Changeset 1ad4a4a

Timestamp:

Jul 22, 2009, 12:18:10 AM (15 years ago)

Author:

Anders Kaseorg <andersk@mit.edu>

Branches:

master, release-1.10, release-1.4, release-1.5, release-1.6, release-1.7, release-1.8, release-1.9

Children:

d43edd2

Parents:

df49ff6

git-author:

Anders Kaseorg <andersk@mit.edu> (07/22/09 00:09:53)

git-committer:

Anders Kaseorg <andersk@mit.edu> (07/22/09 00:18:10)

Message:

Makefile.am: Generalize the *.new mechanism for suppressing no-op updates.

Also use cp instead of mv to avoid redundant regenerations of *.new.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

File:

• Makefile.am (modified) (2 diffs)

Makefile.am

@@ -38 +38 @@
 BUILT_SOURCES = $(GEN_C) $(GEN_H)
 
+# Only copy file into place if file.new is different
+%: %.new
+        @diff -U0 $@ $< || { \
+         test -f $@ && echo '$@ changed!'; \
+         echo cp -f $< $@; \
+              cp -f $< $@; }
+
 proto: owl_prototypes.h
 
@@ -46 +53 @@
         perl $< $(filter-out $<,$+) > $@
 
-# Only move owl_prototypes.h into place if the new one is different
-owl_prototypes.h: codelist.pl varstubs.c $(BASE_SRCS) owl.c zcrypt.c
-        perl $< $(filter-out $<,$+) > owl_prototypes.h.new
-        @diff -U0 $@ owl_prototypes.h.new || { \
-         test -f $@ && echo 'Interfaces changed!'; \
-         echo mv -f owl_prototypes.h.new $@; \
-              mv -f owl_prototypes.h.new $@; }
+owl_prototypes.h.new: codelist.pl varstubs.c $(BASE_SRCS) owl.c zcrypt.c
+        perl $< $(filter-out $<,$+) > $@
 
 # For emacs flymake-mode