Legato Config Tree undefined reference to 'le_cfg_...'

david.geffers · August 19, 2021, 3:25pm

I encountered following error for my app with legato 19.11

[398/502] Linking C executable
FAILED: /home/ubuntu/ws/src/_build_vimon/wp76xx/app/beconn/obj/beconn/beconn 
/home/ubuntu/ws/leaf-data/dev/wp76-toolchain/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc --sysroot=/home/ubuntu/ws/leaf-data/dev/wp76-toolchain/sysroots/armv7a-neon-poky-linux-gnueabi -fPIE -pie -o /home/ubuntu/ws/src/_build_vimon/wp76xx/app/beconn/obj/beconn/beconn /home/ubuntu/ws/src/_build_vimon/wp76xx/app/beconn/obj/beconn/_main.c.o -rdynamic -Wl,--enable-new-dtags,-rpath="\$ORIGIN/../lib" -L "-L/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj" -lComponent_beconnComp "-L/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj" -lComponent_beconnComp "-L$LEGATO_BUILD/framework/lib" -llegato -lpthread -lrt -ldl -lm 
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickSetString'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickSetEmpty'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_SetEmpty'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_CreateWriteTxn'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_RemoveChangeHandler'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickGetInt'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetFloat'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickSetInt'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetBinary'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickGetString'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetPath'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetBool'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GoToNode'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_CreateReadTxn'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickSetFloat'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickGetBool'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_CommitTxn'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_SetFloat'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_DeleteNode'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_SetString'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_CancelTxn'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickGetFloat'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickSetBinary'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetNodeType'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_IsEmpty'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_SetBool'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickGetBinary'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetNodeName'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickDeleteNode'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_SetInt'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_QuickSetBool'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetInt'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GoToNextSibling'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_SetBinary'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GoToFirstChild'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GetString'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_NodeExists'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_GoToParent'
/home/ubuntu/ws/src/_build_vimon/wp76xx/component/d9ef2579a6f714e76e59aea260d66b2f/obj/libComponent_beconnComp.so: undefined reference to `le_cfg_AddChangeHandler'

beconn.cpp (short version)

#include "beconn.h"
#include "common-types.h"
#include "interfaces.h"
#include "legato.h"
#include "string"

string BeConn::ReadUrl(){

	string path="/beconn/url";
	string stringDefault="Error Reading Url";
	char* buffer=new char[LE_CFG_STR_LEN_BYTES];
	typedef struct  le_cfg_Iterator* IteratorRef;
	IteratorRef tree = le_cfg_CreateReadTxn(path.c_str());
	le_result_t res=le_cfg_GetString(tree, path.c_str(),buffer,LE_CFG_STR_LEN_BYTES, stringDefault.c_str());
	LE_ERROR_IF(res!=LE_OK,"error reading url from config tree");	

	return "";
}

beconn.adef

sandboxed: false

executables:
{
    beconn = ( beconnComp )
}

processes:
{
    run:
    {
        ( beconn )
    }
}

extern:
{
    beconn = beconn.beconnComp.beconn
}
requires:
{
    configTree:
    {
        [r] . // read/write access to 
    }
    
}

beconn.cdef

provides:

{

api:

{

beconn = $CURDIR/../beconn.api

le_cfg.api

}

}

sources:

{

beconn.cpp

}

cxxflags:

{

-std=c++0x

-I$CURDIR/../../include

}

jyijyi · August 19, 2021, 3:35pm

Cannot see the full compilation error …
Also please post the full project here

david.geffers · August 19, 2021, 3:37pm

here is the full log
out.txt (81.6 KB)

jyijyi · August 20, 2021, 1:31am

You can refer to following sample to use config tree:

github.com

legatoproject/legato-af/blob/master/apps/sample/eCallDemo/eCallAppComponent/eCallApp.c

/**
 * @file eCallApp.c
 *
 * This module implements an eCallDemo application. The following parameters need to be saved
 * in the config tree in order to run the application correctly:
 *
 * - config set eCallDemo:/settings/psap <number> string
 * - config set eCallDemo:/settings/hMinAccuracy <value> int
 * - config set eCallDemo:/settings/dirMinAccuracy <value> int
 *
 * Copyright (C) Sierra Wireless Inc.
 *
 */


#include "legato.h"
#include "interfaces.h"

This file has been truncated. show original

david.geffers · August 24, 2021, 1:24pm

sample is known, still not resolved

jyijyi · August 24, 2021, 1:45pm

then can you compile the sample eCallDemo?

If you can compile, that means your application has problem.

FYI, I can compile the eCallDemo application with WP76 R13 package.

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Legato Config Tree undefined reference to 'le_cfg_...'

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