[yocto] go-runtime ABI issues when executing a Go lang project compiled with yocto

[Iván Castell]

Hi forum.

I'm having ABI issues trying to compile a Go lang related project.

In order to resolve my project dependencies, I use dep tool. To be able to
dep, I had to modify meta/recipes-devtools/go/go-dep_0.3.0.bb, adding this
at the end:

    BBCLASSEXTEND = "native nativesdk"

After that, this .bb builds my project fine:

    GO_IMPORT = "bitbucket.org/project"
    SRC_URI = "git://${GO_IMPORT}/protocol=http;user=${GIT_USER}:${GIT_PAS
S};destsuffix=${PN}-${PV}/src/${GO_IMPORT}"
    SRCREV = "90323909..."

    inherit go

    CGO_ENABLED = "1"
    GO_DYNLINK = ""

    do_compile_prepend() {
        rm -f ${WORKDIR}/build/src/${GO_IMPORT}/Gopkg.toml
        rm -f ${WORKDIR}/build/src/${GO_IMPORT}/Gopkg.lock
        cd ${WORKDIR}/build/src/${GO_IMPORT}
        dep init
        dep ensure
    }

    deltask do_compile_ptest_base
    deltask do_compile_ptest

    DEPENDS = "go-dep-native mercurial-native"

    INHIBIT_PACKAGE_DEBUG_SPLIT = "1"
    INHIBIT_PACKAGE_STRIP = "1"

    FILES_${PN}_append = " /opt/bin"

    RDEPENDS_${PN}-staticdev += "bash"
    RDEPENDS_${PN}-dev += "bash"

However, when executing the generated binary, it has ABI issues:

    $ /usr/bin/mybin
    abi mismatch detected between the executable and libstd.so
    fatal error: abi mismatch
    runtime: panic before malloc heap initialized

Here I provide more information related with the compiled binary:

    $ ldd /usr/bin/mybin
        linux-vdso.so.1 (0x00007ffe321d9000)
        libstd.so => /usr/lib/go/pkg/linux_amd64_dynlink/libstd.so
(0x00007f95463d7000)
        libc.so.6 => /lib/libc.so.6 (0x0000003436200000)
        libdl.so.2 => /lib/libdl.so.2 (0x0000003436a00000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x0000003436600000)
        /lib/ld-linux-x86-64.so.2 (0x0000003435e00000)

    $ file /usr/bin/mybin
    /usr/bin/mybin: ELF 64-bit LSB executable, x86-64, version 1 (SYSV),
dynamically linked, interpreter /lib/ld-linux-x86-64.so.2, for GNU/Linux
3.2.0, BuildID[sha1]=0103acf63634df77e600eb114bf59977462ca51d, with
debug_info, not stripped

    $ file /usr/lib/go/pkg/linux_amd64_dynlink/libstd.so
    /usr/lib/go/pkg/linux_amd64_dynlink/libstd.so: ELF 64-bit LSB shared
object, x86-64, version 1 (SYSV), dynamically linked,
BuildID[sha1]=2d2f135b2f9eab19a7ceff1923820bf635e10eb1, with debug_info,
not stripped

As the missage error says, the problem seems related with the generation of
the libstd.so dynamic library. Dynamic generation is controlled by
GO_DYNLINK environ variable (see meta/recipes-devtools/go/go-runtime.inc).
I could fix my issue with this nasty hack:

    # if [ -n "${GO_DYNLINK}" ]; then
    #    cp ${B}/go_bootstrap ${B}/pkg/tool/${BUILD_GOTUPLE}
    #    GO_FLAGS="-buildmode=shared" GO_LDFLAGS="-extldflags
\"${LDFLAGS}\"" ./make.bash --target-only
    # fi

After commenting that condicion and rebuilding all my go yocto-related
environment, the binary is compiled as static and it works as expected.

This is not a nice way to solve this issue.

What should be the proper way to manage this issue?

Thank you in advance! :-)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20180216/786c8d99/attachment.html>