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I'm trying to cross compile a helloworld kernel (2.6.x) module for ARM architecture on my intel x86 host.
The codesourcery tool chain for ARM is located at: /home/ravi/workspace/hawk/arm-2009q3
The kernel source is located at :/home/ravi/workspace/hawk/linux-omapl1
My Makefile:
ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi obj-m := Hello.o KDIR := /home/ravi/workspace/hawk/linux-omapl1 PWD := $(shell pwd) default: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules clean: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) clean When i run make, the .ko produced is that of my host machine which means the makefile is invoking the native compiler instead of the cross compiler.What am I doing wrong? The cross compiler's binaries are in my path.
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A cross compiler is a compiler capable of creating executable code for a platform other than the one on which the compiler is running. For example, a compiler that runs on a PC but generates code that runs on an Android smartphone is a cross compiler.
To "cross compile" is to compile source on say a Linux box with intent on running it on a MAC or Windows box. This is usually done using a cross compilation plugin, which are readily available from various web servers across the net.
Yes, compiling a kernel usually means: Downloading the source code. Possibly modifying the source code (most non-programmers don't usually do this). Configuring the kernel (what features/modules/drivers to include, etc.) Compiling it.
Putting ARCH and CROSS_COMPILE in the Makefile doesn't work. You need to put them on the command line:
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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