61e951617c
switching to std::unique_ptr<> in 52c9f62 caused some trouble for
users of "older" compilers: they needed to add the --std=cxx11 flag
by hand. to make life more convenient, m4/ax_cxx_compile_stdcxx.m4
and m4/ax_cxx_compile_stdcxx_11.m4 are added to do the right thing.
in my tests, the last "good" compiler is gcc-4.8, gcc-4.7 does not
support the required c++11 standard.
clang++-3.5 also works.
39 lines
1.6 KiB
Text
39 lines
1.6 KiB
Text
# ============================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
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# ============================================================================
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#
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# SYNOPSIS
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#
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# AX_CXX_COMPILE_STDCXX_11([ext|noext], [mandatory|optional])
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#
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# DESCRIPTION
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#
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# Check for baseline language coverage in the compiler for the C++11
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# standard; if necessary, add switches to CXX and CXXCPP to enable
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# support.
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#
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# This macro is a convenience alias for calling the AX_CXX_COMPILE_STDCXX
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# macro with the version set to C++11. The two optional arguments are
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# forwarded literally as the second and third argument respectively.
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# Please see the documentation for the AX_CXX_COMPILE_STDCXX macro for
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# more information. If you want to use this macro, you also need to
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# download the ax_cxx_compile_stdcxx.m4 file.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
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# Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
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# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
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# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
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# Copyright (c) 2015 Paul Norman <penorman@mac.com>
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# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 17
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AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX])
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AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [AX_CXX_COMPILE_STDCXX([11], [$1], [$2])])
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