dnl Process this file with autoconf to produce a configure script.

dnl Autoconfiscation for Subversion

dnl General Setup -----------------------

dnl Ensure that subversion is configured with autoconf 2.50 or newer
dnl Don't even think about removing this check!
AC_PREREQ(2.50)

dnl First line is *required*;  sanity-checks that the our src dir exists.
AC_INIT(subversion/include/svn_types.h)
AC_CONFIG_AUX_DIR(ac-helpers)

abs_srcdir="`cd $srcdir && pwd`"
abs_builddir="`pwd`"

dnl ### should we ever bother with the system install?
dnl use abs_srcdir. sometimes during installation, libtool will relink the
dnl library. when it does this, it does a "cd", so a relative use of
dnl install-sh will not work.
INSTALL="$abs_srcdir/ac-helpers/install-sh -c"
AC_SUBST(INSTALL)

MKDIR="$INSTALL -d"
AC_SUBST(MKDIR)

dnl Grab our own macros
sinclude(ac-helpers/berkeley-db.m4)
sinclude(ac-helpers/svn-apache.m4)
sinclude(ac-helpers/svn-macros.m4)
sinclude(ac-helpers/neon.m4)
sinclude(ac-helpers/find_apr.m4)
sinclude(ac-helpers/apr.m4)
sinclude(ac-helpers/find_apu.m4)
sinclude(ac-helpers/aprutil.m4)

dnl Grab the libtool macros
sinclude(ac-helpers/libtool.m4)

dnl Generate config.nice early (before the args are munged)
SVN_CONFIG_NICE(config.nice)

dnl AC_CONFIG_HEADER causes `autoheader' to produce svn_private_config.h.in for us.
dnl   (We can add custom defines by creating ./acconfig.h if we wish.)
AC_CONFIG_HEADER(svn_private_config.h)

dnl Todo: we're English-only now, but GNU Gettext eventually?
dnl Set of available languages.
dnl ALL_LINGUAS="de fr es ko nl no pl pt sl sv"
dnl                 I volunteer for this ^^ translation :-)  -xbc

dnl Sub-package configuration ---------------------

dnl Possibly reconfigure packages in subdirectories
AC_ARG_ENABLE(subdir-config,
  [  --disable-subdir-config  do not reconfigure packages in subdirectories ],
  [
      if test "$enableval" = "yes" ; then
        do_subdir_config="yes"
      fi
  ], 
  [
      do_subdir_config=yes
  ])

dnl the extra bits to include into our build process
SVN_EXTRA_INCLUDES='-I$(top_srcdir)/subversion/include -I$(top_builddir)'
SVN_EXTRA_LIBS=

SVN_SUBDIRS=

AC_SUBST(SVN_EXTRA_INCLUDES)
AC_SUBST(SVN_EXTRA_LIBS)
AC_SUBST(SVN_SUBDIRS)

dnl Configure APR, and local Berkeley DB if any --------------------------


SVN_LIB_APR
SVN_LIB_APRUTIL

if test -d $abs_srcdir/db ; then
    # Note: We have to configure and build a db subdirectory even if
    # some other berkeley db is configured via --with-berkeley-db
    ### why do we "have to" ?? -gjs
    SVN_SUBDIR_CONFIG(db/dist)
    SVN_SUBDIRS="$SVN_SUBDIRS db/dist"
fi

dnl Set include dir and module library lists for Makefiles -----------------

dnl Expat
SVN_EXPAT_INCLUDES='-I$(top_srcdir)/expat-lite'
AC_SUBST(SVN_EXPAT_INCLUDES)

dnl Check for programs ---------------------

dnl Look for a C compiler
AC_PROG_CC

dnl See if 'ln -s' works
AC_PROG_LN_S

dnl Check for libtool -- we'll definitely need it for all our shared libs!
echo "configuring libtool now"
AC_PROG_LIBTOOL

