On Fri, 26 Apr 2013 11:11:09 -0700, Henrique Rodrigues said:
I have the one .c source file that I want to create multiple kernel modules out of it by setting macros using the makefile.
Generally considered ugly by the mainstream kernel.
The idea is that if -DMODULE1 is set, I'll build module1.ko and if -DMODULE2 is set, I'll build module 2.
The way this would usually be done is splitting your module into 3 parts - one common, one for device 1 and one for device 2. Then something like this (cut-n-paste from drivers/net/wireless/hostap/Makefile: hostap-y := hostap_80211_rx.o hostap_80211_tx.o hostap_ap.o hostap_info.o \ hostap_ioctl.o hostap_main.o hostap_proc.o obj-$(CONFIG_HOSTAP) += hostap.o obj-$(CONFIG_HOSTAP_CS) += hostap_cs.o obj-$(CONFIG_HOSTAP_PLX) += hostap_plx.o obj-$(CONFIG_HOSTAP_PCI) += hostap_pci.o Which will build 3 different modules (_cs, _plx, _pci) using the common C files and 1 device-specific C file for each one.