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[PATCH] perl: regenerate perl.mak if perl -V changes

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Mar 29, 2017, 13:29 UTC
Message-ID
<20170329132924.31321-1-avarab@gmail.com>
In-Reply-To
<20170329021807.voys2r65knn6tdwg@sigill.intra.peff.net>

Change the perl/perl.mak build process so that the file is re-made if the output of "perl -V" changes.

Before this change updating e.g. /usr/bin/perl to a new major version would cause the next "make" command to fail, since perl.mak has hardcoded paths to perl library paths retrieved from its first run.

Now the logic added in commit ee9be06770 ("perl: detect new files in MakeMaker builds", 2012-07-27) is extended to regeneratio perl/perl.mak if there's any change to "perl -V".

This will in some cases redundantly trigger perl/perl.mak to be re-made, e.g. if @INC is modified in ways the build process doesn't care about through sitecustomize.pl, but the common case is that we just do the right thing and re-generate perl/perl.mak when needed.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
On Wed, Mar 29, 2017 at 4:18 AM, Jeff King <peff@peff.net> wrote:
> On Tue, Mar 28, 2017 at 09:03:43PM -0400, Jeffrey Walton wrote:
>[...]

At first I thought Jeffrey was running into this longstanding issue with the perl Makefile. Looks like not, and he just wasn't passing PERL_PATH correctly, but fix this related issue while it's fresh in my mind.

 Makefile | 1 +
 1 file changed, 1 insertion(+)
diff --git a/Makefile b/Makefile
index c80fec2920..c0c5510238 100644
--- a/Makefile
+++ b/Makefile
@@ -1850,6 +1850,7 @@ perl/perl.mak: perl/PM.stamp
 
 perl/PM.stamp: FORCE
 	@$(FIND) perl -type f -name '*.pm' | sort >$@+ && \
+	$(PERL_PATH) -V >$@+ && \
 	{ cmp $@+ $@ >/dev/null 2>/dev/null || mv $@+ $@; } && \
 	$(RM) $@+
 
-- 
2.11.0
Previous: Jeff KingNext: Ævar Arnfjörð Bjarmason
Message 3 of 10 in “Can't locate ExtUtils/MakeMaker.pm in @INC”
  1. Jeffrey WaltonMar 29, 2017
  2. Jeff KingMar 29, 2017
  3. perl: regenerate perl.mak if perl -V changesÆvar Arnfjörð Bjarmason, Mar 29, 2017
  4. perl: regenerate perl.mak if perl -V changesÆvar Arnfjörð Bjarmason, Mar 29, 2017
  5. stefan.naewe@atlas-elektronik.comMar 29, 2017
  6. perl: regenerate perl.mak if perl -V changesÆvar Arnfjörð Bjarmason, Mar 29, 2017
  7. Jeff KingMar 29, 2017
  8. Ævar Arnfjörð BjarmasonMar 29, 2017
  9. Junio C HamanoMar 29, 2017
  10. Jeffrey WaltonMar 29, 2017

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