[Mono-dev] Compiling mono on embedded platform fails ( structure has no member named uc_regs)

[Andreas Färber]

Hello Johannes,

Am 08.08.2007 um 17:44 schrieb Johannes Paschold:

> i have a problem compiling mono on my embedded linux

> I compiled and installed bison, pkg-config and glib 2.4.8 and  
> configured mono successfully.
> When running make, compilation fails with the below error message:
>
>
> exceptions-ppc.c:486: warning: unused variable `p'
> exceptions-ppc.c:506: warning: `offset' might be used uninitialized  
> in this function
> exceptions-ppc.c:590: warning: visibility attribute not supported  
> in this configuration; ignored
> exceptions-ppc.c: In function `mono_jit_walk_stack':
> exceptions-ppc.c:640: warning: visibility attribute not supported  
> in this configuration; ignored
> exceptions-ppc.c: In function `ves_icall_get_frame_info':
> exceptions-ppc.c:711: warning: visibility attribute not supported  
> in this configuration; ignored
> exceptions-ppc.c: In function `mono_arch_handle_exception':
> exceptions-ppc.c:756: structure has no member named `uc_regs'
> exceptions-ppc.c:757: structure has no member named `uc_regs'
> exceptions-ppc.c:758: structure has no member named `uc_regs'
> exceptions-ppc.c:759: structure has no member named `uc_regs'
> exceptions-ppc.c :765: structure has no member named `uc_regs'
> exceptions-ppc.c:766: structure has no member named `uc_regs'
> exceptions-ppc.c:767: structure has no member named `uc_regs'
> exceptions-ppc.c:768: structure has no member named `uc_regs'
> exceptions-ppc.c: In function `mono_arch_ip_from_context':
> exceptions-ppc.c:776: structure has no member named `uc_regs'
> make[4]: *** [exceptions-ppc.lo] Error 1
> make[4]: Leaving directory `/tmp/mono- 1.2.4/mono/mini'
> make[3]: *** [all] Error 2
> make[3]: Leaving directory `/tmp/mono-1.2.4/mono/mini'
> make[2]: *** [all-recursive] Error 1
> make[2]: Leaving directory `/tmp/mono-1.2.4/mono'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/tmp/mono-1.2.4'
> make: *** [all] Error 2
>
> I found only 3 hits with google which gave me no solution for that  
> problem. Does anyone can help me out with that problem? Is it ppc  
> specific?

Maybe your embedded platform is ppc64 based? For Linux/ppc64 the  
signal structs are different when compiling 64-bit (they did work  
unchanged 32-bit on Debian Linux/ppc64). Unfortunately some breaking  
changes were introduced since my latest patch snapshot (the relevant  
code was moved to new functions) and I haven't updated it in Bugzilla  
yet with no-one showing any interest in it.

http://bugzilla.ximian.com/show_bug.cgi?id=81455

However, if you do confirm that you are on ppc64 it will likely not  
work with only the struct changes applied but feel free to contribute  
to my port effort, I'd appreciate that.


> Is it possible to build mono from the sources without having a mono  
> installation? The readme says this should be possible if it's an  
> official release (which 1.2.4 i think is?) and not a snapshot.

Short answer: yes. The source tarball bootstraps itself automatically  
when mcs is not available, and for SVN the README has info on getting  
the latest monolite.

Andreas