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 <sujayr...@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 <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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