python – Scons复制头文件来构建目录

build
|-- objects -> .o output files for constructing libmclib.a
|-- includes
|   |-- foo.h
|   `-- bar.h
`-- libmclib.a

我的SConstruct：

#!python
target = 'mock'

env = Environment(LINKCOM = "$LINK -o $TARGET $SOURCES $LINKFLAGS $CCFLAGS")
Export('env','target')

build_base = 'build'
SConscript('SConscript',variant_dir=build_base,duplicate=0)

# remove build directory
if GetOption('clean'):
    import subprocess
    subprocess.call(['rm','-rf',build_base])

我的SConscript：

#!python
Import('env')

# ...
# other stuff to build 'mclib_target'
# ...

def copy_header_files(target,source,env):
    Mkdir(target)
    header_files = []
    for d in env['CPPPATH']:
        header_files += Glob(d + "/*.h")
    for f in header_files:
        Copy(target,f)

# copy all relevant header files
env.Command("includes",mclib_target,copy_header_files)

Scons使用参数'[“build / includes”],[“build / libmclib.a”]’调用’copy_header_files’,但由于某种原因,’Mkdir’不会创建包含目录. “复制”似乎什么都不做.如果我这样称呼Mkdir：

env.Command("includes",[Mkdir('$TARGET')])

它似乎运作良好.如何解决/解决这个问题？我对Scons也很陌生,所以欢迎任何替代方案来完成这项任务.我正在使用scons 2.5.0.