[avahi] Problems compiling avahi for Android NDK project

[Ruoruo Zhang]

You need to remove the patch for socket.c. New ndk has ipv6 support
already.

I had a stackoverflow question posted and answered regarding his issue.

>From Ruoruo (Lily) Zhang

On Oct 20, 2012, at 1:34 PM, Chris Perry <slushduck at hotmail.com> wrote:

Hi there,

Over the last few days I've been having a difficult time trying to build
avahi into a static or shared library for use with an existing Android NDK
project.

We have a few games in the App and Play stores and my task is to get
multiplayer working in the Android versions.
Specifically the task involves replacing the Bonjour component so that
these games can connect to each other via zeroconf.

I'm hoping that someone here can help me get avahi compiling.

Project uses android-ndk-r8b and is being built on OSX 10.7.4 using command
line (not eclipse)

Got the latest Avahi source from here:
http://www.linuxfromscratch.org/blfs/view/svn/basicnet/avahi.html

homebrewed all the necessary libs to get ./configure to run without errors.
./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
--disable-static --disable-mono --disable-monodoc  --disable-gdbm
--disable-libdaemon --disable-nls --disable-gtk --disable-gtk3
--disable-python --disable-qt3 --disable-qt4 --enable-core-docs
--with-distro=none

./configure runs with no apparent red flags.

make results in this compile error
socket.c: In function 'ipv6_pktinfo':
socket.c:271: warning: unused variable 'yes' [-Wunused-variable]
socket.c:270: warning: unused parameter 'fd' [-Wunused-parameter]
socket.c: In function 'avahi_send_dns_packet_ipv6':
socket.c:609: error: 'IPV6_PKTINFO' undeclared (first use in this function)
socket.c:609: error: (Each undeclared identifier is reported only once
socket.c:609: error: for each function it appears in.)
socket.c: In function 'avahi_recv_dns_packet_ipv6':
socket.c:869: error: 'IPV6_HOPLIMIT' undeclared (first use in this function)
socket.c:878: error: 'IPV6_PKTINFO' undeclared (first use in this function)
make[2]: *** [libavahi_core_la-socket.lo] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

Figured that it's not building against the android-ndk-r8b libs or finding
ipv6.h or something.
Checked my .bash_profile.sh file:
export
PATH=/Users/Muy01/Projects/Development/Android/android-sdks/tools/:$PATH
export
PATH=/Users/Muy01/Projects/Development/Android/android-sdks/platform-tools/:$PATH
export PATH=/Users/Muy01/Projects/Development/Android/android-ndk-r8b/:$PATH

added --host=arm-linux-androideabi to the ./configure arguments list
resulting in this error:
checking host system type... Invalid configuration `arm-linux-androideabi':
system `androideabi' not recognized

Couldn't figure out how to get a list of available host system types so
changed direction and decided to try and build the static lib via
Android.mk file.

Found this post on creating an appropriate Android.mk file
http://stackoverflow.com/questions/12618829/cant-compile-avahi-on-android

Realized that I don't have Android.mk files within all the subdirectories.

Researched, downloaded, built, Androgenizer to try and convert all the
Makefile.am files into Android.mk files.
http://cgit.collabora.com/git/user/derek/androgenizer.git/

Couldn't figure out or find info on how to do that though =/

Decided to try and create my own Android.mk file:
LOCAL_PATH := $(call my-dir)
ROOT_LOCAL_PATH :=$(call my-dir)

#Build avahi into a static lib
include $(CLEAR_VARS)
AVAHI_TOP := $(ROOT_LOCAL_PATH)/../avahi-0.6.31


MY_SOURCES := $(wildcard $(AVAHI_TOP)/avahi-core/*.c*)
MY_SOURCES += $(wildcard $(AVAHI_TOP)/avahi-common/*.c*)
LOCAL_C_INCLUDES := $(AVAHI_TOP)
LOCAL_SRC_FILES := $(MY_SOURCES:$(LOCAL_PATH)%=%)

LOCAL_MODULE    := avahi

include $(BUILD_STATIC_LIBRARY)

Results in compile time errors for avahi-core/iface-linux.c:33:0:
/avahi-0.6.31/avahi-core/iface-linux.h:27:8: Redefinition of 'struct
AvahiInterfaceMonitorOSDep'
/avahi-0.6.31/avahi-core/iface.h:46:16: Originally defined here
/avahi-0.6.31/avahi-core/iface-linux.h:33:9: Redeclaration of enumerator
'LIST_IFACE'
/avahi-0.6.31/avahi-core/iface.h:52:9: Previous definition of 'LIST_IFACE'
was here
/avahi-0.6.31/avahi-core/iface-linux.h:34:9: Redeclaration of enumerator
'LIST_ADDR'
/avahi-0.6.31/avahi-core/iface.h:53:9: Previous definition of 'LIST_ADDR'
was here
/avahi-0.6.31/avahi-core/iface-linux.h:35:9: Redeclaration of enumerator
'LIST_DONE'
/avahi-0.6.31/avahi-core/iface.h:54:9: Previous definition of 'LIST_DONE'
was here
/jni//../avahi-0.6.31/avahi-core/iface-linux.c: In function
'netlink_callback':


And now I'm pretty much stuck.

I tried #if 0'ing out the iface-linux.c and h files resulting in a
cascading slew of other errors, so prob a bad idea.
Thinking that it may be something I've done wrong with the ./configure
command?

I figure this must be something that quite a few developers are dealing
with so I must be missing something because I can't seem to find any good
information via google.

Any help would be much appreciated!

Thanks,
Chris

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