[yocto] Trouble with yocto sdk in collaboration with eclipse and cmake

[Hartwig, Guido]

I have manually added the flags from CC (-march=armv7-a -marm -mfpu=neon  -mfloat-abi=hard -mcpu=cortex-a8) to the OECMAKE_C_FLAGS and then it works. I try to find a way, where CMAKE works out of the Box with yocto-plugin. I think the plugin is the problem for this issue.

-----Ursprüngliche Nachricht-----
Von: Khem Raj [mailto:raj.khem at gmail.com] 
Gesendet: Freitag, 29. Juli 2016 20:46
An: Hartwig, Guido <g.hartwig at kostal.com>
Cc: yocto at yoctoproject.org
Betreff: Re: [yocto] Trouble with yocto sdk in collaboration with eclipse and cmake


> On Jul 29, 2016, at 1:27 AM, Hartwig, Guido <g.hartwig at kostal.com> wrote:
> 
> Hi,
> I have some trouble with the yocto sdk in collaboration with eclipse and yocto CMake project. I have install all necessary eclipse plugins and linked my sdk with the yocto-plugin as described in the manual. When I try to build the "Hello World" yocto cmake project it fails with following message:
> 
> ..
> CMake Error at 
> /usr/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:61 (message): The C compiler "/opt/puck/1.0.0/sysroots/x86_64-pucksdk-linux/usr/bin/arm-kostal-linux-gnueabi/arm-kostal-linux-gnueabi-gcc"
>  is not able to compile a simple test program ...
> 
> This error occurs because the compiler is called with the wrong flags.
> The SDK environment-setup script export the following environment 
> variables export CC="arm-kostal-linux-gnueabi-gcc  -march=armv7-a -marm -mfpu=neon  -mfloat-abi=hard -mcpu=cortex-a8 --sysroot=$SDKTARGETSYSROOT"
> export CFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/home/hartwig02/Workspace/build-puck/build/tmp/work/x86_64-nativesdk-pucksdk-linux/meta-environment-scb/1.0-r8=/usr/src/debug/meta-environment-scb/1.0-r8 -fdebug-prefix-map=/home/hartwig02/Workspace/build-puck/build/tmp/sysroots/x86_64-linux= -fdebug-prefix-map=/home/hartwig02/Workspace/build-puck/build/tmp/sysroots/x86_64-nativesdk-pucksdk-linux= "
> 
> The eclipse environment (set by the yocto plugin) shows the following environment:
> CC = arm-kostal-linux-gnueabi-gcc  -march=armv7-a -marm -mfpu=neon  
> -mfloat-abi=hard -mcpu=cortex-a8 
> --sysroot=/opt/puck/1.0.0/sysroots/cortexa8hf-neon-kostal-linux-gnueab
> i CFLAGS =  
> --sysroot=/opt/puck/1.0.0/sysroots/cortexa8hf-neon-kostal-linux-gnueab
> i OECMAKE_C_COMPILER = arm-kostal-linux-gnueabi-gcc
> OECMAKE_C_FLAGS =    --sysroot=/opt/puck/1.0.0/sysroots/cortexa8hf-neon-kostal-linux-gnueabi
> 
> I assume that yocto cmake uses the OECMAKE* variables to build the program.
> The error occurs because the following compiler options (Tunes) are missing "-march=armv7-a -marm -mfpu=neon  -mfloat-abi=hard -mcpu=cortex-a8"
> 
> Now my questions
> 1.	Is it right that the yocto plugin cuts off the tunes from the OECMAKE_C_COMPILER?
> 2.	Is there a reason that this compiler options are not appended to the CFLAGS?

CFLAGS should be passed down to cmake build system. That seems to be the problem you are seeing. Have you tried to append CFLAGS to OECMAKE_C_FLAGS ?

> 
> Thank you for your help
> 
> 
> 
> Mit freundlichen Grüßen / Kind regards
> 
> KOSTAL Industrie Elektrik GmbH
> 
> Dipl.-Ing.
> Guido Hartwig
> IE1 Entwicklung Elektronik
> R & D Electronics
> 
> Lange Eck 11, 58099 Hagen
> Deutschland / Germany
> Telefon: +49 2331 8040 - 688
> Telefax: +49 2331 8040 - 4660
> E-Mail: g.hartwig at kostal.com
> 
> Internet: http://www.kostal.com/industrie
> 
> 
> 
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