Android: Fix loading of plugins

In 5bb178c479a247720fbc3fbb7f06a32b725193ac, the Android platform plugin was moved from
platforms/android to platforms/. The unforeseen consequence of this was that the plugin
loader for plugins/platforms would now find it, whereas before it would be ignored. It
would therefore be detected as the appropriate plugin, but since it was intended to be
loaded as a static plugin, loading it dynamically would fail.

Instead of fixing the static plugin loading, we remove this hack.

Fixes: QTBUG-78440
Change-Id: Idcb6c075fdebaf67644f32a59d7aaf0d1c0bbe20
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/corelib/plugin/qlibrary_unix.cpp b/src/corelib/plugin/qlibrary_unix.cpp
index 44d5513163..f0de1010d7 100644
--- a/src/corelib/plugin/qlibrary_unix.cpp
+++ b/src/corelib/plugin/qlibrary_unix.cpp
@@ -236,6 +236,14 @@ bool QLibraryPrivate::load_sys()
                 auto attemptFromBundle = attempt;
                 pHnd = dlopen(QFile::encodeName(attemptFromBundle.replace(QLatin1Char('/'), QLatin1Char('_'))), dlFlags);
             }
+            if (pHnd) {
+                using JniOnLoadPtr = jint (*)(JavaVM *vm, void *reserved);
+                JniOnLoadPtr jniOnLoad = reinterpret_cast<JniOnLoadPtr>(dlsym(pHnd, "JNI_OnLoad"));
+                if (jniOnLoad && jniOnLoad(QtAndroidPrivate::javaVM(), nullptr) == JNI_ERR) {
+                    dlclose(pHnd);
+                    pHnd = nullptr;
+                }
+            }
 #endif
 
             if (!pHnd && fileName.startsWith(QLatin1Char('/')) && QFile::exists(attempt)) {