Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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#!/usr/bin/env python
# encoding: utf-8
# Rafaël Kooi 2019
from waflib import TaskGen
banned_extensions_list = ["rc", "asm", "masm"]
@TaskGen.feature('c', 'cxx', 'fc')
@TaskGen.after_method('propagate_uselib_vars')
def add_pdb_per_object(self):
"""For msvc/fortran, specify a unique compile pdb per object, to work
around LNK4099. Flags are updated with a unique /Fd flag based on the
task output name. This is separate from the link pdb.
"""
if not hasattr(self, 'compiled_tasks'):
return
link_task = getattr(self, 'link_task', None)
for task in self.compiled_tasks:
if task.inputs and (task.inputs[0].name.lower().split(".")[-1] in banned_extensions_list):
continue
add_pdb = False
for flagname in ('CFLAGS', 'CXXFLAGS', 'FCFLAGS'):
# several languages may be used at once
for flag in task.env[flagname]:
if flag[1:].lower() == 'zi':
add_pdb = True
break
if add_pdb:
node = task.outputs[0].change_ext('.pdb')
pdb_flag = '/Fd:' + node.abspath()
for flagname in ('CFLAGS', 'CXXFLAGS', 'FCFLAGS'):
buf = [pdb_flag]
for flag in task.env[flagname]:
if flag[1:3] == 'Fd' or flag[1:].lower() == 'fs' or flag[1:].lower() == 'mp':
continue
buf.append(flag)
task.env[flagname] = buf
if link_task and not node in link_task.dep_nodes:
link_task.dep_nodes.append(node)
if not node in task.outputs:
task.outputs.append(node)