Hello lwIP users and developers,

I am facing some linking issues in a project where I'm trying to build lwip 
e.g. in netbios.c :

build\versatilepb\as.infrastructure\arch\common\lwip\netbios.o: In function 
`netbios_recv':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:285:
 undefined reference to `pbuf_alloc'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:311:
 undefined reference to `udp_sendto'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:314:
 undefined reference to `pbuf_free'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:320:
 undefined reference to `pbuf_free'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:322:
 undefined reference to `netif_default'
build\versatilepb\as.infrastructure\arch\common\lwip\netbios.o: In function 
`netbios_init':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:330:
 undefined reference to `udp_new'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:334:
 undefined reference to `udp_bind'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:335:
 undefined reference to `udp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:337:
 undefined reference to `ip_addr_any'

I have attached the text file for the whole list. Even after explicitly adding 
#include "lwip/pbuf.h" there's still an undefined reference to `pbuf_alloc'.

Can you please give me some hints about what could be the possible problems? Or 
connect me to someone who can help me?

Regards,
Huzaifa Saadat,
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\release\ascore>scons
scons: Reading SConscript files ...
INFO: set PACKET_LIB_ADAPTER_NR=0/1/2/3... to choose the right oracle virtual 
adapter
INFO: set LWIP_DEBUG=yes to enable debug
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\lwext4
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\/release/download/master
fatal: not a git repository (or any parent up to mount point /)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
rm -R -f build_generic
mkdir build_generic
cd build_generic && cmake -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=Release 
-DVERSION_MAJOR=1 -DVERSION_MINOR=0 -DVERSION_PATCH=0 -DVERSION=1.0.0-  
-DWIN32=1 -DCMAKE_TOOLCHAIN_FILE=../toolchain/generic.cmake ..
-- The C compiler identification is GNU 10.2.0
-- Check for working C compiler: /mingw64/bin/cc.exe
-- Check for working C compiler: /mingw64/bin/cc.exe - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: 
/d/HuzaifaSaadat/AUTOSARCC/Alten_ZF/VirtualCP/as-master/com/as.infrastructure/system/fs/lwext4/lwext4/lwext4-master/build_generic
scons: done reading SConscript files.
scons: Building targets ...
LINK versatilepb.exe
build\versatilepb\as.infrastructure\arch\common\lwip\netbios.o: In function 
`netbios_recv':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:285:
 undefined reference to `pbuf_alloc'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:311:
 undefined reference to `udp_sendto'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:314:
 undefined reference to `pbuf_free'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:320:
 undefined reference to `pbuf_free'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:322:
 undefined reference to `netif_default'
build\versatilepb\as.infrastructure\arch\common\lwip\netbios.o: In function 
`netbios_init':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:330:
 undefined reference to `udp_new'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:334:
 undefined reference to `udp_bind'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:335:
 undefined reference to `udp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/netbios.c:337:
 undefined reference to `ip_addr_any'
build\versatilepb\as.infrastructure\arch\common\lwip\sys_arch.o: In function 
`LwIP_Init':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:589:
 undefined reference to `tcpip_init'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:604:
 undefined reference to `ipaddr_addr'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:605:
 undefined reference to `ipaddr_addr'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:606:
 undefined reference to `ipaddr_addr'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:612:
 undefined reference to `netif_add'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:614:
 undefined reference to `netif_set_default'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:620:
 undefined reference to `netif_set_addr'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:624:
 undefined reference to `netif_set_up'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\arch\common\lwip/sys_arch.c:635:
 undefined reference to `tcpip_input'
build\versatilepb\as.infrastructure\communication\Pci\pci_asnet.o: In function 
`Eth_Isr':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:152:
 undefined reference to `pbuf_free'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:157:
 undefined reference to `pbuf_free'
build\versatilepb\as.infrastructure\communication\Pci\pci_asnet.o: In function 
`low_level_input':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:448:
 undefined reference to `pbuf_alloc'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:452:
 undefined reference to `pbuf_header'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:466:
 undefined reference to `pbuf_header'
build\versatilepb\as.infrastructure\communication\Pci\pci_asnet.o: In function 
`low_level_output':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:490:
 undefined reference to `pbuf_header'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:503:
 undefined reference to `pbuf_header'
build\versatilepb\as.infrastructure\communication\Pci\pci_asnet.o: In function 
`ethernetif_init':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\Pci/pci_asnet.c:537:
 undefined reference to `etharp_output'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd.o: In function 
`SoAd_SocketClose':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd.c:215:
 undefined reference to `ipaddr_addr'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd.o: In function 
`SoAd_Init':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd.c:601:
 undefined reference to `ipaddr_addr'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_SocketCloseImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:27:
 undefined reference to `lwip_close'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_SocketStatusCheckImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:36:
 undefined reference to `lwip_getsockopt'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_SendImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:46:
 undefined reference to `lwip_send'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_SendToImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:58:
 undefined reference to `lwip_sendto'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_CreateSocketImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:63:
 undefined reference to `lwip_socket'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_BindImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:82:
 undefined reference to `lwip_ioctl'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:84:
 undefined reference to `lwip_setsockopt'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:95:
 undefined reference to `lwip_bind'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:99:
 undefined reference to `ipaddr_addr'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:105:
 undefined reference to `lwip_setsockopt'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_ListenImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:114:
 undefined reference to `lwip_listen'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_AcceptImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:123:
 undefined reference to `lwip_accept'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:133:
 undefined reference to `lwip_ioctl'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:135:
 undefined reference to `lwip_setsockopt'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_RecvImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:147:
 undefined reference to `lwip_recv'
build\versatilepb\as.infrastructure\communication\SoAd\SoAd_LWIP.o: In function 
`SoAd_RecvFromImpl':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\communication\SoAd/SoAd_LWIP.c:157:
 undefined reference to `lwip_recvfrom'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_dataerr':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:417:
 undefined reference to `lwip_strerr'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_dataclose':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:427:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:428:
