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| author | Alexandre Oliva <aoliva@redhat.com> | 2005-01-26 09:17:02 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2005-01-26 09:17:02 +0000 |
| commit | 144023adabd37a36d4f9fa74ea17f4927f5bf767 (patch) | |
| tree | da86d141c635194d7149380b2a80d6375f4bb720 | |
| parent | e4cf29aea6b576d99b070b3e96d42d6af7e835bc (diff) | |
| download | gcc-144023adabd37a36d4f9fa74ea17f4927f5bf767.zip gcc-144023adabd37a36d4f9fa74ea17f4927f5bf767.tar.gz gcc-144023adabd37a36d4f9fa74ea17f4927f5bf767.tar.bz2 | |
Makefile.in (../$(build_subdir)/fixincludes/fixincl): Add dummy rule to avoid matching inappropriate suffix rule.
* Makefile.in (../$(build_subdir)/fixincludes/fixincl): Add dummy
rule to avoid matching inappropriate suffix rule.
From-SVN: r94255
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/Makefile.in | 14 |
2 files changed, 19 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 41af552..194966c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-01-26 Alexandre Oliva <aoliva@redhat.com> + + * Makefile.in (../$(build_subdir)/fixincludes/fixincl): Add dummy + rule to avoid matching inappropriate suffix rule. + 2005-01-26 Jan Hubicka <jh@suse.cz> PR tree-optimization/19421 diff --git a/gcc/Makefile.in b/gcc/Makefile.in index fb857cf..c04e9bd 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -2814,6 +2814,20 @@ s-macro_list : $(GCC_PASSES) $(SHELL) $(srcdir)/../move-if-change tmp-macro_list macro_list $(STAMP) s-macro_list +# The line below is supposed to avoid accidentally matching the +# built-in suffix rule `.o:' to build fixincl out of fixincl.o. You'd +# expect fixincl to be newer than fixincl.o, such that this situation +# would never come up. As it turns out, if you use ccache with +# CCACHE_HARDLINK enabled, the compiler doesn't embed the current +# working directory in object files (-g absent, or -fno-working-dir +# present), and build and host are the same, fixincl for the host will +# build after fixincl for the build machine, getting a cache hit, +# thereby updating the timestamp of fixincl.o in the the host tree. +# Because of CCACHE_HARDLINK, this will also update the timestamp in +# the build tree, and so fixincl in the build tree will appear to be +# out of date. Yuck. +../$(build_subdir)/fixincludes/fixincl: ; @ : + # Build fixed copies of system files. stmp-fixinc: gsyslimits.h macro_list \ ../$(build_subdir)/fixincludes/fixincl \ |