On Wed, Oct 31, 2012 at 10:11:13PM +0800, Austin Zhang wrote:
> Hi, 
> 
> I am trying to compile powertop on my box: ubuntu 12.04, X86-64.
> 
> (1)compiling issue
> 
> Here, my system didn’t install libnl-1, but I installed libnl2 (under /usr/lib)
> and libnl-3 (under /lib).
> 
> Then when ‘./configure’, I got:
> 
> checking for LIBNL... no
> 
> configure: error: Package requirements (libnl-1) were not met:
> 
>  No package 'libnl-1' found
> 
> so seemed the below logic in configure.ac doesn’t work
> 
> ……
> 
> has_libnl_ver=0
> 
> PKG_CHECK_MODULES([LIBNL], [libnl-3.0 libnl-genl-3.0], [
> 
>         has_libnl_ver=3], [
> 
>         AC_SEARCH_LIBS([nl_socket_alloc], [nl-3 nl-genl-3], [
> 
>                 has_libnl_ver=3], [
> 
>                 AC_SEARCH_LIBS([nl_socket_alloc], [nl], [
> 
>                         has_libnl_ver=2], [
> 
>                         PKG_CHECK_MODULES([LIBNL], [libnl-1], [has_libnl_ver=
> 1], [])])])])
> 
> ……

Based on the file lists you sent in a followup post, it appears that
Ubuntu uses a different naming convention for these libraries, so
AC_SEARCH_LIBS will not find the function it needs in either libnl-3 or
libnl-genl-3, since they don't exist.

Is there a -devel package you can install that provides a pkgconfig
file for libnl-3?

-Patrick