User forums > General (but related to Code::Blocks)
Program works from commandline, but not from codeblocks
resander:
For Ubuntu 8.10. using code::blocks rev 5607.
The program connects ok via ODBC to Oracle Express on the Ubuntu commandline:
ken@ken-desktop:~/projects/lsken/bin/Debug$ ./lsken
After SQLConnect << my tracemessage
ODBC connected OK << my tracemessage
but not from codeblocks Run in Build menu or Start on Debug menu.
I receive error:
Can't open lib /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib/libsqora.so.10.1
The so file is the Oracle ODBC driver and the unixODBC driver manager outputs the message.
The startup script bashrc sets LD_LIBRARY_PATH to:
/usr/lib:/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib.
When using Start on Debug menu I stopped after the error and checked the library path:
ken@ken-desktop:~/projects/lsken/bin/Debug$ echo $LD_LIBRARY_PATH
/usr/lib:/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib
which is still the same.
What may be the cause?
resander:
Problem is the same for Release mode, i.e. the program ran OK from commandline and failed from Run menu in codeblocks.
I have written a minimal test program in main.cpp that shows the problem. This (small as program, but a bit long as text in a post):
#include <stdio.h>
#include <string.h>
#include "sql.h"
#include "sqlext.h"
static void dspmessage ( const char * title , const char * msg )
{
printf ( "%s: %s " , title , msg ) ;
printf ( "Press Return/Enter to continue\n" ) ;
getchar ( ) ; //to wait
}
static void sqlerrinfo ( int handletp , int handle , const char * logstring )
{
char txt [ 4002 ] ;
int maxlen = 4000 ;
int ofs = sprintf ( txt , "%s\n" , logstring ) ;
int recnbr = 1;
long nerr ;
short lenerrmsg ;
int ln ;
unsigned char state [ 12 ] = { 0 } ;
unsigned char msg [ SQL_MAX_MESSAGE_LENGTH+1 ] = { 0 } ;
char line [ 802 ] = { 0 } ;
int rc = SQL_SUCCESS ;
while ( rc != SQL_NO_DATA_FOUND)
{
rc = SQLGetDiagRec ( handletp , (SQLHANDLE)handle , recnbr ,
state, &nerr , msg , SQL_MAX_MESSAGE_LENGTH ,
&lenerrmsg ) ;
ln = sprintf ( line , "%d: st=%s, nerr=%d, msg=\n%s\n" ,
recnbr , state , (int)nerr , msg ) ;
if ( ln+ofs < maxlen )
{
strcpy ( txt+ofs , line ) ;
ofs += ln ;
}
else
{
break ;
} ;
recnbr++; // for next diagnostic record.
}
dspmessage ( "usage error" , txt ) ;
}
static bool success ( SQLRETURN rc )
{
return (rc == SQL_SUCCESS) || (rc == SQL_SUCCESS_WITH_INFO) ;
}
static bool connectSrv ( const char * dsn , const char * uid , const char * pwd )
{
SQLHENV henv;
SQLRETURN rc = SQLAllocHandle ( SQL_HANDLE_ENV , SQL_NULL_HANDLE , &henv ) ;
if ( !success ( rc ) )
{
dspmessage ( "sqlapi" , "SQLAllocHandle Env failed" ) ;
return false ;
}
rc = SQLSetEnvAttr ( henv, SQL_ATTR_ODBC_VERSION , (void*)SQL_OV_ODBC3 , 0 ) ;
if ( !success ( rc ) )
{
sqlerrinfo ( SQL_HANDLE_ENV , (int)henv , "Set ODBC version fail" ) ;
SQLFreeEnv ( henv ) ;
return false ;
} ;
SQLHDBC hdbc;
rc = SQLAllocHandle ( SQL_HANDLE_DBC , henv , &hdbc ) ;
if ( !success ( rc ) )
{
sqlerrinfo ( SQL_HANDLE_ENV , (int)hdbc , "Alloc connection handle error" ) ;
SQLFreeEnv ( henv ) ;
return false ;
} ;
SQLSetConnectAttr ( hdbc , SQL_LOGIN_TIMEOUT , (void*)5 , 0 ) ;
