[CMake] Introduce 'swift-syntax-lib' install component

So that swift-syntax host libraries can be installed independently.

Author: rintaro

cmake/modules/SwiftComponents.cmake

@@ -65,11 +65,12 @@
 # * toolchain-tools -- a subset of tools that we will install to the OSS toolchain.
 # * testsuite-tools -- extra tools required to run the Swift testsuite.
 # * static-mirror-lib -- Build the static mirror library used by SwiftStaticMirror.
+# * swift-syntax-lib -- install swift-syntax libraries
 # * toolchain-dev-tools -- install development tools useful in a shared toolchain
 # * llvm-toolchain-dev-tools -- install LLVM development tools useful in a shared toolchain
 # * dev -- headers and libraries required to use Swift compiler as a library.
 set(_SWIFT_DEFINED_COMPONENTS
-  "autolink-driver;back-deployment;compiler;clang-builtin-headers;clang-resource-dir-symlink;clang-builtin-headers-in-clang-resource-dir;libexec;stdlib;stdlib-experimental;sdk-overlay;static-mirror-lib;editor-integration;tools;testsuite-tools;toolchain-tools;toolchain-dev-tools;llvm-toolchain-dev-tools;dev;license;sourcekit-xpc-service;sourcekit-inproc;swift-remote-mirror;swift-remote-mirror-headers")
+  "autolink-driver;back-deployment;compiler;clang-builtin-headers;clang-resource-dir-symlink;clang-builtin-headers-in-clang-resource-dir;libexec;stdlib;stdlib-experimental;sdk-overlay;static-mirror-lib;swift-syntax-lib;editor-integration;tools;testsuite-tools;toolchain-tools;toolchain-dev-tools;llvm-toolchain-dev-tools;dev;license;sourcekit-xpc-service;sourcekit-inproc;swift-remote-mirror;swift-remote-mirror-headers")
 
 # The default install components include all of the defined components, except
 # for the following exceptions.
@@ -96,6 +97,12 @@ macro(swift_configure_components)
   set(SWIFT_INSTALL_COMPONENTS "${_SWIFT_DEFAULT_COMPONENTS}" CACHE STRING
     "A semicolon-separated list of components to install from the set ${_SWIFT_DEFINED_COMPONENTS}")
 
+  # 'compiler' depends on 'swift-syntax-lib' component.
+  if ("compiler" IN_LIST SWIFT_INSTALL_COMPONENTS AND
+      NOT "swift-syntax-lib" IN_LIST SWIFT_INSTALL_COMPONENTS)
+    list(APPEND SWIFT_INSTALL_COMPONENTS "swift-syntax-lib")
+  endif()
+
   foreach(component ${_SWIFT_DEFINED_COMPONENTS})
     add_custom_target(${component})
     add_llvm_install_targets(install-${component}

lib/CMakeLists.txt

@@ -27,14 +27,17 @@ if (SWIFT_BUILD_SWIFT_SYNTAX)
     SwiftCompilerPluginMessageHandling
   )
 
+  # Install shared runtime libraries
   if(CMAKE_SYSTEM_NAME MATCHES Windows)
     swift_install_in_component(TARGETS ${SWIFT_SYNTAX_MODULES}
+                               RUNTIME
                                DESTINATION "bin"
-                               COMPONENT compiler)
+                               COMPONENT swift-syntax-lib)
   else()
     swift_install_in_component(TARGETS ${SWIFT_SYNTAX_MODULES}
+                               LIBRARY
                                DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift/host"
-                               COMPONENT compiler)
+                               COMPONENT swift-syntax-lib)
   endif()
 
   # Install import libraries in Windows.
@@ -50,15 +53,16 @@ if (SWIFT_BUILD_SWIFT_SYNTAX)
          OUTPUT_VARIABLE SWIFT_SYNTAX_IMPORT_LIBRARIES)
     swift_install_in_component(PROGRAMS "${SWIFT_SYNTAX_IMPORT_LIBRARIES}"
                                DESTINATION lib
-                               COMPONENT compiler)
+                               COMPONENT swift-syntax-lib)
   endif()
 
+  # Install Swift module interface files.
   foreach(module ${SWIFT_SYNTAX_MODULES})
     set(module_dir "${module}.swiftmodule")
     set(module_file "${SWIFT_HOST_LIBRARIES_DEST_DIR}/${module_dir}/${SWIFT_HOST_MODULE_TRIPLE}.swiftinterface")
     swift_install_in_component(FILES "${module_file}"
                                DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift/host/${module_dir}"
-                               COMPONENT compiler)
+                               COMPONENT swift-syntax-lib)
   endforeach()
 endif()