Minor error message clarification

common.sh

@@ -51,7 +51,7 @@ compile_uboot()
 	if [[ -z $toolchain && -n $UBOOT_NEEDS_GCC ]] && ! check_toolchain "$UBOOT_COMPILER" "$UBOOT_NEEDS_GCC"; then
 		# try to find required toolchain if alt was not found
 		toolchain=$(find_toolchain "$UBOOT_COMPILER" "$UBOOT_NEEDS_GCC")
-		[[ -z $toolchain ]] && exit_with_error "Could not find required toolchain" "${compiler}gcc $expression"
+		[[ -z $toolchain ]] && exit_with_error "Could not find required toolchain" "${UBOOT_COMPILER}gcc $UBOOT_NEEDS_GCC"
 	fi
 
 	display_alert "Compiler version" "${UBOOT_COMPILER}gcc $(eval ${toolchain:+env PATH=$toolchain:$PATH} ${UBOOT_COMPILER}gcc -dumpversion)" "info"
@@ -203,7 +203,7 @@ compile_kernel()
 	if [[ -z $toolchain && -n $KERNEL_NEEDS_GCC ]] && ! check_toolchain "$KERNEL_COMPILER" "$KERNEL_NEEDS_GCC"; then
 		# try to find required toolchain if alt was not found
 		toolchain=$(find_toolchain "$KERNEL_COMPILER" "$KERNEL_NEEDS_GCC")
-		[[ -z $toolchain ]] && exit_with_error "Could not find required toolchain" "${KERNEL_COMPILER}gcc $expression"
+		[[ -z $toolchain ]] && exit_with_error "Could not find required toolchain" "${KERNEL_COMPILER}gcc $KERNEL_NEEDS_GCC"
 	fi
 
 	display_alert "Compiler version" "${KERNEL_COMPILER}gcc $(eval ${toolchain:+env PATH=$toolchain:$PATH} ${KERNEL_COMPILER}gcc -dumpversion)" "info"