prefixed many functions and classes with QSE_EXPORT

qse/configure

@@ -16942,6 +16942,62 @@ eval "LTDLOPEN=\"$libname_spec\""
 
 
 
+if test "x$with_included_ltdl" != "xyes"; then
+	save_CFLAGS="$CFLAGS"
+	save_LDFLAGS="$LDFLAGS"
+	CFLAGS="$CFLAGS $LTDLINCL"
+	LDFLAGS="$LDFLAGS $LIBLTDL"
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lt_dladvise_init in -lltdl" >&5
+$as_echo_n "checking for lt_dladvise_init in -lltdl... " >&6; }
+if ${ac_cv_lib_ltdl_lt_dladvise_init+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lltdl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char lt_dladvise_init ();
+int
+main ()
+{
+return lt_dladvise_init ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_ltdl_lt_dladvise_init=yes
+else
+  ac_cv_lib_ltdl_lt_dladvise_init=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ltdl_lt_dladvise_init" >&5
+$as_echo "$ac_cv_lib_ltdl_lt_dladvise_init" >&6; }
+if test "x$ac_cv_lib_ltdl_lt_dladvise_init" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBLTDL 1
+_ACEOF
+
+  LIBS="-lltdl $LIBS"
+
+else
+  as_fn_error $? "installed libltdl is too old" "$LINENO" 5
+fi
+
+	LDFLAGS="$save_LDFLAGS"
+	CFLAGS="$save_CFLAGS"
+fi
+
 if test "$ac_test_CFLAGS" != "set"
 then
 	if test "$GCC" = "yes"