gentoo-overlay/app-admin/collectd/files/collectd-5.4.1-libperl.patch

diff --git configure.ac configure.ac
index ce8a9bc..eaa464e 100644
--- configure.ac
+++ configure.ac
@@ -3109,11 +3109,13 @@ if test "x$with_libperl" = "xyes" \
 then
   SAVE_CFLAGS="$CFLAGS"
   SAVE_LDFLAGS="$LDFLAGS"
+  SAVE_LIBS="$LIBS"
 dnl ARCHFLAGS="" -> disable multi -arch on OSX (see Config_heavy.pl:fetch_string)
   PERL_CFLAGS=`ARCHFLAGS="" $perl_interpreter -MExtUtils::Embed -e ccopts`
   PERL_LDFLAGS=`ARCHFLAGS="" $perl_interpreter -MExtUtils::Embed -e ldopts`
   CFLAGS="$CFLAGS $PERL_CFLAGS"
   LDFLAGS="$LDFLAGS $PERL_LDFLAGS"
+  LIBS="$LIBS -lperl -lpthread"

   AC_CACHE_CHECK([for libperl],
     [c_cv_have_libperl],
@@ -3132,7 +3134,10 @@ dnl ARCHFLAGS="" -> disable multi -arch on OSX (see Config_heavy.pl:fetch_string
 ]]]
       )],
       [c_cv_have_libperl="yes"],
-      [c_cv_have_libperl="no"]
+      [
+        c_cv_have_libperl="no"
+        LIBS="$SAVE_LIBS"
+      ]
     )
   )