Makefile：Shell命令问题

Question

I am trying to run a make file that is related to a open source project in the github but i getting error during on run it

It is first line of this make file and it cause an error

NDK_PATH=$(shell dirname `which ndk-build`)

and the error is :

-bash: shell: command not found

what is the mean of shell ? shell command not found in Linux !!

Answer 1

The shell function does command expansion in the make file. You can refer the shell function manual in makefile for more information.

For your case NDK_PATH=$(shell dirname 'which ndk-build') in the makefile, the NDK_PATH should store the directory name where ndk-build command locates.

You are not allowed to execute NDK_PATH=$(shell dirname 'which ndk-build') in your terminal, which will result in the error you post.

Answer 2

I have the same problem, and solved it like as followings,

you can try this instead

NDK_BIN := $(shell which ndk-build)
NDK_PATH := $(shell dirname $(NDK_BIN))