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Using file(COPY FILE...) has several downsides. Since the file command is only executed at configuration time, any changes to headers made after the initial CMake execution are ignored. This can lead to subtle errors since the just built Clang will be using stale libc++ headers. Furthermore, since the headers are copied prior to executing the build system, this may hide missing dependencies on libc++ from other LLVM components. This changes replaces the use of file(COPY FILE...) command with a custom command and target which addresses all aforementioned issues and matches the implementation already used by other LLVM components that also install headers like Clang builtin headers. Differential Revision: https://reviews.llvm.org/D44773 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@329544 91177308-0d34-0410-b5e6-96231b3b80d8
libc++ Documentation ==================== The libc++ documentation is written using the Sphinx documentation generator. It is currently tested with Sphinx 1.1.3. To build the documents into html configure libc++ with the following cmake options: * -DLLVM_ENABLE_SPHINX=ON * -DLIBCXX_INCLUDE_DOCS=ON After configuring libc++ with these options the make rule `docs-libcxx-html` should be available.