Linuxcnc-ethercat: undefined symbol: ecrt_slave_config_sdo

lcec: dlopen: /home/vaerks/linuxcnc/rtlib/lcec.so: undefined symbol: ecrt_slave_config_sdo
lcec: dlopen: /home/vaerks/linuxcnc/rtlib/lcec.so: undefined symbol: ecrt_slave_config_sdo

hal/postgui.hal:7: waitpid failed /home/vaerks/linuxcnc/bin/rtapi_app lcec
hal/postgui.hal:7: /home/vaerks/linuxcnc/bin/rtapi_app exited without becoming ready
hal/postgui.hal:7: insmod for lcec failed, returned -1

ldd ~/linuxcnc/rtlib/lcec.so
	linux-vdso.so.1 (0x00007ffc4c342000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7837fbb000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7837bca000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f7838579000)

$ export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu$LD_LIBRARY_PATH
$ $LD_LIBRARY_PATH
bash: /usr/lib/x86_64-linux-gnu: Is a directory

$LD_LIBRARY_PATH
bash: /home/vaerks/linuxcnc/lib:/usr/lib/x86_64-linux-gnu: No such file or directory

include ../config.mk
include Kbuild

cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
             > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)

.PHONY: all clean install

ifeq ($(BUILDSYS),kbuild)

module = $(patsubst %.o,%.ko,$(obj-m))

ifeq (,$(findstring -Wframe-larger-than=,$(EXTRA_CFLAGS)))
  EXTRA_CFLAGS += $(call cc-option,-Wframe-larger-than=2560)
endif

$(module):
	$(MAKE) EXTRA_CFLAGS="$(EXTRA_CFLAGS)" KBUILD_EXTRA_SYMBOLS="$(RTLIBDIR)/Module.symvers $(RTAIDIR)/modules/ethercat/Module.symvers" -C $(KERNELDIR) SUBDIRS=`pwd` CC=$(CC) V=0 modules

clean::
	rm -f $(obj-m)
	rm -f *.mod.c .*.cmd
	rm -f modules.order Module.symvers
	rm -rf .tmp_versions

else

module = $(patsubst %.o,%.so,$(obj-m))

EXTRA_CFLAGS := $(filter-out -Wframe-larger-than=%,$(EXTRA_CFLAGS))

$(module): $(lcec-objs)
	$(CC) -shared -o $@ $(lcec-objs) -Wl,-rpath,$(LIBDIR) -L$(LIBDIR) -llinuxcnchal -lethercat -lrt

%.o: %.c
	$(CC) -o $@ $(EXTRA_CFLAGS) -Os -c $<

endif

all: $(module)

clean::
	rm -f $(module)
	rm -f $(lcec-objs)

install: $(module)
	mkdir -p $(DESTDIR)$(RTLIBDIR)
	cp $(module) $(DESTDIR)$(RTLIBDIR)/

cd ~/linuxcnc-ethercat
make clean
make 
sudo make install