Bitbake 构建了 C 项目，但不包括镜像 rootfs 的依赖库

Question

With the Makefile and hello.bb listed below I am able to compile and run my C project on target device. The issue I am facing is that libraries sqlite3 libmicrohttpd json-c are not included to rootfs of the image and I'm getting errors like that:

admin@orange-pi-r1:~# /var/hello.bin
Error loading shared library libmicrohttpd.so.12: No such file or directory (needed by /var/hello.bin)
Error loading shared library libjson-c.so.5: No such file or directory (needed by /var/hello.bin)
Error relocating /var/hello.bin: json_object_new_string: symbol not found
Error relocating /var/hello.bin: MHD_destroy_response: symbol not found
Error relocating /var/hello.bin: json_object_object_add: symbol not found
Error relocating /var/hello.bin: MHD_create_response_from_buffer: symbol not found
Error relocating /var/hello.bin: MHD_queue_response: symbol not found
Error relocating /var/hello.bin: MHD_start_daemon: symbol not found
Error relocating /var/hello.bin: json_object_new_array: symbol not found
Error relocating /var/hello.bin: MHD_add_response_header: symbol not found
Error relocating /var/hello.bin: json_object_put: symbol not found
Error relocating /var/hello.bin: json_object_to_json_string: symbol not found
Error relocating /var/hello.bin: MHD_stop_daemon: symbol not found
Error relocating /var/hello.bin: json_object_new_object: symbol not found
Error relocating /var/hello.bin: json_object_array_add: symbol not found
Error relocating /var/hello.bin: json_object_new_int: symbol not found

Why is that and how to fix it?

hello.bb recipe

SUMMARY = "hello"
LICENSE = "CLOSED"

SRCBRANCH = "hello"
SRCREV = "03b9c21ef46973d2a285db785a04620ebaf25db2"

SRC_URI = "git://git@bitbucket.org/hello/hello.git;branch=${SRCBRANCH};protocol=ssh"

S = "${WORKDIR}/git"

DEPENDS = "sqlite3 libmicrohttpd json-c"

INSANE_SKIP:${PN} += "ldflags"

do_compile() {
    cd ${S}/src && oe_runmake
}

do_install() {
    install -d ${D}/var/
    install -m 0644 ${S}/src/hello.bin ${D}/var/hello.bin
}

FILES:${PN} = "/var/hello.bin"

Makefile

CC ?= gcc

CFLAGS += -O2
CFLAGS += -I./include
CFLAGS += -I${STAGING_INCDIR}/usr/lib

LDLIBS += -lmicrohttpd -lsqlite3 -ljson-c
LDFLAGS += -L${STAGING_LIBDIR}/usr/lib

cc-headers = \
    hello.h \
    hello_db.h \
    hello_http.h \
    hello_list.h

cc-targets = \
    hello.o \
    hello_db.o \
    hello_http.o

%.o: %.c $(cc-headers)
    $(CC) -c -o $@ $< $(CFLAGS)

all: $(cc-targets)
    $(CC) -o helo.bin $(CFLAGS) $(LDLIBS) $(cc-targets)

clean:
    rm *.o

Answer 1

DEPENDS specifies build time dependencies.

You need to add libmicrohttpd and json-c to RDEPENDS (Runtime dependencies):

RDEPENDS_${PN} += "libmicrohttpd json-c"