1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
|
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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.txt
*
* 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.
*
*=========================================================================*/
// Check if blocks can be used for the GPU implementation.
// Blocks are a nonstandard extension added by Apple to their
// implementations of the C, C++, and Objective-C programming languages.
// Apple has implemented blocks both in their own branch of the
// GNU Compiler Collection and in the Clang LLVM compiler front end.
// For example macports gcc will not support Blocks on OS X because
// it does not use Apple's headers.
// You can recompile your gcc on OS X if needed, using:
// --with-native-system-header-dir=/usr/include
// --with-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
// This code was tested on OS X 10.10 with:
// Apple LLVM version 6.0 (clang-600.0.54): Compiles
// Homebrew gcc 4.9.2: Compiles
// Macports gcc 4.9.2: Fails
// Macports gcc 4.9.2: with native headers : Compiles
int main(void)
{
typedef int (^IntBlock)();
return 0;
}
|