Building RTEMS hello world image using CMake

[Sujay Raj]

Note: the RTEMS_TOOLS and BSP_DIR variables in the above mail point to the
toolchain directory and BSP directory respectively and need to be passed to
cmake while calling it using the ( -D ) flag.

On Sun, Mar 13, 2016 at 5:22 PM, Sujay Raj <sujayraaj at gmail.com> wrote:

> cmake works fine if the variables are over-ridden. And things aren't that
> difficult while using pc386 bsp.
> But if we are dealing with arm or other archs, the best way ( and the
> recommended one ) to do during cross-compiling would be to create a
> toolchain file, forcing cmake to use the cross compiling toolchain, and not
> run its tests that it usually runs for x86/x86-64 systems.
>
> documentation on how to do it is available here:
>
> https://cmake.org/Wiki/CMake_Cross_Compiling
>
> an example for the cmake toolchain file for building an application for
> rtems:
>
> https://github.com/sujayraaj/monkey/blob/1.6/cmake/rtems/RTEMS.tc
>
> and adding :
>
>
> set(ARCH arm )
> set(BSP xilinx_zynq_a9_qemu )
> set(BSP_CFLAGS "-march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard
> -mtune=cortex-a9" )
>
> set(RTEMS_CFLAGS "${BSP_CFLAGS} -O0 -g -qrtems
> -B${BSP_DIR}/${ARCH}-rtems4.11/lib" )
>
> set(RTEMS_CFLAGS "${RTEMS_CFLAGS}
> -B${BSP_DIR}/${ARCH}-rtems4.11/xilinx_zynq_a9_qemu/lib/" )
>
> set(RTEMS_CFLAGS "${RTEMS_CFLAGS} --specs bsp_specs")
> set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${RTEMS_CFLAGS}")
>
>
> at the top of the CmakeLists.txt file.
>
> ( Somehow I didn't recieve Chris's mail on this thread so what I have said
> might be repetitive )
>
>
> On Sat, Mar 12, 2016 at 8:23 PM, Gedare Bloom <gedare at rtems.org> wrote:
>
>> If this works for you, and you are sufficiently interested, it would
>> be useful to provide CMake example for the examples-v2.git repository
>> for others to benefit.
>>
>> On Sat, Mar 12, 2016 at 9:29 AM, Sambeet Panigrahi
>> <sambeet161616 at gmail.com> wrote:
>> > Thank you Chris.That works perfectly:)
>> >
>> > On Mar 11, 2016 6:32 AM, "Chris Johns" <chrisj at rtems.org> wrote:
>> >>
>> >>  [ Please excuse the delay. It took a while to get
>> >>    something worth posting sorted out. ]
>> >>
>> >> On 04/03/2016 14:46, Sambeet Panigrahi wrote:
>> >>>
>> >>> I wanted to build a hello world image of RTEMS using cmake. Can
>> someone
>> >>> provide me steps for doing so or point me to the right resources ?
>> >>
>> >>
>> >> I attach a couple of files from a friend of mine, Andi, who knows and
>> >> works with cmake. I have not tried them and I do not know if they work.
>> >>
>> >> If you have any questions please feel free to ask.
>> >>
>> >> Chris
>> >
>> >
>> > _______________________________________________
>> > devel mailing list
>> > devel at rtems.org
>> > http://lists.rtems.org/mailman/listinfo/devel
>> _______________________________________________
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>> devel at rtems.org
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>>
>
>
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