On 01/16/2016 04:07 AM, Christopher Larson wrote:

On Fri, Jan 15, 2016 at 2:23 AM, Robert Yang <liezhi.y...@windriver.com
<mailto:liezhi.y...@windriver.com>> wrote:


    I've afraid this patch can't work well, when opkg-utils doesn't provide
    virtual/update-alternatives, then chkconfig would be built and there would
    be dependency loops for example,

    PACKAGECONFIG = "python"
    $ bitbake core-image-minimal

    [snip]
    ERROR:
    Dependency loop #1 found:
       Task 747
    (/buildarea/lyang1/poky/meta/recipes-support/libpcre/libpcre_8.38.bb
    <http://libpcre_8.38.bb>, do_packagedata) (dependent Tasks ['libpcre,
    do_package'])
       Task 2067
    (/buildarea/lyang1/poky/meta/recipes-extended/slang/slang_2.2.4.bb
    <http://slang_2.2.4.bb>, do_package) (dependent Tasks ['gcc-runtime,
    do_packagedata', 'pseudo, do_populate_sysroot', 'slang, do_install',
    'libpcre, do_packagedata', 'libtool-cross, do_packagedata', 'glibc,
    do_packagedata', 'rpm, do_populate_sysroot'])
       Task 2064
    (/buildarea/lyang1/poky/meta/recipes-extended/slang/slang_2.2.4.bb
    <http://slang_2.2.4.bb>, do_packagedata) (dependent Tasks ['slang, 
do_package'])
       Task 1876
    (/buildarea/lyang1/poky/meta/recipes-extended/newt/libnewt_0.52.18.bb
    <http://libnewt_0.52.18.bb>, do_package) (dependent Tasks ['slang,
    do_packagedata', 'gcc-runtime, do_packagedata', 'pseudo,
    do_populate_sysroot', 'libnewt, do_install', 'libtool-cross,
    do_packagedata', 'glibc, do_packagedata', 'popt, do_packagedata', 'rpm,
    do_populate_sysroot'])
       Task 1873
    (/buildarea/lyang1/poky/meta/recipes-extended/newt/libnewt_0.52.18.bb
    <http://libnewt_0.52.18.bb>, do_packagedata) (dependent Tasks ['libnewt,
    do_package'])
       Task 1405
    (/buildarea/lyang1/poky/meta/recipes-extended/chkconfig/chkconfig_1.3.58.bb
    <http://chkconfig_1.3.58.bb>, do_package) (dependent Tasks ['gcc-runtime,
    do_packagedata', 'pseudo, do_populate_sysroot', 'glibc, do_packagedata',
    'libnewt, do_packagedata', 'chkconfig, do_install', 'popt, do_packagedata',
    'gettext, do_packagedata', 'rpm, do_populate_sysroot'])
       Task 1402
    (/buildarea/lyang1/poky/meta/recipes-extended/chkconfig/chkconfig_1.3.58.bb
    <http://chkconfig_1.3.58.bb>, do_packagedata) (dependent Tasks ['chkconfig,
    do_package'])
       Task 853
    (/buildarea/lyang1/poky/meta/recipes-extended/bzip2/bzip2_1.0.6.bb
    <http://bzip2_1.0.6.bb>, do_package) (dependent Tasks ['gcc-runtime,
    do_packagedata', 'bzip2, do_install_ptest_base', 'bzip2, do_install',
    'libtool-cross, do_packagedata', 'glibc, do_packagedata', 'pseudo,
    do_populate_sysroot', 'chkconfig, do_packagedata', 'rpm, 
do_populate_sysroot'])
       Task 850
    (/buildarea/lyang1/poky/meta/recipes-extended/bzip2/bzip2_1.0.6.bb
    <http://bzip2_1.0.6.bb>, do_packagedata) (dependent Tasks ['bzip2, 
do_package'])
       Task 750
    (/buildarea/lyang1/poky/meta/recipes-support/libpcre/libpcre_8.38.bb
    <http://libpcre_8.38.bb>, do_package) (dependent Tasks ['libpcre,
    do_install_ptest_base', 'libpcre, do_install', 'gcc-runtime,
    do_packagedata', 'pseudo, do_populate_sysroot', 'libtool-cross,
    do_packagedata', 'glibc, do_packagedata', 'bzip2, do_packagedata', 'zlib,
    do_packagedata', 'rpm, do_populate_sysroot'])


Afaict it should work for the native case, just not target, if you use the
chkconfig-alternatives-native recipe. In meta-mentor we have that recipe for
target as well, to cover both cases, I'll see about submitting that. We've been
using the chkconfig update-alternatives implementation for a few releases now.

If I understand correctly, maybe we need make PACKAGECONFIG only
be available for opkg-utils-native ?

// Robert

--
Christopher Larson
kergoth at gmail dot com
Founder - BitBake, OpenEmbedded, OpenZaurus
Maintainer - Tslib
Senior Software Engineer, Mentor Graphics
--
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