#!SCons
 
# Command line options
opts = Options()
opts.AddOptions(
	BoolOption('DEBUG', 'Debug build', False),
	BoolOption('OFFSET', 'Offset finding', False)
)
 
# Main build environment
env = Environment(options=opts)
env.Append(toolpath='.', tools=["DistZip"]);

# Generate help text
Help(opts.GenerateHelpText(env))
 
# Add default compiler flags
env.Append(
	CPPFLAGS=['-m32', '-fPIC', '-march=i686', '-fno-strict-aliasing', '-fvisibility=hidden', '-DETH32_DEBUG'],
	LINKFLAGS=['-m32', '-shared'],
	LIBS=['m', 'pthread', 'elf', 'bfd', 'opcodes'],
)

env.MergeFlags('!pkg-config --cflags libelf')
 
# Release/Debug compiler flags
if env['DEBUG']:
	env.Append(
		CPPFLAGS=['-ggdb3'],
		CPPDEFINES={'ETH32_DEBUG': '1'},
		LIBS=['elf', 'bfd', 'opcodes'],
	)

elif env['OFFSET']:
        env.Append(
	        CPPFLAGS=['-ggdb3', '-DETH32_DEBUG', '-DETH32_PRELIM_OFFSETS'],
	        CPPDEFINES={'ETH32_DEBUG': '1'},
	        LIBS=['elf', 'bfd', 'opcodes'],
	)

else:
	env.Append(
		CPPFLAGS=['-O3', '-ffast-math'],
		LIBS=['dl'],
		LINKFLAGS=['-s', '/usr/lib/libelf.a', '/usr/lib/libopcodes.a', '/usr/lib/libbfd.a'],
	)
 
# Set build directory
if env['DEBUG']:
	buildDir = 'build/debug'
elif env ['OFFSET']:
	buildDir = 'build/offset'
else:
	buildDir = 'build/release'
 
SConscript(
	dirs='src',
	build_dir=buildDir,
	duplicate=False,
	exports='env'
)

if 'zip' in COMMAND_LINE_TARGETS:
	env.Append(toolpath = '.', tools = ["DistZip"]);
	zip = env.DistZip("out.zip", [env.Dir('pk3')])
	env.Alias("zip", zip)

env.Clean(DEFAULT_TARGETS, 'build')