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# in particular 2.2.25, 2.4.5, and 2.4.6 had the following bugs which are
# troublesome for Subversion:
# PR 55304: https://issues.apache.org/bugzilla/show_bug.cgi?id=55304
# PR 55306: https://issues.apache.org/bugzilla/show_bug.cgi?id=55306
# PR 55397: https://issues.apache.org/bugzilla/show_bug.cgi?id=55397
if test -n "$APXS" && test "$APXS" != "no"; then
  AC_MSG_CHECKING([mod_dav version])
  old_CPPFLAGS="$CPPFLAGS"
  CPPFLAGS="$CPPFLAGS $SVN_APR_INCLUDES"
  blacklisted_versions_regex=["\"2\" \"\.\" (\"2\" \"\.\" \"25\"|\"4\" \"\.\" \"[56]\")"]
  AC_EGREP_CPP([apache_version= *$blacklisted_versions_regex],
               [
#include "$APXS_INCLUDE/ap_release.h"
apache_version=AP_SERVER_BASEREVISION],
               [AC_MSG_RESULT([broken])
                AC_MSG_ERROR([Apache httpd version includes a broken mod_dav; use a newer version of httpd])],
               [AC_MSG_RESULT([acceptable])])
  CPPFLAGS="$old_CPPFLAGS"
fi

AC_ARG_WITH(apache-libexecdir,
            [AS_HELP_STRING([[--with-apache-libexecdir[=PATH]]],
                            [Install Apache modules to Apache's configured
                             modules directory instead of LIBEXECDIR;
                             if PATH is given, install to PATH.])],
[APACHE_LIBEXECDIR="$withval"],[APACHE_LIBEXECDIR='no'])

INSTALL_APACHE_MODS=false
if test -n "$APXS" && test "$APXS" != "no"; then
    APXS_CC="`$APXS -q CC`"
    APACHE_INCLUDES="$APACHE_INCLUDES -I$APXS_INCLUDE"

    if test "$APACHE_LIBEXECDIR" = 'no'; then
        APACHE_LIBEXECDIR="$libexecdir"
    elif test "$APACHE_LIBEXECDIR" = 'yes'; then
        APACHE_LIBEXECDIR="`$APXS -q libexecdir`"
    fi

    BUILD_APACHE_RULE=apache-mod
    INSTALL_APACHE_RULE=install-mods-shared
    INSTALL_APACHE_MODS=true

    case $host in
      *-*-cygwin*)
        APACHE_LDFLAGS="-shrext .so"
        ;;
    esac
elif test x"$APXS" != x"no"; then
    echo "=================================================================="
    echo "WARNING: skipping the build of mod_dav_svn"
    echo "         try using --with-apxs"
    echo "=================================================================="
fi

AC_SUBST(APXS)
AC_SUBST(APACHE_LDFLAGS)
AC_SUBST(APACHE_INCLUDES)
AC_SUBST(APACHE_LIBEXECDIR)
AC_SUBST(INSTALL_APACHE_MODS)

# there aren't any flags that interest us ...
#if test -n "$APXS" && test "$APXS" != "no"; then
#  CFLAGS="$CFLAGS `$APXS -q CFLAGS CFLAGS_SHLIB`"
#fi

if test -n "$APXS_CC" && test "$APXS_CC" != "$CC" ; then
  echo "=================================================================="
  echo "WARNING: You have chosen to compile Subversion with a different"
  echo "         compiler than the one used to compile Apache."
  echo ""
  echo "    Current compiler:      $CC"
  echo "   Apache's compiler:      $APXS_CC"
  echo ""
  echo "This could cause some problems."
  echo "=================================================================="
fi

])