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one/share/scons/lex_bison.py

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import os
import SCons
############
# BUILDERS #
############
def build_lex(target, source, env):
cwd=os.getcwd()
src=SCons.Util.to_String(source[0])
src_dir=os.path.dirname(src)
src_name=os.path.basename(src)
os.chdir(src_dir)
os.system("flex "+src_name)
os.chdir(cwd)
return None
def emitter_lex(target, source, env):
src=SCons.Util.to_String(source[0])
src_dir=os.path.dirname(src)
(src_name, src_ext)=os.path.splitext(os.path.basename(src))
target.append(src_name+".h")
return target, source
def add_lex(environment):
lex_bld=SCons.Builder.Builder(action=build_lex,
suffix='.c',
src_suffix='.l',
emitter=emitter_lex)
environment.Append(BUILDERS={'Lex':lex_bld})
def build_bison(target, source, env):
cwd=os.getcwd()
src=SCons.Util.to_String(source[0])
src_dir=os.path.dirname(src)
src_name=os.path.basename(src)
(base, ext)=os.path.splitext(src_name)
os.chdir(src_dir)
os.system("bison "+src_name)
os.rename(base+".hh", base+".h")
os.chdir(cwd)
return None
def emitter_bison(target, source, env):
src=SCons.Util.to_String(source[0])
src_dir=os.path.dirname(src)
(src_name, src_ext)=os.path.splitext(os.path.basename(src))
target.append(src_name+".h")
return target, source
def add_bison(environment):
bison_bld=SCons.Builder.Builder(action=build_bison,
suffix='.cc',
src_suffix='.y',
emitter=emitter_bison)
environment.Append(BUILDERS={'Bison':bison_bld})