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shared libraries

sonames and real names

Every shared library has a soname and a real name
A soname apparently is lib${LIBNAME}${API_VERSION}.so.${MAJOR_VERSION}. Usually, ${API_VERSION} is empty. So, it becomes something like libTQ84.so.2.
$MAJOR_VERSION is incremented when the library's interface changes.
The real name is ${SONAME}.${MINOR_VERSION}.${RELEASE_NUMBER}. The name is the name of the file that contains the actual code of the library.

Standard directories

Shared libraries are installed, by standard, in /usr/lib or /usr/local/lib.

See also

Creating a shared and static library with the gnu compiler (gcc)
The ctypes Python standard library makes it possible to call shared libraries from Python.

Index

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