The KREL macro defined in the Makefile isn't used, although the "make -s
kernelrelease" command that is run as part of its definition causes a
non-fatal build error when the kernel is built outside its source
directory, for example, in distros such as Debian and Ubuntu:
/usr/src/linux-headers-4.9.0-3-common/scripts/Makefile.build:44: /usr/src/linux-headers-4.9.0-3-common/scripts/basic/Makefile: No such file or directory
make[4]: No rule to make target '/usr/src/linux-headers-4.9.0-3-common/scripts/basic/Makefile'. Stop.
make[3]: [scripts_basic] Error 2
The Makefile carries on to build the module after this error. Just
remove the KREL macro to avoid it in the first place.
dorimanx
commented
7 years ago
The KREL macro defined in the Makefile isn't used, although the "make -s kernelrelease" command that is run as part of its definition causes a non-fatal build error when the kernel is built outside its source directory, for example, in distros such as Debian and Ubuntu:
/usr/src/linux-headers-4.9.0-3-common/scripts/Makefile.build:44: /usr/src/linux-headers-4.9.0-3-common/scripts/basic/Makefile: No such file or directory make[4]: No rule to make target '/usr/src/linux-headers-4.9.0-3-common/scripts/basic/Makefile'. Stop. make[3]: [scripts_basic] Error 2
The Makefile carries on to build the module after this error. Just remove the KREL macro to avoid it in the first place.