On Mon, 2015-06-01 at 20:57 +0900, Luke Allardyce wrote:
> It's kind of strange that make seems to determine that the lib doesn't
> need remaking but can't then find it, but the manual only mentions
> when "-l" is a prerequisite so are they simply not supported when used
> as targets on their own like this?
Correct. The -l version is only expanded in prerequisites. This
feature is only available so you can write a rule like this:
foo: foo.o -lfoo
$(LINK.c) -o $@ $^
and have it work properly (that is, add "foo.o -lfoo" to the link line
as the expansion of "$^"). Fancy support for "-lfoo" is not needed in a
target context, because no tools build targets named "-lfoo".
> The following works
>
> main.exe: -lfoo
> -lfoo libfoo.a: libfoo.a(foo.o) ;
You can remove the "-lfoo" from the target line altogether; it's
useless:
main.exe: -lfoo
libfoo.a: libfoo.a(foo.o) ;
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