![]() ![]() Precompiled headers are supported out-of-the-box for MSBuild projects and can be manually enabled for CMake-based projects: Select “Create a new project -> Application -> MSBuild”.Enter the name and location of the project you would like to create:.Start Visual Studio and open the VisualGDB Linux Project Wizard:.The techniques shown here will also work for embedded (e.g. We will create a simple project using the Boost library, will demonstrate how parsing large C++ headers slows down the build, and will then used precompiled headers to speed it up. Use the comment field below! It’s there for a reason.This tutorial shows how to use precompiled headers to speed up building of heavy Linux projects. Do you like this development? Any questions or opinions? Are you missing a build option to make your life with Boost easier? Tell us! It’s much better for all if we get these things right from the start instead of realizing later on that we should have done it differently. This is a labs release, so please test it and give us feedback. The client library is still compiled with Sun Studio, so there are no extra dependencies for client applications. That adds some runtime dependencies for the server on Solaris, but please note that this is only the server. Boost.Geometry is a headers-only library, so there are no extra libraries to load at runtime.īeacause of Boost, we also switched compilers from Sun Studio to GCC on Solaris. We started using Boost because of GIS, and so far it’s the only thing we use it for. ![]() That’s right, we only use the Boost header files. They have been committed upstream, and we can remove the fixes from our tree when Boost 1.56 is released and we upgrade our dependency. If you look inside the source tarball, you will see that there are a few bug fixes in there already. We should really stay put on one Boost version throughout the whole 5.7 series, so we have made sure we can patch for bugs without upgrading. That said, we don’t plan to upgrade Boost very often. So if you’re a developer and choose to build it this way, it may look easier to begin with, but you’ll have to do more work when we upgrade Boost. This sure looks even easier than what I described above, but the build will fail if you don’t switch Boost versions at the same time as we do. If the correct Boost version is part of the distro, just list it as a build dependency and everything will work out of the box. This is the way we expect Linux distros to compile MySQL. If you happen to already have Boost 1.55 installed in /usr/include or some other location where the compiler will pick it up, you can build MySQL without specifying the location of Boost. If you use an environment variable instead, use whatever you like. This is because the CMake script doesn’t do tilde expansion when you specify WITH_BOOST on the command line. There’s one gotcha: You may have noticed that I write $HOME instead of ~. The build script will understand both the commonly used BOOST_ROOT and our own WITH_BOOST. If you get tired of writing -DWITH_BOOST=$HOME/my_boost on the command line, you can set an environment variable. Just point your WITH_BOOST to the file, the directory containing the file, or the directory where you unpacked it. You can download and unpack the Boost tarball or zip yourself, or download it and let CMake unpack it. Don’t be an April fool, build the April labs release the easy way! Other ways to build However, when we change our dependency to Boost 1.56, it will download that version automatically. The build script is smart enough to recognize that you’ve already downloaded Boost and won’t do it again. ![]() If it’s not there, it will download and unpack it (in that directory) for you.ĭon’t remove the -DDOWNLOAD_BOOST=1 flag the next time you build. The CMake script will look for Boost in ~/my_boost. ![]() This is the way we expect most developers to build MySQL. DDOWNLOAD_BOOST=1 -DWITH_BOOST=$HOME/my_boost The easy wayĪssuming that you’ve just downloaded the tarball:Ĭmake. The MySQL build system will do everything for you. But don’t go running off to looking for the latest tarball just yet - there’s no need for that. This labs release requires Boost to build. Otherwise you may fail to build MySQL (bug #72172). The release contains InnoDB R-trees, the first step of our new GIS implementation, a refactored and faster parser and improved condition filtering cost calculations. You can download and run the binaries just like before, but if you want to build it from source, there are some details you should know. Please try them all, but for now let’s focus on the one called “MySQL GIS, InnoDB R-tree, Parser Refactoring”. We have a new April labs release that you can download from. ![]()
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