Link with libdl when using pgtk

* configure.ac: Define LIBMODULES on GNU/Linux when using pgtk, even
when not using modules, since pgtkterm.c uses dlsym.  (Bug#54378)

diff --git a/configure.ac b/configure.ac
index a315eeb6bd2304ae661399488aa0b3e9bb31d332..bc17935eb130709229639ae3015326a1d87f2d98 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -3940,6 +3940,16 @@ case "${opsys}" in
   darwin) MODULES_SECONDARY_SUFFIX='.so' ;;
   *) MODULES_SECONDARY_SUFFIX='' ;;
 esac
+
+# pgtkterm.c uses dlsym
+if test $window_system = pgtk; then
+  case $opsys in
+    gnu|gnu-linux)
+    LIBMODULES="-ldl"
+    ;;
+  esac
+fi
+
 if test "${with_modules}" != "no"; then
   case $opsys in
     gnu|gnu-linux)