How to decide library install path on different linux systems?

Fedora have dynamic libs on /usr/lib64 and /usr/lib, for 64-bit and 32-bit libs separately; while 64-bit Debian install some 64-bit libraries on /usr/lib/x86_64-linux-gnu, but seems some 64-bit libs are still in /usr/lib.

This looks pretty messy. So when I write a cmake file for my project, how to decide the place for installing the compiled libs?

Solution

This is documented in GNUInstallDirs, you would typically use a variable such as CMAKE_INSTALL_LIBDIR in your CMakeLists.txt files.

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