The syntax of a source list file is a very small subset of GNU Make. These
features are supported
- operators: +=, :=
+ operators: =, +=, :=
line continuation
non-nested variable expansion
comment
if op_pos < 0:
self._error('not a variable definition')
- if op_pos > 0 and line[op_pos - 1] in [':', '+']:
- op_pos -= 1
+ if op_pos > 0:
+ if line[op_pos - 1] in [':', '+']:
+ op_pos -= 1
else:
- self._error('only := and += are supported')
+ self._error('only =, :=, and += are supported')
# set op, sym, and val
op = line[op_pos:op_end]
sym = line[:op_pos].strip()
val = self._expand_value(line[op_end:].lstrip())
- if op == ':=':
+ if op in ('=', ':='):
self.symbol_table[sym] = val
elif op == '+=':
self.symbol_table[sym] += ' ' + val