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74 lines
3.4 KiB
Markdown
74 lines
3.4 KiB
Markdown
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# sanitizers-cmake
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[](https://github.com/arsenm/sanitizers-cmake/issues)
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[](LICENSE)
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CMake module to enable sanitizers for binary targets.
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## Include into your project
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To use [FindSanitizers.cmake](cmake/FindSanitizers.cmake), simply add this repository as git submodule into your own repository
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```Shell
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mkdir externals
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git submodule add git://github.com/arsenm/sanitizers-cmake.git externals/sanitizers-cmake
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```
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and adding ```externals/sanitizers-cmake/cmake``` to your ```CMAKE_MODULE_PATH```
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```CMake
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set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/externals/sanitizers-cmake/cmake" ${CMAKE_MODULE_PATH})
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```
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If you don't use git or dislike submodules you can copy the files in [cmake directory](cmake) into your repository. *Be careful and keep updates in mind!*
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Now you can simply run ```find_package``` in your CMake files:
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```CMake
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find_package(Sanitizers)
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```
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## Usage
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You can enable the sanitizers with ``SANITIZE_ADDRESS``, ``SANITIZE_MEMORY``, ``SANITIZE_THREAD`` or ``SANITIZE_UNDEFINED`` options in your CMake configuration. You can do this by passing e.g. ``-DSANITIZE_ADDRESS=On`` on your command line or with your graphical interface.
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If sanitizers are supported by your compiler, the specified targets will be build with sanitizer support. If your compiler has no sanitizing capabilities (I asume intel compiler doesn't) you'll get a warning but CMake will continue processing and sanitizing will simply just be ignored.
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#### Compiler issues
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Different compilers may be using different implementations for sanitizers. If you'll try to sanitize targets with C and Fortran code but don't use gcc & gfortran but clang & gfortran, this will cause linking problems. To avoid this, such problems will be detected and sanitizing will be disabled for these targets.
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Even C only targets may cause problems in certain situations. Some problems have been seen with AddressSanitizer for preloading or dynamic linking. In such cases you may try the ``SANITIZE_LINK_STATIC`` to link sanitizers for gcc static.
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## Build targets with sanitizer support
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To enable sanitizer support you simply have to add ``add_sanitizers(<TARGET>)`` after defining your target. To provide a sanitizer blacklist file you can use the ``sanitizer_add_blacklist_file(<FILE>)`` function:
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```CMake
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find_package(Sanitizers)
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sanitizer_add_blacklist_file("blacklist.txt")
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add_executable(some_exe foo.c bar.c)
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add_sanitizers(some_exe)
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add_library(some_lib foo.c bar.c)
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add_sanitizers(some_lib)
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```
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## Run your application
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The sanitizers check your program, while it's running. In some situations (e.g. LD_PRELOAD your target) it might be required to preload the used AddressSanitizer library first. In this case you may use the ``asan-wrapper`` script defined in ``ASan_WRAPPER`` variable to execute your application with ``${ASan_WRAPPER} myexe arg1 ...``.
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## Contribute
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Anyone is welcome to contribute. Simply fork this repository, make your changes **in an own branch** and create a pull-request for your change. Please do only one change per pull-request.
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You found a bug? Please fill out an [issue](https://github.com/arsenm/sanitizers-cmake/issues) and include any data to reproduce the bug.
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#### Contributors
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* [Matt Arsenault](https://github.com/arsenm)
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* [Alexander Haase](https://github.com/alehaa)
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