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Verified Commit 152b2de5 authored by Sébastien Villemot's avatar Sébastien Villemot
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Enforce C++17 at the compiler level

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configure.ac
+ 1
− 1
View file @ 152b2de5
......@@ -25,7 +25,7 @@ AM_INIT_AUTOMAKE([1.11 -Wall -Wno-portability foreign no-dist-gzip dist-xz tar-p
AC_PROG_CC
AC_PROG_CXX
AX_CXX_COMPILE_STDCXX_14
AX_CXX_COMPILE_STDCXX_17
AC_CANONICAL_HOST
case ${host_os} in
......
license.txt
+ 3
− 2
View file @ 152b2de5
......@@ -27,14 +27,15 @@ Copyright: 2008-2009 Thomas Porschberg <thomas@randspringer.de>
License: FSFAP
Files: m4/ax_cxx_compile_stdcxx.m4
m4/ax_cxx_compile_stdcxx_14.m4
m4/ax_cxx_compile_stdcxx_17.m4
Copyright: 2008 Benjamin Kosnik <bkoz@redhat.com>
2012 Zack Weinberg <zackw@panix.com>
2013 Roy Stogner <roystgnr@ices.utexas.edu>
2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
2015 Paul Norman <penorman@mac.com>
2015 Moritz Klammler <moritz@klammler.eu>
2016 Krzesimir Nowak <qdlacz@gmail.com>
2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
2019 Enji Cooper <yaneurabeya@gmail.com>
License: FSFAP
Files: m4/ax_latex_class.m4 m4/ax_tex_test.m4
......
m4/ax_cxx_compile_stdcxx.m4
+ 7
− 38
View file @ 152b2de5
......@@ -33,19 +33,19 @@
# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
# Copyright (c) 2015 Paul Norman <penorman@mac.com>
# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
# Copyright (c) 2016 Krzesimir Nowak <qdlacz@gmail.com>
# Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
# Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 7
#serial 11
dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
dnl (serial version number 13).
AX_REQUIRE_DEFINED([AC_MSG_WARN])
AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
[$1], [14], [ax_cxx_compile_alternatives="14 1y"],
......@@ -61,14 +61,6 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
[m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
AC_LANG_PUSH([C++])dnl
ac_success=no
AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
ax_cv_cxx_compile_cxx$1,
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
[ax_cv_cxx_compile_cxx$1=yes],
[ax_cv_cxx_compile_cxx$1=no])])
if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
ac_success=yes
fi
m4_if([$2], [noext], [], [dnl
if test x$ac_success = xno; then
......@@ -139,7 +131,6 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
[define if the compiler supports basic C++$1 syntax])
fi
AC_SUBST(HAVE_CXX$1)
m4_if([$1], [17], [AC_MSG_WARN([C++17 is not yet standardized, so the checks may change in incompatible ways anytime])])
])
......@@ -199,11 +190,13 @@ namespace cxx11
struct Base
{
virtual ~Base() {}
virtual void f() {}
};
struct Derived : public Base
{
virtual ~Derived() override {}
virtual void f() override {}
};
......@@ -587,20 +580,12 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
#error "This is not a C++ compiler"
#elif __cplusplus <= 201402L
#elif __cplusplus < 201703L
#error "This is not a C++17 compiler"
#else
#if defined(__clang__)
#define REALLY_CLANG
#else
#if defined(__GNUC__)
#define REALLY_GCC
#endif
#endif
#include <initializer_list>
#include <utility>
#include <type_traits>
......@@ -608,16 +593,12 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
namespace cxx17
{
#if !defined(REALLY_CLANG)
namespace test_constexpr_lambdas
{
// TODO: test it with clang++ from git
constexpr int foo = [](){return 42;}();
}
#endif // !defined(REALLY_CLANG)
namespace test::nested_namespace::definitions
{
......@@ -852,12 +833,9 @@ namespace cxx17
}
#if !defined(REALLY_CLANG)
namespace test_template_argument_deduction_for_class_templates
{
// TODO: test it with clang++ from git
template <typename T1, typename T2>
struct pair
{
......@@ -876,7 +854,6 @@ namespace cxx17
}
}
#endif // !defined(REALLY_CLANG)
namespace test_non_type_auto_template_parameters
{
......@@ -890,12 +867,9 @@ namespace cxx17
}
#if !defined(REALLY_CLANG)
namespace test_structured_bindings
{
// TODO: test it with clang++ from git
int arr[2] = { 1, 2 };
std::pair<int, int> pr = { 1, 2 };
......@@ -927,14 +901,10 @@ namespace cxx17
const auto [ x3, y3 ] = f3();
}
#endif // !defined(REALLY_CLANG)
#if !defined(REALLY_CLANG)
namespace test_exception_spec_type_system
{
// TODO: test it with clang++ from git
struct Good {};
struct Bad {};
......@@ -952,7 +922,6 @@ namespace cxx17
static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
}
#endif // !defined(REALLY_CLANG)
namespace test_inline_variables
{
......@@ -977,6 +946,6 @@ namespace cxx17
} // namespace cxx17
#endif // __cplusplus <= 201402L
#endif // __cplusplus < 201703L
]])
m4/ax_cxx_compile_stdcxx_14.m4 → m4/ax_cxx_compile_stdcxx_17.m4
+ 7
− 6
View file @ 152b2de5
# =============================================================================
# https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_14.html
# https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_17.html
# =============================================================================
#
# SYNOPSIS
#
# AX_CXX_COMPILE_STDCXX_14([ext|noext], [mandatory|optional])
# AX_CXX_COMPILE_STDCXX_17([ext|noext], [mandatory|optional])
#
# DESCRIPTION
#
# Check for baseline language coverage in the compiler for the C++14
# Check for baseline language coverage in the compiler for the C++17
# standard; if necessary, add switches to CXX and CXXCPP to enable
# support.
#
# This macro is a convenience alias for calling the AX_CXX_COMPILE_STDCXX
# macro with the version set to C++14. The two optional arguments are
# macro with the version set to C++17. The two optional arguments are
# forwarded literally as the second and third argument respectively.
# Please see the documentation for the AX_CXX_COMPILE_STDCXX macro for
# more information. If you want to use this macro, you also need to
......@@ -22,13 +22,14 @@
# LICENSE
#
# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
# Copyright (c) 2016 Krzesimir Nowak <qdlacz@gmail.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 5
#serial 2
AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX])
AC_DEFUN([AX_CXX_COMPILE_STDCXX_14], [AX_CXX_COMPILE_STDCXX([14], [$1], [$2])])
AC_DEFUN([AX_CXX_COMPILE_STDCXX_17], [AX_CXX_COMPILE_STDCXX([17], [$1], [$2])])
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