Hello, folks,
I have a little complex Makefile system. A parent Makefile call dozens of Makefiles in subdirctories. And the subdirctory Makefile calles shell script to do real building. I want to grab all output this Makefile system generate. So, i employ "make 2>&1 > make.log". but not all output messages are filed into make.log. The message generated by sub-makefile called shell script cannot be recorded into make.log. And another curiouse thing is, if i launch "make 2>&1 > make.log" in a perl script, all output do be sent into make.log.
Anybody can help me this? Thanks in advance!

Hawk

One of the quirks of redirection in the shell is, you have to redirect STDOUT first, then redirect STDERR into it:
Can't really explain why it worked otherwise from Perl.

Oh yes! I remember other guy writes this in perl is like "make >make.log 2>&1" as you do. I made mistake by using 2>&1 ahead >make.log. Thanks alot!!