +AC_PROG_CC([cc gcc]) +AC_C_INLINE +case $ac_cv_c_inline in + inline | yes | no) INLINE='';; + *) INLINE=$ac_cv_c_inline ;; +esac +GIT_CONF_SUBST([INLINE]) + +# which switch to pass runtime path to dynamic libraries to the linker +AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -R /" + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no]) + LDFLAGS="${SAVE_LDFLAGS}" +]) +if test "$git_cv_ld_dashr" = "yes"; then + CC_LD_DYNPATH=-R +else + AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no]) + LDFLAGS="${SAVE_LDFLAGS}" + ]) + if test "$git_cv_ld_wl_rpath" = "yes"; then + CC_LD_DYNPATH=-Wl,-rpath, + else + AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -rpath /" + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no]) + LDFLAGS="${SAVE_LDFLAGS}" + ]) + if test "$git_cv_ld_rpath" = "yes"; then + CC_LD_DYNPATH=-rpath + else + AC_CACHE_CHECK([if linker supports -Wl,+b,], git_cv_ld_wl_b, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -Wl,+b,/" + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_b=yes], [git_cv_ld_wl_b=no]) + LDFLAGS="${SAVE_LDFLAGS}" + ]) + if test "$git_cv_ld_wl_b" = "yes"; then + CC_LD_DYNPATH=-Wl,+b, + else + CC_LD_DYNPATH= + AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) + fi + fi + fi +fi +GIT_CONF_SUBST([CC_LD_DYNPATH]) +#AC_PROG_INSTALL # needs install-sh or install.sh in sources +AC_CHECK_TOOLS(AR, [gar ar], :) +AC_CHECK_PROGS(TAR, [gtar tar]) +AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff]) +# TCLTK_PATH will be set to some value if we want Tcl/Tk +# or will be empty otherwise. +if test -n "$NO_TCLTK"; then + TCLTK_PATH= +else + if test "$with_tcltk" = ""; then + # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'. + TCLTK_PATH=wish + elif test "$with_tcltk" = "yes"; then + # Tcl/Tk check requested. + AC_CHECK_PROGS(TCLTK_PATH, [wish], ) + else + AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk]) + TCLTK_PATH="$with_tcltk" + fi +fi +GIT_CONF_SUBST([TCLTK_PATH]) +AC_CHECK_PROGS(ASCIIDOC, [asciidoc]) +if test -n "$ASCIIDOC"; then + AC_MSG_CHECKING([for asciidoc version]) + asciidoc_version=`$ASCIIDOC --version 2>/dev/null` + case "${asciidoc_version}" in + asciidoc' '8*) + AC_MSG_RESULT([${asciidoc_version}]) + ;; + *) + AC_MSG_RESULT([${asciidoc_version} (unknown)]) + ;; + esac +fi + +if grep -a ascii configure.ac >/dev/null; then + AC_MSG_RESULT([Using 'grep -a' for sane_grep]) + SANE_TEXT_GREP=-a +else + SANE_TEXT_GREP= +fi +GIT_CONF_SUBST([SANE_TEXT_GREP]) + +## Checks for libraries. +AC_MSG_NOTICE([CHECKS for libraries]) +# +# Define NO_OPENSSL environment variable if you do not have OpenSSL. +# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin). + +GIT_STASH_FLAGS($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($OPENSSLDIR) + +GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO]) +GIT_CONF_SUBST([NO_OPENSSL]) + +# +# Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set +# above. +# + +if test -n "$USE_LIBPCRE1"; then + +GIT_STASH_FLAGS($LIBPCREDIR) + +AC_CHECK_LIB([pcre], [pcre_version], +[USE_LIBPCRE1=YesPlease], +[USE_LIBPCRE1=]) + +GIT_UNSTASH_FLAGS($LIBPCREDIR) + +GIT_CONF_SUBST([USE_LIBPCRE1]) + +fi + + +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($ICONVDIR) + +AC_DEFUN([ICONVTEST_SRC], +[AC_LANG_PROGRAM([#include <iconv.h>], + [iconv_open("", "");])]) + +if test -n "$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 <zlib.h>], + [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 <libintl.h> +]],[[ +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="$LIBS -lintl" +fi + +## Checks for header files. +AC_MSG_NOTICE([CHECKS for header files]) +# +# Define NO_SYS_SELECT_H if you don't have sys/select.h. +AC_CHECK_HEADER([sys/select.h], +[NO_SYS_SELECT_H=], +[NO_SYS_SELECT_H=UnfortunatelyYes]) +GIT_CONF_SUBST([NO_SYS_SELECT_H]) +# +# Define NO_POLL_H if you don't have poll.h +AC_CHECK_HEADER([poll.h], +[NO_POLL_H=], +[NO_POLL_H=UnfortunatelyYes]) +GIT_CONF_SUBST([NO_POLL_H]) +# +# Define NO_SYS_POLL_H if you don't have sys/poll.h +AC_CHECK_HEADER([sys/poll.h], +[NO_SYS_POLL_H=], +[NO_SYS_POLL_H=UnfortunatelyYes]) +GIT_CONF_SUBST([NO_SYS_POLL_H]) +# +# Define NO_INTTYPES_H if you don't have inttypes.h +AC_CHECK_HEADER([inttypes.h], +[NO_INTTYPES_H=], +[NO_INTTYPES_H=UnfortunatelyYes]) +GIT_CONF_SUBST([NO_INTTYPES_H]) +# +# Define OLD_ICONV if your library has an old iconv(), where the second +# (input buffer pointer) parameter is declared with type (const char **). +AC_DEFUN([OLDICONVTEST_SRC], [ +AC_LANG_PROGRAM([[ +#include <iconv.h> + +extern size_t iconv(iconv_t cd, + char **inbuf, size_t *inbytesleft, + char **outbuf, size_t *outbytesleft); +]], [])]) + +GIT_STASH_FLAGS($ICONVDIR) + +AC_MSG_CHECKING([for old iconv()]) +AC_COMPILE_IFELSE([OLDICONVTEST_SRC], + [AC_MSG_RESULT([no])], + [AC_MSG_RESULT([yes]) + OLD_ICONV=UnfortunatelyYes]) + +GIT_UNSTASH_FLAGS($ICONVDIR) + +GIT_CONF_SUBST([OLD_ICONV]) + +## 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 <sys/time.h>]) +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 <dirent.h>]) +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 <pwd.h>]) +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 <sys/types.h> +#include <sys/socket.h> +]) +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 <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> +]) +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 <regex.h> +], +[#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 <time.h> +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 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 <inttypes.h> +]) +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 <stddef.h> +#include <sys/types.h> +#include <sys/sysctl.h> +]],[[ +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 <pthread.h> +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 <pthread.h>]], +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 |