[GHC] #8825: ghc can't determine gcc version on ru_RU locale

[GHC]

#8825: ghc can't determine gcc version on ru_RU locale
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              Reporter:  slyfox      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.1-rc1
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:  D185        |
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Comment (by Sergei Trofimovich <slyfox@…>):

 In [changeset:"4d4d07704ee78221607a18b8118294b0aea1bac4/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="4d4d07704ee78221607a18b8118294b0aea1bac4"
 systools: fix gcc version detecton on non-english locale

 Summary:
 ghc runs 'gcc -v' to check if we run under vanilla gcc
 or disaguised clang by checking for string

     "gcc version <something>"

 But this check does not always work as gcc has that string
 localized via gettext mechanism:

     (some gcc's locale strings)
     be.po-msgstr "версія gcc %s\n"
     da.po-msgstr "GCC version %s\n"
     de.po-msgstr "gcc-Version %s %s\n"
     el.po-msgstr "έκδοση gcc %s\n"
     ...

 To ping gcc to English locale we now override environment
 variable with 'LANGUAGE=en' value.

 Fixes Issue #8825

 Signed-off-by: Sergei Trofimovich <slyfox at gentoo.org>

 Test Plan: validate

 Reviewers: austin

 Reviewed By: austin

 Subscribers: simonmar, ezyang, carter

 Differential Revision: https://phabricator.haskell.org/D185

 GHC Trac Issues: #8825
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8825#comment:8>
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