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Diffstat (limited to 'lib/libcxx/docs/DesignDocs/ABIVersioning.rst')
| -rw-r--r-- | lib/libcxx/docs/DesignDocs/ABIVersioning.rst | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/lib/libcxx/docs/DesignDocs/ABIVersioning.rst b/lib/libcxx/docs/DesignDocs/ABIVersioning.rst deleted file mode 100644 index 5960dd18610..00000000000 --- a/lib/libcxx/docs/DesignDocs/ABIVersioning.rst +++ /dev/null @@ -1,17 +0,0 @@ - -==================== -Libc++ ABI stability -==================== - -Libc++ aims to preserve stable ABI to avoid subtle bugs when code built to the old ABI -is linked with the code build to the new ABI. At the same time, libc++ allows ABI-breaking -improvements and bugfixes for the scenarios when ABI change is not a issue. - -To support both cases, libc++ allows specifying the ABI version at the -build time. The version is defined with a cmake option -LIBCXX_ABI_VERSION. Another option LIBCXX_ABI_UNSTABLE can be used to -include all present ABI breaking features. These options translate -into C++ macro definitions _LIBCPP_ABI_VERSION, _LIBCPP_ABI_UNSTABLE. - -Any ABI-changing feature is placed under it's own macro, _LIBCPP_ABI_XXX, which is enabled -based on the value of _LIBCPP_ABI_VERSION. _LIBCPP_ABI_UNSTABLE, if set, enables all features at once. |