[lttng-dev] lttng-tools 2.9.0 build failures

[Michael Jeanson]

On 2016-12-04 17:08, Thomas Petazzoni wrote:
> Hello,
> 
> In the Buildroot project, we recently updated to lttng-tools 2.9.0, and
> we're experiencing two build failures:
> 
>  * With a uClibc based toolchain:
> 
> prog.c:24:15: error: 'LM_ID_BASE' undeclared (first use in this function)
>   h1 = dlmopen(LM_ID_BASE, "libfoo.so", RTLD_LAZY);
> 
>    I believe dlmopen() is not implemented in uClibc and musl, so
>    perhaps this should be handled in lttng-tools by making the code
>    conditional.
> 
>    See
>    http://autobuild.buildroot.net/results/d87/d8745ef5c8c7d71f993edf2a8f3f107d2d1b35fc/build-end.log
>    for the full build log.
> 
>  * With a musl based toolchain:
> 
> In file included from health.c:26:0:
> ../../../src/common/defaults.h:370:1: error: unknown type name 'pthread_attr_t'
>  pthread_attr_t *default_pthread_attr(void);
> 
>    See
>    http://autobuild.buildroot.net/results/255/2556b3266b913964bea25c21d014f4b1b25b6808/build-end.log
>    for the full build log.
> 
> Best regards,
> 
> Thomas
> 

I've also encountered these problems on Alpine Linux, I've just
submitted a patch for the pthread include. As for dlmopen, that will
require a bit to more work to make a clean patch. In the mean time, you
can just strip this part of the code before building, that's what I did
for the Alpine package.

Regards,

Michael