Merge pull request #79108 from owenv/owenv/add-libclang-to-toolchain

Add libclang to install_components_with_clang presets

Swift Build uses libclang to read serialized diagnostic files, and invoke the module dependency scanner. Add it to the toolchain build.

Author: owenv

utils/build-presets.ini

@@ -19,7 +19,7 @@ swift-install-components=back-deployment;compiler;clang-builtin-headers;libexec;
 [preset: mixin_buildbot_install_components_with_clang]
 
 swift-install-components=autolink-driver;back-deployment;compiler;clang-resource-dir-symlink;libexec;stdlib;sdk-overlay;static-mirror-lib;toolchain-tools;license;sourcekit-xpc-service;sourcekit-inproc;swift-remote-mirror;swift-remote-mirror-headers
-llvm-install-components=llvm-ar;llvm-ranlib;llvm-cov;llvm-profdata;IndexStore;clang;clang-resource-headers;compiler-rt;clangd;dsymutil;LTO;clang-features-file;lld
+llvm-install-components=llvm-ar;llvm-ranlib;llvm-cov;llvm-profdata;IndexStore;clang;clang-resource-headers;compiler-rt;clangd;libclang;dsymutil;LTO;clang-features-file;lld
 
 [preset: mixin_buildbot_trunk_base]
 # Build standard library and SDK overlay for iOS device and simulator.
@@ -836,7 +836,7 @@ no-swift-stdlib-assertions
 [preset: mixin_linux_install_components_with_clang]
 
 swift-install-components=autolink-driver;compiler;clang-resource-dir-symlink;libexec;stdlib;swift-remote-mirror;sdk-overlay;static-mirror-lib;toolchain-tools;license;sourcekit-inproc
-llvm-install-components=llvm-ar;llvm-ranlib;llvm-cov;llvm-profdata;IndexStore;clang;clang-resource-headers;compiler-rt;clangd;lld;LTO;clang-features-file
+llvm-install-components=llvm-ar;llvm-ranlib;llvm-cov;llvm-profdata;IndexStore;clang;clang-resource-headers;compiler-rt;clangd;libclang;lld;LTO;clang-features-file
 
 [preset: mixin_linux_installation]
 mixin-preset=