meson: Fix build with glibc 2.31

In order to use dlopen it may be required to link with libdl depending
on the libc. Add the proper dependency to fix the build in Debian
Bullseye.

Closes: https://github.com/kmod-project/kmod/issues/298
Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com>
Link: https://github.com/kmod-project/kmod/pull/299
(cherry picked from commit bddca5c9de3286be8e68913093fbb46b21f3221b)

diff --git a/meson.build b/meson.build
index 800b6e4c9577772180663f079067ab82a81a825d..f8f26aee11bd61ae4ac7637cb8ee0111c8796269 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -394,6 +394,11 @@ libkmod_files = files(
 )
 
 libkmod_deps = []
+cdeps = []
+
+if not cc.has_function('dlopen')
+  cdeps += cc.find_library('dl', required : true)
+endif
 
 if dep_map.get('zstd').found()
   libkmod_files += files('libkmod/libkmod-file-zstd.c')
@@ -419,7 +424,7 @@ install_headers('libkmod/libkmod.h')
 libkmod = shared_library(
   'kmod',
   libkmod_files,
-  dependencies : libkmod_deps,
+  dependencies : libkmod_deps + cdeps,
   link_with : libshared,
   link_args : ['-Wl,--version-script', meson.current_source_dir() /
                                                   'libkmod/libkmod.sym'],
@@ -434,12 +439,13 @@ pkg.generate(
   description : 'Library to deal with kernel modules',
   libraries : libkmod,
   requires_private : libkmod_deps,
+  libraries_private : cdeps,
 )
 
 libkmod_internal = static_library(
   'kmod-internal',
   objects : libkmod.extract_all_objects(recursive : true),
-  dependencies : libkmod_deps,
+  dependencies : libkmod_deps + cdeps,
   install : false,
 )