How to configure configure script to check dependencies

Question

I created a configure script with autoconf to create my project.

It works fine if I don't have a library installed. A return error if some files are missing, but it should be checked with the configure script, I think?

So my question is: how to change the autoconf script created to look for dependencies and tell the user which libraries he is missing?

Answer 1

Depending on the dependency, there is no general solution.

AC_CHECK_LIB AC_SEARCH_LIBS , , .

pkg-config - , , .

, AC pkg-config , , , , , , .

Answer 2

, . Stick, , ( Shlomi Fish) configure.ac:

if test "x$requires_libavl" = "xyes" ; then
    AC_CHECK_LIB(avl, avl_create, [], [
        echo "Error! You need to have libavl around."
        exit -1
        ])
fi

, pre-2.5 autoconf, configure.in.

Answer 3

, , - , , , / configure script. , , . , , .