Dear Joel Sherrill, Sebastian Huber, Pavel Pisa, and enthusiastic RTEMS community,
I am working on Texas board TMS570LC4357 in RTEMS version 4.11. I have managed to make the board support package and my sample application worked perfectly on board. Currently, I have started working on an application project which includes *RTEMS Makefile as a child Makefile* in my project. I use Eclipse IDE. I was able to link RTEMS libraries and sources required for the application into my project. After this, I came across an error which is quite confusing for me. *“**/opt/rtems/4.11/bin/arm-rtems4.11-ld: **rpc**.o: compiled for a big-endian system and target is little-endian**”* which is a strange error because the target is definitely big-endian(TMS570). rpc is a source file used for my application. Note that *I am using the RTEMS toolset to compile my project** and build binaries for the application.* My project does contain many other source files which should be compiled as per big-endian configuration. The CFLAGS script I used inside the Makefile for target configuration is as follows: -march=armv7-r -mthumb -mbig-endian -D__ARMEB__ -D__VFP_NOFP__ -mfpu=vfpv3-d16 -mfloat-abi=hard This configuration is for ARM Cortex-R5F processor, floating-point disabled, and big-endian target. TMS570 series are big-endian variants and hence I have configured it in such a way. (Texas Instruments TMS570LC4357 ) I have configured the RTEMS toolchain as per the official RTEMS documentation. I build the TMS570 BSP with the same CFLAGS script for a sample RTEMS application as mentioned above and it worked like a charm. (Here I used *RTEMS Makefile as the parent makefile*) While going through RTEMS mailing lists, I could not find adequate information on this issue. So my questions are: 1. What is the reason for above-described error “*compiled for a big endian system and target is little endian*” ? Is it because the RTEMS GCC by default doesn’t support big-endian? 1. If so, how to make the RTEMS GCC compiler to support big-endian targets? Should I re-build RTEMS toolchain with big-endian supported GCC? I have found a thread ( *https://lists.rtems.org/pipermail/devel/2014-June/007232.html* <https://lists.rtems.org/pipermail/devel/2014-June/007232.html> ) from Pavel Pisa regarding this. Can I use the experimental GCC found at *https://rtime.felk.cvut.cz/debian/pool/main/g/gcc-4.9.3/* <https://rtime.felk.cvut.cz/debian/pool/main/g/gcc-4.9.3/> for my project or should I configure GCC by myself? 1. Is there any other RTEMS toolchain components need to be configured (for example *binutils* )? I really need some help to make any further progress. Thank you for your time and consideration. Best regards, Aby Tom
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