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AC_SUBST([abs_srcdir], ["`cd $srcdir && pwd`"])
AC_SUBST([abs_builddir], ["`pwd`"])
if test "$abs_srcdir" = "$abs_builddir"; then
  canonicalized_srcdir=""
else
  canonicalized_srcdir="$srcdir/"
fi
AC_SUBST([canonicalized_srcdir])

SWIG_LDFLAGS="$LDFLAGS"
AC_SUBST([SWIG_LDFLAGS])

# Generate config.nice early (before the arguments are munged)
SVN_CONFIG_NICE(config.nice)

# ==== Check for programs ====================================================

# Look for a C compiler (before anything can set CFLAGS)
CMAINTAINERFLAGS="$CUSERFLAGS"
CUSERFLAGS="$CFLAGS"
AC_PROG_CC
SVN_CC_MODE_SETUP

# Look for a C++ compiler (before anything can set CXXFLAGS)
CXXMAINTAINERFLAGS="$CXXUSERFLAGS"
CXXUSERFLAGS="$CXXFLAGS"
AC_PROG_CXX
SVN_CXX_MODE_SETUP

# Look for a C pre-processor
AC_PROG_CPP

# Look for a good sed
# AC_PROG_SED was introduced in Autoconf 2.59b
m4_ifdef([AC_PROG_SED], [AC_PROG_SED], [SED="${SED:-sed}"])

# Grab target_cpu, so we can use it in the Solaris pkginfo file
AC_CANONICAL_TARGET

# Look for an extended grep
AC_PROG_EGREP

AC_PROG_LN_S

AC_PROG_INSTALL
# If $INSTALL is relative path to our fallback install-sh, then convert
# to an absolute path, as in some cases (e.g. Solaris VPATH build), libtool
# may try to use it from a changed working directory.
if test "$INSTALL" = "build/install-sh -c"; then
  INSTALL="$abs_srcdir/$INSTALL"
fi

if test -z "$MKDIR"; then
  MKDIR="$INSTALL -d"
fi
AC_SUBST([MKDIR])

# ==== Libraries, for which we may have source to build ======================

dnl verify apr version and set apr flags
dnl These regular expressions should not contain "\(" and "\)".
dnl The specific reason we require APR 0.9.7 is:
dnl   It contains fixes to its file writing routines
dnl   now generating errors instead of silently ignoring
dnl   them.  Only .7 and later can guarantee repository
dnl   integrity with FSFS.

APR_VER_REGEXES=["0\.9\.[7-9] 0\.9\.[12][0-9] 1\. 2\."]

SVN_LIB_APR($APR_VER_REGEXES)

if test `expr $apr_version : 2` -ne 0; then
  dnl Bump the library so-version to 2 if using APR-2
  dnl (Debian uses so-version 1 for APR-1-with-largefile)
  svn_lib_ver=2
  dnl APR-2 provides APRUTIL
  apu_config=$apr_config
  AC_SUBST(SVN_APRUTIL_INCLUDES)
  AC_SUBST(SVN_APRUTIL_CONFIG, ["$apu_config"])
  AC_SUBST(SVN_APRUTIL_LIBS)
else
  svn_lib_ver=0
  APU_VER_REGEXES=["0\.9\.[7-9] 0\.9\.1[0-9] 1\."]
  SVN_LIB_APRUTIL($APU_VER_REGEXES)
fi
SVN_LT_SOVERSION="-version-info $svn_lib_ver"
AC_SUBST(SVN_LT_SOVERSION)
AC_DEFINE_UNQUOTED(SVN_SOVERSION, $svn_lib_ver,
                   [Subversion library major verson])

dnl Search for pkg-config
AC_PATH_PROG(PKG_CONFIG, pkg-config)

dnl Search for serf
SVN_LIB_SERF(1,2,1)

if test "$svn_lib_serf" = "yes"; then
  AC_DEFINE([SVN_HAVE_SERF], 1,
            [Defined if support for Serf is enabled])
fi

dnl Search for apr_memcache (only affects fs_fs)
SVN_LIB_APR_MEMCACHE

if test "$svn_lib_apr_memcache" = "yes"; then
  AC_DEFINE(SVN_HAVE_MEMCACHE, 1,
            [Defined if apr_memcache (standalone or in apr-util) is present])
fi


dnl Find Apache with a recent-enough magic module number
SVN_FIND_APACHE(20020903)

dnl Search for SQLite.  If you change SQLITE_URL from a .zip to
dnl something else also update build/ac-macros/sqlite.m4 to reflect
dnl the correct command to unpack the downloaded file.
SQLITE_MINIMUM_VER="3.7.12"
SQLITE_RECOMMENDED_VER="3.7.15.1"
SQLITE_URL="http://www.sqlite.org/sqlite-amalgamation-$(printf %d%02d%02d%02d $(echo ${SQLITE_RECOMMENDED_VER} | sed -e 's/\./ /g')).zip"