Docker build cmake multiple containers with same custom library - c++

Question

I'll start off by saying that I'm new to Docker and a novice with cmake so forgive any ignorance. I'm working on porting a series of applications and a single shared library to a docker environment. From my understanding Docker does not play well with shared libraries so I'd need to static link. My goal is to use docker-compose to build multiple different application containers but each of these containers using the same custom library (that was setup as a .so in previous environment). I'm currently setup to do cross-compile w/ Docker and can build and run each app w/o the library. Now I need to add in the library.
Current folder/file setup is as follows:
app1:
inc:
app1.h <--includes mysharedlib.h
src:
app1.cpp
CMakeLists.txt
custom-toolchain.cmake
Dockerfile
app2:
inc:
app2.h <--includes mysharedlib.h
src:
app2.cpp
CMakeLists.txt
custom-toolchain.cmake
Dockerfile
MySharedLib:
inc:
mysharedlib.h
src:
mysharedlib.cpp
custom-toolchain.cmake
CMakeLists.txt
Can someone please help explain how I go about including the library into each container and how to include it correctly with CMake?
current working app implementation is as follows:
dockerfile for app1:
ARG IMAGE_TAG=2-bullseye
ARG TOOLCHAIN_ARCH=aarch64
ARG PKG_ARCH=arm64
ARG IMAGE_ARCH=linux/arm64
FROM torizon/debian-cross-toolchain-arm64:2-bullseye AS build
ARG PKG_ARCH
ARG TOOLCHAIN_ARCH
RUN apt-get -y update && apt-get install -y \
cmake \
python-dev \
gcc \
make \
gcc \
binutils \
build-essential \
wget\
libasound2-dev:arm64 \
&& apt-get clean && apt-get autoremove && rm -rf /var/lib/apt/lists/*
WORKDIR /mypjsip
RUN mkdir out_libs
RUN wget https://github.com/pjsip/pjproject/archive/2.10.tar.gz && tar -xvf 2.10.tar.gz
RUN cd pjproject-2.10/ && ./configure --host=aarch64-linux-gnu --disable-libwebrtc && make dep && make && make DESTDIR=/mypjsip/out_libs install
COPY . app1_src
COPY $TOOLCHAIN_ARCH-toolchain.cmake app1_src/$TOOLCHAIN_ARCH-toolchain.cmake
RUN mkdir app1_src/build
RUN cd app1_src/build && cmake .. -DCMAKE_TOOLCHAIN_FILE=./$TOOLCHAIN_ARCH-toolchain.cmake
RUN cd app1_src/build && make install
FROM --platform=linux/arm64 torizon/debian:$IMAGE_TAG
RUN apt-get -y update && apt-get install -y \
libasound2 \
alsa-utils \
&& apt-get clean && apt-get autoremove && rm -rf /var/lib/apt/lists/*
COPY --from=build /mypjsip/pjproject-2.10/pjsip-apps/bin/pjsua* /usr/local/bin/pjsua
COPY --from=build /mypjsip/out_libs/* /
COPY --from=build /usr/bin/app1 /usr/bin/
ENTRYPOINT [ "/usr/bin/app1" ]
cmake for app1:
cmake_minimum_required(VERSION 3.13)
project(app1)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(INC_DIR ./inc)
include_directories(${INC_DIR})
AUX_SOURCE_DIRECTORY(src SOURCE_FILES)
add_executable(app1 ${SOURCE_FILES})
set(WARNINGS "\
-pedantic \
-pedantic-errors \
-Wextra \
-Wcast-align \
-Wcast-qual \
-Wdisabled-optimization \
-Werror \
-Wfloat-equal \
-Wformat=2 \
-Wformat-nonliteral \
-Wformat-security \
-Wformat-y2k \
-Wimport \
-Winit-self \
-Winline \
-Winvalid-pch \
-Wmissing-field-initializers \
-Wmissing-format-attribute \
-Wmissing-include-dirs \
-Wmissing-noreturn \
-Wpacked \
-Wpointer-arith \
-Wredundant-decls \
-Wshadow \
-Wstack-protector \
-Wstrict-aliasing=2 \
-Wswitch-default \
-Wswitch-enum \
-Wunreachable-code \
-Wvariadic-macros \
-Wwrite-strings")
if ( CMAKE_COMPILER_IS_GNUCXX )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNINGS} ")
endif(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_INSTALL_PREFIX /usr)
install(TARGETS app1 DESTINATION bin)