Cross compiler link in Docker container - c++

Question

I have some troubles using a docker container in order to cross compile a program with visual studio 2019.
Here is my docker file
FROM ubuntu:16.04
RUN dpkg-divert --local --rename --add /sbin/initctl
RUN ln -sf /bin/true /sbin/initctl
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update
RUN apt-get -y upgrade
# install 32 bit libraries required for gnuarm tools from
# https://launchpad.net/gcc-arm-embedded & a few minimalistic tools with ssh server
RUN dpkg --add-architecture i386 && \
apt-get update && \
apt-get -y install \
libc6:i386 libncurses5:i386 libstdc++6:i386 libpython2.7:i386 vim \
make git unzip \
sudo curl less tree openssh-server
# clean cache
RUN apt-get clean
RUN mkdir -p /var/run/sshd
COPY *.tgz /tmp/
RUN cd /tmp && \
tar zxvf gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf_5.3_sub1.0.3.tgz -C /opt && \
tar zxvf Compiler_gcc-linaro-5.3_patch_1.2.2.tgz && \
cd Compiler_gcc-linaro-5.3_patch && \
bash ./install-owa4x-comp-PATCH-1.2.2.sh && \
cd / && \
rm -rf /tmp/*
ENV PATH="${PATH}:/opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin"
RUN useradd -G sudo --create-home --shell /bin/bash --user-group myuser
RUN echo "myuser:myuser_pwd" | chpasswd
RUN echo "PATH=$PATH:/opt/gcc-linaro-5.3-2016.02-x86_64_arm-linuxgnueabihf/bin" >> /etc/profile
CMD ["source /etc/profile"]
CMD ["/usr/sbin/sshd", "-D"]
EXPOSE 22
ENV WORKSPACE /home/myuser/workspace
VOLUME ${WORKSPACE}
Here is how a create my image
docker build --tag cc_arm .
myuser#ubuntu:~/Documents/share$ docker run -d -p 5000:22 -v /home/myuser/Documents/share:/home/myuser/workspace cc_arm
But when I open a shell and type
which g++
which gcc
I have nothing. I've also tried to set the path manually
export C="/opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc"
export CXX="/opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++"
echo 'export CC=/opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc' >> ~/.bashrc
echo 'export CXX=/opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++' >> ~/.bashrc
But it doesn't work.
I think my environnement is okay because I can cross compile a simple programm using a g++ from the packages (locate in /usr/bin/g++)
sudo apt install -y openssh-server build-essential gdb rsync ninja-build zip
Thanks in advance.

Answer 1

Finally, I've changed my project in Visual Studio 2019 to a CMake project.
I've created a CMake file in the shared volume of my container.
SET(CMAKE_C_COMPILER /opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc)
SET(CMAKE_CXX_COMPILER /opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++)
SET(CMAKE_STRIP /opt/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-strip)
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_PROCESSOR arm)
SET(CMAKE_SYSTEM_VERSION 1)
And in Visual Studio 2019, I've changed the launch.vs.json
"configurations": [
{
"type": "cppgdb",
"name": "CMakeProject6 (CMakeProject6\\CMakeProject6)",
"project": "CMakeLists.txt",
"projectTarget": "CMakeProject6 (CMakeProject6\\CMakeProject6)",
"debuggerConfiguration": "gdb",
"args": [],
"env": {},
"remoteMachineName": "10.0.0.1 (username=root, port=22, authentication=Password)",
"deploy": [
{
"sourceMachine": "192.168.72.144 (username=root, port=5000, authentication=Password)", // DOCKER CONTAINER
"targetMachine": "10.0.0.1 (username=root, port=22, authentication=Password)", // REMOTE MACHINE
"deploymentType": "RemoteRemote"
}
]
}