NEON_WANTED_REGEX="`sed -n '/NEON_WANTED_REGEX=/s/.*=//p' $srcdir/build/buildcheck.sh`"
NEON_LATEST_WORKING_VER="`sed -n '/NEON_LATEST_WORKING_VER=/s/.*=//p' $srcdir/build/buildcheck.sh`"
eval "`grep '^ *NEON_URL=' $srcdir/build/buildcheck.sh`"
SVN_LIB_NEON($NEON_WANTED_REGEX, $NEON_LATEST_WORKING_VER, $NEON_URL)

dnl find Apache
SVN_FIND_APACHE

dnl Check for libraries --------------------

dnl AC_CHECK_LIB() calls go here, if we ever need any

# Build the filesystem library (and repository administration tool)
# only if we have an appropriate version of Berkeley DB.
SVN_FS_WANT_DB_MAJOR=4
SVN_FS_WANT_DB_MINOR=0
SVN_FS_WANT_DB_PATCH=14
SVN_LIB_BERKELEY_DB($SVN_FS_WANT_DB_MAJOR, $SVN_FS_WANT_DB_MINOR,
                    $SVN_FS_WANT_DB_PATCH)

# Only add *_APACHE_RULE if we also have db, since mod_dav_svn depends on it.
INSTALL_RULES="install-base-lib install-lib install-bin install-include install-docs"
BUILD_RULES="base-lib lib bin test"
if test "$svn_lib_berkeley_db" = "yes"; then
  BUILD_RULES="base-lib fs-lib lib bin fs-bin $BUILD_APACHE_RULE test fs-test"
  INSTALL_RULES="install-base-lib install-fs-lib install-lib install-bin install-fs-bin $INSTALL_APACHE_RULE install-include install-docs"
  FS_TEST_DEPS="\$(FS_TEST_DEPS)"
  FS_TEST_PROGRAMS="\$(FS_TEST_PROGRAMS)"
fi
AC_SUBST(BUILD_RULES)
AC_SUBST(INSTALL_RULES)
AC_SUBST(FS_TEST_DEPS)
AC_SUBST(FS_TEST_PROGRAMS)
AC_SUBST(SVN_DB_INCLUDES)
AC_SUBST(SVN_DB_LIBS)

AC_DEFINE_UNQUOTED(SVN_FS_WANT_DB_MAJOR, $SVN_FS_WANT_DB_MAJOR,
                   [The desired major version for the Berkeley DB])
AC_DEFINE_UNQUOTED(SVN_FS_WANT_DB_MINOR, $SVN_FS_WANT_DB_MINOR,
                   [The desired minor version for the Berkeley DB])
AC_DEFINE_UNQUOTED(SVN_FS_WANT_DB_PATCH, $SVN_FS_WANT_DB_PATCH,
                   [The desired patch version for the Berkeley DB])

dnl Check for header files ----------------

dnl Standard C headers
AC_HEADER_STDC

dnl Check for typedefs, structures, and compiler characteristics ----------

dnl if compiler doesn't understand `const', then define it empty
AC_C_CONST

dnl if non-existent, define size_t to be `unsigned'
AC_TYPE_SIZE_T


dnl Check for library functions ----------

dnl libsvn_string uses memcmp()
AC_FUNC_MEMCMP

dnl svn_error's default warning handler uses vfprintf()
AC_FUNC_VPRINTF


dnl Process some configuration options ----------

AC_ARG_ENABLE(debug,
[  --enable-debug            Turn on debugging and compile time warnings],
[
    if test "$enableval" = "yes" ; then
      enable_debugging="yes"
    else
      enable_debugging="no"
    fi
])

AC_ARG_ENABLE(maintainer-mode,
[  --enable-maintainer-mode  Turn on debugging and very strict compile-time
                          warnings],
[
    if test "$enableval" = "yes" ; then
      if test "$enable_debugging" = "no" ; then
        AC_MSG_ERROR(Can't have --disable-debug and --enable-maintainer-mode)
      fi
      enable_debugging=yes
      if test "$GCC" = "yes"; then
        dnl SVN_DEBUG enables specific features for developer builds
        dnl AP_DEBUG enables specific (Apache) features for developer builds
        CFLAGS="$CFLAGS -Wpointer-arith -Wwrite-strings -Wshadow -DSVN_DEBUG -DAP_DEBUG";
      fi
    fi
])

if test "$enable_debugging" = "yes" ; then
  dnl At the moment, we don't want optimization, because we're
  dnl debugging.
  dnl ### actually, debugging should be fine with the default -O2
  changequote(,)
  CFLAGS="`echo $CFLAGS' ' | sed -e 's/-O[^ ]* //g'`"
  changequote([,])
else
  if test "$enable_debugging" = "no" ; then
    changequote(,)
    CFLAGS="`echo $CFLAGS' ' | sed -e 's/-g[0-9] //g' | sed -e 's/-g//g'`"
    changequote([,])
  fi
fi

dnl Find a diff that supports the "-u" flag
AC_MSG_CHECKING([for diff])
SVN_CLIENT_DIFF="`${abs_srcdir}/ac-helpers/check-diff.sh ${abs_srcdir}/ac-helpers`"
if test "$SVN_CLIENT_DIFF" = "";  then
  AC_MSG_ERROR([not found

