STANDALONEFILES = \
Layout.cpp
-.PHONY: lyx_commit_hash.h
-lyx_commit_hash.h:
- $(AM_V_GEN)hash=`cd "$(top_srcdir)" && git log -1 --pretty=format:%H 2>/dev/null || echo none` ; \
- sed s/@LYX_GIT_COMMIT_HASH@/$$hash/ "$(srcdir)"/lyx_commit_hash.h.in >$@
+.PHONY: update_commit_hash
+
+LCH_V_GEN = $(lch__v_GEN_@AM_V@)
+lch__v_GEN_ = $(lch__v_GEN_@AM_DEFAULT_V@)
+lch__v_GEN_0 = @echo " GEN lyx_commit_hash.h";
+lch__v_GEN_1 =
+
+update_commit_hash:
+ rm -f hash-temp \
+ $(LCH_V_GEN)hash=`cd "$(top_srcdir)" && git log -1 --pretty=format:%H 2>/dev/null || echo none` ; \
+ sed s/@LYX_GIT_COMMIT_HASH@/$$hash/ "$(srcdir)"/lyx_commit_hash.h.in >hash-temp ; \
+ cmp -s lyx_commit_hash.h hash-temp || cp hash-temp lyx_commit_hash.h ; \
+ rm -f hash-temp
+
+lyx_commit_hash.h: update_commit_hash
+
BUILT_SOURCES += lyx_commit_hash.h
CLEANFILES += lyx_commit_hash.h