On Mon, 2011-11-14 at 09:53 -0500, Marc Smith wrote: > I must be missing something obvious... I'm using the shell function in > my Makefile with a recursive variable, however, it seems the command > in my shell function is only being evaluated once. I've tried this on > two different Linux distributions and get the same result; from > everything I read (even in the O'Reilly GNU Make book), this should > not be working this way. See below for an example: > > --snip-- > [marc.smith@catskill testing]$ cat Makefile > blah = $(shell date) > > all: > @ echo $(blah) > @ sleep 10 > @ echo $(blah) > --snip--
The behavior you're seeing is expected. GNU make IS evaluating that function twice. However, make expands all the lines in a recipe before it invokes the first one. It does not expand them one at a time, just before it invokes them. So even though make is running the "date" command twice, it's doing this one right after the other so they have the same result. -- ------------------------------------------------------------------------------- Paul D. Smith <psm...@gnu.org> Find some GNU make tips at: http://www.gnu.org http://make.mad-scientist.net "Please remain calm...I may be mad, but I am a professional." --Mad Scientist _______________________________________________ Help-make mailing list Help-make@gnu.org https://lists.gnu.org/mailman/listinfo/help-make
