build: selectively apply some static linking

Convert a few libraries to static linking. This results in a net size
reduction for the toolchain as a whole while also reducing the
distributed DLLs.

PackageModelSyntax Conversion:
~~~
Before:
 6621696 sourcekit-lsp.exe
 3844608 Commands.dll
  144384 PackageModelSyntax.dll
 -------
10610688

After:
 6712320 sourcekit-lsp.exe
 3950592 Commands.dll
--------
10662912
~~~

Savings: 52,224 bytes

SwiftSDKCommand Conversion:
~~~
Before:
 23552 swift-sdk.exe
267776 SwiftSDKCommand.dll
------
291328

After:
265728 swift-sdk.exe
~~~

Savings: 25,600 bytes

CoreCommands Conversion:
~~~
Before:
3844608 Commands.dll
1065472 CoreCommands.dll
 265728 swift-sdk.exe
-------
5175808

After:
4202496 Commands.dll
 649728 swift-sdk.exe
-------
4852224
~~~

Savings: 323,584 bytes

DriverSupport Conversion:
~~~
Before:
 945152 Build.dll
4202496 Commands.dll
  49152 DriverSupport.dll
 649728 swift-sdk.exe
-------
5846528

After:
 958976 Build.dll
4217856 Commands.dll
 669184 swift-sdk.exe
-------
5846016
~~~

Savings: 512 bytes

Net Savings: 401,920 bytes

Author: compnerd

Sources/CoreCommands/CMakeLists.txt

@@ -6,7 +6,7 @@
 # See http://swift.org/LICENSE.txt for license information
 # See http://swift.org/CONTRIBUTORS.txt for Swift project authors
 
-add_library(CoreCommands
+add_library(CoreCommands STATIC
   BuildSystemSupport.swift
   SwiftCommandState.swift
   SwiftCommandObservabilityHandler.swift
@@ -28,8 +28,3 @@ target_link_libraries(CoreCommands PRIVATE
 # NOTE(compnerd) workaround for CMake not setting up include flags yet
 set_target_properties(CoreCommands PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
-
-install(TARGETS CoreCommands
-  ARCHIVE DESTINATION lib
-  LIBRARY DESTINATION lib
-  RUNTIME DESTINATION bin)

Sources/DriverSupport/CMakeLists.txt

@@ -6,7 +6,7 @@
 # See http://swift.org/LICENSE.txt for license information
 # See http://swift.org/CONTRIBUTORS.txt for Swift project authors
 
-add_library(DriverSupport
+add_library(DriverSupport STATIC
   DriverSupportUtils.swift
   SPMSwiftDriverExecutor.swift)
 # NOTE(compnerd) workaround for CMake not setting up include flags yet
@@ -16,9 +16,3 @@ target_link_libraries(DriverSupport PUBLIC
   Basics
   PackageModel
   SwiftDriver)
-
-install(TARGETS DriverSupport
-  ARCHIVE DESTINATION lib
-  LIBRARY DESTINATION lib
-  RUNTIME DESTINATION bin)
-set_property(GLOBAL APPEND PROPERTY SwiftPM_EXPORTS DriverSupport)

Sources/SwiftSDKCommand/CMakeLists.txt

@@ -6,7 +6,7 @@
 # See http://swift.org/LICENSE.txt for license information
 # See http://swift.org/CONTRIBUTORS.txt for Swift project authors
 
-add_library(SwiftSDKCommand
+add_library(SwiftSDKCommand STATIC
   Configuration/ConfigurationSubcommand.swift
   Configuration/DeprecatedSwiftSDKConfigurationCommand.swift
   Configuration/ResetConfiguration.swift
@@ -27,8 +27,3 @@ target_link_libraries(SwiftSDKCommand PUBLIC
 # NOTE(compnerd) workaround for CMake not setting up include flags yet
 set_target_properties(SwiftSDKCommand PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
-
-install(TARGETS SwiftSDKCommand
-  ARCHIVE DESTINATION lib
-  LIBRARY DESTINATION lib
-  RUNTIME DESTINATION bin)