# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

# Copyright (c) 2004-2006 Lennart Poettering
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

AC_PREREQ(2.59)
AC_INIT([fusedav],[0.2],[mzshfrqni (at) 0pointer (dot) de])
AC_CONFIG_SRCDIR([src/fusedav.c])
AC_CONFIG_HEADERS([config.h])
AM_INIT_AUTOMAKE([foreign 1.9 -Wall])
AC_REVISION($Id$)

AC_SUBST(PACKAGE_URL, [http://0pointer.de/lennart/projects/fusedav/])

if type -p stow > /dev/null && test -d /usr/local/stow ; then
   AC_MSG_NOTICE([*** Found /usr/local/stow: default install prefix set to /usr/local/stow/${PACKAGE_NAME}-${PACKAGE_VERSION} ***])
   ac_default_prefix="/usr/local/stow/${PACKAGE_NAME}-${PACKAGE_VERSION}"
fi

AC_GNU_SOURCE

# Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET

test_gcc_flag() {
    AC_LANG_CONFTEST([int main() {}])
    $CC -c conftest.c $CFLAGS $@ > /dev/null 2> /dev/null
    ret=$?
    rm -f conftest.o
    return $ret
}

# If using GCC specify some additional parameters
if test "x$GCC" = "xyes" ; then

    DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Winline"

    if test "x$HAVE_NETLINK" = "xyes" ; then
        # Test whether rtnetlink.h can be included when compiled with -std=c99
        # some distributions (e.g. archlinux) have broken headers that dont
        # define __u64 with -std=c99
        AC_MSG_CHECKING([checking whether rtnetlink.h can be included with -std=c99])
        OLDCFLAGS="$CFLAGS"
        CFLAGS="-std=c99"
        AC_TRY_COMPILE([#include <linux/rtnetlink.h>], [],
            use_stdc99=yes, use_stdc99=no)

        if test x"$use_stdc99" = xyes; then
            DESIRED_FLAGS="-std=c99 $DESIRED_FLAGS"
            AC_MSG_RESULT([yes])
        else
            AC_MSG_RESULT([no])
        fi

        CFLAGS="$OLDCFLAGS"
    else
        DESIRED_FLAGS="-std=c99 $DESIRED_FLAGS"
    fi

    for flag in $DESIRED_FLAGS ; do
        AC_MSG_CHECKING([whether $CC accepts $flag])
        if test_gcc_flag $flag ; then
           CFLAGS="$CFLAGS $flag"
           AC_MSG_RESULT([yes])
        else
           AC_MSG_RESULT([no])
        fi
    done
fi

# 64 Bit LFS support
AC_SYS_LARGEFILE

# Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h malloc.h stdlib.h string.h sys/statfs.h termios.h unistd.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_STRUCT_ST_BLOCKS

# Checks for library functions.
AC_FUNC_MALLOC
AC_CHECK_FUNCS([ftruncate memset strdup strerror strrchr memchr strchr strcspn])

AC_CHECK_LIB([pthread], [pthread_create])

PKG_CHECK_MODULES(NEON, [ neon >= 0.26 ])
PKG_CHECK_MODULES(FUSE, [ fuse >= 2.5 ])

# LYNX documentation generation
AC_ARG_ENABLE(lynx,
        AS_HELP_STRING(--disable-lynx,Turn off lynx usage for documentation generation),
[case "${enableval}" in
  yes) lynx=yes ;;
  no)  lynx=no ;;
  *) AC_MSG_ERROR(bad value ${enableval} for --disable-lynx) ;;
esac],[lynx=yes])

if test x$lynx = xyes ; then
   AC_CHECK_PROG(have_lynx, lynx, yes, no)

   if test x$have_lynx = xno ; then
     AC_MSG_ERROR([*** Sorry, you have to install lynx or use --disable-lynx ***])
   fi
fi

AM_CONDITIONAL([USE_LYNX], [test "x$lynx" = xyes])

AC_CONFIG_FILES([src/Makefile Makefile doc/Makefile doc/README.html])
AC_OUTPUT