perl: detect new files in MakeMaker builds
While Makefile.PL now finds .pm files on its own, it does not
detect new files after it generates perl/perl.mak.
[ew: commit message, minor tweaks]
ref: http://mid.gmane.org/7vlii51xz4.fsf@alter.siamese.dyndns.org
Signed-off-by: Eric Wong <normalperson@yhbt.net>
diff --git a/Makefile b/Makefile
index b0b3493..e2a4ac7 100644
--- a/Makefile
+++ b/Makefile
@@ -2090,6 +2090,13 @@
ifndef NO_PERL
$(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
+perl/perl.mak: perl/PM.stamp
+
+perl/PM.stamp: FORCE
+ $(QUIET_GEN)find perl -type f -name '*.pm' | sort >$@+ && \
+ { cmp $@+ $@ >/dev/null 2>/dev/null || mv $@+ $@; } && \
+ $(RM) $@+
+
perl/perl.mak: GIT-CFLAGS GIT-PREFIX perl/Makefile perl/Makefile.PL
$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
