DevHeads IoT Integration Server•3mo ago

Issues with Boost Library for x86_32 Architecture on Ubuntu 22.04 – How to Manage Conflicts with x86

I'm working on a C++ project that uses the Boost program_options library on Ubuntu 22.04 system with an Intel Core i7 processor. I've successfully compiled and run the project for x86_64 architecture using the following command:

g++ program.cpp -m64 -static -lboost_program_options -o compiled/program.out

g++ program.cpp -m64 -static -lboost_program_options -o compiled/program.out

So when I try to compile for x86_32 architecture using -m32, I encounter the following error:

/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../libboost_program_options.a when searching for -lboost_program_options
/usr/bin/ld: skipping incompatible /usr/lib/libboost_program_options.a when searching for -lboost_program_options
/usr/bin/ld: cannot find -lboost_program_options
collect2: error: ld returned 1 exit status

/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../libboost_program_options.a when searching for -lboost_program_options
/usr/bin/ld: skipping incompatible /usr/lib/libboost_program_options.a when searching for -lboost_program_options
/usr/bin/ld: cannot find -lboost_program_options
collect2: error: ld returned 1 exit status

I've attempted to install the 32-bit Boost library using

sudo apt-get install libboost_program_options-dev:i386

sudo apt-get install libboost_program_options-dev:i386

but it conflicts with the 64-bit version. How can I effectively manage Boost library installations for both x86 and x86_64 architectures on the same system? Are there any alternative approaches or workarounds to avoid conflicts and ensure compatibility?

Solution:

Was receiving a linker error indicating that it cannot find the 32-bit Boost library, and I noticed that some of my project's dependencies might also require specific 32-bit libraries , but I was able to manage these with pkg-config . Thanks

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5 Replies

wafa_ath•3mo ago

U can start with 1. Install multilib support:

sudo apt-get install gcc-multilib g++-multilib'

2. Install both 32-bit and 64-bit Boost libraries:
   ```
   sudo apt-get install libboost-program-options-dev:amd64
   sudo apt-get install libboost-program-options-dev:i386
   ```
3. When compiling, specify the library path explicitly:
   - For 64-bit:

-L/usr/lib/x86_64-linux-gnu -lboost_program_options


   - For 32-bit:

-L/usr/lib/i386-linux-gnu -lboost_program_options`

Camila_99$$•3mo ago

Hi marvee ! Have you tried using pkg-config to auto-detect library paths? It might help avoid the conflicts between 32-bit and 64-bit Boost libraries:

g++ program.cpp -m32 $(pkg-config --cflags --libs boost_program_options) -o compiled/program.out

g++ program.cpp -m32 $(pkg-config --cflags --libs boost_program_options) -o compiled/program.out

Camila_99$$•3mo ago

@Marvee Amasi But I’m curious, have you encountered any specific issues while setting up the 32-bit libraries with multilib support? Sometimes manually setting paths with -L and -I can help too, but it could be tricky depending on the library versions installed. What error messages do you get when trying this approach?

Marvee Amasi•3mo ago

Yes this g++ program.cpp -m32 $(pkg-config --cflags --libs boost_program_options) -o compiled/program.out it actually managed my dependences , all necessary libraries were included in the compilation process.

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Marvee Amasi•3mo ago

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Issues with Boost Library for x86_32 Architecture on Ubuntu 22.04 – How to Manage Conflicts with x86