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crunchgen: slap a dependency on the generated makefile for .lo

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crunchgen generates a foo.lo for each binary it will end up crunching
into the final product.  While they have a dependency on the libs that
are used to link them, nothing will force relinking if the set of libs
needed to link them is changed.  Because of this, incremental builds may
not be possible if one builds a version of, e.g., rescue/ with a broken
set of libs specified for a project -- a subsequent fix won't be rolled
in cleanly, it will require purging the rescue/ objdir.

This is a bit crude, but the foo.mk we generate doesn't actually get
regenerated all that often in practice, so a spurious relink for the
vast majority of crunched objects won't actually happen all that often.

Reviewed by:	bapt, emaste, imp

(cherry picked from commit 6e2cfb24ee87fec0f538d04cd69d76a8d58c324f)
This commit is contained in:
Kyle Evans 2024-03-08 20:01:17 -06:00
parent efb74e16dd
commit 97bfe58ddc
1 changed files with 2 additions and 2 deletions
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4
usr.sbin/crunch/crunchgen/crunchgen.c
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@ -1115,8 +1115,8 @@ prog_makefile_rules(FILE *outmk, prog_t *p)
"int _crunched_%s_stub(int argc, char **argv, char **envp)"
"{return main(argc,argv,envp);}\" >%s_stub.c\n",
p->ident, p->ident, p->name);
fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)",
p->name, p->name, p->ident);
fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS) %s",
p->name, p->name, p->ident, outmkname);
if (p->libs)
fprintf(outmk, " $(%s_LIBS)", p->ident);