scons -j4scons: Reading SConscript files ...scons: done reading SConscript files.scons: warning: you do not seem to have the pywin32 extensions installed; parallel (-j) builds may not work reliably with open Python files.File "D: tthread\env\tools\Python27\Scripts\scons.py", line 204, in <module>scons: Building targets ...scons: building associated VariantDir targets: buildCC build\applications\idlehook.oCC build\applications\main.oCC build\applications\test_can.oCC build\applications\test_comu_01.oIn file included from D: tthread\Loongson-Smartloong-V3.0-RTT\include/rtlibc.h:22:0, from D: tthread\Loongson-Smartloong-V3.0-RTT\include/rtdef.h:1081, from D: tthread\Loongson-Smartloong-V3.0-RTT\include/rtthread.h:24, from applications\idlehook.c:14:D: tthread\Loongson-Smartloong-V3.0-RTT\include/libc/libc_fdset.h:23:24: fatal error: sys/select.h: No such file or directory #include <sys/select.h>
在编译时出现如上代码，请问如何解决？
