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The problem with plugins on Windows is that when building a plugin DLL it needs to explicitly link against something (an exe or DLL) if it uses symbols from that thing, and that thing must explicitly export those symbols. Also there's a limit of 65535 symbols that can be exported. This means that currently plugins only work on Windows when using BUILD_SHARED_LIBS, and that doesn't work with MSVC. This patch adds an LLVM_EXPORT_SYMBOLS_FOR_PLUGINS option, which when enabled automatically exports from all LLVM tools the symbols that a plugin could want to use so that a plugin can link against a tool directly. Plugins can specify what tool they link against by using PLUGIN_TOOL argument to llvm_add_library. The option can also be enabled on Linux, though there all it should do is restrict the set of symbols that are exported as by default all symbols are exported. This option is currently OFF by default, as while I've verified that it works with MSVC, linux gcc, and cygwin gcc, I haven't tried mingw gcc and I have no idea what will happen on OSX. Also unfortunately we can't turn on LLVM_ENABLE_PLUGINS when the option is ON as bugpoint-passes needs to be loaded by both bugpoint.exe and opt.exe which is incompatible with this approach. Also currently clang plugins don't work with this approach, which will be fixed in future patches. Differential Revision: http://reviews.llvm.org/D18826 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270839 91177308-0d34-0410-b5e6-96231b3b80d8 |
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| include | ||
| lib | ||
| projects | ||
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| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .arcconfig | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| configure | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| llvm.spec.in | ||
| LLVMBuild.txt | ||
| README.txt | ||
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.