dnl Process this file with autoconf to produce a configure script.
dnl Minimum version of autoconf required
AC_PREREQ(2.59)

dnl Update it right before the release since $pkgver_foo are all _post_ release snapshots
AC_INIT([Pacman package manager], 3.1.0-dev, [pacman-dev@archlinux.org], [pacman])
AC_LANG([C])
AC_CONFIG_HEADERS(config.h)
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE
AM_GNU_GETTEXT([external])
AM_GNU_GETTEXT_VERSION(0.13.1)

dnl Define the libalpm version number here
LIB_MAJOR_VERSION=1
LIB_MINOR_VERSION=1
LIB_MICRO_VERSION=1
LIB_VERSION=$LIB_MAJOR_VERSION.$LIB_MINOR_VERSION.$LIB_MICRO_VERSION
dnl Needed for libtool to create proper shared lib version.
dnl This is not completely correct- see 
dnl http://sourceware.org/autobook/autobook/autobook_91.html for details.
LIB_VERSION_INFO=`expr $LIB_MAJOR_VERSION + $LIB_MINOR_VERSION`:$LIB_MICRO_VERSION:$LIB_MINOR_VERSION

dnl Set subsitution values for version stuff in Makefiles and anywhere else
AC_SUBST(LIB_VERSION)
AC_SUBST(LIB_VERSION_INFO)

dnl Put version number in config.h
AC_DEFINE_UNQUOTED([LIB_VERSION], ["$LIB_VERSION"], [libalpm version number])

dnl Configuration files
dnl AC_CONFIG_FILES([etc/makepkg.conf] [etc/pacman.conf])

AC_PROG_CC
AC_HEADER_STDC
AC_PROG_INSTALL
AC_CHECK_FUNCS([strverscmp])
AM_PROG_LIBTOOL
AM_CONDITIONAL(LINKSTATIC, test "$enable_static" = "yes")

dnl Help line for root directory
AC_ARG_WITH(root-dir,
    AC_HELP_STRING([--with-root-dir=path], [Set the location of pacman's root operating directory]),
    [rootdir=$withval], [rootdir=/])

dnl Help line for database path
AC_ARG_WITH(db-path,
    AC_HELP_STRING([--with-db-path=path], [Set the location of pacman's database]),
    [dbpath=$withval], [dbpath=var/lib/pacman/])

dnl Help line for cache directory
AC_ARG_WITH(cache-dir,
    AC_HELP_STRING([--with-cache-dir=path], [Set the location of pacman's cache directory]),
    [cachedir=$withval], [cachedir=var/cache/pacman/pkg/])

dnl Help line for lock file
AC_ARG_WITH(lock-file,
    AC_HELP_STRING([--with-lock-file=path], [Set the location of pacman's lock file]),
    [lockfile=$withval], [lockfile=var/run/pacman.lck])

dnl Help line for config file
AC_ARG_WITH(config-file,
    AC_HELP_STRING([--with-config-file=path], [Set the location of pacman's config file]),
    [configfile=$withval], [configfile=etc/pacman.conf])

dnl Help line for package extension
AC_ARG_WITH(pkg-ext,
			AC_HELP_STRING([--with-pkg-ext=ext], [Set the file extension used by packages]),
    [pkgext=$withval], [pkgext=.pkg.tar.gz])

dnl Help line for database extension
AC_ARG_WITH(db-ext,
			AC_HELP_STRING([--with-db-ext=ext], [Set the file extension used by the database]),
    [dbext=$withval], [dbext=.db.tar.gz])

dnl Help line for doxygen
AC_ARG_ENABLE(doxygen,
    AC_HELP_STRING([--disable-doxygen], [Build API docs via Doxygen]),
    [wantdoxygen=$enableval], [wantdoxygen=yes])

dnl Help line for debug
AC_ARG_ENABLE(debug,
    AC_HELP_STRING([--enable-debug], [Enable debugging support]),
    [debug=$enableval], [debug=no])

dnl Host-dependant flags
case "${host}" in
	*-*-cygwin*)
		CFLAGS="$CFLAGS -DCYGWIN"
		;;
esac

dnl Check for architecture
case "${host}" in
	i686-*) 
		CARCH="i686"
		CARCHFLAGS="i686"
		ARCHSWITCH="march"
		;;
	x86_64-*) 
		CARCH="x86_64"
		CARCHFLAGS="x86-64"
		ARCHSWITCH="march"
		;;
	ia64-*) 
		CARCH="ia64"
		CARCHFLAGS="ia64"
		ARCHSWITCH="march"
		;;
	sparc-*) 
		CARCH="sparc"
		CARCHFLAGS="v9"
		ARCHSWITCH="mcpu"
		;;
	ppc-* | powerpc-*)
		CARCH="ppc"
		CARCHFLAGS="750"
		ARCHSWITCH="mcpu"
		;;
	i386-*) 
		CARCH="i386"
		CARCHFLAGS="i386"
		ARCHSWITCH="march"
		;;
	*)
		AC_MSG_ERROR([Your architecture is not supported])
		;;
esac

