Android App Development include LDAP on MAC OS X

[mkmp29]

This post is deleted!

[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.