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

[Jérémie Galarneau]

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