[avahi] Problems compiling avahi for Android NDK project

[Chris Perry]

Thanks Lilly, I did see your stackoverflow post (referenced below) which prompted us to update to android-ndk-r8b.
I'm actually curious as to how you made all those Android.mk files -like I mentioned below, I couldn't figure out Androgenizer.

Anyway, the error you posted was:
error: redefinition of 'struct in6_pktinfo'

When we try to make avahi from command line we get
>> socket.c:609: error: 'IPV6_PKTINFO' undeclared

When we try to build avahi from Android.mk we get:
>> /avahi-0.6.31/avahi-core/iface-linux.h:27:8: Redefinition of 'struct AvahiInterfaceMonitorOSDep'


Is that related to the patch as well?

I don't think we have the patch for socket.c but would like to confirm that somehow.
-I've searched socket.c for #ifdef __BIONIC__ and it is not there, so I assumed that our copy of avahi-0.6.31 is un-patched.
-Is that a correct assumption?

Not sure of the policies with this mailing list, I could attach socket.c if that would help someone confirm it is not patched.

Thanks again,
Chris


On Oct 20, 2012, at 1:38 PM, Ruoruo Zhang wrote:

> 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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