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73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
#! /usr/bin/env python
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# encoding: utf-8
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"""
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Compile whole groups of C/C++ files at once.
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def build(bld):
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bld.load('compiler_cxx unity')
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"""
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import sys
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from waflib import Task, Options
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from waflib.Tools import c_preproc
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from waflib import TaskGen
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MAX_BATCH = 50
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def options(opt):
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global MAX_BATCH
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opt.add_option('--batchsize', action='store', dest='batchsize', type='int', default=MAX_BATCH, help='batch size (0 for no batch)')
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class unity(Task.Task):
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color = 'BLUE'
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scan = c_preproc.scan
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def to_include(self, node):
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ret = node.path_from(self.outputs[0].parent)
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ret = ret.replace('\\', '\\\\').replace('"', '\\"')
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return ret
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def run(self):
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lst = ['#include "%s"\n' % self.to_include(node) for node in self.inputs]
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txt = ''.join(lst)
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self.outputs[0].write(txt)
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@TaskGen.taskgen_method
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def batch_size(self):
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return getattr(Options.options, 'batchsize', MAX_BATCH)
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def make_batch_fun(ext):
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# this generic code makes this quite unreadable, defining the function two times might have been better
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def make_batch(self, node):
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cnt = self.batch_size()
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if cnt <= 1:
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return self.create_compiled_task(ext, node)
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x = getattr(self, 'master_%s' % ext, None)
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if not x or len(x.inputs) >= cnt:
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x = self.create_task('unity')
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setattr(self, 'master_%s' % ext, x)
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cnt_cur = getattr(self, 'cnt_%s' % ext, 0)
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cxxnode = node.parent.find_or_declare('unity_%s_%d_%d.%s' % (self.idx, cnt_cur, cnt, ext))
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x.outputs = [cxxnode]
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setattr(self, 'cnt_%s' % ext, cnt_cur + 1)
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self.create_compiled_task(ext, cxxnode)
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x.inputs.append(node)
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return make_batch
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def enable_support(cc, cxx):
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if cxx or not cc:
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TaskGen.extension('.cpp', '.cc', '.cxx', '.C', '.c++')(make_batch_fun('cxx'))
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if cc:
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TaskGen.extension('.c')(make_batch_fun('c'))
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else:
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TaskGen.task_gen.mappings['.c'] = TaskGen.task_gen.mappings['.cpp']
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has_c = '.c' in TaskGen.task_gen.mappings or 'waflib.Tools.compiler_c' in sys.modules
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has_cpp = '.cpp' in TaskGen.task_gen.mappings or 'waflib.Tools.compiler_cxx' in sys.modules
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enable_support(has_c, has_cpp) # by default
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def build(bld):
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# it is best to do this
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enable_support(bld.env.CC_NAME, bld.env.CXX_NAME)
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