# this file detects what OS and libs the computer have/are running

# Automatically recognize if building on Win32
ifdef WINDIR
ifndef UNIX
WIN32:=1
endif
else
UNIX:=1
endif

# Automatically recognize if building on FreeBSD
ifeq ($(shell uname),FreeBSD)
FREEBSD:=1
endif

# Automatically recognize if building on MacOSX
ifeq ($(VENDOR), apple)
OSX:=1
# OSX uses the unix setup too
UNIX:=1
endif

# Automatically recognize if building on MorphOS
ifeq ($(shell uname), MorphOS)
MORPHOS:=1
# MorphOS uses UNIX setup too
UNIX:=1
endif

# FreeBSD uses sdl11 instead of sdl
ifdef FREEBSD
SDL-CONFIG:=sdl11-config
else
SDL-CONFIG:=sdl-config
endif


# Library detections
WITH_SDL:=$(shell $(SDL-CONFIG) --version 2>/dev/null)

# libpng detection
ifdef FREEBSD
# a little hack was needed for FreeBSD because it misses libpng-config
WITH_PNG:=$(shell ls /usr/lib | grep "libpng" 2>/dev/null) $(shell \
ls /usr/local/lib | grep "libpng" 2>/dev/null)
ifdef WITH_PNG
# makes the flag look nicer in makefile.config
WITH_PNG:=1
endif
else
WITH_PNG:=$(shell libpng-config --version 2>/dev/null)
endif

ifdef WITH_PNG
# LibPNG depends on Zlib
WITH_ZLIB:=1
else
# We go looking for zlib with a little hack
WITH_ZLIB:=$(shell ls /usr/include | grep "zlib.h" 2>/dev/null) \
$(shell ls /usr/local/include | grep "zlib.h" 2>/dev/null)
ifdef WITH_ZLIB
WITH_ZLIB:=1
endif
endif


# sets the default paths
ifdef UNIX
ifndef OSX
ifndef MORPHOS
ifndef BIN_DIR
#BINARY_DIR:=
#DATA_DIR_PREFIX:=
#INSTALL_DIR:=/usr/local/
#USE_HOMEDIR:=
endif
endif
endif
endif