[lttng-dev] lttng-ust cross compile broken for demo-tracef

Jan Glauber jan.glauber at gmail.com
Tue Apr 8 04:50:22 EDT 2014 

On Mon, Apr 07, 2014 at 12:32:18PM -0400, Jérémie Galarneau wrote:
> On Mon, Apr 7, 2014 at 10:29 AM, Jan Glauber <jan.glauber at gmail.com> wrote:
> > Yes:
> > $ which arm-linux-gnueabihf-gcc
> > /usr/bin/arm-linux-gnueabihf-gcc
> >
> > IIRC the examples have not been build by default in the past, right?
> 
> They have been for around a year. I think I found the issue:
> lttng-gen-tp doesn't expect the CC variable to contain command line
> arguments.

I've been on version 2.2.
 
> Can you apply and test the following diff?

Yes, that fixes the issue!

Many thanks,
Jan

> diff --git a/tools/lttng-gen-tp b/tools/lttng-gen-tp
> index a3a01f2..b62cd99 100755
> --- a/tools/lttng-gen-tp
> +++ b/tools/lttng-gen-tp
> @@ -94,7 +94,7 @@ class ObjFile:
>          if 'CC' in os.environ:
>              cc = os.environ['CC']
>              try:
> -                subprocess.call(cc,
> +                subprocess.call(cc.split(),
>                                  stdout=subprocess.PIPE,
>                                  stderr=subprocess.PIPE)
>              except OSError as msg:
> 
> 
> Thanks,
> Jérémie
> 
> >
> >
> > 2014-04-07 16:20 GMT+02:00 Jérémie Galarneau
> > <jeremie.galarneau at efficios.com>:
> >
> >> On Mon, Apr 7, 2014 at 10:10 AM, Jan Glauber <jan.glauber at gmail.com>
> >> wrote:
> >> > Sure, it looks like there is a problem with python in lttng-get-tp:
> >> >
> >> > | make[4]: Entering directory
> >> >
> >> > `/home/jang/temp/p4/JGlauber_hal_share/poky/build/tmp/work/armv7ahf-vfp-neon-elina-linux-gnueabi/lttng-ust-2.4-r0/git/doc/examples/gen-tp'
> >> > | ../../../tools/lttng-gen-tp -o sample_tracepoint.c
> >> > sample_tracepoint.tp
> >> > |
> >> >
> >> > CPPFLAGS="-isystem/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/include
> >> >
> >> > -isystem/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/include
> >> > -I../../../include/ -I../../../include/" \
> >> > |       CFLAGS="-Wall
> >> >
> >> > -isystem/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/include
> >> > -O2 -pipe -g -feliminate-unused-debug-types -fno-omit-frame-pointer
> >> > -Wall
> >> >
> >> > -isystem/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/include
> >> > -O2 -pipe -g -feliminate-unused-debug-types -fno-omit-frame-pointer" \
> >> > |
> >> >
> >> > LDFLAGS="-L/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/lib
> >> >
> >> > -Wl,-rpath-link,/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/lib
> >> > -Wl,-O1 -Wl,--hash-style=gnu
> >> >
> >> > -L/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/lib
> >> >
> >> > -Wl,-rpath-link,/home/jang/temp/p4/JGlauber_hal_share/poky/../toolchain//arm-linux-gnueabihf/lib
> >> > -Wl,-O1 -Wl,--hash-style=gnu -L../../../liblttng-ust/.libs/
> >> >
> >> > -Wl,-rpath="/home/jang/temp/p4/JGlauber_hal_share/poky/build/tmp/work/armv7ahf-vfp-neon-elina-linux-gnueabi/lttng-ust-2.4-r0/git/doc/examples/../../liblttng-ust/.libs/""
> >> > \
> >> > |       CC="arm-linux-gnueabihf-gcc  -march=armv7-a
> >> > -mthumb-interwork
> >> > -mfloat-abi=hard -mfpu=neon -mtune=cortex-a15
> >> >
> >> > --sysroot=/home/jang/temp/p4/JGlauber_hal_share/poky/build/tmp/sysroots/omap5"
