script: ease setup of env vars needed to cross-compile for ARM64

Signed-off-by: Jesper Dangaard Brouer <[email protected]>

Author: netoptimizer

Diff for: scripts/arm64_compile_env.source

@@ -0,0 +1,9 @@
+# 'source' this script in your shell
+
+export VERSION=gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu
+export CROSS_COMPILE_DIR=/home/${USER}/cross-compilers/${VERSION}
+export CROSS_COMPILE="aarch64-linux-gnu-"
+export ARCH=arm64
+
+export PATH=${CROSS_COMPILE_DIR}/bin:${PATH}
+echo "Cross-compiler in PATH: $PATH"