yajl_s library not found when crosscompiling addon

indri · March 3, 2017 at 12:45 PM

When trying to crosscompile a pvr addon with yajl as dependency I get the following error:

Code

CMake Error at /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:148 (message):
Could NOT find Yajl (missing: YAJL_LIBRARY) (found suitable version
"2.1.0", minimum required is "2.0.0")
Call Stack (most recent call first):
/home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:388 (_FPHSA_FAILURE_MESSAGE)
FindYajl.cmake:46 (find_package_handle_standard_args)
CMakeLists.txt:13 (find_package)




-- Configuring incomplete, errors occurred!

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After some investigation I found that the compiler was looking for the static library based on this line in the cmake file:

Code

find_library(YAJL_LIBRARY NAMES yajl_sPATHS ${PC_YAJL_LIBDIR})

so after doing the following it works:

Code

cp build.LibreELEC-RPi2.arm-9.0-devel/yajl-2.1.0/.armv7ve-libreelec-linux-gnueabi/yajl-2.1.0/lib/libyajl_s.a build.LibreELEC-RPi2.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/lib/

However I would like solve the problem in a more elegant way, and not have to repeat the above each time I build the addon.
How to achieve this?
Any help is greatly appreciated.

**vpeter** · March 3, 2017 at 12:54 PM

I assume it is something with your host system (which is?) because it works for everybody else.

Also parts of log doesn't help much to fix issues.

indri · March 3, 2017 at 1:19 PM

Hi sorry my host system is:

Code

14:15:55 ⌁ [ijr:~/LibreELEC.tv] master(+2/-1,-8)* 1 ± uname -a
Linux archxps 4.9.11-1-ARCH #1 SMP PREEMPT Sun Feb 19 13:45:52 UTC 2017 x86_64 GNU/Linux

here the complete log:

Code

14:15:41 ⌁ [ijr:~/LibreELEC.tv] master(+2/-1,-8)* ± PROJECT=RPi2 ARCH=arm scripts/create_addon pvr.zattoo    
  GET      pvr.zattoo
--2017-03-03 14:15:49--  https://github.com/rbuehlma/pvr.zattoo/archive/zattoo.tar.gz
Loaded CA certificate '/etc/ssl/certs/ca-certificates.crt'
Resolving github.com... 192.30.253.113, 192.30.253.112
Connecting to github.com|192.30.253.113|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://codeload.github.com/rbuehlma/pvr.zattoo/tar.gz/zattoo [following]
--2017-03-03 14:15:50--  https://codeload.github.com/rbuehlma/pvr.zattoo/tar.gz/zattoo
Resolving codeload.github.com... 192.30.253.121, 192.30.253.120
Connecting to codeload.github.com|192.30.253.121|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-gzip]
Saving to: 'sources/pvr.zattoo/pvr.zattoo-zattoo.tar.gz'


sources/pvr.zattoo/pvr.zattoo-zatt     [          <=>                                                    ]   1.68M   779KB/s    in 2.2s    


2017-03-03 14:15:54 (779 KB/s) - 'sources/pvr.zattoo/pvr.zattoo-zattoo.tar.gz' saved [1766769]


  UNPACK   pvr.zattoo
  BUILD    pvr.zattoo (target)
Executing (target): cmake -DCMAKE_TOOLCHAIN_FILE=/home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/etc/cmake-armv7ve-libreelec-linux-gnueabi.conf -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=MinSizeRel /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/pvr.zattoo-zattoo
-- The C compiler identification is GNU 6.2.0
-- The CXX compiler identification is GNU 6.2.0
-- Check for working C compiler: /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc
-- Check for working C compiler: /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-g++
-- Check for working CXX compiler: /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Checking to see if CXX compiler accepts flag -flto
-- Checking to see if CXX compiler accepts flag -flto - yes
CMake Error at /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:148 (message):
  Could NOT find Yajl (missing: YAJL_LIBRARY) (found suitable version
  "2.1.0", minimum required is "2.0.0")
Call Stack (most recent call first):
  /home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/toolchain/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:388 (_FPHSA_FAILURE_MESSAGE)
  FindYajl.cmake:46 (find_package_handle_standard_args)
  CMakeLists.txt:13 (find_package)




-- Configuring incomplete, errors occurred!
See also "/home/ijr/LibreELEC.tv/build.LibreELEC-RPi2.arm-9.0-devel/pvr.zattoo-zattoo/.armv7ve-libreelec-linux-gnueabi/CMakeFiles/CMakeOutput.log".

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**vpeter** · March 3, 2017 at 1:29 PM

In pvr.zattoo/package.mk file add this function which will change library name from libyajl_s.a to libyajl.a

Code

post_unpack() {
  sed -i 's|YAJL_LIBRARY NAMES yajl_s|YAJL_LIBRARY NAMES yajl|' $PKG_BUILD/FindYajl.cmake
}

indri · March 3, 2017 at 1:42 PM

Sure, but this way I won't pick up the static library.
What I want is to use yajl_s, (not yajl) in order to prevent a loop.
Unfortunately yajl_s is not present in the toolchain path, only yajl is there.

**vpeter** · March 3, 2017 at 1:46 PM

What? I just tried this and addon was build successfully.

From what I see only static library is available in toolchain with name libyajl.a. It is renamed from original name libyajl_s.a here. If you still want original name then copy file in packages/devel/yajl/package.mk.

indri · March 3, 2017 at 1:54 PM

ahha, ok got it!

btw, I had already built the addon successfuly by manually changing "yajl_s" to "yajl" in FindYajl.cmake.
Still I wanted to pick yajl_s and not yajl, because I didn't know it was the same.
But thanks to you now I know!

So, thanks a lot vpeter, you helped me as always!