Cannot find a diff in your PATH that supports the -u flag.
We recommend GNU diff (version 2.7 or later).
You can get it from ftp://ftp.gnu.org/pub/gnu/diffutils.
 ])
 fi
AC_MSG_RESULT([$SVN_CLIENT_DIFF])
AC_DEFINE_UNQUOTED(SVN_CLIENT_DIFF, "$SVN_CLIENT_DIFF", 
        [Define to be the full path to diff])

dnl Find a (non-broken) version of GNU diff3
AC_MSG_CHECKING([for non-broken GNU diff3])
SVN_CLIENT_DIFF3="`$SHELL ${abs_srcdir}/ac-helpers/gnu-diff3.sh ${abs_srcdir}/ac-helpers`"
if test "$SVN_CLIENT_DIFF3" = "";  then
  AC_MSG_ERROR([not found

Cannot find an unbroken GNU diff3 program in your PATH.
Please make sure you have GNU diff (version 2.7 or later) installed.  
You can get it from ftp://ftp.gnu.org/pub/gnu/diffutils.

(Note that FreeBSD uses a modified version of GNU diff that is unable
to handle certain types of text files.  Since diff3 uses GNU diff to do
the actual diffing, this effectively breaks diff3 as well.  If you are
using FreeBSD, please install the /usr/ports/textproc/diffutils port.)
])
fi
AC_MSG_RESULT([$SVN_CLIENT_DIFF3])
AC_DEFINE_UNQUOTED(SVN_CLIENT_DIFF3, "$SVN_CLIENT_DIFF3", 
	[Define to be the full path to your GNU diff3 program])

dnl Since this is used only on Unix-y systems, define the path separator as '/'
AC_DEFINE_UNQUOTED(SVN_PATH_LOCAL_SEPARATOR, '/',
        [Defined to be the path separator used on your local filesystem])
AC_DEFINE_UNQUOTED(SVN_PATH_STRIP_TRAILING_SLASHDOT, 0,
        [Non-zero if the trailing /. in paths should be stripped])

dnl Find a python 2.X binary, test cases will not run with Python 1.X
AC_PATH_PROG(PYTHON2, python2, none)
if test "$PYTHON2" = "none"; then
	AC_PATH_PROG(PYTHON, python, none)
else
	PYTHON=$PYTHON2
fi
if test "$PYTHON" != "none"; then
  echo "checking for Python 2.0 or newer"
  ${PYTHON} ${abs_srcdir}/build/pycheck.py
fi

dnl try to find "swig" to build the SWIG bindings
AC_PATH_PROG(SWIG, swig, none)
if test "$SWIG" != "none"; then
  if test "$PYTHON" != "none"; then
    SWIG_BUILD_RULES="$SWIG_BUILD_RULES swig-py-lib"
    SWIG_INSTALL_RULES="$SWIG_INSTALL_RULES install-swig-py-lib"

    AC_CACHE_CHECK([for Python includes], [ac_cv_python_includes],[
	ac_cv_python_includes="`$PYTHON ${abs_srcdir}/ac-helpers/get-py-info.py --includes`"
    ])
    SWIG_PY_INCLUDES="-I$ac_cv_python_includes"
  fi
fi
AC_SUBST(SWIG_BUILD_RULES)
AC_SUBST(SWIG_INSTALL_RULES)
AC_SUBST(SWIG_PY_INCLUDES)

dnl try to find the "makeinfo" program
AC_PATH_PROG(MAKEINFO, makeinfo, [echo cannot run makeinfo])
if test "MAKEINFO" = "echo cannot run makeinfo"; then
        dnl we won't install/make any info pages then
	INSTALL_INFO=""
else
	INSTALL_INFO='install-info'
fi
AC_SUBST(INSTALL_INFO)