> >> > \
> >> > |       ../../../tools/lttng-gen-tp -o sample_tracepoint.o
> >> > sample_tracepoint.tp
> >> > | Invalid CC environment variable
> >>
> >> Okay, this means that subprocess.call(cc, ...) (lttng-gen-tp:108)
> >> fails while trying to run your CC variable. Is arm-linux-gnueabihf-gcc
> >> in your PATH?
> >>
> >> Jérémie
> >>
> >> > | Traceback (most recent call last):
> >> > |   File "../../../tools/lttng-gen-tp", line 315, in <module>
> >> > |     sys.exit(main())
> >> > |   File "../../../tools/lttng-gen-tp", line 309, in main
> >> > |     dotobj.write()
> >> > |   File "../../../tools/lttng-gen-tp", line 132, in write
> >> > |     raise RuntimeError("No C Compiler detected")
> >> > | RuntimeError: No C Compiler detected
> >> > | make[4]: *** [sample_tracepoint.o] Error 1
> >> > | rm sample_tracepoint.c
> >> > | make[4]: Leaving directory
> >> >
> >> > `/home/jang/temp/p4/JGlauber_hal_share/poky/build/tmp/work/armv7ahf-vfp-neon-elina-linux-gnueabi/lttng-ust-2.4-r0/git/doc/examples/gen-tp'
> >> > | make[3]: *** [all-local] Error 1
> >> >
> >> > --Jan
> >> >
> >> >
> >> > 2014-04-07 15:57 GMT+02:00 Jérémie Galarneau
> >> > <jeremie.galarneau at efficios.com>:
> >> >
> >> >> Hi Jan,
> >> >>
> >> >> Can you post the errors you get if you set the "CC=gcc" line in
> >> >> demo-tracef/Makefile by
> >> >>
> >> >> ifdef AM_CC
> >> >>     CC = $(AM_CC)
> >> >> endif
> >> >>
> >> >> Regards,
> >> >> Jérémie
> >> >>
> >> >> On Mon, Apr 7, 2014 at 7:43 AM, Jan Glauber <jan.glauber at gmail.com>
> >> >> wrote:
> >> >> > Hi list,
> >> >> >
> >> >> > I get a compile error with current git head of lttng-ust if I
> >> >> > cross-compile (bitbake):
> >> >> >
> >> >> > | make[4]: Entering directory
> >> >> >
> >> >> > `/home/jang/temp/p4/JGlauber_hal_share/poky/build/tmp/work/armv7ahf-vfp-neon-elina-linux-gnueabi/lttng-ust-2.4-r0/git/doc/examples/demo-tracef'
> >> >> > | arm-linux-gnueabihf-gcc  -march=armv7-a     -mthumb-interwork
> >> >> > -mfloat-abi=hard -mfpu=neon -mtune=cortex-a15
> >> >> >
> >> >> > --sysroot=/home/jang/temp/p4/JGlauber_hal_share/poky/build/tmp/sysroots/omap5
> >> >> > -L/home/jang/te
> >> >> > |               -o demo-tracef demo-tracef.o -ldl -llttng-ust
> >> >> > | demo-tracef.o: file not recognized: File format not recognized
> >> >> > | collect2: error: ld returned 1 exit status
> >> >> > | make[4]: *** [demo-tracef] Error 1
> >> >> >
> >> >> > Looks like the demo-tracef Makefile sets CC hard to gcc. But if I fix
> >> >> > this I get more
> >> >> > errors which I don't undertand. Am I the only one running into this?
> >> >> >
> >> >> > thx, Jan
> >> >> > ---
> >> >> > Harman Becker Automotive GmbH
> >> >> > System Profiling & Optimizing Team
> >> >> >
> >> >> > _______________________________________________
> >> >> > lttng-dev mailing list
> >> >> > lttng-dev at lists.lttng.org
> >> >> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> >> >>
> >> >>
> >> >>
> >> >> --
> >> >> Jérémie Galarneau
> >> >> EfficiOS Inc.
> >> >> http://www.efficios.com
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Jérémie Galarneau
> >> EfficiOS Inc.
> >> http://www.efficios.com
> >
> >
> 
> 
> 
> -- 
> Jérémie Galarneau
> EfficiOS Inc.
> http://www.efficios.com

More information about the lttng-dev mailing list