Purge some unused code for the OpenGL library name

We had a global static, a setter for it (that's nowhere used within Qt
code) and a getter for it whose only use was commented out.  Neither
was declared in any header; the getter's commented-out client had a
local extern declaration at the point of (non-)use.

Found while reviewing a change to the next few lines of code after the
commented-out use of the getter.

Change-Id: I393d56219cb7dd7cf836ca80e1bdd605a2914003
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

2 files changed, 0 insertions, 21 deletions

diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index d9f2113c14..78c2dfda7c 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -5195,25 +5195,6 @@ void QGLWidgetPrivate::cleanupColormaps()
 {
 }
 
-Q_GLOBAL_STATIC(QString, qt_gl_lib_name)
-
-void qt_set_gl_library_name(const QString& name)
-{
-    qt_gl_lib_name()->operator=(name);
-}
-
-const QString qt_gl_library_name()
-{
-    if (qt_gl_lib_name()->isNull()) {
-# if defined(QT_OPENGL_ES_2)
-        return QLatin1String("GLESv2");
-# else
-        return QLatin1String("GL");
-# endif
-    }
-    return *qt_gl_lib_name();
-}
-
 void QGLContextGroup::addShare(const QGLContext *context, const QGLContext *share) {
     Q_ASSERT(context && share);
     if (context->d_ptr->group == share->d_ptr->group)
diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
index 741885e321..93cd3e215f 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
@@ -648,8 +648,6 @@ QFunctionPointer QGLXContext::getProcAddress(const char *procName)
 #endif
             {
 #if QT_CONFIG(library)
-                extern const QString qt_gl_library_name();
-//                QLibrary lib(qt_gl_library_name());
                 QLibrary lib(QLatin1String("GL"));
                 if (!lib.load())
                     lib.setFileNameAndVersion(QLatin1String("GL"), 1);