configure.in

AC_INIT([nightfall], [0.1], [alexander.toresson@gmail.com, bloopz@gmail.com, zanathel@gmail.com])
AM_INIT_AUTOMAKE([nightfall], [0.1])

AC_PROG_CXX
AC_PROG_CC
AC_PROG_INSTALL
AC_HEADER_STDC
AC_CONFIG_HEADERS(src/config.h)

AC_LANG_CPLUSPLUS

AM_GNU_GETTEXT([external])
AM_GNU_GETTEXT_VERSION([0.17])

MACHINE=`uname -s`

AC_DEFUN([RTS_CHECK_LIB],
[
	AC_MSG_CHECKING([for $1])
	if @<:@ $MACHINE = "Darwin" @:>@; then
		CXXFLAGS="${CXXFLAGS} -F$3"
		LIBS="${LIBS} -framework $3"
		echo "OS X detected; using frameworks"
	else
		AC_CHECK_LIB($1,$2,[],[AC_MSG_ERROR("$1 library could not be found!")])
	fi
])

RTS_CHECK_LIB(GL,glVertex3f,OpenGL)
if @<:@ $MACHINE != "Darwin" @:>@; then
	RTS_CHECK_LIB(GLU,gluLookAt,GLU)
fi
AC_CHECK_LIB(GLEW,glewInit,[],[AC_MSG_ERROR("GLEW library could not be found!")])

if @<:@ -z `pkg-config --version` @:>@; then
	echo "pkg-config could not be found, falling back to *-config binaries... "

	echo -n "checking for SDL... "
	if @<:@ -z `sdl-config --version|grep ^1.2` @:>@; then
		AC_MSG_ERROR("SDL library could not be found!")
	else
		echo "SDL 1.2.x found!"
		SDL_CFLAGS=`sdl-config --cflags`
		SDL_LIBS=`sdl-config --libs`
	fi

	echo -n "checking for LUA 5.0.x... "
	if @<:@ -z "`lua-config50 --libs --include`" @:>@; then
		AC_MSG_ERROR("LUA library 5.0.x or 5.1.x could not be found!")
	else
		echo "LUA 5.0.x found!"
		LUA_CFLAGS=`lua-config50 --include`
		LUA_LIBS=`lua-config50 --libs --extralibs`
	fi

else
	PKG_CHECK_MODULES(SDL, sdl >= 1.2.0,,
	[
		echo -n "SDL could not be found using pkg-config, falling back to sdl-config... "
		if @<:@ -z "`sdl-config --version|grep ^1.2`" @:>@; then
			AC_MSG_ERROR("SDL library could not be found!")
		else
			echo "SDL found!"
			SDL_CFLAGS=`sdl-config --cflags`
			SDL_LIBS=`sdl-config --libs`
		fi
	])
	PKG_CHECK_MODULES(LUA, lua5.1 >= 5.1.0,,
	[
		PKG_CHECK_MODULES(LUA, lua >= 5.0.0,,
		[
			PKG_CHECK_MODULES(LUA, lua50 >= 5.0.0,,
			[
				echo -n "LUA could not be found using pkg-config, falling back to lua-config50... "
				if @<:@ -z "`lua-config50 --libs --include`" @:>@; then
					AC_MSG_ERROR("LUA library 5.0.x or 5.1.x could not be found!")
				else
					echo "LUA 5.0.x found!"
					LUA_CFLAGS=`lua-config50 --include`
					LUA_LIBS=`lua-config50 --libs --extralibs`
				fi
			])
		])
	])
fi

CFLAGS="$LUA_CFLAGS $SDL_CFLAGS"
LIBS="$LUA_LIBS $SDL_LIBS $LIBS"

AC_CHECK_LIB(SDL_mixer,Mix_LoadMUS,[],[AC_MSG_ERROR("SDL_mixer library could not be found!")])
AC_CHECK_LIB(SDL_image,IMG_Load,[],[AC_MSG_ERROR("SDL_image library could not be found!")])
AC_CHECK_LIB(SDL_ttf,TTF_OpenFont,[],[AC_MSG_ERROR("SDL_ttf library could not be found!")])
AC_CHECK_LIB(SDL_net,SDLNet_Init,[],[AC_MSG_ERROR("SDL_net library could not be found!")])

AC_CHECK_LIB(PocoFoundation,main,[],[AC_MSG_ERROR("PocoFoundation library could not be found!")])
AC_CHECK_LIB(PocoZip,main,[],[AC_MSG_ERROR("PocoZip library could not be found!")])

echo "CFLAGS = $CFLAGS"
echo "LIBS = $LIBS"

LD="ld"

dnl **************************************
dnl *** Check for linker optimizations ***
dnl **************************************
AC_MSG_CHECKING([whether $LD accepts -O1])
case `$LD -O1 -v 2>&1 </dev/null` in
*GNU* | *'with BFD'*)
  LDFLAGS="$LDFLAGS -Wl,-O1"
  AC_MSG_RESULT([yes])
  ;;
*)
  AC_MSG_RESULT([no])
  ;;
esac

dnl **************************************
dnl *** Check for linker optimizations ***
dnl **************************************
AC_MSG_CHECKING([whether $LD accepts --as-needed])
case `$LD -O1 -v 2>&1 </dev/null` in
*GNU* | *'with BFD'*)
  LDFLAGS="$LDFLAGS -Wl,--as-needed"
  AC_MSG_RESULT([yes])
  ;;
*)
  AC_MSG_RESULT([no])
  ;;
esac

dnl *****************************
dnl *** Generate output files ***
dnl *****************************
AC_OUTPUT([
Makefile
src/Makefile
po/Makefile.in
])