Re: [PATCH] cmake.bbclass: set ar/ld/nm/objcopy/objdump/ranlib/strip native paths

[Jonathan Liu <net147@gmail.com>]

On 17/07/2013 7:49 PM, Jonathan Liu wrote:
> On 17/07/2013 7:13 PM, Stefan Herbrechtsmeier wrote:
>> Am 17.07.2013 10:40, schrieb Jonathan Liu:
>>> The CMAKE_{AR,LINKER,NM,OBJCOPY,OBJDUMP,RANLIB,STRIP} cmake variables
>>> are currently set to values like CMAKE_LINKER-NOTFOUND for native
>>> recipes because the host paths are not searched. This is because the
>>> CMAKE_FIND_ROOT_PATH_MODE_PROGRAM cmake variable is set to ONLY.
>>>
>>> To resolve this, explicitly set the variables using FIND_PROGRAM and
>>> pass the CMAKE_FIND_ROOT_PATH_BOTH option so the host paths are also
>>> searched.
>> Can you please debug the issue. Regarding my current check the 
>> variables are set in CMakeFindBinUtils.cmake and this is included by 
>> CMakeDetermineCCompiler.cmake. The later set 
>> _CMAKE_TOOLCHAIN_LOCATION based on the CMAKE_C_COMPILER variable and 
>> this is used as search location for the find_program calls. Can you 
>> check the value of _CMAKE_TOOLCHAIN_LOCATION?
>>
> Within the context of the CMakeLists.txt file:
> CMAKE_C_COMPILER is /usr/bin/gcc.
> _CMAKE_TOOLCHAIN_LOCATION is not set to anything.
>
> If I add message(test) to 
> build/tmp/sysroots/x86_64-linux/usr/share/cmake-2.8/Modules/CMakeDetermineCCompiler.cmake, 
> it doesn't get printed out when running cmake on CMakeLists.txt (cmake 
> is build/tmp/sysroots/x86_64-linux/usr/bin/cmake).
>
> Regards,
> Jonathan
For:
find_program(CMAKE_AR NAMES 
${_CMAKE_TOOLCHAIN_PREFIX}ar${_CMAKE_TOOLCHAIN_SUFFIX} HINTS 
${_CMAKE_TOOLCHAIN_LOCATION})

It seems the ${_CMAKE_TOOLCHAIN_LOCATION} hint is not used when 
CMAKE_FIND_ROOT_PATH_MODE_PROGRAM is set to ONLY.

Test case (CMakeLists.txt):
cmake_minimum_required(VERSION 2.8)
set(CMAKE_FIND_ROOT_PATH /var/empty)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
FIND_PROGRAM(LD NAMES ld HINTS /usr/bin)
message(${LD})

Running cmake displays:
LD-NOTFOUND

If "set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)" is commented out, it 
displays /usr/bin/ld.

Regards,
Jonathan