dnl decide whether we want to link against the RA libraries
AC_ARG_ENABLE(dso,
[  --enable-dso              Turn on DSO loading of RA libraries],
[
    if test "$enableval" = "yes"; then
      enable_dso=yes
      if test "$enable_shared" = "no"; then
        AC_MSG_ERROR([--enable-dso conflicts with --disable-shared])
      fi
    fi
])

if test "$enable_shared" = "no" -o "$enable_dso" != "yes"; then
  AC_DEFINE(SVN_LIBSVN_CLIENT_LINKS_RA_DAV, 1,
        [Defined if libsvn_client should link against libsvn_ra_dav])
  SVN_RA_LIB_DEPS="subversion/libsvn_ra_dav/libsvn_ra_dav.la"
  SVN_RA_LIB_LINK="\$(abs_builddir)/subversion/libsvn_ra_dav/libsvn_ra_dav.la"

  if test "$svn_lib_berkeley_db" = "yes"; then
    AC_DEFINE(SVN_LIBSVN_CLIENT_LINKS_RA_LOCAL, 1,
        [Defined if libsvn_client should link against libsvn_ra_local])
    SVN_RA_LIB_DEPS="subversion/libsvn_ra_local/libsvn_ra_local.la \
	subversion/libsvn_repos/libsvn_repos.la \
	subversion/libsvn_fs/libsvn_fs.la \
	subversion/libsvn_ra_dav/libsvn_ra_dav.la"

    ### We can't just append to SVN_RA_LIB_LINK because of the following
    ### scenario: user has neon and db3 in /usr/local, and db4 in
    ### /usr/local/BerkeleyDB.4.0.  If libsvn_ra_dav.la comes before 
    ### libsvn_fs.la then libtool ends up link libsvn_fs to the db3 in
    ### /usr/local/lib
    SVN_RA_LIB_LINK="\$(abs_builddir)/subversion/libsvn_ra_local/libsvn_ra_local.la \
	\$(abs_builddir)/subversion/libsvn_repos/libsvn_repos.la \
	\$(abs_builddir)/subversion/libsvn_fs/libsvn_fs.la \
	\$(abs_builddir)/subversion/libsvn_ra_dav/libsvn_ra_dav.la"
  fi

fi
AC_SUBST(SVN_RA_LIB_DEPS)
AC_SUBST(SVN_RA_LIB_LINK)


dnl Pass some config data ----------------------------

AC_SUBST(abs_builddir)
AC_SUBST(abs_srcdir)

dnl
dnl BSD/OS (BSDi) needs to use a different include syntax in the Makefiles
dnl
case "$host" in
*bsdi*)
    # Check whether they've installed GNU make
    if make --version > /dev/null 2>&1; then 
	INCLUDE_OUTPUTS="include \$(top_srcdir)/build-outputs.mk"
    else
	# BSDi make
	INCLUDE_OUTPUTS=".include \"\$(top_srcdir)/build-outputs.mk\""
    fi
    ;;
*)
    INCLUDE_OUTPUTS="include \$(top_srcdir)/build-outputs.mk"
    ;;
esac
AC_SUBST(INCLUDE_OUTPUTS)

dnl Final step:  create the Makefile ----------------------------

AC_OUTPUT([Makefile])


dnl Create all of the build directories

if test "$abs_srcdir" != "$abs_builddir"; then
    make mkdir-init
fi


dnl  Print warning messages about what we did and didn't configure at the 
dnl  end, where people will actually see them.
case "$svn_lib_berkeley_db" in
  "no" )
    db_version="$SVN_FS_WANT_DB_MAJOR.$SVN_FS_WANT_DB_MINOR.$SVN_FS_WANT_DB_PATCH"
    AC_MSG_WARN([we have configured for a client-only build


The Subversion filesystem library, part of the server, requires
Berkeley DB version $db_version or newer, which you don't seem to have
installed.  We have created makefiles which will build the Subversion
client code only, and skip the server.  You can find latest version of
Berkeley DB at http://www.sleepycat.com/.  You can find the latest
version of Berkeley DB here: http://www.sleepycat.com/download.html

As an option, you may build Berkeley DB directly within the Subversion
source tree. Download and extract the Berkeley distribution, then
rename db-$db_version/ to db/ in the top level of the Subversion
source tree.
])
;;
esac