mirror of
https://github.com/dashpay/dash.git
synced 2024-12-27 04:52:59 +01:00
41 lines
944 B
Plaintext
41 lines
944 B
Plaintext
|
# Some versions of gcc/libstdc++ require linking with -latomic if
|
||
|
|
# using the C++ atomic library.
|
||
|
|
#
|
||
|
|
# 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);
|
||
|
|
}
|
||
|
|
]])
|
||
|
|
|
||
|
|
AC_DEFUN([CHECK_ATOMIC], [
|
||
|
|
|
||
|
|
AC_LANG_PUSH(C++)
|
||
|
|
|
||
|
|
AC_MSG_CHECKING([whether std::atomic can be used without link library])
|
||
|
|
|
||
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
|
||
|
|
AC_MSG_RESULT([yes])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT([no])
|
||
|
|
LIBS="$LIBS -latomic"
|
||
|
|
AC_MSG_CHECKING([whether std::atomic needs -latomic])
|
||
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
|
||
|
|
AC_MSG_RESULT([yes])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT([no])
|
||
|
|
AC_MSG_FAILURE([cannot figure our how to use std::atomic])
|
||
|
|
])
|
||
|
|
])
|
||
|
|
|
||
|
|
AC_LANG_POP
|
||
|
|
])
|