build: fix dlfcn, sys/dl.h checks (!52) · Merge requests · VideoLAN / libbluray

We had a bug report downstream in Gentoo of a build failure on musl systems (https://bugs.gentoo.org/958375). It turns out that nothing defines HAVE_DLFCN_H or HAVE_DLFCN_H in configure.ac, and the logic in meson.build isn't ideal either.

Fix that by:

Looking for dlfcn.h, sys/dl.h in the autotools build
Check for dlfcn.h rather than assuming in the Meson build
Look for sys/dl.h in the Meson build as well

build: fix dlfcn, sys/dl.h checks

Merge request reports