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Re: Unmet dependencies problem in CrossToolchains

On 03/30/2015 05:10 PM, John Morris wrote:

On 03/09/2015 10:52 PM, Wookey wrote:
+++ John Morris [2015-03-06 02:53 -0600]:
On 01/16/2015 01:18 PM, Wookey wrote:

Setting up the repo as described and running `apt-get install
crossbuild-essential-armhf` fails with the error message:

     The following packages have unmet dependencies:
      crossbuild-essential-armhf : Depends: g++-arm-linux-gnueabihf
       (>= 4.9.1-1) but it is not going to be installed
Everything has just changed for jessie anyway as 4.9.2-10 gcc migrated
to testing so 4.9.1-19 is now obsolete. I've migrated some packages to
the jessie repo and am building some more. Hopefully everything will
be back in working order in a couple of days.

Verified that `apt-get install crossbuild-essential-armhf` now succeeds.
  Thank you!

A couple more issues:

- A package (Xenomai) requires `build-essential`, but nothing installed
by `crossbuild-essential-armhf` provides `build-essential:armhf`.  That
causes `mk-build-deps -a armhf` to fail.  How is this normally addressed
in a Debian package cross-compile scenario?

I'm going to try setting up Wookey's cross-build daemon or use sbuild directly, so never mind. (I remember finding instances where `mk-build-deps` appeared to do the wrong thing even while the `dpkg` tools did the right thing, which has me suspicious of that script anyway.)

- Another project (Machinekit) I updated for cross-building will want
`pkg-config`.  Ubuntu supplies a special cross-build-aware version,
`pkg-config-arm-linux-gnueabihf`.  I'll pick it up, since I don't see it
in the Emdebian distribution.  Is that package something on the Emdebian
maintainers' radar?

Answering my own prematurely-asked question: The `pkg-config` package contains the `/usr/share/pkg-config-crosswrapper` script, which simply adds `PKG_CONFIG_PATH=/usr/lib/${triplet}/pkgconfig:/usr/${triplet}/lib/pkgconfig` to the environment.

I maintain a Machinekit + dependency multi-arch/multi-distro package
distribution with a stack of packages including RT kernels, so I have an
idea how much work goes into the Emdebian distribution.  Thank you!

Except for this paragraph, my previous email can be ignored.  ;)


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