Merge pull request #24028 from colemancda/posixErrorGlibc

[stdlib] Include POSIXError as part of Glibc

Author: compnerd

stdlib/public/Platform/CMakeLists.txt

@@ -25,6 +25,7 @@ add_swift_target_library(swiftDarwin ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES} IS_SDK_
 
 add_swift_target_library(swiftGlibc ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES} IS_SDK_OVERLAY
     ${swift_platform_sources}
+    POSIXError.swift
 
     GYB_SOURCES
       ${swift_platform_gyb_sources}