#
# ultrastardx configure.ac script
#
# by UltraStar Deluxe Team
#
# Execute "autogen.sh" or "make reconf"
# to create the configure script.
#
# Helper macros have been separated to
#   ax_extract_version.m4 (AX_EXTRACT_VERSION)
#   pkg_config_utils.m4   (PKG_VALUE, PKG_VERSION, PKG_HAVE)
#

# Require autoconf >= 2.61
AC_PREREQ(2.61)

# Init autoconf
AC_INIT([ultrastardx], 
        [1.1-alpha], 
        [http://sourceforge.net/tracker/?group_id=191560&atid=937872])
# specify the website here
PACKAGE_WEBSITE="http://www.ultrastardeluxe.org/"
AC_SUBST(PACKAGE_WEBSITE)
# specify the IRC-channel here
PACKAGE_IRC="#ultrastardx at quakenet.org"
AC_SUBST(PACKAGE_IRC)

# Specify a source-file so autoconf can check if the source-dir exists
AC_CONFIG_SRCDIR(src/ultrastardx.dpr)

# Set the path to install-sh
AC_CONFIG_AUX_DIR(dists/autogen)

# show features and packages in one list
AC_PRESERVE_HELP_ORDER

# -----------------------------------------
# find tools
# -----------------------------------------

# options for make command
AC_PROG_MAKE_SET
# find tool for ln -s (e.g. uses cp -p for FAT-filesystems)
AC_LN_S
# find a program for recursive dir creation
AC_PROG_MKDIR_P
# find the best install tool
AC_PROG_INSTALL
# some other useful tools
#AC_PROG_AWK
AC_PROG_SED
AC_PROG_GREP
#AC_PROG_EGREP

# -----------------------------------------
# macro declarations
# -----------------------------------------

# AC_SUBST_DEFINE(DEFINE_SUFFIX, IS_DEFINED)
# used to enable/disable pascal defines
AC_DEFUN([AC_SUBST_DEFINE],
[
    if [[ x$2 = xyes ]]; then
        DEFINE_[$1]=DEFINE
    else
	DEFINE_[$1]=UNDEF
    fi
    AC_SUBST(DEFINE_[$1])
])

# -----------------------------------------
# define switches
# -----------------------------------------

# print library options header
AC_ARG_WITH([cfg-dummy1], [
External Libraries:])

# add portmixer option
AC_ARG_WITH([portmixer],
    [AS_HELP_STRING([--with-portmixer],
      [enable portmixer audio-mixer support @<:@default=check@:>@])],
    [with_portmixer=$withval], [with_portmixer="check"])

# add projectM option
AC_ARG_WITH([libprojectM], 
    [AS_HELP_STRING([--with-libprojectM],
      [enable projectM visualization support @<:@default=no@:>@])],
    [with_libprojectM=$withval], [with_libprojectM="no"])

# print misc options header
AC_ARG_WITH([cfg-dummy2], [
Development options:])

# add DEPRECATED global and local options
AC_ARG_ENABLE(global, [AS_HELP_STRING([--enable-global], [(DEPRECATED, DO NOT USE]))])
AC_ARG_ENABLE(local, [AS_HELP_STRING([--enable-local], [(DEPRECATED, DO NOT USE]))])

if [[ x$enable_global != x -o x$enable_local != x ]]; then
   AC_MSG_NOTICE([

!!! NOTE: --enable-global and --enable-local are deprecated:
!!! - global build: just type "make" and "make install"
!!! - local  build: just type "make" and start "game/ultrastardx"
])
   sleep 2
fi

AC_ARG_ENABLE(debug,
  [AS_HELP_STRING([--enable-debug],
    [Enable debug build @<:@default=no@:>@])],
  [test $enableval = "yes" && ENABLE_DEBUG="yes"], [])
AC_SUBST(ENABLE_DEBUG)

# -----------------------------------------
# check for compilers
# -----------------------------------------

AC_CANONICAL_HOST

# find and test the freepascal compiler
# sets PFLAGS, FPC_VERSION, FPC_DEBUG, etc.
AC_PROG_FPC

# find and test the C compiler (for C-libs and wrappers)
AC_PROG_CC
AC_LANG([C])

# find and test the C++ compiler (for C-libs and wrappers)
AC_PROG_CXX
AC_LANG([C++])

AC_PROG_RANLIB

# find pkg-config
PKG_PROG_PKG_CONFIG()
if [[ x$PKG_CONFIG = x ]]; then
   AC_MSG_ERROR([
!!! pkg-config was not found on your system. 
!!! It is needed to determine the versions of your libraries.
!!! Install it and try again.])
fi


# -----------------------------------------
# check for OS
# -----------------------------------------

if test x$FPC_PLATFORM = xdarwin; then
   AC_MACOSX_VERSION
fi

# -----------------------------------------
# check for libraries
# -----------------------------------------

# libpng
PKG_HAVE([libpng], [libpng12], yes)

# find sdl
PKG_HAVE([sdl], [sdl], yes)

# find freetype
PKG_HAVE([freetype], [freetype2], yes)

# find sqlite3
PKG_HAVE([sqlite3], [sqlite3], yes)

# find lua 5.1
# (K)Ubuntu uses lua5.1.pc, Mac OS X and other 
# linux distributions use lua.pc
PKG_HAVE([lua], [lua5.1], no)
if [[ x$lua_HAVE = xno ]]; then
    PKG_HAVE([lua], [lua >= 5.1], yes)
fi

