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| <h1>Building and Installing Polly</h1> |
| |
| <h2> Automatic </h2> |
| |
| There is a <a href="polly.sh">script</a> available to automatically checkout, |
| update, build, and test Polly. This script contains all the commands that are |
| subsequently described on this webpage. The automatic installation consists |
| of four simple steps: |
| |
| <pre> |
| mkdir polly && cd polly |
| wget https://polly.llvm.org/polly.sh |
| chmod +x polly.sh |
| ./polly.sh |
| </pre> |
| |
| <h2> Manual </h2> |
| <h3 id="source"> Get the code </h3> |
| |
| <pre> |
| git clone https://github.com/llvm/llvm-project.git llvm_git |
| </pre> |
| <h3 id="build">Build Polly</h3> |
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| <pre> |
| mkdir llvm_build && cd llvm_build |
| cmake -DLLVM_ENABLE_PROJECTS='polly;clang' ../llvm_git/llvm && make |
| </pre> |
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| <h3> Test Polly</h3> |
| |
| <pre>make check-polly</pre> |
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| <h3>Building Polly Without LLVM</h3> |
| It is also possible to build Polly without |
| also building LLVM. All you need is an installed version of LLVM or a previous |
| build. To configure Polly to use a pre-built LLVM, set the |
| <code>-DCMAKE_PREFIX_PATH</code> option: |
| |
| <pre>cmake -DCMAKE_PREFIX_PATH=${LLVM_PREFIX}/lib/cmake/llvm ../llvm_git/polly</pre> |
| |
| To run unittests, however, you need to have the LLVM source directory around. |
| Polly will use the <code>llvm-config</code> of the LLVM you're building against |
| to guess the location of the source directory. You may override autodetected |
| location by setting the <code>-DLLVM_SOURCE_ROOT</code> option. |
| |
| <h3> Troubleshooting</h3> |
| |
| <p>If you get an error in one of the python files, your system probably uses python3 |
| as default python interpreter. This is the case, for instance, under Arch Linux. |
| To solve this issue, run <code>cmake</code> again, but with the added argument: |
| <code>-DPYTHON_EXECUTABLE=/usr/bin/python2</code> (replace <code>/usr/bin/python2</code> |
| with the location of the python2 interpreter under your system). |
| |
| <pre>cmake -DCMAKE_PREFIX_PATH=${ISL_INSTALL} -DPYTHON_EXECUTABLE=/usr/bin/python2 ${LLVM_SRC}</pre> |
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