problems building the target with cmake in Linux about real-time-cpp HOT 10 CLOSED

Hello Joel,

Ok, thank you.

• Cmake: 3.13.4

• GCC:
  For Stm32 targets: gcc-arm-none-eabi-8-2019-q3-update
  For x86_64-linux host: x86_64-linux-gnu 9.2.1 (20191008)

• OS: I have tested it in Debian 10 and Ubuntu 19.10 ( I switched to Ubuntu thinking that something in my Debian environment was wrong..., but I got the same results)

Please, note that the initial CMake support 66c2670 is also working on my side, I experienced these issues after the commit 488b7fe for clang support. In the initial support, the cache variable TRIPLE is used directly in execute_process, and the toolchain file does not use $APP and ${CMAKE_EXECUTABLE_SUFFIX}...

Best regards,
Gabriel

from real-time-cpp.

Thanks Gabriel. Fix is pending in PR #48

from real-time-cpp.

It seems that the variable GCC_TOOLCHAIN_PREFIX is not right set in some places. E.g, by execute_process, should it not be used as ENV variable?

Thank you Gabriel. I will investigate this.

Kind regards, Chris

from real-time-cpp.

Hi @gdobato . Please follow this pattern, and let us know how it works.

Linux Native / Host Build
real-time-cpp$ mkdir build_linux_host && cd build_linux_host
real-time-cpp$ cmake ../ref_app -DTRIPLE=x86_64-linux-gnu -DTARGET=host -DCMAKE_TOOLCHAIN_FILE=../ref_app/cmake/gcc-toolchain.cmake
real-time-cpp$ make -j7

Also the toolchain bin directory should be in your path.

from real-time-cpp.

Hello @ckormanyos , hello @jwinarske,
Thanks for the answer.

Using the given pattern I get the same errors....
I investigated a little and I think I found the issue. There are 2 main problems:

1 )In the toolchain file, in execute_process, there is an additional "-" after the variable ${GCC_TOOLCHAIN_PREFIX} (which is already set in set(GCC_TOOLCHAIN_PREFIX ${TRIPLE}-) and consequently, the "which" command is not able to find the path, so the BINUTILS_PATH is not set either.

By removing the "-" this issue is solved.

2 )In the same file, the variables ${APP} and ${CMAKE_EXECUTABLE_SUFFIX} are used, but they are set in the specific target script. As a consequence, some variables (POSTBUILD_GEN_SYMBOL_LISTING, POSTBUILD_GEN_HEX, ...) are not right set, and there are errors in the postbuild phase...

As the specific target script cannot be included in gcc-toolchain.cmake since the toolchain file has no access to the cache variable ${TARGET}, this can be fixed by moving all definitions which make use of $APP and ${CMAKE_EXECUTABLE_SUFFIX} from gcc-toolchain.cmake to the root CMakeList.txt, since this one includes the specific target script.

Please, find attached a patch with the modifications. By applying it, I can build and install all output files in a Linux System, but I did not test it in Win, Apple or/and VS environment.

001-Fix-unix-build.txt

Best regards,
Gabriel

from real-time-cpp.

Hi Gabriel,

I'll double check things build tomorrow. What's your environment? OS, toolchain, etc.

I did all the initial CMake work on Ubuntu 18.04 with all of the Toolchains.

Joel

from real-time-cpp.

I investigated a little and I think I found the issue. There are 2 main problems

I'll double check things build tomorrow. What's your environment? OS, toolchain, etc.
I did all the initial CMake work on Ubuntu 18.04 with all of the Toolchains.

Thanks Joel and Gabriel.

from real-time-cpp.

Hello Chris and Joel,
Great thanks .
However the PR #48 only fixes partially the issue. The variable ${CMAKE_EXECUTABLE_SUFFIX} is not defined in gcc-toolchain.cmake, and the post-build is still broken. E.g in the case below should be elf, but it is empty:

