mirrors/php-src
0
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2024-11-23 18:04:36 +08:00
Code Issues Packages Projects Releases Wiki Activity

build: Extend m4 to support C++20

Browse Source 
Signed-off-by: Anatol Belski <ab@php.net>
This commit is contained in:
Anatol Belski 2022-03-20 00:30:15 +01:00
parent bf2867bc72
commit dd81dd9264
No known key found for this signature in database
GPG Key ID: BCAA30EA9C0D5763
1 changed files with 47 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
build/php_cxx_compile_stdcxx.m4
View File

@ -6,7 +6,7 @@ dnl PHP_CXX_COMPILE_STDCXX(version, mandatory|optional, var_name_to_put_switch_i
dnl
dnl ARGUMENTS
dnl
dnl first arg - version as 11, 14 or 17
dnl first arg - version as 11, 14, 17 or 20
dnl second arg - if mandatory, the configure will fail when no features found.
dnl Optional will make configure silently continue
dnl third arg - a variable name where the corresponding switch would be put. If
@ -26,6 +26,7 @@ AC_DEFUN([PHP_CXX_COMPILE_STDCXX], [dnl
m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
[$1], [14], [ax_cxx_compile_alternatives="14 1y"],
[$1], [17], [ax_cxx_compile_alternatives="17 1z"],
[$1], [20], [ax_cxx_compile_alternatives="20"],
[m4_fatal([invalid first argument `$1' to PHP_CXX_COMPILE_STDCXX])])dnl
m4_if([$2], [], [ax_cxx_compile_cxx$1_required=true],
[$2], [mandatory], [ax_cxx_compile_cxx$1_required=true],
@ -88,19 +89,21 @@ dnl
# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
# Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
# Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com>
# Copyright (c) 2020 Jason Merrill <jason@redhat.com>
# Copyright (c) 2021 Jörn Heusipp <osmanx@problemloesungsmaschine.de>
#
# 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.
dnl Test body for checking C++11 support
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
_AX_CXX_COMPILE_STDCXX_testbody_new_in_11
)
dnl Test body for checking C++14 support
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
@ -108,12 +111,24 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
_AX_CXX_COMPILE_STDCXX_testbody_new_in_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
_AX_CXX_COMPILE_STDCXX_testbody_new_in_14
_AX_CXX_COMPILE_STDCXX_testbody_new_in_17
)
dnl Test body for checking C++20 support
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_20],
_AX_CXX_COMPILE_STDCXX_testbody_new_in_11
_AX_CXX_COMPILE_STDCXX_testbody_new_in_14
_AX_CXX_COMPILE_STDCXX_testbody_new_in_17
_AX_CXX_COMPILE_STDCXX_testbody_new_in_20
)
dnl Tests for new features in C++11
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
@ -909,3 +924,33 @@ namespace cxx17
#endif // __cplusplus < 201703L
]])
dnl Tests for new features in C++20
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_20], [[
#ifndef __cplusplus
#error "This is not a C++ compiler"
#elif __cplusplus < 202002L
#error "This is not a C++20 compiler"
#else
#include <version>
namespace cxx20
{
// As C++20 supports feature test macros in the standard, there is no
// immediate need to actually test for feature availability on the
// Autoconf side.
} // namespace cxx20
#endif // __cplusplus < 202002L
]])