char msg [ 100 ] ;
rc = SQLConnect ( hdbc , (SQLCHAR*)dsn , SQL_NTS,
(SQLCHAR*) uid , SQL_NTS,
(SQLCHAR*) pwd , SQL_NTS);
if ( !success ( rc ) )
{
sprintf ( msg , "SQLConn: dsn=%s user=%s pwd=%s\n" , dsn , uid , pwd ) ;
sqlerrinfo ( SQL_HANDLE_DBC , (int)hdbc , msg ) ;
SQLFreeConnect ( hdbc ) ;
SQLFreeEnv ( henv ) ;
dspmessage ( "sqlapi" , "SQLConnect failed" ) ;
return false ;
} ;
SQLHSTMT hstmt;
rc = SQLAllocHandle ( SQL_HANDLE_STMT , hdbc , &hstmt);
if ( !success ( rc ) )
{
sqlerrinfo ( SQL_HANDLE_DBC , (int)hdbc , "Alloc Stmt error" ) ;
SQLDisconnect ( hdbc ) ;
SQLFreeConnect ( hdbc ) ;
SQLFreeEnv ( henv ) ;
return false ;
} ;
return true ;
}
int main ( int argc , char * argv[] )
{
if ( connectSrv ( "TestDBDSN" , "hr" , "hr" ) )
{
dspmessage ( "sqlapi" , "ODBC Connect OK\n" ) ;
}
return 0 ;
}
I am using unixODBC 2.2.11-16build2 available via Synaptic package Manager in Ubuntu 8.10. The sql header files are from the Include directory of the installed unixODBC. The unixODBC is in usr/lib/libodbc.so.1 and is linked using local linker settings section in codeblocks. There are no global linker settings.
The oracle ODBC driver is in /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib/libsqora.so.10.1
I have added the following to the Ubuntu startup script:
# Added by ken for oracle
ODBCINI=/etc/odbc.ini
export ODBCINI
ORACLE_HOME=/usr/lib/oracle/xe/app/oracle/product/10.2.0/server
export ORACLE_HOME
TNS_ADMIN=$ORACLE_HOME/network/admin
export TNS_ADMIN
LD_LIBRARY_PATH=/usr/lib:/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib
export LD_LIBRARY_PATH
Earlier on I had exactly the same error when I had set the LD_LIBRARY_PATH incorrectly, but it is correct now. Is there any possibility of codeblocks disturbing the LD_LIBRARY_PATH value? OR is there anything that I may have done wrong when setting up the project that might cause this?
To summarise:
THISAPP + unixODBC in Debug mode OK on commandline
THISAPP + unixODBC in Release mode OK on commandline
THISAPP + unixODBC + CodeBlocks Start in Debug mode fails to load the Oracle ODBC driver
APP + unixODBC + CodeBlocks Run in Release mode fails to load the Oracle ODBC driver
What else can I do to try to pinpoint the problem?
Jenna:
Did you try to start C::B from a console, where your variables and LD_LIBRARY_PATH are definitely visible ?
Maybe it runs in a context, where they are not set (correctly).
resander:
Thanks Jens,
I always start from the Applications->Programming->Codeblocks on the Ubuntu menu (don't know any other way). The project opens OK and behaves as in all other projects I have been using before for codeblocks.
This seems to be a codeblocks problem from the perspective of a naive beginner like myself. But of course I dont' know. I cannot solve this.
resander:
Jens,
I misread your previous post and have just started codeblocks from my home directory from the command line by ken@ken-desktop:~$ /usr/bin/codeblocks
I completely rebuilt Debug and Release versions, but result is still same.
I also defined LD_LIBRARY_PATH via Settings->Environment->Environment-variables and rebuilt, but still the same.
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