Issue in cross compiling grpc for armv7l architecture

[Pragadeesh nagaraj]

Hi, 

I need to cross compile grpc to be used in BeagleBone black for armv7l architecture.

I tried cross compilation but got an error.

Steps Followed,

1. Installed grpc for linux host system x86_64 architecture - This is successful.

2. Created Cmake Tool chain with the following details

cat > toolchain.cmake <<'EOT'

SET(CMAKE_SYSTEM_NAME Linux)

SET(CMAKE_SYSTEM_PROCESSOR armv7l)

set(CMAKE_STAGING_PREFIX /opt/grpc)

set(CMAKE_C_COMPILER /home/user/Tool_Chain/arm_cross_compile/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc)

set(CMAKE_CXX_COMPILER /home/user/Tool_Chain/arm_cross_compile/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/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)

EOT

3. Gave the Cmake options to build grpc

mkdir -p "cmake/build_arm"

pushd "cmake/build_arm"

cmake -DCMAKE_TOOLCHAIN_FILE=/home/user/workspace/grpc/grpc_armv7l/toolchain.cmake \

      -DgRPC_INSTALL=ON \

      -DBUILD_SHARED_LIBS=ON \

      -DgRPC_BUILD_CSHARP_EXT=OFF \

      -DgRPC_BUILD_GRPC_CSHARP_PLUGIN=OFF \

      -DgRPC_BUILD_GRPC_NODE_PLUGIN=OFF \

      -DgRPC_BUILD_TESTS=OFF \

      -DCMAKE_INSTALL_PREFIX=/opt/grpc_armv7l \

      ../..

make "-j${GRPC_CPP_DISTRIBTEST_BUILD_COMPILER_JOBS}" install

popd

4. It is building some files, when it reaches the systemd_utils.cc, it is throwing <systemd/sd-daemon.h> No such file or directory error.

5.Should this include be in the host machine or in the path of cross-compile tool chain includes path.

6. I am using tool chain from linaro. version - gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.

Need help in resolving the issue.

[Pragadeesh nagaraj]

Need help on this issue, still not resolved.

[AJ Heller]

I don't use CMake, but I believe you can pass `-DgRPC_USE_SYSTEMD=OFF` (based on https://github.com/grpc/grpc/blob/84ee28e6956ed7cd51462aad52e64782dd5ca34b/cmake/systemd.cmake#L17)

Hope this helps,

-aj

[Mladen Božić]

A bit of late replay...

I have the same issue currently, cross compiling for arm64 for Toradex SoM.
For me,  -DgRPC_USE_SYSTEMD=OFF does nothing.

Also, I'm not sure if systemd is necessary or not.