#40711: cmake @2.8.11.2 - downstream software loses -O3 flag -------------------------+-------------------------------- Reporter: johnsonsr@… | Owner: macports-tickets@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.2.0 Keywords: | Port: cmake -------------------------+-------------------------------- Any program newly compiled with the macports CMake '''will no longer use the -O3 flag''' when compiled as a "Release" code. This does not apply just to downstream macports installations but also to the user's custom installations that use the MacPorts-installed cmake. Basically, the CMake variable "CMAKE_CXX_FLAGS_RELEASE" is normally set to "-O3 -DNDEBUG" but an overzealous patch in the macports scripts changes this to " -DNDEBUG". Due to a change in revision 110069: {{{ eval reinplace "s|-O3||g" [glob ${worksrcpath}/Modules/{Compiler,Platform}/*.cmake] }}} the CMake flag variables are changed from {{{ ./Modules/Compiler/GNU.cmake:47: set(CMAKE_${lang}_FLAGS_RELEASE_INIT "-O3 -DNDEBUG") }}} to {{{ ./Modules/Compiler/GNU.cmake:47: set(CMAKE_${lang}_FLAGS_RELEASE_INIT " -DNDEBUG") }}} This has affected some of our scientific software that we benchmark regularly: the "Release" flag is no longer turning on optimization like it does for a standard CMake installation. This is a very subtle bug that must be fixed ASAP. -- Ticket URL: <https://trac.macports.org/ticket/40711> MacPorts <http://www.macports.org/> Ports system for OS X