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Update various GNU configuration scripts to latest versions

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See #18459
This commit is contained in:
Paul Cornett
2019-08-07 09:00:09 -07:00
parent 4c94ad69d8
commit b2d1343fbc
5 changed files with 1980 additions and 3431 deletions
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45
build/aclocal/ax_cxx_compile_stdcxx.m4
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@@ -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
]])