# find FFMpeg
# Note: do not use the min/max version parameters with ffmpeg
# otherwise it might fail in ubuntu due to a wrong version number 
# format in ffmpeg's .pc-files.
# For example: 0d.51.1.2 instead of the correct 51.1.2.
#   A check for version >=52.0.0 will return version 0d.51.1.2 
#   although it is lower because pkg-config is confused by the 0d.
# Use [mylib]_VERSION_INT for version-checking instead
PKG_HAVE([libavcodec], [libavcodec], yes)
PKG_VERSION([libavcodec], [libavcodec])
AC_CHECK_LIB([avcodec], [avcodec_decode_audio], [HAVE_AVCODEC_DECODE_AUDIO="yes"])
AC_CHECK_LIB([avcodec], [avcodec_decode_audio2], [HAVE_AVCODEC_DECODE_AUDIO2="yes"])
AC_CHECK_LIB([avcodec], [img_convert], [HAVE_IMG_CONVERT="yes"])
PKG_HAVE([libavformat], [libavformat], yes)
PKG_VERSION([libavformat], [libavformat])
PKG_HAVE([libavutil], [libavutil], yes)
PKG_VERSION([libavutil], [libavutil])
if [[ x$libavcodec_HAVE = xyes -a x$libavformat_HAVE = xyes -a x$libavutil_HAVE = xyes ]]; then
    ffmpeg_HAVE=yes
else
    ffmpeg_HAVE=no
fi
AC_SUBST_DEFINE(HAVE_FFMPEG, $ffmpeg_HAVE)

# find FFMpeg's swscale lib (just if FFMpeg is compiled in GPL mode)
PKG_HAVE([libswscale], [libswscale], no)
PKG_VERSION([libswscale], [libswscale])
AC_SUBST_DEFINE(HAVE_SWSCALE, $libswscale_HAVE)


# find projectM version
libprojectM_PKG="libprojectM >= 0.98"
PKG_HAVE([libprojectM], [$libprojectM_PKG], no)
PKG_VERSION([libprojectM], [$libprojectM_PKG])
AC_SUBST_DEFINE(HAVE_PROJECTM, $libprojectM_HAVE)
# get projectM include-dir
PKG_VALUE([libprojectM], [INCLUDEDIR], [variable=includedir], [$libprojectM_PKG], 
          [C-Header include-dir (e.g. /usr/include)])
# get projectM data-dir (for preset- and font-dir)
PKG_VALUE([libprojectM], [DATADIR], [variable=pkgdatadir], [$libprojectM_PKG], 
          [projectM data-directory for presets etc. (e.g. /usr/share/projectM)])
# check if we need the c-wrapper
if [[ "$libprojectM_VERSION_MAJOR" -ge 1 ]]; then
    libprojectM_USE_CWRAPPER=yes
else
    libprojectM_USE_CWRAPPER=no
fi
AC_SUBST(USE_PROJECTM_CWRAPPER, $libprojectM_USE_CWRAPPER)

# find portaudio
PKG_HAVE([portaudio], [portaudio-2.0], yes)
PKG_VERSION([portaudio], [portaudio-2.0])
AC_SUBST_DEFINE(HAVE_PORTAUDIO, $portaudio_HAVE)
# find portmixer
PKG_HAVE([portmixer], [portmixer], no)
AC_SUBST_DEFINE(HAVE_PORTMIXER, $portmixer_HAVE)

# determine linker-flags
if test x$FPC_PLATFORM = xdarwin; then
  LDFLAGS="-macosx_version_min 10.4 -undefined dynamic_lookup"
fi
#LIBS=
AC_SUBST(LDFLAGS)
AC_SUBST(LIBS)

# -----------------------------------------
# create output files
# -----------------------------------------

AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES([src/Makefile])
AC_CONFIG_FILES([plugins/Makefile])
AC_CONFIG_FILES([src/config-$FPC_PLATFORM.inc:src/config.inc.in])
if [[ x$libprojectM_USE_CWRAPPER = xyes ]]; then
    AC_CONFIG_FILES([src/lib/projectM/cwrapper/Makefile])
fi
AC_OUTPUT

# -----------------------------------------
# show results
# -----------------------------------------

AC_MSG_NOTICE([

!!!
!!! Configuration of $PACKAGE_NAME $PACKAGE_VERSION done!
!!!
!!! Type "make" to compile and 
!!!      "make install" to install it afterwards.
!!!
!!! For further information on $PACKAGE_NAME visit:
!!!   $PACKAGE_WEBSITE
!!!
!!! IMPORTANT:
!!! This is an UNSUPPORTED ALPHA release for developers only.
!!!
!!! DO NOT EXPECT THE MAKEFILE OR THE PROGRAM ITSELF TO WORK
!!!
!!! If you want to contribute, visit the IRC-Channel instead:
!!!   $PACKAGE_IRC
!!!
!!! PLEASE DO NOT SEND BUGREPORTS FOR THIS VERSION.
!!!
])

# TODO: insert this in the public beta release
#!!! In case you find a bug send a bugreport to:
#!!!   $PACKAGE_BUGREPORT
#!!! You might as well ask for help at the IRC-Channel
#!!!   $PACKAGE_IRC