[PATCH v2] perl: regenerate perl.mak if perl -V changes

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>
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Maybe this'll set some sort of record for a v2 submission, but anyway, this should clearly be >> not >, we don't want to overwrite the list of *.pm files we just added.

 Makefile | 1 +
 1 file changed, 1 insertion(+)