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Altera_Forum's avatar
Altera_Forum
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20 years ago

Makefile for simple linux device driver

Hello everyone, i'm trying to write a device driver. It is an external driver. It should be load with insmod in an running system. My problem is, that i cannot build the module (I sta...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

oh geez... I'm so sorry... I didn't even see the -O in the example Makefile I gave. That was a mistake on my part. Sorry for that.

The line should read:

$(MAKE) -C $(KERNELDIR) M=`pwd` O=$(BUILDDIR) modules

aie. That should be what you need.

The MODPOST error is due to "dos linefeeds" in the Modules.symvers file (in your kernel build directory). So you'll need to run the file through dos2unix.