Hi!

When upgrading a gcc tree < r230888 with objdir to r230888 or later
and just doing make in the gcc subdir, I'm getting errors - genmatch
complains that it doesn't know IFN_FMAX.
The problem seems to be a missing dependency, build/gencfn-macros
depends on internal-fn.def and thus cfn-operators.pd is updated,
but build/genmatch does not depend on it, even when it includes
internal-fn.def, so has not been rebuilt and fails to parse
the new cfn-operators.pd.
Fixed thusly, ok for trunk?

2015-11-26  Jakub Jelinek  <ja...@redhat.com>

        * Makefile.in (build/genmatch.o): Depend on internal-fn.def.

--- gcc/Makefile.in.jj  2015-11-18 11:19:26.000000000 +0100
+++ gcc/Makefile.in     2015-11-26 18:15:24.254279664 +0100
@@ -2598,7 +2598,7 @@ build/genmddump.o : genmddump.c $(RTL_BA
   coretypes.h $(GTM_H) errors.h $(READ_MD_H) gensupport.h
 build/genmatch.o : genmatch.c $(BCONFIG_H) $(SYSTEM_H) \
   coretypes.h errors.h $(HASH_TABLE_H) hash-map.h $(GGC_H) is-a.h \
-  tree.def builtins.def
+  tree.def builtins.def internal-fn.def
 build/gencfn-macros.o : gencfn-macros.c $(BCONFIG_H) $(SYSTEM_H)       \
   coretypes.h errors.h $(HASH_TABLE_H) hash-set.h builtins.def internal-fn.def
 

        Jakub

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