Makefile: rebuild perl scripts when perl paths change

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/.gitignore b/.gitignore
index 66199edd4af6ddcd1398bff13fe9065ba4309a22..a78367c17f106e4adb5f5f04f2cbd266dd61425e 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 /GIT-CFLAGS
 /GIT-LDFLAGS
 /GIT-PREFIX
+/GIT-PERL-DEFINES
 /GIT-PYTHON-VARS
 /GIT-SCRIPT-DEFINES
 /GIT-USER-AGENT

diff --git a/Makefile b/Makefile
index af847f84685af41a7da02c3c12fbdc1daa780f1c..e5e7868c6a45731e54047b8f20a4426d0f435e2d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1792,7 +1792,8 @@ perl/PM.stamp: FORCE
 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)
 
-$(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl GIT-VERSION-FILE
+PERL_DEFINES = $(PERL_PATH_SQ)
+$(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl perl/perl.mak GIT-PERL-DEFINES GIT-VERSION-FILE
        $(QUIET_GEN)$(RM) $@ $@+ && \
        INSTLIBDIR=`MAKEFLAGS= $(MAKE) -C perl -s --no-print-directory instlibdir` && \
        sed -e '1{' \
@@ -1807,6 +1808,13 @@ $(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl GIT-VERSION-FILE
        chmod +x $@+ && \
        mv $@+ $@
 
+GIT-PERL-DEFINES: FORCE
+       @FLAGS='$(PERL_DEFINES)'; \
+           if test x"$$FLAGS" != x"`cat $@ 2>/dev/null`" ; then \
+               echo >&2 "    * new perl-specific parameters"; \
+               echo "$$FLAGS" >$@; \
+           fi
+
 
 .PHONY: gitweb
 gitweb:
@@ -2494,7 +2502,8 @@ ifndef NO_TCLTK
        $(MAKE) -C git-gui clean
 endif
        $(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-BUILD-OPTIONS
-       $(RM) GIT-USER-AGENT GIT-PREFIX GIT-SCRIPT-DEFINES GIT-PYTHON-VARS
+       $(RM) GIT-USER-AGENT GIT-PREFIX
+       $(RM) GIT-SCRIPT-DEFINES GIT-PERL-DEFINES GIT-PYTHON-VARS
 
 .PHONY: all install profile-clean clean strip
 .PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell