[RFC/PATCH v3] gitweb: respect $GITPERLLIB

[Lea Wiemann <lewiemann@gmail.com>]

gitweb/gitweb.cgi now respects $GITPERLLIB, like the Perl-based Git
commands.

This patch is not for inclusion, it'll be squashed with a larger
commit.
---
Junio C Hamano wrote:
> This part seems to duplicate quite a bit of sed insn used elsewhere, and
> we may want to factor the common part out, perhaps like this...

Thanks!  This needs some tender loving quoting though; diff to your
version:

   diff --git a/Makefile b/Makefile
   index e6fd8ac..92a802f 100644
   --- a/Makefile
   +++ b/Makefile
   @@ -1065,13 +1065,13 @@ $(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
    perl/perl.mak: GIT-CFLAGS perl/Makefile perl/Makefile.PL
    	$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
 
    PERL_USE_LIB_REWRITE = \
    	-e '1{' \
   -	-e '	s|#!.*perl|#!$(PERL_PATH_SQ)|' \
   +	-e '	s|\#!.*perl|\#!$(PERL_PATH_SQ)|' \
    	-e '	h' \
   -	-e '	s=.*=use lib (split(/:/, $$ENV{GITPERLLIB} || "@@INSTLIBDIR@@"));=' \
   +	-e '	s=.*=use lib (split(/:/, \$$ENV{GITPERLLIB} || \"@@INSTLIBDIR@@\"));=' \
    	-e '	H' \
    	-e '	x' \
    	-e '}' \
    	-e 's|@@INSTLIBDIR@@|'"$$INSTLIBDIR"'|g' \
    	-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g'

I wonder though if that's too brittle or unmaintainable and we should
rather use the explicit version in v2 (even if it duplicated code);
I'd prefer v2 off the top of my head.

Also, note that I really only did trial-and-error quoting here. ;-)

-- Lea

 Makefile |   25 ++++++++++++++-----------
 1 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/Makefile b/Makefile
index fda9133..92a802f 100644
--- a/Makefile
+++ b/Makefile
@@ -1065,25 +1065,28 @@ $(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
 perl/perl.mak: GIT-CFLAGS perl/Makefile perl/Makefile.PL
 	$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
 
+PERL_USE_LIB_REWRITE = \
+	-e '1{' \
+	-e '	s|\#!.*perl|\#!$(PERL_PATH_SQ)|' \
+	-e '	h' \
+	-e '	s=.*=use lib (split(/:/, \$$ENV{GITPERLLIB} || \"@@INSTLIBDIR@@\"));=' \
+	-e '	H' \
+	-e '	x' \
+	-e '}' \
+	-e 's|@@INSTLIBDIR@@|'"$$INSTLIBDIR"'|g' \
+	-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g'
+
 $(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl
 	$(QUIET_GEN)$(RM) $@ $@+ && \
 	INSTLIBDIR=`MAKEFLAGS= $(MAKE) -C perl -s --no-print-directory instlibdir` && \
-	sed -e '1{' \
-	    -e '	s|#!.*perl|#!$(PERL_PATH_SQ)|' \
-	    -e '	h' \
-	    -e '	s=.*=use lib (split(/:/, $$ENV{GITPERLLIB} || "@@INSTLIBDIR@@"));=' \
-	    -e '	H' \
-	    -e '	x' \
-	    -e '}' \
-	    -e 's|@@INSTLIBDIR@@|'"$$INSTLIBDIR"'|g' \
-	    -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
-	    $@.perl >$@+ && \
+	sed $(PERL_USE_LIB_REWRITE) $@.perl >$@+ && \
 	chmod +x $@+ && \
 	mv $@+ $@
 
 gitweb/gitweb.cgi: gitweb/gitweb.perl
 	$(QUIET_GEN)$(RM) $@ $@+ && \
-	sed -e '1s|#!.*perl|#!$(PERL_PATH_SQ)|' \
+	INSTLIBDIR=`MAKEFLAGS= $(MAKE) -C perl -s --no-print-directory instlibdir` && \
+	sed $(PERL_USE_LIB_REWRITE) \
 	    -e 's|++GIT_VERSION++|$(GIT_VERSION)|g' \
 	    -e 's|++GIT_BINDIR++|$(bindir)|g' \
 	    -e 's|++GITWEB_CONFIG++|$(GITWEB_CONFIG)|g' \
-- 
1.5.6.85.g0a2e.dirty