[build] specify deployment targets for compatibility libraries (#31473)

This is needed in situations where the minimum deployment target is
specified in build-script -- these libraries do not to obey to that
since we need to ensure we are able to back deploy those correctly.

Addresses rdar://59249988

Author: edymtt

stdlib/toolchain/CMakeLists.txt

@@ -61,6 +61,11 @@ endif()
 # runtime being patched only through public ABI.
 list(APPEND CXX_COMPILE_FLAGS "-DSWIFT_COMPATIBILITY_LIBRARY=1")
 
+set(COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_OSX "10.9")
+set(COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_IOS "7.0")
+set(COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_TVOS "9.0")
+set(COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_WATCHOS "2.0")
+
 add_subdirectory(legacy_layouts)
 add_subdirectory(Compatibility50)
 add_subdirectory(Compatibility51)

stdlib/toolchain/Compatibility50/CMakeLists.txt

@@ -9,6 +9,10 @@ add_swift_target_library("${library_name}" STATIC
   C_COMPILE_FLAGS ${CXX_COMPILE_FLAGS}
   LINK_FLAGS ${CXX_LINK_FLAGS}
   SWIFT_COMPILE_FLAGS ${SWIFT_STANDARD_LIBRARY_SWIFT_FLAGS}
+  DEPLOYMENT_VERSION_OSX ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_OSX}
+  DEPLOYMENT_VERSION_IOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_IOS}
+  DEPLOYMENT_VERSION_TVOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_TVOS}
+  DEPLOYMENT_VERSION_WATCHOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_WATCHOS}
 
   INSTALL_IN_COMPONENT compiler
   INSTALL_WITH_SHARED)

stdlib/toolchain/Compatibility51/CMakeLists.txt

@@ -10,6 +10,10 @@ add_swift_target_library("${library_name}" STATIC
   C_COMPILE_FLAGS ${CXX_COMPILE_FLAGS}
   LINK_FLAGS ${CXX_LINK_FLAGS}
   SWIFT_COMPILE_FLAGS ${SWIFT_STANDARD_LIBRARY_SWIFT_FLAGS}
+  DEPLOYMENT_VERSION_OSX ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_OSX}
+  DEPLOYMENT_VERSION_IOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_IOS}
+  DEPLOYMENT_VERSION_TVOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_TVOS}
+  DEPLOYMENT_VERSION_WATCHOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_WATCHOS}
 
   INSTALL_IN_COMPONENT compiler
   INSTALL_WITH_SHARED)

stdlib/toolchain/CompatibilityDynamicReplacements/CMakeLists.txt

@@ -8,6 +8,10 @@ add_swift_target_library("${library_name}" STATIC
   C_COMPILE_FLAGS ${CXX_COMPILE_FLAGS}
   LINK_FLAGS ${CXX_LINK_FLAGS}
   SWIFT_COMPILE_FLAGS ${SWIFT_STANDARD_LIBRARY_SWIFT_FLAGS}
+  DEPLOYMENT_VERSION_OSX ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_OSX}
+  DEPLOYMENT_VERSION_IOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_IOS}
+  DEPLOYMENT_VERSION_TVOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_TVOS}
+  DEPLOYMENT_VERSION_WATCHOS ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_WATCHOS}
 
   INSTALL_IN_COMPONENT compiler
   INSTALL_WITH_SHARED)