hostapd on Slackware Linux 12.2 - compile errors

Jesper Juhl jj at
Thu Apr 2 17:59:41 EDT 2009

Whoops, forgot to attach the .config for hostapd - it's attached to this 


On Thu, 2 Apr 2009, Jesper Juhl wrote:

> Hi,
> I'm trying to get my 'fit-PC slim' 
> (, currently 
> running Slackware Linux 12.2, going as a wireless access point.
> The built-in wifi NIC is RaLink RT2571W that supports both NIC and 
> access-point mode (as far as I've been able to find out) and should be 
> supported by the rt73usb driver in Linux.
> I tried to research the requirements for getting this working and 
> concluded that I'd need a Linux 2.6.29+ kernel, libnl 1.1+ and the latest 
> stable hostapd.
> I'm currently running a 2.6.29 kernel with all the required bits enabled 
> (.config available upon request) - actually, it's a git 
> snapshot as of today, so slightly patched compared to plain 2.6.29.
> I couldn't access the libnl homepage - it seems to be having problems 
> currently, so I grabbed the current git repo from - it build 
> and installed perfectly.
> My current problem is with hostapd. I downloaded the latest stable version 
> (0.6.9), created a .config (attached) and tried to build it, but it fails 
> with the following : 
> # make 
> ...
> cc -MMD -O2 -Wall -g -DHOSTAPD_DUMP_STATE -I../src -I../src/crypto 
> -I../src/utils -I../src/common -DCONFIG_CTRL_IFACE 
> -DCONFIG_NO_T_PRF -DCONFIG_IPV6   -c -o driver_nl80211.o driver_nl80211.c
> driver_nl80211.c: In function 'send_and_recv_msgs':
> driver_nl80211.c:182: warning: passing argument 1 of 
> 'nl_send_auto_complete' from incompatible pointer type
> driver_nl80211.c:197: warning: passing argument 1 of 'nl_recvmsgs' from 
> incompatible pointer type
> driver_nl80211.c: In function 'i802_init_sockets':
> driver_nl80211.c:2198: warning: implicit declaration of function 
> 'nl_handle_alloc_cb'
> driver_nl80211.c:2198: warning: assignment makes pointer from integer 
> without a cast
> driver_nl80211.c:2204: warning: passing argument 1 of 'genl_connect' from 
> incompatible pointer type
> driver_nl80211.c:2215: warning: passing argument 1 of 
> 'genl_ctrl_alloc_cache' from incompatible pointer type
> driver_nl80211.c:2215: error: too few arguments to function 
> 'genl_ctrl_alloc_cache'
> driver_nl80211.c: In function 'i802_deinit':
> driver_nl80211.c:2651: warning: implicit declaration of function 
> 'nl_handle_destroy'
> make: *** [driver_nl80211.o] Error 1
> Any input as to what I'm doing wrong would be greatly appreciated.
> If there's any additional info you need me to provide, don't hesitate to 
> ask.
> Thank you in advance for any help you may be able to provide.

Jesper Juhl <jj at>   
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# Example hostapd build time configuration
# This file lists the configuration options that are used when building the
# hostapd binary. All lines starting with # are ignored. Configuration option
# lines must be commented out complete, if they are not to be included, i.e.,
# just setting VARIABLE=n is not disabling that variable.
# This file is included in Makefile, so variables like CFLAGS and LIBS can also
# be modified from here. In most cass, these lines should use += in order not
# to override previous values of the variables.

# Driver interface for Host AP driver

# Driver interface for wired authenticator

# Driver interface for madwifi driver
#CFLAGS += -I../../madwifi # change to the madwifi source directory

# Driver interface for Prism54 driver

# Driver interface for drivers using the nl80211 kernel interface
# driver_nl80211.c requires a rather new libnl (version 1.1) which may not be
# shipped with your distribution yet. If that is the case, you need to build
# newer libnl version and point the hostapd build to use it.
#CFLAGS += -I$(LIBNL)/include
#LIBS += -L$(LIBNL)/lib

# Driver interface for FreeBSD net80211 layer (e.g., Atheros driver)
#CFLAGS += -I/usr/local/include
#LIBS += -L/usr/local/lib

# Driver interface for no driver (e.g., RADIUS server only)

# IEEE 802.11F/IAPP

# WPA2/IEEE 802.11i RSN pre-authentication

# PeerKey handshake for Station to Station Link (IEEE 802.11e DLS)

# IEEE 802.11w (management frame protection)
# This version is an experimental implementation based on IEEE 802.11w/D1.0
# draft and is subject to change since the standard has not yet been finalized.
# Driver support is also needed for IEEE 802.11w.

# Integrated EAP server

# EAP-MD5 for the integrated EAP server

# EAP-TLS for the integrated EAP server

# EAP-MSCHAPv2 for the integrated EAP server

# EAP-PEAP for the integrated EAP server

# EAP-GTC for the integrated EAP server

# EAP-TTLS for the integrated EAP server

# EAP-SIM for the integrated EAP server

# EAP-AKA for the integrated EAP server

# EAP-AKA' for the integrated EAP server
# This requires CONFIG_EAP_AKA to be enabled, too.

# EAP-PAX for the integrated EAP server

# EAP-PSK for the integrated EAP server (this is _not_ needed for WPA-PSK)

# EAP-SAKE for the integrated EAP server

# EAP-GPSK for the integrated EAP server
# Include support for optional SHA256 cipher suite in EAP-GPSK

# EAP-FAST for the integrated EAP server
# Note: Default OpenSSL package does not include support for all the
# functionality needed for EAP-FAST. If EAP-FAST is enabled with OpenSSL,
# the OpenSSL library must be patched (openssl-0.9.9-session-ticket.patch)
# to add the needed functions.

# Wi-Fi Protected Setup (WPS)
# Enable UPnP support for external WPS Registrars


# Trusted Network Connect (EAP-TNC)

# PKCS#12 (PFX) support (used to read private key and certificate file from
# a file that usually has extension .p12 or .pfx)

# RADIUS authentication server. This provides access to the integrated EAP
# server from external hosts using RADIUS.

# Build IPv6 support for RADIUS operations

# IEEE Std 802.11r-2008 (Fast BSS Transition)

# Use the hostapd's IEEE 802.11 authentication (ACL), but without
# the IEEE 802.11 Management capability (e.g., madwifi or FreeBSD/net80211)

# IEEE 802.11n (High Throughput) support

# Remove debugging code that is printing out debug messages to stdout.
# This can be used to reduce the size of the hostapd considerably if debugging
# code is not needed.

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