On Sat, Jun 2, 2012 at 2:17 PM, normvcr <[email protected]> wrote: > I have come across a puzzling problem while building with make. > > make all > > While building the targets, make eventually comes to building > foo.o, but quits with an error, that it cannot find foo.cpp . > > However, when I now do, again, at the OS prompt: > > make all > > make picks up where it left off, and succeeds; the echo of the command > shows that make > is correctly using .../src/foo.cpp through the vpath directives. > > My question is, why did make not find .../src/foo.cpp in the course > of the original invokation of make?
I believe the most common cause of this is because some makefile rule builds a file other than $@. In this case, ../src/foo.cpp didn't exist before the first run but did afterwards, but make didn't know that some rule that it had run had created it. What was the rule that generated ../src/foo.cpp? Philip Guenther _______________________________________________ Help-make mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-make
