[rbmj]

Originally Posted by Azrathud

This is awesome, and I hope I'll be programming on Linux come next season.

I'm trying to set up this toolchain on a 64-bit install of Archlinux, and I'm getting some errors after

• Running the build script for downloading and patching gcc for vxworks
• Editing the toolchain(changing gccdist to true, setting deploy ip)
• Creating a CMakeLists.txt file based off your example
• Running cmake

Maybe this is something of note: while running

cmake /home/azrathud/vxworks-c++-toolchain/project -DCMAKE_TOOLCHAIN_FILE=/home/
azrathud/vxworks-c++-toolchain/cmake_vxworks/vxworks_toolchain.cmake

Cmake outputs that CMAKE_TOOLCHAIN_FILE is not used

The internet seems to think that this is a harmless bug output by some versions of cmake that can be fixed by setting CMAKE_TOOLCHAIN_FILE in the file itself.

I'm trying to compile last season's code which is in the src directory specified in the CMakeLists.txt

From the errors, I think gcc cannot find the header files in /usr/local/powerpc-wrs-vxworks/sys-include

In file included from /home/azrathud/vxworks-c++-toolchain/project/wpilib/ErrorBase.h:12:0,
                 from /home/azrathud/vxworks-c++-toolchain/project/wpilib/Commands/Command.h:10,
                 from /home/azrathud/vxworks-c++-toolchain/project/src/CommandBase.h:4,
                 from /home/azrathud/vxworks-c++-toolchain/project/src/CommandBase.cpp:1:
/home/azrathud/vxworks-c++-toolchain/project/wpilib/Error.h:13:21: fatal error: vxWorks.h: No such file or directory
compilation terminated.
make[2]: *** [CMakeFiles/FRC_UserProgram.dir/src/CommandBase.cpp.o] Error 1
make[1]: *** [CMakeFiles/FRC_UserProgram.dir/all] Error 2
make: *** [all] Error 2

Yes, that appears to be the case. Depending on *how* you built gcc, it may or may not have all of the include directories specified. It could also be that CMake is using the wrong gcc, so ask it to be verbose and check that. Finally, find that gcc's cc1 (probably in /usr/powerpc-wrs-vxworks/bin if memory serves) and run cc1 -v and try and figure out what include directories it has. Check the directories listed.

The final option is that that code worked on windows because windows is a non-case-sensitive filesystem. Check your capitalization (vxWorks.h maybe?)

I included what I pulled from your WPIlib github repo in the CMakeLists.txt locally, but I looks like from your cmake toolchain file, that I should be placing them in the place under /local .. include/WPILib, yes? Also, I added the sys-include to the list of includes, but it didn't look like it did anything to help.

cmake_minimum_required(VERSION 2.8)

project(FRC)

aux_source_directory(./src FRC_SOURCES) # I'll just run cmake all the time to
        # make sure new files are added

set(FRC_INCLUDES ${WPILIB_INCLUDE_DIR} wpilib ${TOOLCHAIN_PREFIX}/sys-include ) #defined by toolchain
set(FRC_LIBS ${WPILIB_LIBRARY}) # defined by toolchain

add_executable(FRC_UserProgram ${FRC_SOURCES})
set_target_properties(FRC_UserProgram PROPERTIES SUFFIX .out)
target_link_libraries(FRC_UserProgram ${FRC_LIBS})
include_directories(${FRC_INCLUDES})

I think the problem may relate to that I haven't compiled the wpilib into a shared library, like the toolchain suggests. (I have no ${TOOLCHAIN_PREFIX}/lib/libWPILib.a) How would I go about correctly including the patched WPILib and allow that to be linked correctly, etc?

If you run cmake on the wpilib directory with a working toolchain file, you'll get a *STATIC* library. One can then link to this library with the toolchain WPILIB_LIBRARY - which hopefully at some point in the future will become a .config file.