Remove QLibrary code path specific to HP-UX on PA-RISC

The only mkspecs that enabled QT_HPUX_LD were removed in ab44ac0.

Change-Id: I9f27f0b487b69c11d19ba76801e3926b7894e6e7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

src/corelib/plugin/qlibrary_unix.cpp

@@ -44,25 +44,17 @@
 #include <qcoreapplication.h>
 #include <private/qfilesystementry_p.h>
 
+#include <dlfcn.h>
+
 #ifdef Q_OS_MAC
 #  include <private/qcore_mac_p.h>
 #endif
 
 QT_BEGIN_NAMESPACE
 
-#if !defined(QT_HPUX_LD)
-QT_BEGIN_INCLUDE_NAMESPACE
-#include <dlfcn.h>
-QT_END_INCLUDE_NAMESPACE
-#endif
-
 static QString qdlerror()
 {
-#if !defined(QT_HPUX_LD)
     const char *err = dlerror();
-#else
-    const char *err = strerror(errno);
-#endif
     return err ? QLatin1Char('(') + QString::fromLocal8Bit(err) + QLatin1Char(')'): QString();
 }
 
@@ -139,14 +131,6 @@ bool QLibraryPrivate::load_sys()
         suffixes = suffixes_sys(fullVersion);
     }
     int dlFlags = 0;
-#if defined(QT_HPUX_LD)
-    dlFlags = DYNAMIC_PATH | BIND_NONFATAL;
-    if (loadHints & QLibrary::ResolveAllSymbolsHint) {
-        dlFlags |= BIND_IMMEDIATE;
-    } else {
-        dlFlags |= BIND_DEFERRED;
-    }
-#else
     int loadHints = this->loadHints();
     if (loadHints & QLibrary::ResolveAllSymbolsHint) {
         dlFlags |= RTLD_NOW;
@@ -182,7 +166,6 @@ bool QLibraryPrivate::load_sys()
         dlFlags |= RTLD_MEMBER;
     }
 #endif
-#endif // QT_HPUX_LD
 
     // If the filename is an absolute path then we want to try that first as it is most likely
     // what the callee wants. If we have been given a non-absolute path then lets try the
@@ -211,11 +194,7 @@ bool QLibraryPrivate::load_sys()
             } else {
                 attempt = path + prefixes.at(prefix) + name + suffixes.at(suffix);
             }
-#if defined(QT_HPUX_LD)
-            pHnd = (void*)shl_load(QFile::encodeName(attempt), dlFlags, 0);
-#else
             pHnd = dlopen(QFile::encodeName(attempt), dlFlags);
-#endif
 
             if (!pHnd && fileName.startsWith(QLatin1Char('/')) && QFile::exists(attempt)) {
                 // We only want to continue if dlopen failed due to that the shared library did not exist.
@@ -253,11 +232,7 @@ bool QLibraryPrivate::load_sys()
 
 bool QLibraryPrivate::unload_sys()
 {
-#if defined(QT_HPUX_LD)
-    if (shl_unload((shl_t)pHnd)) {
-#else
     if (dlclose(pHnd)) {
-#endif
 #if defined (Q_OS_QNX)                // Workaround until fixed in QNX; fixes crash in
         char *error = dlerror();      // QtDeclarative auto test "qqmlenginecleanup" for instance
         if (!qstrcmp(error, "Shared objects still referenced")) // On QNX that's only "informative"
@@ -289,13 +264,7 @@ Q_CORE_EXPORT QFunctionPointer qt_mac_resolve_sys(void *handle, const char *symb
 
 QFunctionPointer QLibraryPrivate::resolve_sys(const char* symbol)
 {
-#if defined(QT_HPUX_LD)
-    QFunctionPointer address = 0;
-    if (shl_findsym((shl_t*)&pHnd, symbol, TYPE_UNDEFINED, &address) < 0)
-        address = 0;
-#else
     QFunctionPointer address = QFunctionPointer(dlsym(pHnd, symbol));
-#endif
     if (!address) {
         errorString = QLibrary::tr("Cannot resolve symbol \"%1\" in %2: %3").arg(
             QString::fromLatin1(symbol), fileName, qdlerror());