AC_INIT(Chocolate Doom, 2.2.1, fraggle@gmail.com, chocolate-doom)

PACKAGE_SHORTNAME=${PACKAGE_NAME% Doom}
PACKAGE_SHORTDESC="Conservative source port"
PACKAGE_COPYRIGHT="Copyright (C) 1993-2015"
PACKAGE_LICENSE="GNU General Public License, version 2"
PACKAGE_MAINTAINER="Simon Howard"
PACKAGE_URL="http://www.chocolate-doom.org/"
PACKAGE_ISSUES="https://github.com/chocolate-doom/chocolate-doom/issues"

AC_CONFIG_AUX_DIR(autotools)

orig_CFLAGS="$CFLAGS"

AC_PROG_CC
AC_PROG_RANLIB
AC_CHECK_PROG(HAVE_PYTHON, python, true, false)

OPT_LEVEL=2

# Engine room, we need more speed!

AC_ARG_ENABLE(penis-extension, 
[  --enable-penis-extension   Enable counterproductive compiler optimisations ],
[ OPT_LEVEL=3 ])

# If this is gcc, we have some options we'd like to turn on.  Turn on 
# optimisation and debugging symbols.

if test "$GCC" = "yes"
then
        WARNINGS="-Wall -Wdeclaration-after-statement -Wredundant-decls"
        CFLAGS="-O$OPT_LEVEL -g $WARNINGS $orig_CFLAGS"
fi

dnl Search for SDL ...

AM_PATH_SDL(1.1.3)

# Add the SDL compiler flags to the default compiler flag variables. 
# It is important to do this now, before checking for headers and
# library functions.  The reason being that on Windows, sdl-config
# sets the -mno-cygwin compiler option in order to generate MinGW 
# executables.  If we don't do this now, we might end up discovering
# header files that are not actually available to us when we come
# to compile.

CFLAGS="$CFLAGS $SDL_CFLAGS"
LDFLAGS="$LDFLAGS $SDL_LIBS"

# On some platforms, SDL renames main() to SDL_main() using a #define,
# so that its own main, stored in the SDLmain library, can be run first.
# Unfortunately, this causes problems for autoconf, which builds
# test programs to probe the system.  All library/header/symbol checks
# must be run in this block, that performs a workaround for the problem.

AC_SDL_MAIN_WORKAROUND([

    # Check for SDL_mixer.

    AC_CHECK_LIB(SDL_mixer,Mix_LoadMUS,[
        SDLMIXER_LIBS="$SDLMIXER_LIBS -lSDL_mixer"
    ],[
        echo "*** Could not find SDL_mixer.  Please install it."
        exit -1
    ])

    # Check for SDL_net.

    AC_CHECK_LIB(SDL_net,SDLNet_UDP_Send,[
        SDLNET_LIBS="$SDLNET_LIBS -lSDL_net"
    ],[
        echo "*** Could not find SDL_net.  Please install it."
        exit -1
    ])

    # Check for libsamplerate.
    AC_ARG_WITH([libsamplerate],
    AS_HELP_STRING([--without-libsamplerate],
        [Build without libsamplerate @<:@default=check@:>@]),
    [],
    [
        AC_CHECK_LIB(samplerate, src_new)
    ])
    # Check for libpng.
    AC_ARG_WITH([libpng],
    AS_HELP_STRING([--without-libpng],
        [Build without libpng @<:@default=check@:>@]),
    [],
    [
        AC_CHECK_LIB(z, zlibVersion)
        AC_CHECK_LIB(png, png_get_io_ptr)
    ])
    AC_CHECK_LIB(m, log)

    AC_CHECK_HEADERS([linux/kd.h dev/isa/spkrio.h dev/speaker/speaker.h])
    AC_CHECK_FUNCS(mmap ioperm)

    # OpenBSD I/O i386 library for I/O port access.
    # (64 bit has the same thing with a different name!)

    AC_CHECK_LIB(i386, i386_iopl)
    AC_CHECK_LIB(amd64, amd64_iopl)
])

case $host in
  *cygwin* | *mingw* )
    AC_CHECK_TOOL(WINDRES, windres, )
    ;;
  *)
    WINDRES=
    ;;
esac

AC_CHECK_TOOL(STRIP, strip, )

AM_CONDITIONAL(HAVE_WINDRES, test "$WINDRES" != "")
AM_CONDITIONAL(HAVE_PYTHON, $HAVE_PYTHON)

dnl Automake v1.8.0 is required, please upgrade!

AM_INIT_AUTOMAKE([1.8.0 foreign])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

WINDOWS_RC_VERSION=`echo $PACKAGE_VERSION | sed 's/-.*//; s/\./, /g; s/$/, 0/'`

# This controls the prefix added to the start of program names.  For example,
# if this is changed to "lemon-", the programs generated will be named
# lemon-doom, lemon-heretic, etc.

PROGRAM_PREFIX=chocolate-

AC_SUBST(PROGRAM_PREFIX)
AC_DEFINE_UNQUOTED(PROGRAM_PREFIX, "$PROGRAM_PREFIX",
                   Change this when you create your awesome forked version)

AM_CONFIG_HEADER(config.h:config.hin)

AC_SUBST(WINDOWS_RC_VERSION)
AC_SUBST(SDLMIXER_CFLAGS)
AC_SUBST(SDLMIXER_LIBS)

AC_SUBST(SDLNET_CFLAGS)
AC_SUBST(SDLNET_LIBS)

AC_SUBST(ac_aux_dir)

AC_SUBST(PACKAGE_SHORTNAME)
AC_SUBST(PACKAGE_SHORTDESC)
AC_SUBST(PACKAGE_COPYRIGHT)
AC_SUBST(PACKAGE_LICENSE)
AC_SUBST(PACKAGE_MAINTAINER)
AC_SUBST(PACKAGE_URL)
AC_SUBST(PACKAGE_ISSUES)

dnl Shut up the datarootdir warnings.
AC_DEFUN([AC_DATAROOTDIR_CHECKED])

AC_OUTPUT([
Makefile
man/Makefile
opl/Makefile
opl/examples/Makefile
pcsound/Makefile
pkg/Makefile
pkg/config.make
pkg/osx/Info-gnustep.plist
pkg/osx/Info.plist
rpm.spec
data/Makefile
src/Makefile
src/doom.appdata.xml
src/doom.desktop
src/doom-screensaver.desktop
src/doom/Makefile
src/heretic.appdata.xml
src/heretic.desktop
src/heretic/Makefile
src/hexen.appdata.xml
src/hexen.desktop
src/hexen/Makefile
src/resource.rc
src/setup-res.rc
src/setup/Makefile
src/setup/setup.desktop
src/setup/setup-manifest.xml
src/strife.appdata.xml
src/strife.desktop
src/strife/Makefile
textscreen/Makefile
textscreen/examples/Makefile
])