I'm trying to port one DNS tool to Android that depends on libresolv (at least to my understanding).
So basically it looks like Android has libresolv (after android-21) since at least the headers are there. But when compiling I get a linker error
error: undefined reference to '__ns_parserr'
error: undefined reference to 'p_class'
error: undefined reference to 'p_type'
error: undefined reference to '__ns_name_uncompress'
error: undefined reference to '__ns_initparse'
error: undefined reference to '__ns_msg_getflag'
If I've understood correctly (https://en.wikipedia.org/wiki/Bionic_(software)) all those should be in libc, but for some reason they are not.
Any advise?
Oh BTW this is the thing I'm trying to port
https://github.com/verisign/dnscap/blob/master/dump_dns.c
Related
I am quite sure the answer is yes... but I would like to ensure.
My goal is to compile Samba 4.2.0 on a D-Link DNS-323, but my last error is:
default/source3/smbd/notify_inotify_75.o: In function `inotify_setup':
notify_inotify.c:(.text+0x984): undefined reference to `inotify_init'
default/source3/smbd/notify_inotify_75.o: In function `watch_destructor':
notify_inotify.c:(.text+0xe34): undefined reference to `inotify_rm_watch'
default/source3/smbd/notify_inotify_75.o: In function `inotify_watch':
notify_inotify.c:(.text+0xfd4): undefined reference to `inotify_add_watch'
notify_inotify.c:(.text+0x1150): undefined reference to `inotify_rm_watch'
notify_inotify.c:(.text+0x11ec): undefined reference to `inotify_rm_watch'
So, I think my only hope would be to compile a newer Kernel. Do I am right?
Unable to figure out why this error is showing up
Your problem is that you are trying to loop though the data object which is not a array. You can only use the forEach() function on arrays. In addition, the data object is undefined meaning that it does not exist.
Since I can not see all of your code, please check out this question Cannot read property 'forEach' of undefined on how to fix the undefined data object. If that still doesn't fix the problem, read up on the documentation for supertest.
So I installed Code::Blocks with minGW v12.11 newest one. I can easly compile programs in debug mode but when I try release I get a lot of errors which i posted below. I would really appreciate reseponses.
obj\Release\koniec.o:koniec.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\koniec.o:koniec.cpp:(.eh_frame+0x43)||undefined reference to `__gxx_personality_v0'|
obj\Release\nowa_gra.o:nowa_gra.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\nowa_gra.o:nowa_gra.cpp:(.eh_frame+0x43)||undefined reference to `__gxx_personality_v0'|
obj\Release\pytania\pytanie_1.o:pytanie_1.cpp:(.text.startup+0xd5)||undefined reference to `_Unwind_Resume'|
obj\Release\pytania\pytanie_1.o:pytanie_1.cpp:(.eh_frame+0x9f)||undefined reference to `__gxx_personality_v0'|
obj\Release\pytania\pytanie_2.o:pytanie_2.cpp:(.text.startup+0xd5)||undefined reference to `_Unwind_Resume'|
obj\Release\pytania\pytanie_2.o:pytanie_2.cpp:(.eh_frame+0x9f)||undefined reference to `__gxx_personality_v0'|
obj\Release\pytania\pytanie_3.o:pytanie_3.cpp:(.text.startup+0xd5)||undefined reference to `_Unwind_Resume'|
obj\Release\pytania\pytanie_3.o:pytanie_3.cpp:(.eh_frame+0x9f)||undefined reference to `__gxx_personality_v0'|
obj\Release\tabela_wynikow.o:tabela_wynikow.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\tabela_wynikow.o:tabela_wynikow.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\tabela_wynikow.o:tabela_wynikow.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\tabela_wynikow.o:tabela_wynikow.cpp:(.eh_frame+0x43)||undefined reference to `__gxx_personality_v0'|
obj\Release\zapis.o:zapis.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\zapis.o:zapis.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\zapis.o:zapis.cpp|| undefined reference to `_Unwind_Resume'|
obj\Release\zapis.o:zapis.cpp:(.eh_frame+0x43)||undefined reference to `__gxx_personality_v0'|
||=== Build finished: 18 errors, 0 warnings (0 minutes, 0 seconds) ===|
The problem was i opened some old projects and that's why it bugged when I made a new one it compiled smoothly.
i got a code of 3D hanoy game (using opengl ,glut). when i try to run this game using VS 12 ,following errors
are showing ---
glutTimerFunc is undefined
glutInit is undefined
glutWindowSize is undefined
glPushMatrix is undefined
glRotatef is undefined
glTranslatef is undefined
glutSolidTorus is undefined
glPopMatirx is undefined
as i guess these problems are about missing functions , how can i add these functions in my code to run it ?
Follow this or this tutorial that introduces you to the basics of building an application using GLUT.
Hope it helps
I am seeing this warning in my JNI code:
JNI WARNING: 0x44be7258 is not a valid JNI reference
I am assigning a LocalReference returned by FindClass method in JNI to my class member variable within the constructor:
Header:
...
jclass m_class;
Cpp:
m_class = env->FindClass( classSignature );
Does FindClass return a LocalReference and storing it in my class member variable is invalid?
From the Liang book, chapter 5.1.1 "Local References"
Most JNI functions create local references ... A local reference is valid only within the dynamic context of the native method that creates it, and only within that one invocation of the native method. All local references created during the execution of a native method will be freed once the native method returns.
Followed by an illegal code example which uses exactly your method FindClass. In other words, yes, FindClass returns a local reference. In the following chapter is an example of creating a global reference which is usable in the way you wanted. Don't forget to DeleteGlobalRef when you don't need it anymore. Otherwise JVM cannot GC it and your program will leak.