[CMake] Add support for installing FileCheck, if requested.

Author: ddunbar

CMakeLists.txt

@@ -86,7 +86,7 @@ set(SWIFT_ENABLE_GOLD_LINKER FALSE CACHE BOOL
     "Enable using the gold linker when available")
 
 set(_SWIFT_KNOWN_INSTALL_COMPONENTS
-    "autolink-driver;compiler;clang-builtin-headers;clang-resource-dir-symlink;clang-builtin-headers-in-clang-resource-dir;stdlib;stdlib-experimental;sdk-overlay;editor-integration;tools;testsuite-tools;dev;license;sourcekit-xpc-service;sourcekit-inproc;swift-remote-mirror-headers")
+    "autolink-driver;compiler;clang-builtin-headers;clang-resource-dir-symlink;clang-builtin-headers-in-clang-resource-dir;stdlib;stdlib-experimental;sdk-overlay;editor-integration;tools;testsuite-tools;toolchain-dev-tools;dev;license;sourcekit-xpc-service;sourcekit-inproc;swift-remote-mirror-headers")
 
 # Set the SWIFT_INSTALL_COMPONENTS variable to the default value if it is not passed in via -D
 set(SWIFT_INSTALL_COMPONENTS "${_SWIFT_KNOWN_INSTALL_COMPONENTS}" CACHE STRING
@@ -112,6 +112,7 @@ set(SWIFT_INSTALL_COMPONENTS "${_SWIFT_KNOWN_INSTALL_COMPONENTS}" CACHE STRING
 # * tools -- tools (other than the compiler) useful for developers writing
 #   Swift code.
 # * testsuite-tools -- extra tools required to run the Swift testsuite.
+# * toolchain-dev-tools -- install development tools useful in a shared toolchain
 # * dev -- headers and libraries required to use Swift compiler as a library.
 
 set(SWIFT_SDKS "" CACHE STRING

utils/CMakeLists.txt

@@ -8,3 +8,7 @@ swift_install_in_component(tools
     FILES swift-api-dump.py
     DESTINATION bin)
 
+# We install LLVM's FileCheck, if requested.
+swift_install_in_component(toolchain-dev-tools
+    FILES "${SWIFT_PATH_TO_LLVM_BUILD}/bin/FileCheck"
+    DESTINATION bin)