Import('env')


png_sources = [
	"png/example.c",
	"png/png.c",
	"png/pngerror.c",
	"png/pngget.c",
	"png/pngmem.c",
	"png/pngpread.c",
	"png/pngread.c",
	"png/pngrio.c",
	"png/pngrtran.c",
	"png/pngrutil.c",
	"png/pngset.c",
	"png/pngtrans.c",
	"png/pngwio.c",
	"png/pngwrite.c",
	"png/pngwtran.c",
	"png/pngwutil.c",
	"png/resource_saver_png.cpp",
	"png/image_loader_png.cpp"
]

if ("neon_enabled" in env and env["neon_enabled"]):	
	env_neon = env.Clone();
	if "S_compiler" in env:
		env_neon['CC'] = env['S_compiler']
	env_neon.Append(CPPFLAGS=["-DPNG_ARM_NEON"])
	import os
	# Currently .ASM filter_neon.S does not compile on NT.
	if (os.name!="nt"):
		env_neon.Append(CPPFLAGS=["-DPNG_ARM_NEON_OPT=2"])
		png_sources.append(env_neon.Object("#drivers/png/arm/arm_init.c"))
		png_sources.append(env_neon.Object("#drivers/png/arm/filter_neon.S"))


env.drivers_sources+=png_sources

#env.add_source_files(env.drivers_sources, png_sources)

Export('env')