[DRE-maint] Bug#721674: gem2deb: should build extensions in verbose mode

[Cédric Boutillier]

Hi,


there is no (clean) way to have in a programmatic way a Makefile with "V = 1"
during extension building, since in rubygems/ext/ext_conf_builder.rb,
make is run the next line just after the creation of the Makefile with
"V = 0".

The only way to override the value of V is to pass V=1 to make as an
argument. Ruby1.9.1 and ruby2.0 check the environment variable 'make' to
determine how to invoke make. The attached patch overrides this
environment variable to append V=1 (and defaults to 'make V=1' if it was
not set) the time for gem2deb to build the extension, and then restore
its value.

This patch is committed in the verbose-build branch of the gem2deb
repository at git.debian.org/git/pkg-ruby-extras/gem2deb.git.

Cheers,

Cédric
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