[NFC] Write lnk file dynamically from cmake.

Instead of copying a static file from the repository, do what the
cmakefile already does for static-stdlib-args.lnk and generate it
dynamically. This means we can utilize the libicu flags set from the
prior commit rather than requiring libicu be built as part of the Swift
build just to ensure that the static link flags are correct.

Author: 3405691582

stdlib/public/runtime/CMakeLists.txt

@@ -143,15 +143,23 @@ if(SWIFT_BUILD_STATIC_STDLIB AND "${sdk}" STREQUAL "LINUX")
 
   # Generate the static-executable-args.lnk file used for ELF systems (eg linux)
   set(linkfile "${lowercase_sdk}/static-executable-args.lnk")
-  add_custom_command_target(swift_static_binary_${sdk}_args
-    COMMAND
-      "${CMAKE_COMMAND}" -E copy
-      "${SWIFT_SOURCE_DIR}/utils/static-executable-args.lnk"
-      "${SWIFTSTATICLIB_DIR}/${linkfile}"
-    OUTPUT
-      "${SWIFTSTATICLIB_DIR}/${linkfile}"
-    DEPENDS
-      "${SWIFT_SOURCE_DIR}/utils/static-executable-args.lnk")
+  file(WRITE "${SWIFTSTATICLIB_DIR}/${linkfile}" "
+-static
+-lswiftCore
+-lswiftImageInspectionShared
+-Xlinker
+--defsym=__import_pthread_self=pthread_self
+-Xlinker
+--defsym=__import_pthread_once=pthread_once
+-Xlinker
+--defsym=__import_pthread_key_create=pthread_key_create
+-lpthread
+${libicu_i18n_a}
+${libicu_uc_a}
+${libicu_data_a}
+-ldl
+-lstdc++
+-lm")
 
   list(APPEND static_binary_lnk_file_list ${swift_static_binary_${sdk}_args})
   swift_install_in_component(FILES "${SWIFTSTATICLIB_DIR}/${linkfile}"