Fix the build failure when srcdir != builddir and have gperf 3.1 or later installed
diff --git a/src/Makefile.am b/src/Makefile.am
index bbbfeda..bd5ac1f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -104,7 +104,11 @@
../fc-lang/fclang.h:
cd ../fc-lang && $(MAKE) $(AM_MAKEFLAGS) fclang.h
-fcobjshash.gperf: fcobjshash.gperf.h fcobjs.h
+fcobjshash.gperf: Makefile stamp-fcobjshash.gperf
+ -@$(RM) stamp-fcobjshash.gperf
+ @$(MAKE) stamp-fcobjshash.gperf
+ @touch -r stamp-fcobjshash.gperf $@
+stamp-fcobjshash.gperf: fcobjshash.gperf.h fcobjs.h
$(AM_V_GEN) $(CPP) -I$(top_srcdir) $< | \
$(SED) 's/^ *//;s/ *, */,/' | \
$(GREP) '^[^#]' | \
@@ -113,7 +117,7 @@
/CUT_OUT_END/ { no_write=0; next; }; \
{ if (!no_write) print; next; }; \
' - > $@.tmp && \
- mv -f $@.tmp $@ || ( $(RM) $@.tmp && false )
+ mv -f $@.tmp fcobjshash.gperf && touch $@ || ( $(RM) $@.tmp && false )
fcobjshash.h: Makefile fcobjshash.gperf
$(AM_V_GEN) $(GPERF) -m 100 fcobjshash.gperf > $@.tmp && \
@@ -198,7 +202,7 @@
@touch $@
CLEANFILES = $(ALIAS_FILES) fontconfig.def
-DISTCLEANFILES = stamp-fcstdint fcstdint.h
+DISTCLEANFILES = stamp-fcstdint fcstdint.h stamp-fcobjshash.gperf
fontconfig.def: $(PUBLIC_FILES) $(PUBLIC_FT_FILES)
echo Generating $@
