GNU Autoconf Archive branch master updated. v2015.02.04-23-g1125e05

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- Log -----------------------------------------------------------------
commit 1125e05fff010c0a3879cc3bb677a32dcd5ec2c8
Author: David King <address@hidden>
Date:   Fri Feb 20 10:28:08 2015 +0000

    ax_compiler_flags: Only check for C++ if AC_PROG_CXX is called
    
    The previous behavior of the macro was to use a C compiler, but when C++
    support was added, it created an unconditional dependency on a C++
    compiler. This is undesirable for most C projects, and slows down
    configure considerably by adding unnecessary checks.
    
    Add an internal _AX_COMPILER_FLAGS_LANG macro, with the desired language
    as the first argument. Only require the macro for the corresponding
    compiler warning flags if AC_PROG_lang has been called. Enable C support
    by default.

commit 9b3173af917403223157c07f1dcddd9c30f4eb6b
Author: David King <address@hidden>
Date:   Fri Feb 20 09:02:46 2015 +0000

    ax_compiler_flags_cflags: Ensure the current language is C

-----------------------------------------------------------------------

Summary of changes:
 m4/ax_compiler_flags.m4        |   32 ++++++++++++++++++++++++--------
 m4/ax_compiler_flags_cflags.m4 |    6 +++++-
 2 files changed, 29 insertions(+), 9 deletions(-)


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