Android App Development include LDAP on MAC OS X

mkmp29

My error is:

:-1: error: error: cannot find -lldap

I think there is mistake in the .pro file:

The Filestructure is:

- *.pro
- lib
  - compiled
    - OpenLDAP
       - lib
       - include 
       - *
- other files

in the lib directory are these files:

liblber-2-devel.so.0       libldap.la
liblber-2-devel.so.0.0.0   libldap.so
liblber.a                  libldap_r-2-devel.so.0
liblber.la                 libldap_r-2-devel.so.0.0.0
liblber.so                 libldap_r.a
libldap-2-devel.so.0       libldap_r.la
libldap-2-devel.so.0.0.0   libldap_r.so
libldap.a

sierdzio

@mkmp29 said in Android App Development include LDAP on MAC OS X:

-L lib/compiled/OpenLDAP/lib -lldap

There should be no space between '-L' and your library search path.

mkmp29

@mkmp29 said in Android App Development include LDAP on MAC OS X:

INCLUDEPATH += lib/compiled/OpenLDAP/include
LIBS += -L lib/compiled/OpenLDAP/lib -lldap
ANDROID_EXTRA_LIBS += lib/compiled/OpenLDAP/lib/libldap.so

Didn't work either. I just get the message for multiple lib function:

ldapAuth.o:ldapAuth.cpp:function LDAPAuth::~LDAPAuth(): error: undefined reference to 'ldap_unbind'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::~LDAPAuth(): error: undefined reference to 'ldap_unbind'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::checkStatus(QString const&, int): error: undefined reference to 'ldap_err2string'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::checkStatus(QString const&, int): error: undefined reference to 'ldap_err2string'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_initialize'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_initialize'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_set_option'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_set_option'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_start_tls_s'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_start_tls_s'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::init(): error: undefined reference to 'ldap_simple_bind_s'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_search_ext_s'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_first_entry'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_get_dn'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_first_attribute'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_get_values'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_next_attribute'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_memfree'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_next_entry'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_msgfree'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::search(QString const&): error: undefined reference to 'ldap_msgfree'
ldapAuth.o:ldapAuth.cpp:function LDAPAuth::authentificate(QString const&, QString const&): error: undefined reference to 'ldap_simple_bind_s'
collect2: error: ld returned 1 exit status

Looks like the library is compiled wrong ?

SGaist

Hi,

Did you check the x86 vs x86_64 architecture for your library ?

mkmp29

@SGaist
I can only compile the library for the arm architecture. Other architecture fail because they can't find libraries...

Is there a better solution than compile the library for every architecture of the enddevice?

SGaist

No there's not.

The only alternative is to check whether your targets already have them available in their root filesystem and re-use them.

mkmp29

This post is deleted!

mkmp29

@SGaist

I can compile the application and push it to the virtual device. But i get the error:

W System.err: Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: library "liblber-2-devel.so.0" not found

This file is contained in the lib folder of my cross compiled library. I read a little bit and tried to load the library during runtime with the QT Object: QLibrary and the function load. But it didnt work.

this is the part of my .pro file

ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap.so
ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/liblber.so
ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap_r.so
#ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/liblber-2-devel.so.0
#ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/liblber-2-devel.so.0.0.0
#ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap-2-devel.so.0
#ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap-2-devel.so.0.0.0
#ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap_r-2-devel.so.0
#ANDROID_EXTRA_LIBS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap_r-2-devel.so.0.0.0

LIBS += -L$$PWD/lib/compiled/openldap-i686-linux-android_16/lib/ -lldap

INCLUDEPATH += $$PWD/lib/compiled/openldap-i686-linux-android_16/include
DEPENDPATH += $$PWD/lib/compiled/openldap-i686-linux-android_16/include

PRE_TARGETDEPS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap.a
LIBS += -L$$PWD/lib/compiled/openldap-i686-linux-android_16/lib/ -llber

INCLUDEPATH += $$PWD/lib/compiled/openldap-i686-linux-android_16/include
DEPENDPATH += $$PWD/lib/compiled/openldap-i686-linux-android_16/include

PRE_TARGETDEPS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/liblber.a

LIBS += -L$$PWD/lib/compiled/openldap-i686-linux-android_16/lib/ -lldap_r

INCLUDEPATH += $$PWD/lib/compiled/openldap-i686-linux-android_16/include
DEPENDPATH += $$PWD/lib/compiled/openldap-i686-linux-android_16/include

PRE_TARGETDEPS += $$PWD/lib/compiled/openldap-i686-linux-android_16/lib/libldap_r.a

Library loading at the beginning of the main method.

    QLibrary ldap("ldap");
    QLibrary ldap_r("ldap_r");
    QLibrary lber("lber");

    if(!ldap.load() || !lber.load() || !ldap_r.load()){
        qDebug() << "Failed loading library";
    }

The libraries that are contained in the lib folder are listed above

SGaist

IIRC, android doesn't support library versioning so ensure that you don't have a symbolic link copied to your package but a copy of the library.

mkmp29

This post is deleted!

mkmp29

@SGaist said in Android App Development include LDAP on MAC OS X:

IIRC, android doesn't support library versioning so ensure that you don't have a symbolic link copied to your package but a copy of the library.

I removed the links from the libraries, deleted the links and renamed the lib to its original name, but the error still appears...

SGaist

Which one ? The missing symbol or the dlopen error ?

mkmp29

@SGaist

the dlopen error.

I also tried to copy the versioned libs into the same folder in the android libs directory. But it didn't work.

SGaist

Why are you dlopening the library on Android rather than linking to it ?

mkmp29

@SGaist

this does the the library... I only include the library into my project

SGaist

@mkmp29 said in Android App Development include LDAP on MAC OS X:

this does the the library...

Can you rephrase that please ? I don't understand what it means at all.

sierdzio

@SGaist said in Android App Development include LDAP on MAC OS X:

@mkmp29 said in Android App Development include LDAP on MAC OS X:

this does the the library...

Can you rephrase that please ? I don't understand what it means at all.

If I get it right, he means that he links the LDAP library. That library, however, uses dlopen internally to access yet another library.

mkmp29

@sierdzio

yes thats right.

SGaist

Then this stackoverflow thread might help.

anji 0

@mkmp29 I'm trying to integrate openldap libraries with windows, android and iOS applications built using Qt. Can you please help me with the steps for compiling the openldap libraries using GCC compiler? Thanks in advance.