AC_PREREQ([2.71])
AC_INIT([engine], [alpha])
AC_CONFIG_SRCDIR([src/engine.cpp])
AC_CONFIG_HEADERS([src/config.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([foreign subdir-objects])
AC_CONFIG_FILES([Makefile])

SDL_VERSION=2.0
AC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],
    sdl_prefix="$withval", sdl_prefix="")

DEPS_CFLAGS=""
DEPS_LIBS=""

AS_IF([test "x$sdl_prefix" = x], [
        PKG_CHECK_MODULES([SDL], [sdl2 >= $SDL_VERSION])
    ], [
        sdl_config="$sdl_prefix/bin/sdl2-config"
        SDL_CFLAGS=`"$sdl_config" --prefix="$sdl_prefix" --cflags`
        SDL_LIBS=`"$sdl_config" --prefix="$sdl_prefix" --libs`
        # TODO: check if sdl is present, check version
    ])
DEPS_CFLAGS="$SDL_CFLAGS $DEPS_CFLAGS"
DEPS_LIBS="$SDL_LIBS $DEPS_LIBS"

AC_CANONICAL_HOST
AS_IF([test "$host_os" != mingw32], [
    PKG_CHECK_MODULES([NCURSES], [ncurses])
    DEPS_CFLAGS="$NCURSES_CFLAGS $DEPS_CFLAGS"
    DEPS_LIBS="$NCURSES_LIBS $DEPS_LIBS"
    AC_DEFINE([ENABLE_NCURSES], [], [Enable ncurses])
])

AC_SUBST(DEPS_CFLAGS)
AC_SUBST(DEPS_LIBS)

AC_PROG_CXX
AC_TYPE_UINT32_T
AC_CHECK_FUNCS([floor setlocale])
AC_OUTPUT