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cd1547d204
git/configure.ac
Junio C Hamano cd1547d204 Merge branch 'ab/compat-regex' 
* ab/compat-regex:
  Fix compat/regex ANSIfication on MinGW
  autoconf: regex library detection typofix
  autoconf: don't use platform regex if it lacks REG_STARTEND
  t/t7008-grep-binary.sh: un-TODO a test that needs REG_STARTEND
  compat/regex: get rid of old-style definition
  compat/regex: define out variables only used under RE_ENABLE_I18N
  Change regerror() declaration from K&R style to ANSI C (C89)
  compat/regex: get the gawk regex engine to compile within git
  compat/regex: use the regex engine from gawk for compat

Conflicts:
	compat/regex/regex.c
2010-09-03 09:43:45 -07:00

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)
AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
AC_CONFIG_SRCDIR([git.c])
config_file=config.mak.autogen
config_append=config.mak.append
config_in=config.mak.in
echo "# ${config_append}. Generated by configure." > "${config_append}"
## Definitions of macros
# GIT_CONF_APPEND_LINE(LINE)
# --------------------------
# Append LINE to file ${config_append}
AC_DEFUN([GIT_CONF_APPEND_LINE],
[echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
#
# 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_ARG_SET_PATH
#
# 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],
[PROGRAM=m4_toupper($1); \
if test "$withval" = "no"; then \
if test -n "$2"; then \
m4_toupper($1)_PATH=$withval; \
AC_MSG_NOTICE([Disabling use of ${PROGRAM}]); \
GIT_CONF_APPEND_LINE(NO_${PROGRAM}=YesPlease); \
GIT_CONF_APPEND_LINE(${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 \
m4_toupper($1)_PATH=$withval; \
AC_MSG_NOTICE([Setting m4_toupper($1)_PATH to $withval]); \
GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
fi; \
fi; \
]) # GIT_CONF_APPEND_PATH
#
# 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],
[PACKAGE=m4_toupper($1); \
if test "$withval" = "no"; then \
m4_toupper(NO_$1)=YesPlease; \
elif test "$withval" = "yes"; then \
m4_toupper(NO_$1)=; \
else \
m4_toupper(NO_$1)=; \
m4_toupper($1)DIR=$withval; \
AC_MSG_NOTICE([Setting m4_toupper($1)DIR to $withval]); \
GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
fi \
])# GIT_PARSE_WITH
#
# 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_APPEND_LINE($2=$withval); \
fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
dnl
dnl GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
dnl -----------------------------------------
dnl Similar to AC_CHECK_FUNC, but on systems that do not generate
dnl warnings for missing prototypes (e.g. FreeBSD when compiling without
dnl -Wall), it does not work. By looking for function definition in
dnl libraries, this problem can be worked around.
AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
AC_SEARCH_LIBS([$1],,
[$2],[$3])
],[$3])])
dnl
dnl GIT_STASH_FLAGS(BASEPATH_VAR)
dnl -----------------------------
dnl Allow for easy stashing of LDFLAGS and CPPFLAGS before running
dnl 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="$old_LDFLAGS"
fi
])
## Site configuration related to programs (before tests)
## --with-PACKAGE[=ARG] and --without-PACKAGE
#
# Set lib to alternative name of lib directory (e.g. lib64)
AC_ARG_WITH([lib],
[AS_HELP_STRING([--with-lib=ARG],
[ARG specifies alternative name for lib directory])],
[if test "$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 '$lib']); \
GIT_CONF_APPEND_LINE(lib=$withval); \
fi; \
],[])
if test -z "$lib"; then
AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
lib=lib
fi
AC_ARG_ENABLE([pthreads],
[AS_HELP_STRING([--enable-pthreads=FLAGS],
[FLAGS is the value to pass to the compiler to enable POSIX Threads.]
[The default if FLAGS is not specified is to try first -pthread]
[and then -lpthread.]
