HI Again,

The systemd issue is solved by installing the libsystemd in my native host, but I got another problem linking the lib with "ld" :

| /media/talel/data/menzu-zeus/menzu/tmp/work/aarch64-poky-linux/wirepas-sink-tool/1.0-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/../../libexec/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/ld: c-mesh-api/lib/build/mesh_api_lib.a(logger.o): Relocations in generic ELF (EM: 62)
| /media/talel/data/menzu-zeus/menzu/tmp/work/aarch64-poky-linux/wirepas-sink-tool/1.0-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/../../libexec/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/ld: c-mesh-api/lib/build/mesh_api_lib.a(logger.o): Relocations in generic ELF (EM: 62)
| /media/talel/data/menzu-zeus/menzu/tmp/work/aarch64-poky-linux/wirepas-sink-tool/1.0-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/../../libexec/aarch64-poky-linux/gcc/aarch64-poky-linux/9.2.0/ld: c-mesh-api/lib/build/mesh_api_lib.a: error adding symbols: file in wrong format
| collect2: error: ld returned 1 exit status
| makefile:102: recipe for target 'build/sinkService' failed

Here is the Makefile:

---------------------------

# Makefile for Wirepas Dbus Sink module

# Toolchain
CC ?= gcc
AS ?= as
LD ?= ld
AR ?= ar

# Paths, including trailing path separator
SOURCEPREFIX   := source/
BUILDPREFIX    := build/

# This example needs the mesh lib
MESH_LIB_FOLDER := c-mesh-api/lib/
MESH_LIB := $(MESH_LIB_FOLDER)build/mesh_api_lib.a

# General compiler flags
CFLAGS := -std=gnu99 -Wall -Werror -O

# Targets definition
MAIN_APP := sinkService

TARGET_APP := $(BUILDPREFIX)$(MAIN_APP)

# Add Api header (including logger files)
CFLAGS += -I$(MESH_LIB_FOLDER)api
# Add pthtread lib as needed by Mesh Lib
LDFLAGS += -pthread
# Add Reentrant flag as using pthread
CFLAGS += -D_REENTRANT

# Add systemd lib as needed for sd-bus
LDFLAGS += -lsystemd

# Add current directory for headers
CFLAGS += -I$(SOURCEPREFIX)

# Specific sources for this application
SOURCES := $(SOURCEPREFIX)main.c
SOURCES += $(SOURCEPREFIX)config.c
SOURCES += $(SOURCEPREFIX)data.c
SOURCES += $(SOURCEPREFIX)otap.c

OBJECTS := $(patsubst $(SOURCEPREFIX)%,                     \
                  $(BUILDPREFIX)%,                          \
                  $(SOURCES:.c=.o))

# Functions

# Also create the target directory if it does not exist
define COMPILE
   echo " CC $(2)"
   mkdir -p $(dir $(1))
   $(CC) $(CFLAGS) -c -o $(1) $(2)
endef

define LINK
   echo " Linking $(1)"
   $(CC) $(CFLAGS) -o $(1) $(2) $(MESH_LIB) $(LDFLAGS)
endef

define CLEAN
   echo " Cleaning up"
   $(RM) -r $(BUILDPREFIX)
   make -C $(MESH_LIB_FOLDER) clean
endef

# Target rules

# Use dependency files automatically generated by GCC.
# First collect all C source files
AUTODEPS := $(patsubst $(SOURCEPREFIX)%.c, $(BUILDPREFIX)%.d, $(SOURCES))

ifeq ($(V),1)
# "V=1" on command line, print commands.
else
# Default, do not print commands.
.SILENT:
endif

.PHONY: all
all: app

app: $(TARGET_APP)

.PHONY: clean
clean:
   $(call CLEAN)

$(MESH_LIB_FOLDER):
   $(error Please add the c-mesh-api library under c-mesh-api folder.\
            It is needed to handle dualmcu protocol)

.PHONY: $(MESH_LIB)
$(MESH_LIB): $(MESH_LIB_FOLDER)
   make -C $(MESH_LIB_FOLDER)

$(BUILDPREFIX)%.o: $(SOURCEPREFIX)%.c
   $(call COMPILE,$@,$<)

$(BUILDPREFIX)$(MAIN_APP): $(OBJECTS) $(MESH_LIB)
   $(call LINK,$@,$^)

---------------------------

What is wrong ?

Thanks ,Talel