[Buildroot] warp7_defconfig build error

Arnout Vandecappelle arnout at mind.be
Fri Nov 4 23:20:31 UTC 2016

On 04-11-16 20:52, Fabio Estevam wrote:
> Hi,
> Getting the following build error on a warp7_defconfig build with
> latest mainline:
>>>>   Copying overlay board/warp7/rootfs_overlay
>>>>   Generating root filesystem image rootfs.ext2
> PATH="/home/fabio/buildroot/output/host/bin:/home/fabio/buildroot/output/host/sbin:/home/fabio/buildroot/output/host/usr/bin:/home/fabio/buildroot/output/host/usr/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin"
> /home/fabio/buildroot/output/host/usr/bin/pseudo --
> /home/fabio/buildroot/output/build/_fakeroot.fs
> Warning: PSEUDO_PREFIX unset, defaulting to
> /home/fabio/buildroot/output/host/usr.
> rootdir=/home/fabio/buildroot/output/target
> table='/home/fabio/buildroot/output/build/_device_table.txt'
> makedevs: line 23: Couldnt create node
> /home/fabio/buildroot/output/target/dev/console: File exists
> fs/ext2/ext2.mk:46: recipe for target
> '/home/fabio/buildroot/output/images/rootfs.ext2' failed
> make[1]: *** [/home/fabio/buildroot/output/images/rootfs.ext2] Error 1
> Makefile:76: recipe for target '_all' failed
> make: *** [_all] Error 2
> Does anyone have any ideas on how to fix this error?

 I only get this error when makedevs is run for the second time, i.e. when
building the tarball, not the ext2. But perhaps you took this log by re-running
the build?

 Anyway, the problem is pretty clear: mknod() errors out if the target file
already exists. So the surprising thing really is that it used to work under
fakeroot... I guess fakeroot just implemented its mknod()-wrapper incorrectly to
*not* give an error in that case.

 I guess the solution is to update makedevs to remove any pre-existing file
before creating it.


> Thanks
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Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
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