Fix TI CMake response file syntax
Corrects the syntax for specifying a response file to the TI
toolchain.
This resolves an issue when CMake attempted to build aws_tests.out on
Windows where, due to command line length limits, a response file was
being created and referenced incorrectly.
@@ -40,5 +40,5 @@ link_libraries(-llibc.a)
# Overwrite CMake archiver command for TI's compiler.
set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> a <TARGET> <LINK_FLAGS> <OBJECTS>")
-# Overwrite response file flag for TI's compiler.
-set(CMAKE_C_RESPONSE_FILE_LINK_FLAG "-cmd_file=")
+# Default response file flag is "@". TI's compiler doesn't require that.
+set(CMAKE_C_RESPONSE_FILE_LINK_FLAG "")
