alarsyo/spot
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

fix compilation of core/bricks with clang++10

Browse source 
* configure.ac: Call CHECK_ATOMIC after setting the C++ options.
This is probably not necessary, but it makes more sense.
* m4/l_atomic.m4: Augment the test body with a scenario
that actually requires -latomic.
This commit is contained in:
Alexandre Duret-Lutz 2021-01-11 19:27:37 +01:00
parent 170a4ac164
commit 92ce384c80
2 changed files with 26 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

8
configure.ac
View file

@ -1,5 +1,5 @@
# -*- coding: utf-8 -*-
# Copyright (C) 2008-2020, Laboratoire de Recherche et Développement
# Copyright (C) 2008-2021, Laboratoire de Recherche et Développement
# de l'Epita (LRDE).
# Copyright (C) 2003-2007 Laboratoire d'Informatique de Paris 6
# (LIP6), département Systèmes Répartis Coopératifs (SRC), Université
@ -79,9 +79,6 @@ AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS="$CFLAGS -std=c11"])
gl_INIT
dnl Check if -latomic is required for <std::atomic>
CHECK_ATOMIC
# Use -Werror since using -fvisibility under MinGW is only a warning.
# (The option is ignored anyway since this does not make sense under windows).
AX_CHECK_COMPILE_FLAG([-Werror -fvisibility=hidden],
@ -145,6 +142,9 @@ else
fi
fi
dnl Check if -latomic is required for <std::atomic>
CHECK_ATOMIC
AX_CHECK_BUDDY
AC_CHECK_HEADERS([sys/times.h valgrind/memcheck.h spawn.h])

30
m4/l_atomic.m4
View file

@ -10,14 +10,28 @@ dnl warranty.
# Sourced from http://bugs.debian.org/797228
m4_define([_CHECK_ATOMIC_testbody], [[
#include <atomic>
#include <cstdint>
int main() {
std::atomic<int64_t> a{};
int64_t v = 5;
int64_t r = a.fetch_add(v);
return static_cast<int>(r);
}
#include <atomic>
#include <cstdint>
template< typename T >
struct Tagged
{
T t;
uint32_t _tag;
static const int tag_bits = 16;
void tag( uint32_t v ) { _tag = v; }
uint32_t tag() { return _tag; }
Tagged() noexcept : t(), _tag( 0 ) {}
Tagged( const T &t ) : t( t ), _tag( 0 ) {}
};
int main() {
std::atomic<int64_t> a{};
int64_t v = 5;
int64_t r = a.fetch_add(v);
std::atomic<Tagged<int>> value;
return static_cast<int>(r) + value.load().t;
}
]])
AC_DEFUN([CHECK_ATOMIC], [