%% Edward Peschko <[EMAIL PROTECTED]> writes: > ep> CFLAGS = '$(CFLAGS) -g'
>> Is this something in the makefile or on the command line? I'm confused, >> because I thought you said you didn't want to change the makefiles but >> the above looks like a makefile setting, not a command line setting. ep> On the command line. The idea would be that make would use the ep> CFLAGS environmental variable, see that it contains a CFLAGS make ep> variable, and then use that make variable plus the extra on the ep> end of it. Ah, OK, then you need to quote it more than that since the whitespace would cause the shell to break it up into separate words; I guess you mean something like: make CFLAGS='$(CFLAGS) -g' >> Anyway, that syntax is not acceptable. It is completely contrary to the >> rules that make variables use for expansion. Plus make does not use >> quoting. ep> Why is it 'completely contrary to the rules that make variables ep> use for expansion'? Referencing a recursive variable inside the setting of another recursive variable gives an infinite loop during expansion. A "better" syntax would be one of these: make CFLAGS:='$(CFLAGS) -g' or the one you originally asked about: make CFLAGS+='$(CFLAGS) -g' However, this change would not necessarily be simple and would require serious thought before implementation. Right now make has a very strict hierarchy for controlling which values take precedence between command line settings, makefile settings, and environment settings... what you propose slurs at least one of those lines and shouldn't be considered lightly. There are many issues involved, including when the variable value is set, how to handle recursive invocations of make, etc. -- ------------------------------------------------------------------------------- Paul D. Smith <[EMAIL PROTECTED]> Find some GNU make tips at: http://www.gnu.org http://make.paulandlesley.org "Please remain calm...I may be mad, but I am a professional." --Mad Scientist _______________________________________________ Help-make mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/help-make
