Hi, When I followed this tutorial: https://sel4.systems/Info/CAmkES/GettingStarted.pml The error is: /home/talos/camkes-project/build/arm/imx31/simple/src/echo/generated/camkes.o: In function `post_main': /home/talos/camkes-project/build/arm/imx31/simple/src/echo/generated/camkes.c:601: undefined reference to `component_control_main' collect2: error: ld returned 1 exit status /home/talos/camkes-project/build/arm/imx31/simple/camkes-gen.mk:630: recipe for target 'echo.instance.bin' failed make[1]: *** [echo.instance.bin] Error 1 tools/common/project.mk:333: recipe for target 'simple' failed make: *** [simple] Error 2 But when I followed this tutorial: https://docs.sel4.systems/CAmkES/ the error is: [230/232] Building C object elfloader-tool/CMakeFiles/elfloader.dir/src/string.c.obj FAILED: /usr/bin/arm-none-eabi-gcc --sysroot=/home/talos/camkes-project/build -DHAVE_AUTOCONF -I../tools/seL4/elfloader-tool/include -I../tools/seL4/elfloader-tool/include/plat/imx6 -I../tools/seL4/elfloader-tool/include/arch-arm -I../tools/seL4/elfloader-tool/include/arch-arm/32 -I../tools/seL4/elfloader-tool/include/arch-arm/armv/armv7-a -I../tools/seL4/elfloader-tool/include/arch-arm/armv/armv7-a/32 -Iautoconf -Ikernel/gen_config -Ielfloader-tool/gen_config -Ilibsel4/gen_config -Iprojects/camkes/gen_config -Iprojects/capdl/capdl-loader-app/gen_config -Iprojects/rumprun/gen_config -Iprojects/seL4_libs/libsel4vka/gen_config -Iprojects/seL4_libs/libsel4utils/gen_config -Iprojects/seL4_libs/libsel4platsupport/gen_config -Iprojects/seL4_libs/libsel4serialserver/gen_config -Iprojects/seL4_libs/libsel4debug/gen_config -Iprojects/seL4_libs/libsel4test/gen_config -Iprojects/seL4_libs/libsel4muslcsys/gen_config -Iprojects/seL4_libs/libsel4vmm/gen_config -Iprojects/util_libs/libutils/gen_config -Iprojects/util_libs/libplatsupport/gen_config -Iprojects/util_libs/libethdrivers/gen_config -I../projects/util_libs/libcpio/include -march=armv7-a -marm -D__KERNEL_32__ -g -D_XOPEN_SOURCE=700 -ffreestanding -Wall -Werror -W -Wextra -fno-pic -fno-pie -MD -MT elfloader-tool/CMakeFiles/elfloader.dir/src/string.c.obj -MF elfloader-tool/CMakeFiles/elfloader.dir/src/string.c.obj.d -o elfloader-tool/CMakeFiles/elfloader.dir/src/string.c.obj -c ../tools/seL4/elfloader-tool/src/string.c ../tools/seL4/elfloader-tool/src/string.c:97:29: error: expected ';', ',' or ')' before 'dest' void *memcpy(void *restrict dest, const void *restrict src, size_t n) ^ ninja: build stopped: subcommand failed. I used Ubuntu 16.04 x86_64 Thanks