[--without-pthreads will disable threading.])],
[
if test "x$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 '$JSMIN' to enable JavaScript minifying])
GIT_CONF_APPEND_LINE(JSMIN=$enableval);
])
# 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_APPEND_LINE(CSSMIN=$enableval);
])
## 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.
# This also implies BLK_SHA1.
#
# 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 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 interpretted
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 $ac_cv_c_inline in
inline | yes | no) ;;
*) AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
esac
# 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
AC_SUBST(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
AC_SUBST(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
AC_SUBST(CC_LD_DYNPATH, [-rpath])
else
AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
fi
fi
fi
#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 -z "$NO_TCLTK"; then
if test "$with_tcltk" = ""; then
# No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
TCLTK_PATH=wish
AC_SUBST(TCLTK_PATH)
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"
AC_SUBST(TCLTK_PATH)
fi
fi
AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
if test -n "$ASCIIDOC"; then
AC_MSG_CHECKING([for asciidoc version])
asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
case "${asciidoc_version}" in
asciidoc' '8*)
ASCIIDOC8=YesPlease
AC_MSG_RESULT([${asciidoc_version} > 7])
;;
asciidoc' '7*)
ASCIIDOC8=
AC_MSG_RESULT([${asciidoc_version}])
;;
*)
ASCIIDOC8=
AC_MSG_RESULT([${asciidoc_version} (unknown)])
;;
esac
fi
AC_SUBST(ASCIIDOC8)
## 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($OPENSSLDIR)
AC_CHECK_LIB([crypto], [SHA1_Init],
[NEEDS_SSL_WITH_CRYPTO=],
[AC_CHECK_LIB([ssl], [SHA1_Init],
[NEEDS_SSL_WITH_CRYPTO=YesPlease],
[NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
GIT_UNSTASH_FLAGS($OPENSSLDIR)
AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
AC_SUBST(NO_OPENSSL)
#
# 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)
AC_SUBST(NO_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.
GIT_STASH_FLAGS($EXPATDIR)
AC_CHECK_LIB([expat], [XML_ParserCreate],
[NO_EXPAT=],
[NO_EXPAT=YesPlease])
GIT_UNSTASH_FLAGS($EXPATDIR)
AC_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], [
#include <iconv.h>
int main(void)
{
iconv_open("", "");
return 0;
}
])
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)
AC_SUBST(NEEDS_LIBICONV)
AC_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], [
#include <zlib.h>
int main(void)
{
deflateBound(0, 0);
return 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)
AC_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])
AC_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=
AC_SUBST(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_SUBST(NO_INET_NTOP)
AC_CHECK_FUNC([inet_ntop],
[],
[AC_CHECK_LIB([resolv], [inet_ntop],
[NEEDS_RESOLV=YesPlease],
[NO_INET_NTOP=YesPlease])
])
#
# 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_SUBST(NO_INET_PTON)
AC_CHECK_FUNC([inet_pton],
[],
[AC_CHECK_LIB([resolv], [inet_pton],
[NEEDS_RESOLV=YesPlease],
[NO_INET_PTON=YesPlease])
])
#
# 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])
])
AC_SUBST(NO_HSTRERROR)
#
# 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])
AC_SUBST(NEEDS_LIBGEN)
test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
## 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])
AC_SUBST(NO_SYS_SELECT_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], [[
#include <iconv.h>
extern size_t iconv(iconv_t cd,
char **inbuf, size_t *inbytesleft,
char **outbuf, size_t *outbytesleft);
int main(void)
{
return 0;
}
]])
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)
AC_SUBST(OLD_ICONV)
## Checks for typedefs, structures, and compiler characteristics.
AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
#
TYPE_SOCKLEN_T
case $ac_cv_type_socklen_t in
yes) ;;
*) AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
esac
# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
AC_CHECK_MEMBER(struct dirent.d_ino,
[NO_D_INO_IN_DIRENT=],
[NO_D_INO_IN_DIRENT=YesPlease],
[#include <dirent.h>])
AC_SUBST(NO_D_INO_IN_DIRENT)
#
# 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>])
AC_SUBST(NO_D_TYPE_IN_DIRENT)
#
# 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>
])
AC_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>
])
AC_SUBST(NO_IPV6)
