path: root/config.tests
diff options
authorLada Trimasova <>2016-02-03 22:33:02 +0300
committerOswald Buddenhagen <>2016-02-05 16:29:09 +0000
commitf669ea0d54302de31456d57286aa0e4ca1443e98 (patch)
tree98847dd27ed38f654286d922a9ec8da050809a5d /config.tests
parenta107c5394a37df068d2f7b304004178a3c361750 (diff)
Link with -ldl option only when it is supported
-ldl option was used unconditionally while libdl is not supported when libc is static. Add build test to configure which checks if libdl is supported. QMAKE_LIBS_DYNLOAD in "src/corelib/plugin/plugin.pri" is now used only if libdl is available. qt_linux_find_symbol_sys from qlibrary_unix is now used only if QT_NO_DYNAMIC_LIBRARY is not defined. Initially reported by Buildroot autobuilder here: Change-Id: I0397472456efdc4f3ab5f24d01253bee8048a9d1 Reviewed-by: Oswald Buddenhagen <>
Diffstat (limited to 'config.tests')
2 files changed, 42 insertions, 0 deletions
diff --git a/config.tests/unix/libdl/libdl.cpp b/config.tests/unix/libdl/libdl.cpp
new file mode 100644
index 0000000000..28a82330f2
--- /dev/null
+++ b/config.tests/unix/libdl/libdl.cpp
@@ -0,0 +1,39 @@
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact:
+** This file is part of the config.tests of the Qt Toolkit.
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see For further
+** information use the contact form at
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: and
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+#include <dlfcn.h>
+int main(int, char **)
+ dlopen(0, 0);
diff --git a/config.tests/unix/libdl/ b/config.tests/unix/libdl/
new file mode 100644
index 0000000000..00d4c47c6c
--- /dev/null
+++ b/config.tests/unix/libdl/
@@ -0,0 +1,3 @@
+SOURCES = libdl.cpp
+CONFIG -= qt dylib
+LIBS += -ldl