GNU Autoconf Archive branch master updated. v2016.09.16-16-gc123b6f

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- Log -----------------------------------------------------------------
commit c123b6ff9ac27e6594459e13de21fabd72baaa9f
Author: Peter Simons <address@hidden>
Date:   Thu Oct 6 12:15:22 2016 +0200

    ax_extend_srcdir: fix up formatting so the HTML and info renderers are happy

commit 3924b304dba077369fdc196c59d7f2e4bd5728ec
Author: Michael Stapelberg <address@hidden>
Date:   Thu Oct 6 09:25:59 2016 +0200

    Add AX_EXTEND_SRCDIR macro.
    
    Please refer to the file itself for documentation.

commit 6d704967e972c8ce48b588fb2f7f36e22373a780
Merge: d6dd004 7facc3b
Author: Peter Simons <address@hidden>
Date:   Thu Oct 6 12:09:27 2016 +0200

    Merge pull request #98 from stapelberg/builddir
    
    ax_enable_builddir: require AC_CANONICAL_TARGET

commit 7facc3b546ea4d2e9c21e995a7248b527f4c335b
Author: Michael Stapelberg <address@hidden>
Date:   Thu Oct 6 09:10:26 2016 +0200

    ax_enable_builddir: require AC_CANONICAL_TARGET
    
    Without AC_CANONICAL_TARGET, I get the following error when running
    ./configure:
    
        checking build system type... x86_64-unknown-linux-gnu
        checking host system type... x86_64-unknown-linux-gnu
        mkdir: cannot create directory '': No such file or directory
        mkdir: cannot create directory '': No such file or directory
        ./configure: line 2470: /conftest.tmp: Permission denied
        configure: error: could not change to default builddir "./"
    
    With AC_CANONICAL_TARGET (either called explicitly in configure.ac, or
    required in AX_ENABLE_BUILDDIR), ./configure works as expected:
    
        checking build system type... x86_64-unknown-linux-gnu
        checking host system type... x86_64-unknown-linux-gnu
        checking target system type... x86_64-unknown-linux-gnu
        continue configure in default builddir "./x86_64-unknown-linux-gnu"
        ....exec 
/nix/store/nyj6xd7s1n1w8c0xdwk5ddhi7bjcyi9x-bash-4.3-p46/bin/bash 
.././configure "--srcdir=.." "--enable-builddir=x86_64-unknown-linux-gnu" "linux
        gnu"
        checking build system type... x86_64-unknown-linux-gnu
        checking host system type... x86_64-unknown-linux-gnu
        checking target system type... x86_64-unknown-linux-gnu
        checking for gsed... sed
        […]

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

Summary of changes:
 m4/ax_enable_builddir.m4 |    3 +-
 m4/ax_extend_srcdir.m4   |   86 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 m4/ax_extend_srcdir.m4


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