CMake build tree batching tool
Easily batch-build cmake projects!
cmany is a command line tool to easily build variations of a CMake C/C++ project. It combines different compilers, cmake build types, bundles of compilation flags, processor architectures and operating systems. Each of these items can also have associated compilation flags.
For example, to configure and build a project combining clang++ and g++ with both Debug and Release:
$ cmany build -c clang++,g++ -t Debug,Release path/to/CMakeLists.txt
The command above will result in four different build trees, placed by default under a build subdirectory in the current working directory:
$ ls build/* build/linux-x86_64-clang++3.9-Debug build/linux-x86_64-clang++3.9-Release build/linux-x86_64-gcc++6.1-Debug build/linux-x86_64-gcc++6.1-Release
Each build tree is obtained by first configuring the project with the items in each combination, and then invoking cmake --build to build the project at once.
You can also use cmany just to simplify your cmake workflow! These two command sequences have the same effect (b is an alias to build):
$ mkdir build
$ cd build
$ cmake ..
$ cmake --build .
$ cmany b
- Easily configures and builds many variations of your project with one simple command.
- Saves the tedious and error-prone work of dealing with many build trees by hand.
- Sensible defaults: cmany build will create and build a single project using CMake’s defaults.
- Transparently pass flags (compiler flags, processor defines or cmake cache variables) to any or all of the builds.
- Useful for build comparison and benchmarking. You can easily setup bundles of flags, aka variants.
- Useful for validating and unit-testing your project with different compilers and flags.
- Useful for creating distributions of your project.
- Avoids a full rebuild when the build type is changed. Although this feature already exists in multi-configuration cmake generators like Visual Studio, it is missing from mono-configuration generators like Unix Makefiles.
- Runs arbitrary commands in every build tree or install tree.
- Full control over how the build items are combined.
cmany is in alpha state, under current development.
Limitations & Known issues
- cmany invokes the compilers given to it to find their name and version. So far, this successfully works with Visual Studio, gcc (also with arm-linux and mips-linux counterparts), clang, icc and zapcc. However, the current implementation for guessing the name and version is fragile and may fail in some compilers which were not tested. Please submit a bug or PR if you see such a failure.
- Though cmany works in OS X with gcc and clang, using Xcode has not been tested at all. Get in touch if you are interested in getting cmany to work with Xcode.
- Pure C projects (ie not C++) should work but have not yet been tested. Some bugs may be present.
cmany is permissively licensed under the MIT license.
Copyright (c) 2016, Joao Paulo Magalhaes <email@example.com>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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