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Polly

Join the chat at https://gitter.im/polly-cmake/Lobby

Collection of CMake toolchain files and scripts.

Linux/OSX Windows
Build Status Build Status

Every toolchain defines compiler/flags and two variables:

  • POLLY_TOOLCHAIN_NAME
  • POLLY_TOOLCHAIN_TAG

First variable will be printed while processing file:

-- [polly] Used toolchain: Name of toolchain A
-- The CXX compiler identification is Clang 5.0.0
-- Check for working CXX compiler: /usr/bin/c++
-- [polly] Used toolchain: Name of toolchain A
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- [polly] Used toolchain: Name of toolchain A
-- Detecting CXX compiler ABI info - done
-- [polly] Used toolchain: Name of toolchain A
-- Configuring done
-- Generating done
-- Build files have been written to: ...

Second variable coincide with toolchain file name and can be used to define CMAKE_INSTALL_PREFIX like:

set(CMAKE_INSTALL_PREFIX "${PROJECT_SOURCE_DIR}/_install/${POLLY_TOOLCHAIN_TAG}")

In this case targets can coexist simultaneously:

 - Project\ -
            - CMakeLists.txt
            - sources\
            - documentation\
            - ...
            - _install\ -
                        - toolchain-A\
                        - toolchain-B\
                        - toolchain-C\
                        - ...

Note: This is a core idea of the tagged builds in hunter package manager.

New documentation

Toolchains

Android

iOS

Raspberry Pi

Clang tools

Windows

Cross compiling

Usage

Just define CMAKE_TOOLCHAIN_FILE variable:

> cmake -H. -B_builds/clang-libstdcxx -DCMAKE_TOOLCHAIN_FILE=${POLLY_ROOT}/clang-libstdcxx.cmake -DCMAKE_VERBOSE_MAKEFILE=ON
-- [polly] Used toolchain: clang / GNU Standard C++ Library (libstdc++) / c++11 support
-- The CXX compiler identification is Clang 5.0.0
-- Check for working CXX compiler: /usr/bin/c++
-- [polly] Used toolchain: clang / GNU Standard C++ Library (libstdc++) / c++11 support
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- [polly] Used toolchain: clang / GNU Standard C++ Library (libstdc++) / c++11 support
-- Detecting CXX compiler ABI info - done
-- Configuring done
-- Generating done
-- Build files have been written to: /.../_builds/make-debug

Take a look at make output, you must see -stdlib=libstdc++ string:

> cmake --build _builds/clang_libstdcxx
/usr/bin/c++ -std=c++11 -stdlib=libstdc++ -o CMakeFiles/.../main.cpp.o -c /.../main.cpp

polly.py

This is a python script that wrap cmake for you and automatically set:

  • build directory for your toolchain. E.g. _builds/xcode, _builds/libcxx-Debug, _builds/nmake-Release
  • local install directory. E.g. _install/vs-12-2013-x64, _install/libcxx
  • start an IDE project (Xcode, Visual Studio) if option --open passed
  • run ctest after the build done if option --test passed
  • run cpack after the build done if option --pack passed
  • create OS X/iOS framework if option --framework passed (can be used for broken iOS framework creation on CMake)

Example of usage (also see polly.py --help):

  • build Debug Xcode project:
    • polly.py --toolchain xcode --config Debug (_builds/xcode)
  • build and test Release Makefile project with libcxx:
    • polly.py --toolchain libcxx --config Release --test (_builds/libcxx-Release)
  • install Debug Xcode project:
    • polly.py --toolchain xcode --config Debug --install (_builds/xcode, _install/xcode)

Examples

See examples. Please read coding style and agreements before start looking through examples (may explain a lot). Take a look at the Travis config files: mac and linux, it's quite self-explanatory.

Contributing

See CONTRIBUTING.md.

Links