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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require 'mkmf'
extension_name = 'atomic_reference'
dir_config(extension_name)
have_header "libkern/OSAtomic.h"
def compiler_is_gcc
if CONFIG["GCC"] && CONFIG["GCC"] != ""
return true
elsif ( # This could stand to be more generic... but I am afraid.
CONFIG["CC"] =~ /\bgcc\b/
)
return true
end
return false
end
if compiler_is_gcc
case CONFIG["arch"]
when /mswin32|mingw|solaris/
$CFLAGS += " -march=native"
when 'i686-linux'
$CFLAGS += " -march=i686"
end
end
try_run(<<CODE,$CFLAGS) && ($defs << '-DHAVE_GCC_SYNC')
int main() {
__sync_synchronize();
return 0;
}
CODE
create_makefile(extension_name)
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