Is it possible to make libraries in 32bit?

Question

linux

There is a library: https://github.com/grpc/grpc
Make builds in 64bit by default. How can this library be used in a 32bit application?

Answer 1

if the compiler is GCC, then CXXFLAGS="-m32" LDFLAGS="-m32 , after installing gcc-multilib

Answer 2

I understand that this is a 64-bit host machine?
Then it's just cross-compilation.
I looked in the Makefile, there is such advice:
where under cross-gcc you need to specify the compiler launch line with a target platform of 32 bits.