[dpdk-dev] build issue with out-of-tree builds and multiple mounts

[Simon Kågström]

On 2015-05-04 14:48, Olivier MATZ wrote:
> Hi Simon,
> 
> On 05/04/2015 02:42 PM, Simon Kågström wrote:
>> Hi!
>>
>> I'm trying to do a out-of-tree build of DPDK 2.0.0 (with make -C and
>> O=), but failing with errors such as
>>
>>   In file included from
>> [...]/lib/librte_eal/common/include/rte_eal_memconfig.h:40:0,
>>   [...]
>>   rte_malloc_heap.h:39:26: fatal error: rte_spinlock.h: No such file or
>> directory
>>
>> Looking in the include/ directory in my build directory, I see a lot of
>> invalid symlinks to things like rte_spinlock.h:
>>
>>   lrwxrwxrwx 1 ska users   99 May  4 14:33 rte_spinlock.h ->
>> ../[...]/dpdk/lib/librte_eal/common/include/arch/x86/rte_spinlock.h
> 
> Can you please send the full make command line that produces this
> issue?

  make -C /home/ska/devel/dpdk EXTRA_CFLAGS="-g -O0"
RTE_KERNELDIR=/tmp/ubuntu-14.04/usr/src/linux-headers-3.13.0-51-generic
O=/home/ska/build/dpdk T=x86_64-default-linuxapp-gcc V=1

The config step works fine, but it fails on this step.

  /home/ska

is mounted on NFS, and

  /home/ska/build

is a symlink to

  /lhome/ska/build



It appears to work if I build outside the symlink, i.e.., build with
O=/lhome/ska/build/... instead.

// Simon