為什么我在scons中的subdir定義不起作用？

Question

我開始使用scons添加一個新的子目錄及其SConscript。 但是我發現我的SConscript沒有被讀入根SConscript，我不知道為什么。 我會錯過什么嗎？

我的項目中的Scons文件如下所示：

project-root
 - SConstruct
 - Sconscript
 + supportlib
    - SConscript (returning library target)
    + src
       - ...
 + Program
    - SConsctipt (importing library target)
    + src
       - ...

root的SConscript如下所示：

subdirs = [..., AAAA]
SConscript(dirs = subdirs, exports='env')

在AAAA子目錄中，我有SConscript文件。 但是scons實際上不會在AAAA目錄中讀取此SConscript文件。 它的日志如下：

scons: Reading SConscript files ...
...
Enable AAAA:        True
...
scons: warning: Two different environments were specified for target dummy_register_server.o,
        but they appear to have the same action: $CXX -o $TARGET -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCES
File "/root/workspace/xorp.ct/xorp/site_scons/site_tools/autotest.py", line 85, in _UnitTest

scons: warning: Two different environments were specified for target /root/workspace/xorp.ct/xorp/obj/i686-pc-linux-gnu/rib/parser.o,
        but they appear to have the same action: $CXX -o $TARGET -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCES
File "/root/workspace/xorp.ct/xorp/site_scons/site_tools/autotest.py", line 85, in _UnitTest

scons: warning: Two different environments were specified for target dummy_register_server.o,
        but they appear to have the same action: $CXX -o $TARGET -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCES
File "/root/workspace/xorp.ct/xorp/site_scons/site_tools/autotest.py", line 85, in _UnitTest

scons: warning: Two different environments were specified for target aspath.os,
        but they appear to have the same action: $SHCXX -o $TARGET -c $SHCXXFLAGS $SHCCFLAGS $_CCCOMCOM $SOURCES
File "/root/workspace/xorp.ct/xorp/bgp/SConscript", line 169, in <module>
...
scons: done reading SConscript files.
scons: Building targets ...
scons: every thing is up to date. ***# but there is no AAAA target report.***
scons: done building targets.

Answer 1

您的文件樹沒有顯示AAAA文件夾的位置，並且頂層SConstruct中AAAA的定義也不清楚（它是字符串還是其他名稱？）。 這樣就不可能猜測出什么問題了。 無論如何，我建議您以UserGuide（ http://www.scons.org/doc/production/HTML/scons-user.html ）的形式查看官方文檔，並按照說明進行基本設置在第一章。 14“層次結構”。