llvm

Unsurprisingly the new update of OSX Mojave broke my llvm installation in Homebrew, these are the steps I tried: xcode-select --install # Complained, so I installed commandLineTools from here https://developer.apple.com/download/more/ xcode-select -p /Library/Developer/CommandLineTools xcode-select --install # Now says installed sudo xcodebuild -license # Fails, as it says I only have CommandLineTools installed in /Library/Developer/CommandLineTools not xcode # Try something else (all versions) brew uninstall --force llvm brew install llvm # yay v7 how exciting # Only it still don't work clang

I have a third party project in my Xcode workspace (it's a dependency for my main project) and I want Xcode to ignore all build warnings from that third party project. Preferably I'd like to ignore all build warnings for the Vendor/* group in my project since that's where I put all my third party code. Possible? Yes, it's possible, but only if you compile the third-party files in a separate target. This way, you can set different compiler flags. Let's say your main target is an application. You defined your build settings, as well as the compiler warning flags. Now you want to use some third

On Mac OS, if I run clang --version , I get: Apple LLVM version 6.0 (clang-600.0.34.4) (based on LLVM 3.5svn) Target: x86_64-apple-darwin14.0.0 Thread model: posix Since LLVM official page suggests that the current LLVM version is 3.5, it seems that Apple clang versioning is distinct from the open-source LLVM. The output (based on LLVM 3.5svn) suggests that probably it is 3.5 on my machine as well. Now I got here since I wanted to compile a C++14 file, using g++ -std=c++14 main.cc . This page suggests that this option should work on clang 3.5. However, it works only with -std=c++1y , which

I think this is part of the problem at No type named 'unique_ptr' in namespace 'std' when compiling under LLVM/Clang . According to Marshall Clow , I can detect -stdlib=libc++ via _LIBCPP_VERSION : If you're writing cross-platform code, sometimes you need to know what standard library you are using. In theory, they should all offer equivalent functionality, but that's just theory. Sometimes you just need to know. The best way to check for libc++ is to look for the preprocessor symbol _LIBCPP_VERSION. If that's defined, then you're using libc++. #ifdef _LIBCPP_VERSION // libc++ specific code

I am getting an error Can't unroll; loop not terminated by a conditional branch for the following code: for(i=0 ; j<10 && i<5 ; i++) j= j+2; I am using the following command for unrolling loops in a file a.bc : opt -loops -loop-rotate -loop-simplify -loop-unroll -unroll-count=3 -unroll-allow-partial -debug a.bc -o a.loop.bc Is there a way to unroll loops avoiding this error? use this command and it should work (I have tested it on LLVM 3.6 and 3.7) opt -mem2reg -simplifycfg -loops -lcssa -loop-simplify -loop-rotate -loop-unroll -unroll-count=3 -unroll-allow-partial -debug a.bc -o a.loop.bc you