Is this right?

[tangm421]

I usually compile it like this in arm-linux platform. Although it can be done in this way, but it also seemed stupid. Is there any other perfect and simple way?

---

• Step 1: compile jthread

1. change workspace to compile directory of jthread.

    # tar -jxvf jthread-1.3.1.tar.bz2
    # mkdir jthread_tmp
    # cd jthread_tmp

2. Add this following lines to front of the file ../CMakeLists.txt.

    set(CMAKE_SYSTEM_NAME Linux)
    set(CMAKE_C_COMPILER arm-none-linux-gnueabi-gcc)
    set(CMAKE_CXX_COMPILER arm-none-linux-gnueabi-g++)
    set(CMAKE_INSTALL_PREFIX /root/28181)

3. And then.

    # cmake../

4. After that, add this following lines to front of the file ./cmake/JThreadConfig.cmake, let the jrtp link static library of jthread.

    set(JTHREAD_LIBRARIES  "/root/28181/lib/libjthread.a" "-lpthread")
    # make install

• Step 2: compile jrtp

1. change workspace to compile directory of jrtp.

    # mkdir jrtplib_tmp
    # cd jrtplib_tmp

2. Add this following lines to front of the file ../CMakeLists.txt.

    set(CMAKE_SYSTEM_NAME Linux)
    set(CMAKE_C_COMPILER arm-none-linux-gnueabi-gcc)
    set(CMAKE_CXX_COMPILER arm-none-linux-gnueabi-g++)
    set(CMAKE_INSTALL_PREFIX /root/28181)
    include(${CMAKE_INSTALL_PREFIX}/lib/cmake/JThread/JThreadConfig.cmake)

3. Then follow this commands, jrtp will automatically detect the correct JThread.

    # cmake ../
    # make install

[j0r1]

I'm not sure if what you're doing is the 'correct' way, I guess in the end the only thing that matters is whether or not it works.

To compile something for the raspberry pi, I did the following. First, I created a toolchain file called toolchain.cmake:

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)
set(tools /path/to/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64)
set(CMAKE_C_COMPILER ${tools}/bin/arm-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER ${tools}/bin/arm-linux-gnueabihf-g++)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

Then, first for jthread and then for jrtplib, I ran

ccmake .. -DCMAKE_TOOLCHAIN_FILE=/path/to/toolchain.cmake \
                -DCMAKE_INSTALL_PREFIX=/path/to/rpiroot/ \
                -DCMAKE_FIND_ROOT_PATH=/path/to/rpiroot/ 

Perhaps something similar works for you as well?

[tangm421]

Yeah, i can't agree more that the only thing that matters is whether or not it works. In fact, it works good on my way, thanks.