* Makefile.maint (patch-check): Make it easier to regenerate

the src/c99-to-c89.diff file.  E.g., I do this:
make patch-check REGEN_PATCH=1; ediff src/c99-to-c89.diff new-diff

diff --git a/ChangeLog b/ChangeLog
index 5f42956fd79061cab497e9b1bf242dadd55e402c..0a1dcef892530cb7cd8b078ea6e77b87d0df2a70 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2006-10-28  Jim Meyering  <jim@meyering.net>
 
+       * Makefile.maint (patch-check): Make it easier to regenerate
+       the src/c99-to-c89.diff file.  E.g., I do this:
+       make patch-check REGEN_PATCH=1; ediff src/c99-to-c89.diff new-diff
+
        * src/c99-to-c89.diff: Update to reflect new offsets in rm.c.
 
 2006-10-26  Jim Meyering  <jim@meyering.net>

diff --git a/Makefile.maint b/Makefile.maint
index df412f64ccbd1b64b7bbab0312cd105cf7d8c5d0..d89e0d6e869f848ab44efddfdf9a7061c4cdfdae 100644 (file)
--- a/Makefile.maint
+++ b/Makefile.maint
@@ -330,6 +330,8 @@ patch-check:
        (cd src-c89; patch -V never --fuzz=0) < src/c99-to-c89.diff \
          > $@.1 2>&1
        grep -v '^patching file ' $@.1 > $@.2 || :
+       if test "$${REGEN_PATCH+set}" = set; then \
+         diff -upr src src-c89 > new-diff || : ; fi
        fail=0; test -s $@.2 && fail=1 || : ; \
        rm -rf src-c89 $@.1 $@.2; \
        test $$fail = 0