_+message (STATUS "Executable Suffix ... ${CMAKE_EXECUTABLE_SUFFIX}")
set(POSTBUILD_GEN_SYMBOL_LISTING ${READELF} --syms ${APP}${CMAKE_EXECUTABLE_SUFFIX} > ${APP}readelf.txt)
set(POSTBUILD_GEN_HEX ${OBJCOPY} -O ihex ${APP}${CMAKE_EXECUTABLE_SUFFIX} ${APP}.hex)

gdobato@unix:~/Workspace/real-time-cpp/build$ cmake ../ref_app -DTRIPLE=arm-none-eabi -DTARGET=stm32f429 -DCMAKE_TOOLCHAIN_FILE=../ref_app/cmake/gcc-toolchain.cmake
-- CMAKE_BUILD_TYPE not set, defaulting to MinSizeRel.
-- Triple ................. arm-none-eabi
-- Triple Arch ............ arm
-- Toolchain Path ......... /home/gdobato/Workspace/MCUPlatform/target/tools/toolchain/LINUX/gcc-arm-none-eabi-8-2019-q3-update/bin
-- Executable Suffix ...  
-- Triple ................. arm-none-eabi
-- Triple Arch ............ arm
-- Toolchain Path ......... /home/gdobato/Workspace/MCUPlatform/target/tools/toolchain/LINUX/gcc-arm-none-eabi-8-2019-q3-update/bin
-- Executable Suffix ...  
-- The CXX compiler identification is GNU 8.3.1
-- The ASM compiler identification is GNU
-- Found assembler: /home/gdobato/Workspace/MCUPlatform/target/tools/toolchain/LINUX/gcc-arm-none-eabi-8-2019-q3-update/bin/arm-none-eabi-gcc
-- Check for working CXX compiler: /home/gdobato/Workspace/MCUPlatform/target/tools/toolchain/LINUX/gcc-arm-none-eabi-8-2019-q3-update/bin/arm-none-eabi-g++
-- Check for working CXX compiler: /home/gdobato/Workspace/MCUPlatform/target/tools/toolchain/LINUX/gcc-arm-none-eabi-8-2019-q3-update/bin/arm-none-eabi-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Generator .............. Unix Makefiles
-- Build Type ............. MinSizeRel
-- Configuring done
-- Generating done
-- Build files have been written to: /home/gdobato/Workspace/real-time-cpp/build
gdobato@unix:~/Workspace/real-time-cpp/build$ make -j
Scanning dependencies of target ref_app
[  2%] Building CXX object CMakeFiles/ref_app.dir/src/app/benchmark/app_benchmark_crc.cpp.obj
[  5%] Building CXX object CMakeFiles/ref_app.dir/src/app/benchmark/app_benchmark.cpp.obj
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[ 56%] Building CXX object CMakeFiles/ref_app.dir/src/os/os_task_control_block.cpp.obj
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[ 78%] Building CXX object CMakeFiles/ref_app.dir/src/util/STD_LIBC/memory.cpp.obj
[ 81%] Building CXX object CMakeFiles/ref_app.dir/src/util/STL/impl/arm/arm_float_limits.cpp.obj
[ 81%] Building CXX object CMakeFiles/ref_app.dir/src/mcal/mcal_gcc_cxx_completion.cpp.obj
[ 83%] Building CXX object CMakeFiles/ref_app.dir/src/util/STL/impl/cmath_impl_gamma.cpp.obj
[ 86%] Building CXX object CMakeFiles/ref_app.dir/src/util/STL/impl/cmath_impl_hyperbolic.cpp.obj
[ 89%] Building CXX object CMakeFiles/ref_app.dir/target/micros/stm32f429/startup/crt0.cpp.obj
[ 91%] Building CXX object CMakeFiles/ref_app.dir/target/micros/stm32f429/startup/crt0_init_ram.cpp.obj
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[ 97%] Building CXX object CMakeFiles/ref_app.dir/target/micros/stm32f429/startup/crt1.cpp.obj
[100%] Linking CXX executable ref_app.elf
Generating Post Build Artifacts
readelf: Error: 'ref_app': No such file
make[2]: *** [CMakeFiles/ref_app.dir/build.make:615: ref_app.elf] Error 1
make[2]: *** Deleting file 'ref_app.elf'
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/ref_app.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

is it building on your side?
Thanks,
Gabriel

from real-time-cpp.

PR #49

I broke this when I refactored the post-build steps, and missed the executable suffix. The change gives the gcc toolchain a default of .elf. If there is ever a need for non-.elf, the post build stuff will need to move into the target include.

from real-time-cpp.

This should now be fixed with PR #49

from real-time-cpp.