> What would/does `-DLLVM_USE_SANITIZER=Thread` do differently than > `-DCMAKE_CXX_FLAGS=- > fsanitize=thread` here?
Using LLVM_USE_SANITIZER will prevent LLVM from adding certain link flags such as '-Wl,-z,defs', '-ffunction-sections' and '-fdata-sections' and it will force LLVM to provide some level of debug information in RELEASE mode. For sanitizers other than Thread, LLVM_USE_SANITIZER will add extra flags such as '-fsanitize-no-recover'. Also, for libc++, using LLVM_USE_SANITIZER sets the testsuite up to run with the sanitizers as well. On Thu, Jul 30, 2015 at 4:09 PM, Jonathan Roelofs <[email protected]> wrote: > > > On 7/30/15 12:47 PM, Alexey Samsonov wrote: >> >> I actually support the idea of including LLVM CMake modules from >> libc++ CMake: the logic for building instrumented LLVM and building >> instrumented libc++ should better be listed in a single place, and be >> controlled by LLVM_USE_SANITIZER options: i.e. when we configure >> libc++ from compiler-rt, we should pass -DLLVM_USE_SANITIZER=Thread >> rather than -DCMAKE_CXX_FLAGS=-fsanitize=thread. It's not possible to >> do this right now, though (for instance we build two different >> versions of MSan-libc++), but I think I'd be able to work on that >> once your patch lands and the dust settles. >> > > What would/does `-DLLVM_USE_SANITIZER=Thread` do differently than > `-DCMAKE_CXX_FLAGS=-fsanitize=thread` here? > > > Jon > > > -- > Jon Roelofs > [email protected] > CodeSourcery / Mentor Embedded _______________________________________________ cfe-commits mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