 undefined reference to `tcp_sent'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:429:
 undefined reference to `tcp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:433:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:434:
 undefined reference to `tcp_close'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`send_data':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:455:
 undefined reference to `tcp_write'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:465:
 undefined reference to `tcp_write'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_datarecv':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:636:
 undefined reference to `tcp_recved'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:638:
 undefined reference to `pbuf_free'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_dataconnected':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:669:
 undefined reference to `tcp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:673:
 undefined reference to `tcp_sent'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:675:
 undefined reference to `tcp_err'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_dataaccept':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:703:
 undefined reference to `tcp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:707:
 undefined reference to `tcp_sent'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:709:
 undefined reference to `tcp_err'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`open_dataconnection':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:746:
 undefined reference to `tcp_new'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:749:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:753:
 undefined reference to `tcp_connect'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`cmd_pasv':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:950:
 undefined reference to `tcp_new'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:968:
 undefined reference to `tcp_bind'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:985:
 undefined reference to `tcp_listen_with_backlog'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1000:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1002:
 undefined reference to `tcp_accept'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`cmd_abrt':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1011:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1012:
 undefined reference to `tcp_sent'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1013:
 undefined reference to `tcp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1014:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1015:
 undefined reference to `tcp_abort'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`send_msgdata':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1209:
 undefined reference to `tcp_write'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1219:
 undefined reference to `tcp_write'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_msgerr':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1250:
 undefined reference to `lwip_strerr'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_msgclose':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1264:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1265:
 undefined reference to `tcp_sent'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1266:
 undefined reference to `tcp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1274:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1275:
 undefined reference to `tcp_close'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_msgrecv':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1303:
 undefined reference to `tcp_recved'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1352:
 undefined reference to `pbuf_free'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_msgaccept':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1408:
 undefined reference to `tcp_arg'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1412:
 undefined reference to `tcp_recv'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1416:
 undefined reference to `tcp_sent'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1418:
 undefined reference to `tcp_err'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1420:
 undefined reference to `tcp_poll'
build\versatilepb\as.infrastructure\system\net\ftp\ftpd.o: In function 
`ftpd_init':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1432:
 undefined reference to `tcp_new'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1435:
 undefined reference to `tcp_bind'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1436:
 undefined reference to `tcp_listen_with_backlog'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1437:
 undefined reference to `tcp_accept'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\net\ftp/ftpd.c:1445:
 undefined reference to `ip_addr_any'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_fopen':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:99:
 undefined reference to `ext4_fopen'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_fclose':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:120:
 undefined reference to `ext4_fclose'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_fread':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:136:
 undefined reference to `ext4_fread'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_fwrite':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:150:
 undefined reference to `ext4_fwrite'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_fseek':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:170:
 undefined reference to `ext4_fseek'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_ftell':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:177:
 undefined reference to `ext4_ftell'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_unlink':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:186:
 undefined reference to `ext4_fremove'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_stat':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:212:
 undefined reference to `ext4_dir_open'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:216:
 undefined reference to `ext4_dir_close'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:222:
 undefined reference to `ext4_fopen'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:226:
 undefined reference to `ext4_fsize'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:227:
 undefined reference to `ext4_fclose'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_opendir':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:261:
 undefined reference to `ext4_dir_open'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_readdir':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:290:
 undefined reference to `ext4_dir_entry_next'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_closedir':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:312:
 undefined reference to `ext4_fclose'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_chdir':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:333:
 undefined reference to `ext4_inode_exist'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_mkdir':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:346:
 undefined reference to `ext4_dir_mk'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_rmdir':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:357:
 undefined reference to `ext4_dir_rm'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_rename':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:368:
 undefined reference to `ext4_frename'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_mount':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:404:
 undefined reference to `ext4_device_register'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:407:
 undefined reference to `ext4_mount'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:412:
 undefined reference to `ext4_device_unregister'
build\versatilepb\as.infrastructure\system\fs\vfs\vfs_lwext4.o: In function 
`lwext_mkfs':
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:437:
 undefined reference to `ext4_device_register'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:446:
 undefined reference to `ext4_mkfs'
D:\HuzaifaSaadat\AUTOSARCC\VirtualCP\as-master\com\as.infrastructure\system\fs\vfs/vfs_lwext4.c:455:
 undefined reference to `ext4_device_unregister'
scons: *** [versatilepb.exe] Error 1
scons: building terminated because of errors.
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