dnl Now do some things common to all architectures
CHOST="${host}"
AC_SUBST(CARCH)
AC_SUBST(CARCHFLAGS)
AC_SUBST(ARCHSWITCH)
AC_SUBST(CHOST)

dnl Humor lowers blood pressure
AC_MSG_CHECKING(your blood pressure)
AC_MSG_RESULT([a bit high, but we can proceed])

dnl Check for doxygen support
AC_MSG_CHECKING(for doxygen)
if test "x$wantdoxygen" = "xyes" ; then
    AC_CHECK_PROGS([DOXYGEN], [doxygen])
    if test $DOXYGEN ; then
		AC_MSG_RESULT(yes)
		usedoxygen=yes
    else
		AC_MSG_RESULT(no, doxygen missing)
		usedoxygen=no
    fi
else
    AC_MSG_RESULT(no, disabled by configure)
	usedoxygen=no
fi
AM_CONDITIONAL(HAS_DOXYGEN, test "x$usedoxygen" = "xyes")

dnl Check for math
AC_CHECK_LIB([m], [sqrt], [AC_CHECK_HEADER([math.h], [LIBM='-lm'])])
if test -z "$LIBM"; then
    AC_MSG_ERROR("math library needed to compile pacman!");
fi

dnl Check for libarchive
AC_CHECK_LIB([archive], [archive_read_data], [AC_CHECK_HEADER([archive.h], [LIBARCHIVE='-larchive'])])
if test -z "$LIBARCHIVE"; then
    AC_MSG_ERROR("libarchive is needed to compile pacman!");
fi

dnl Check for libdownload
AC_CHECK_LIB([download], [downloadParseURL], [AC_CHECK_HEADER([download.h], [LIBDOWNLOAD='-ldownload'])])
if test -z "$LIBDOWNLOAD"; then
    AC_MSG_ERROR("libdownload is needed to compile pacman!");
fi

dnl Enable or disable debug code
AC_MSG_CHECKING(for debug mode request)
if test "x$debug" = "xyes" ; then
	AC_DEFINE([PACMAN_DEBUG], , [Enable debug code])
	CFLAGS="$CFLAGS -g -Wall -Werror -fstack-protector -std=c99"
	LDFLAGS="$LDFLAGS -lmcheck"
    AC_MSG_RESULT(yes)
else
	CFLAGS="$CFLAGS -Wall -std=c99"
    AC_MSG_RESULT(no)
fi

dnl Set root directory
AC_DEFINE_UNQUOTED([PM_ROOT], "$rootdir", [Location of pacman's default root directory])

dnl Set database path
AC_DEFINE_UNQUOTED([PM_DBPATH], "$dbpath", [Location of pacman database])

dnl Set cache directory
AC_DEFINE_UNQUOTED([PM_CACHEDIR], "$cachedir", [Location of pacman's package cache])

dnl Set lock file location
AC_DEFINE_UNQUOTED([PM_LOCK], "$lockfile", [Location of pacman lock file])

dnl Set configuration file location
AC_DEFINE_UNQUOTED([PM_CONF], "$configfile", [Location of pacman configuration file])

dnl Set package file extension
AC_DEFINE_UNQUOTED([PM_EXT_PKG], "$pkgext", [The file extension used by pacman packages])

dnl Set database file extension
AC_DEFINE_UNQUOTED([PM_EXT_DB], "$dbext", [The file extension used by pacman databases])

dnl Set up localedir substitution, double eval to get full path
localedir="$(eval echo ${localedir})"
LOCALEDIR="$(eval echo ${localedir})"
AC_SUBST(LOCALEDIR)

dnl ==========================================================================

AC_OUTPUT([
lib/libalpm/Makefile
lib/libalpm/po/Makefile.in
src/pacman/Makefile
src/pacman/po/Makefile.in
src/util/Makefile
scripts/Makefile
scripts/abs
scripts/gensync
scripts/makepkg
scripts/makeworld
scripts/pacman-optimize
scripts/rankmirrors
scripts/repo-add
scripts/repo-remove
scripts/updatesync
doc/Makefile
etc/Makefile
etc/makepkg.conf
etc/pacman.conf
etc/pacman.d/Makefile
etc/pacman.d/mirrorlist
etc/abs/Makefile
pactest/Makefile
contrib/Makefile
Makefile
])

echo "
pacman-$VERSION:

    prefix                 : ${prefix}
    source code location   : ${srcdir}
    compiler               : ${CC}
    compiler flags         : ${CFLAGS}
    defines                : ${DEFS}

    Architecture           : ${CARCH}
    Architecture flags     : -${ARCHSWITCH}=${CARCHFLAGS}
    Host Type              : ${CHOST}

    libalpm version        : ${LIB_VERSION}
    pacman version         : ${PACKAGE_VERSION}

  Directory and file information:
    root directory         : ${rootdir}
    database path          : ${rootdir}${dbpath}
    cache directory        : ${rootdir}${cachedir}
    lock file location     : ${rootdir}${lockfile}
    conf file location     : ${rootdir}${configfile}
    package extension      : ${pkgext}
    database extension     : ${dbext}

  Compilation options:
    Doxygen support        : ${usedoxygen}
    debug support          : ${debug}
"