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 <ged...@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 > <sambeet161...@gmail.com> wrote: > > Thank you Chris.That works perfectly:) > > > > On Mar 11, 2016 6:32 AM, "Chris Johns" <chr...@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@rtems.org > > http://lists.rtems.org/mailman/listinfo/devel > _______________________________________________ > devel mailing list > devel@rtems.org > http://lists.rtems.org/mailman/listinfo/devel >
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