Cross compilation - Could not find lua libs

Cross compilation - Could not find lua libs

[Jean-Fabien Arnaud]

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Hello
I would like to compile https://github.com/sbernard31/lualwm2m with a poky toolchain, but it can not find lua library and i do not know why.
Lua 5.1 is installed, and I have no problem to compile with the « default » gcc.

$:~/build_arm$ cmake -DCMAKE_C_COMPILER=/opt/poky/1.6.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc ../lualwm2m/
-- The C compiler identification is GNU 4.8.2
-- Check for working C compiler: /opt/poky/1.6.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc
-- Check for working C compiler: /opt/poky/1.6.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
CMake Error at /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:108 (message):
  Could NOT find Lua51 (missing: LUA_LIBRARIES) (found version "5.1.5")
Call Stack (most recent call first):
  /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:315 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake-2.8/Modules/FindLua51.cmake:76 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:3 (find_package)

$:~/build_arm$ cmake ../lualwm2m/
-- The C compiler identification is GNU 4.8.4
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Found Lua51: /usr/lib/x86_64-linux-gnu/liblua5.1.so;/usr/lib/x86_64-linux-gnu/libm.so (found version "5.1.5")
-- Configuring done
-- Generating done
-- Build files have been written to: /home/jf/build_arm

I hope i am publishing on the good ML, if anybody can tell me what am I doing wrong ?

Thank you
Jean Fabien

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Re: Cross compilation - Could not find lua libs

[Klauer, Daniel]

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Hello,


in my experience it was also necessary to specify things like CMAKE_FIND_ROOT_PATH, otherwise cmake didn't find libraries in the poky SDK sysroot (also see cmake cross-compiling documentation). Here's what I've been using for cross-compiling with a poky SDK installed to /opt/poky/<version>:


source /opt/poky/<version>/environment-setup-*

cmake <srcdir> \
  -DCMAKE_SYSTEM_NAME=Linux \
  -DCMAKE_SYSTEM_VERSION=1 \
  -DCMAKE_FIND_ROOT_PATH=/opt/poky/<version>/sysroots/<target> \
  -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER \
  -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY \
  -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY


Another important detail is that the poky SDK must include all the *-dev packages needed.


Regards,

Daniel

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Re: Cross compilation - Could not find lua libs

[Khem Raj]

On Wed, Jun 8, 2016 at 7:30 AM, Jean-Fabien Arnaud
<jean-fabien.arnaud@src-solution.com> wrote:
> Hello
>
> I would like to compile https://github.com/sbernard31/lualwm2m with a poky
> toolchain, but it can not find lua library and i do not know why.
>
> Lua 5.1 is installed, and I have no problem to compile with the « default »
> gcc.

lua should also be added to your SDK and Lua is in another layer in
meta-openembedded. So add that layer to your project
as well as to one of images and then do -cpopulate_sdk <image> this
should hopefully add needed lua dev libs and headers
to your SDK.

>
>
>
> $:~/build_arm$ cmake
> -DCMAKE_C_COMPILER=/opt/poky/1.6.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc
> ../lualwm2m/
>
> -- The C compiler identification is GNU 4.8.2
>
> -- Check for working C compiler:
> /opt/poky/1.6.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc
>
> -- Check for working C compiler:
> /opt/poky/1.6.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc
> -- works
>
> -- Detecting C compiler ABI info
>
> -- Detecting C compiler ABI info - done
>
> CMake Error at
> /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:108
> (message):
>
>   Could NOT find Lua51 (missing: LUA_LIBRARIES) (found version "5.1.5")
>
> Call Stack (most recent call first):
>
>   /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:315
> (_FPHSA_FAILURE_MESSAGE)
>
>   /usr/share/cmake-2.8/Modules/FindLua51.cmake:76
> (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
>
>   CMakeLists.txt:3 (find_package)
>
>
>
> $:~/build_arm$ cmake ../lualwm2m/
>
> -- The C compiler identification is GNU 4.8.4
>
> -- Check for working C compiler: /usr/bin/cc
>
> -- Check for working C compiler: /usr/bin/cc -- works
>
> -- Detecting C compiler ABI info
>
> -- Detecting C compiler ABI info - done
>
> -- Found Lua51:
> /usr/lib/x86_64-linux-gnu/liblua5.1.so;/usr/lib/x86_64-linux-gnu/libm.so
> (found version "5.1.5")
>
> -- Configuring done
>
> -- Generating done
>
> -- Build files have been written to: /home/jf/build_arm
>
>
>
> I hope i am publishing on the good ML, if anybody can tell me what am I
> doing wrong ?
>
>
>
> Thank you
>
> Jean Fabien
>
>
> --
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>