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Add a check for C11 atomics and stdatomic.h

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Martin Kroeker 2020-07-18 16:57:41 +00:00 committed by GitHub
parent d8e2edfc20
commit 4afd11dae5
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1 changed files with 24 additions and 0 deletions
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c_check
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@ -249,6 +249,28 @@ if (($architecture eq "x86") || ($architecture eq "x86_64")) {
}
}
$c11_atomics = 0;
if ($data =~ /HAVE_C11/) {
eval "use File::Temp qw(tempfile)";
if ($@){
warn "could not load PERL module File::Temp, so could not check compiler compatibility with C11";
$c11_atomics = 0;
} else {
($fh,$tmpf) = tempfile( SUFFIX => '.c' , UNLINK => 1 );
print $tmpf "#include <stdatomic.h>\nint main(void){}\n";
$args = " -c -o $tmpf.o $tmpf";
my @cmd = ("$compiler_name $flags $args >/dev/null 2>/dev/null");
system(@cmd) == 0;
if ($? != 0) {
$c11_atomics = 0;
} else {
$c11_atomics = 1;
}
unlink("$tmpf.o");
}
}
$data = `$compiler_name $flags -S ctest1.c && grep globl ctest1.s | head -n 1 && rm -f ctest1.s`;
$data =~ /globl\s([_\.]*)(.*)/;
@ -352,6 +374,8 @@ print CONFFILE "#define __32BIT__\t1\n" if $binformat eq bin32;
print CONFFILE "#define __64BIT__\t1\n" if $binformat eq bin64;
print CONFFILE "#define FUNDERSCORE\t$need_fu\n" if $need_fu ne "";
print CONFFILE "#define HAVE_MSA\t1\n" if $have_msa eq 1;
print CONFFILE "#define HAVE_C11\t1\n" if $c11_atomics eq 1;
if ($os eq "LINUX") {