[Bug libc/11840] New: Bad use of the autoconf cache for -fgnu89-inline

["viriketo at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

(I think this affects any triplet)

The current implementation made the -fgnu89-inline had a double meaning (yes/no
or the compiler flag). In case of cache reusage of the variable containing the
compiler flag, it was considered as a "!= yes", and then nullified, ending in no
-fgnu89-inline flag used at the 'configure' step run from the glibc Makefile.

Here are the offending lines of code:
if test $libc_cv_gnu89_inline = yes; then
  libc_cv_gnu89_inline=-fgnu89-inline
else
  libc_cv_gnu89_inline=
fi

I will attach a patch.

-- 
           Summary: Bad use of the autoconf cache for -fgnu89-inline
           Product: glibc
           Version: 2.11
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: viriketo at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: mips64el-unknown-linux-gnu
  GCC host triplet: mips64el-unknown-linux-gnu
GCC target triplet: mips64el-unknown-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=11840

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