#
# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
# do not support the 'size specifiers' introduced by C99, namely ll, hh,
# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
# some C compilers supported these specifiers prior to C99 as an extension.
AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
[ac_cv_c_c99_format],
[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
[[char buf[64];
if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
return 1;
else if (strcmp(buf, "12345"))
return 2;]])],
[ac_cv_c_c99_format=yes],
[ac_cv_c_c99_format=no])
])
if test $ac_cv_c_c99_format = no; then
NO_C99_FORMAT=YesPlease
else
NO_C99_FORMAT=
fi
AC_SUBST(NO_C99_FORMAT)
#
# Define NO_REGEX if you have no or inferior regex support in your C library.
AC_CACHE_CHECK([whether the platform regex can handle null bytes],
[ac_cv_c_excellent_regex], [
AC_EGREP_CPP(yippeeyeswehaveit,
AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
#include <regex.h>
],
[#ifdef REG_STARTEND
yippeeyeswehaveit
#endif
]),
[ac_cv_c_excellent_regex=yes],
[ac_cv_c_excellent_regex=no])
])
if test $ac_cv_c_excellent_regex = yes; then
NO_REGEX=
else
NO_REGEX=YesPlease
fi
AC_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],
[[char c;
FILE *f = fopen(".", "r");
return f && fread(&c, 1, 1, f)]])],
[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
AC_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
AC_SUBST(SNPRINTF_RETURNS_BOGUS)
## 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])
AC_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=])
AC_SUBST(HAVE_PATHS_H)
#
# Define NO_STRCASESTR if you don't have strcasestr.
GIT_CHECK_FUNC(strcasestr,
[NO_STRCASESTR=],
[NO_STRCASESTR=YesPlease])
AC_SUBST(NO_STRCASESTR)
#
# Define NO_STRTOK_R if you don't have strtok_r
GIT_CHECK_FUNC(strtok_r,
[NO_STRTOK_R=],
[NO_STRTOK_R=YesPlease])
AC_SUBST(NO_STRTOK_R)
#
# Define NO_MEMMEM if you don't have memmem.
GIT_CHECK_FUNC(memmem,
[NO_MEMMEM=],
[NO_MEMMEM=YesPlease])
AC_SUBST(NO_MEMMEM)
#
# Define NO_STRLCPY if you don't have strlcpy.
GIT_CHECK_FUNC(strlcpy,
[NO_STRLCPY=],
[NO_STRLCPY=YesPlease])
AC_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>
])
AC_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])
AC_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])
AC_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])
AC_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])
AC_SUBST(NO_MKDTEMP)
#
# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
GIT_CHECK_FUNC(mkstemps,
[NO_MKSTEMPS=],
[NO_MKSTEMPS=YesPlease])
AC_SUBST(NO_MKSTEMPS)
#
#
# Define NO_MMAP if you want to avoid mmap.
#
# Define NO_ICONV if your libc does not properly support iconv.
## 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], [
#include <pthread.h>
int main(void)
{
pthread_mutex_t test_mutex;
int retcode = 0;
retcode |= pthread_mutex_init(&test_mutex,(void *)0);
retcode |= pthread_mutex_lock(&test_mutex);
retcode |= pthread_mutex_unlock(&test_mutex);
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 "$PTHREAD_CFLAGS"; then
threads_found=no
for opt in -mt -pthread -lpthread; do
old_CFLAGS="$CFLAGS"
CFLAGS="$opt $CFLAGS"
AC_MSG_CHECKING([Checking for POSIX Threads with '$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"
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 $CFLAGS"
AC_MSG_CHECKING([Checking for POSIX Threads with '$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="$old_CFLAGS"
AC_SUBST(PTHREAD_CFLAGS)
AC_SUBST(PTHREAD_LIBS)
AC_SUBST(NO_PTHREADS)
## Output files
AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
AC_OUTPUT
## Cleanup
rm -f "${config_append}"
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