arm-elf-gcc

While installing osmocom-bb, i came across the "building the source" section. It says in later part that: " If your GCC binary that produces ARM code is not called *arm-elf-gcc* you will need to invoke the following statement and provide the basename of the toolchain with the ending *-*" cd src make -e CROSS_TOOL_PREFIX=arm-OTHER_NAME- How can i find out that my GCC binary is called as *arm-elf-gcc *or something else?