Make it possible to disable weak linking

[lkundrak]

It's rather fragile -- the .so files provide no ABI stability whatsoever
(unlike relying on SONAMEs). This also makes it cumbersome to intergate RPM
packaging as it effectively defeats the dependency generators as no .dynsym
entries are generated.

[lkundrak]

Also, this generates a couple of mismatch warnings for the NO_WEAK_LINK case.

It has aleady been wrong, but the dlopen() dance effectively defeated the compiler's type checking. :(

[Cloudef]

Better solution would be to compile plugins and link against the plugins. I wanted to avoid this to keep the library itself simple though.

[robotanarchy]

I ran into the same issue while porting wlc to Void Linux.

My workaround: Before compiling, replace all "lib*.so" strings with their correct soname by resolving the links in /usr/lib in the build environment.

echo "Replacing dynamically loaded libraries with their sonames..."
while IFS= read -r i; do
    file="$(echo $i | cut -d ':' -f 1)"
    lib="$(echo $i | cut -d '"' -f 2)"
    [ -e "/usr/lib/$lib" ] || continue
    lib_soname="$(basename $(realpath /usr/lib/$lib))"
    echo "$file: $lib -> $lib_soname"
    sed --in-place "s/\"$lib\"/\"$lib_soname\"/g" "$file"
done < <(grep -r -E '"lib.+\.so"' --only-matching src)

As an alternative to the plugins architecture, how about putting the correct sonames with CMake in a generated header file and include that headerfile where necessary?

[Cloudef]

285ec2d