package: enable GL tests on MinGW.

package/archlinux/PKGBUILD-mingw-w64

@@ -35,6 +35,7 @@ build() {
         -DWITH_FONTCONVERTER=ON \
         -DWITH_MAGNUMINFO=ON \
         -DBUILD_TESTS=ON \
+        -DBUILD_GL_TESTS=ON \
         -G Ninja
     ninja
 
@@ -59,6 +60,7 @@ build() {
         -DWITH_FONTCONVERTER=ON \
         -DWITH_MAGNUMINFO=ON \
         -DBUILD_TESTS=ON \
+        -DBUILD_GL_TESTS=ON \
         -G Ninja
     ninja
 }

package/ci/jenkins-mingw-w64.xml

@@ -87,7 +87,7 @@ cmake .. \
     -DCMAKE_FIND_ROOT_PATH=${JENKINS_HOME}/filesystem/mingw-w64-${arch}-${libraries}-${compatibility} \
     -DCMAKE_INSTALL_PREFIX=${JENKINS_HOME}/filesystem/mingw-w64-${arch}-${libraries}-${compatibility} \
     -DBUILD_TESTS=ON \
-  `#-DBUILD_GL_TESTS=ON` \
+    -DBUILD_GL_TESTS=ON \
     -DBUILD_DEPRECATED=${deprecated_build_flag} \
     ${static_build_flag} \
     -DWITH_AUDIO=ON \