DKMS make.log for bcmwl-5.100.82.38+bdcom for kernel 3.5.0-25-generic (i686)
make: Entering directory `/usr/src/linux-headers-3.5.0-25-generic'
  LD      /var/lib/dkms/bcmwl/5.100.82.38+bdcom/build/built-in.o
  CC [M]  /var/lib/dkms/bcmwl/5.100.82.38+bdcom/build/src/shared/linux_osl.o
  CC [M]  /var/lib/dkms/bcmwl/5.100.82.38+bdcom/build/src/wl/sys/wl_linux.o
/var/lib/dkms/bcmwl/5.100.82.38+bdcom/build/src/wl/sys/wl_linux.c:43:24: fatal error: asm/system.h: No such file or directory
compilation terminated.
make[1]: *** [/var/lib/dkms/bcmwl/5.100.82.38+bdcom/build/src/wl/sys/wl_linux.o] Error 1
make: *** [_module_/var/lib/dkms/bcmwl/5.100.82.38+bdcom/build] Error 2
make: Leaving directory `/usr/src/linux-headers-3.5.0-25-generic'