This option enables you to manually set, or override, the GCC version when configuring for ARM Linux.
If you use this option to override the reported version when configuring against a GCC installation, the compiler gives a warning if the override version you specify is older than the version of the GCC installation.
--arm_linux in the Linker Reference
--library=name in the Linker Reference
--search_dynamic_libraries, --no_search_dynamic_libraries in the Linker Reference
About building Linux applications with the ARM Compiler toolchain and GNU libraries in Building Linux Applications with the ARM Compiler toolchain and GNU Libraries.