On 7/13/20 4:21 AM, Robert Varga wrote:
Hello,
I am new to the Yocto project and need some help in solving a linker
issue when compiling/linking an application using the SDK. It seems,
that the compilation is completed, but the linker could not resolve to
"_rtld_global_ro". Here is the output of the last stage
<snip>
...
/opt/mydistro/1.0.0/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/8.3.0/real-ld:
/opt/mydistro/1.0.0/sysroots/cortexa9t2hf-neon-poky-linux-gnueabi/usr/lib/libc.a(getcontext.o):
in function `getcontext':
/usr/src/debug/glibc/2.29-r0/git/stdlib/../sysdeps/unix/sysv/linux/arm/getcontext.S:101:
undefined reference to `_rtld_global_ro'
/opt/mydistro/1.0.0/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/8.3.0/real-ld:
/opt/mydistro/1.0.0/sysroots/cortexa9t2hf-neon-poky-linux-gnueabi/usr/lib/libc.a(setcontext.o):
in function `__startcontext':
/usr/src/debug/glibc/2.29-r0/git/stdlib/../sysdeps/unix/sysv/linux/arm/setcontext.S:100:
undefined reference to `_rtld_global_ro'
collect2: error: ld returned 1 exit status
makefile:116: recipe for target 'ortable' failed
make: *** [ortable] Error 1
</snip>
What I can see from the output is, that both getcontext.S and
setcontext.S are referencing to "_rtld_global_ro". What I do not
understand is, why the glibc is located in the debug folder? Is this
probably the issue?
it seems static apps with glibc compiled with PIE related. Can you
verfiy if you get same issue with aarch64 or mips ?
I have sourced the SDK using following command:
source
/opt/mydistro/1.0.0/environment-setup-cortexa9t2hf-neon-poky-linux-gnueabi
Here's image bb file (which I have used for building the SDK using this
command (bitbake my-image -c populate_sdk).
require recipes-extended/images/core-image-full-cmdline.bb
IMAGE_INSTALL_append = " \
emmy-w1-driver-sdiosdio \
emmy-w1-systemd \
eth-systemd \
can-systemd \
can-utils \
lighttpd \
dnsmasq \
parted \
swupdate \
swupdate-www \
u-boot-fw-utils \
linux-firmware-imx-sdma-imx6q \
"
TOOLCHAIN_HOST_TASK_append = " nativesdk-perl-modules"
SDKIMAGE_FEATURES_append = " staticdev-pkgs"
Any help on resolving this issue would be greatly appreciated.
Thanks.
--
Rob
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