> On 14 Jul 2016, at 10:20, Thomas Monjalon <thomas.monjalon at 6wind.com>
> wrote:
>
> 2016-07-13 22:58, Damjan Marion:
>> I have issues with linking application to 16.07-rc2.
>>
>> Looks like reason is constructor function in include file,
>> so our unit test apps are failing to link as they are not linked with dpdk
>> libs.
>> (and they should not be as they are not calling any dpdk function).
>
> I don't understand:
> Why are you linking DPDK if you do not use any DPDK function?
If i simplify it, i have 4 components:
1. libdpdk
2. libXXX
3. app-A
4. app-B
libXXX includes some dpdk headers, mainly because of data structures like
rte_mbuf, and some functions are calling
functions form libdpdk.
app-A links against libdpdk and libXXX
app-B links against libXXX only and only uses functions from libXXX which
doesn?t have dpdk dependency
This is working fine in 14.04. In 14.07 rte_rtm_init() implants himself into
libXXX as it is defined
in header file, and that causes linking to fail due to missing
rte_cpu_get_flag_enabled().
>
>> static inline void __attribute__((constructor))
>> rte_rtm_init(void)
>> {
>> rtm_supported = rte_cpu_get_flag_enabled(RTE_CPUFLAG_RTM);
>> }
>>
>> linking fails with:
>> dpdk/include/rte_spinlock.h:103: undefined reference to
>> `rte_cpu_get_flag_enabled?
>>
>> Is there any chance that this one is moved to some .c file, so it is loaded
>> only when it is really needed?
>
> Yes it could be moved to lib/librte_eal/common/arch/x86/.
Any chance to get this in 16.07 ?
Thanks!
