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m4: Add missing C++17 related stub and possibly helpful message.

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This commit is contained in:
Jason Volk 2017-10-15 21:32:10 -07:00
parent 678ff574b5
commit df4915dec4
1 changed files with 10 additions and 2 deletions
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12
m4/ax_cxx_compile_stdcxx.m4
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@ -47,7 +47,7 @@ dnl (serial version number 13).
AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
m4_if([$1], [11], [],
[$1], [14], [],
[$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
[$1], [17], [],
[m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
m4_if([$2], [], [],
[$2], [gnu], [],
@ -119,7 +119,7 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
AC_LANG_POP([C++])
if test x$ax_cxx_compile_cxx$1_required = xtrue; then
if test x$ac_success = xno; then
AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
AC_MSG_ERROR([*** A compiler with support for C++$1 with SD-6 $4 language features is required. Ubuntu users may want to try: sudo add-apt-repository ppa:ubuntu-toolchain-r/test; sudo apt-get update])
fi
fi
if test x$ac_success = xno; then
@ -149,6 +149,14 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
)
dnl Test body for checking C++17 support
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17],
_AX_CXX_COMPILE_STDCXX_testbody_new_in_11($1)
_AX_CXX_COMPILE_STDCXX_testbody_new_in_14($1)
)
dnl Tests for new features in C++11
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[