diff --git a/qt5-base/mingw-w64-opengl/PKGBUILD b/qt5-base/mingw-w64-opengl/PKGBUILD
index 57dd835c..fa5c4563 100644
--- a/qt5-base/mingw-w64-opengl/PKGBUILD
+++ b/qt5-base/mingw-w64-opengl/PKGBUILD
@@ -5,7 +5,7 @@
 
 pkgname=mingw-w64-qt5-base-opengl
 pkgver=5.5.1
-pkgrel=1
+pkgrel=2
 pkgdesc="A cross-platform application and UI framework (mingw-w64)"
 arch=(i686 x86_64)
 url="https://www.qt.io/"
@@ -252,8 +252,15 @@ build() {
     # fix include directory of dbus
     qt_configure_args+=" $(${_arch}-pkg-config --cflags-only-I dbus-1 --cflags)"
 
-    isOpenGL && qt_configure_args+=' -opengl desktop'
-    isStatic && qt_configure_args+=' -opengl no'
+    if isStatic; then
+      qt_configure_args+=' -opengl no'
+    elif isOpenGL; then
+      qt_configure_args+=' -opengl desktop'
+    else
+      # GL_GLEXT_PROTOTYPES must be defined to enable declarations GLES functions
+      qt_configure_args+=' -DGL_GLEXT_PROTOTYPES'
+    fi
+    # TODO: allow dynamic OpenGL configuration
 
     unset PKG_CONFIG_PATH
 
diff --git a/qt5-base/mingw-w64-static/PKGBUILD b/qt5-base/mingw-w64-static/PKGBUILD
index 77518a12..ab84c7dd 100644
--- a/qt5-base/mingw-w64-static/PKGBUILD
+++ b/qt5-base/mingw-w64-static/PKGBUILD
@@ -5,7 +5,7 @@
 
 pkgname=mingw-w64-qt5-base-static
 pkgver=5.5.1
-pkgrel=1
+pkgrel=2
 pkgdesc="A cross-platform application and UI framework (mingw-w64)"
 arch=(i686 x86_64)
 url="https://www.qt.io/"
@@ -252,8 +252,15 @@ build() {
     # fix include directory of dbus
     qt_configure_args+=" $(${_arch}-pkg-config --cflags-only-I dbus-1 --cflags)"
 
-    isOpenGL && qt_configure_args+=' -opengl desktop'
-    isStatic && qt_configure_args+=' -opengl no'
+    if isStatic; then
+      qt_configure_args+=' -opengl no'
+    elif isOpenGL; then
+      qt_configure_args+=' -opengl desktop'
+    else
+      # GL_GLEXT_PROTOTYPES must be defined to enable declarations GLES functions
+      qt_configure_args+=' -DGL_GLEXT_PROTOTYPES'
+    fi
+    # TODO: allow dynamic OpenGL configuration
 
     unset PKG_CONFIG_PATH
 
diff --git a/qt5-base/mingw-w64/PKGBUILD b/qt5-base/mingw-w64/PKGBUILD
index 219067fa..c8809529 100644
--- a/qt5-base/mingw-w64/PKGBUILD
+++ b/qt5-base/mingw-w64/PKGBUILD
@@ -5,7 +5,7 @@
 
 pkgname=mingw-w64-qt5-base
 pkgver=5.5.1
-pkgrel=1
+pkgrel=2
 pkgdesc="A cross-platform application and UI framework (mingw-w64)"
 arch=(i686 x86_64)
 url="https://www.qt.io/"
@@ -252,14 +252,22 @@ build() {
     # fix include directory of dbus
     qt_configure_args+=" $(${_arch}-pkg-config --cflags-only-I dbus-1 --cflags)"
 
-    isOpenGL && qt_configure_args+=' -opengl desktop'
-    isStatic && qt_configure_args+=' -opengl no'
+    if isStatic; then
+      qt_configure_args+=' -opengl no'
+    elif isOpenGL; then
+      qt_configure_args+=' -opengl desktop'
+    else
+      # GL_GLEXT_PROTOTYPES must be defined to enable declarations GLES functions
+      qt_configure_args+=' -DGL_GLEXT_PROTOTYPES'
+    fi
+    # TODO: allow dynamic OpenGL configuration
 
     unset PKG_CONFIG_PATH
 
     if ! isStatic; then
       export QT_LFLAGS_MYSQL="-L/usr/${_arch}/lib -lmysql"
     fi
+
     # Qt doesn't detect mysql correctly, so use this:
     export QT_CFLAGS_MYSQL="-I/usr/${_arch}/include/mariadb"
     #export QT_LFLAGS_MYSQL_R="-lmariadbclient -lws2_32 -lpthread -lz -lm -lssl -lcrypto"