bool QLibraryPrivate::load_sys()
{
//avoid 'Bad Image' message box
UINT oldmode = SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
// We make the following attempts at locating the library:
//
// WinCE
// if (absolute)
// fileName
// fileName + ".dll"
// else
// fileName + ".dll"
// fileName
// QFileInfo(fileName).absoluteFilePath()
//
// Windows
// if (absolute)
// fileName
// fileName + ".dll"
// else
// fileName + ".dll"
// fileName
//
// NB If it's a plugin we do not ever try the ".dll" extension
QStringList attempts;
if (pluginState != IsAPlugin)
attempts.append(fileName + QLatin1String(".dll"));
// If the fileName is an absolute path we try that first, otherwise we
// use the system-specific suffix first
QFileSystemEntry fsEntry(fileName);
if (fsEntry.isAbsolute()) {
attempts.prepend(fileName);
} else {
attempts.append(fileName);
#if defined(Q_OS_WINCE)
attempts.append(QFileInfo(fileName).absoluteFilePath());
#endif
}
Q_FOREACH (const QString &attempt, attempts) {
pHnd = LoadLibrary((wchar_t*)QDir::toNativeSeparators(attempt).utf16());
// If we have a handle or the last error is something other than "unable
// to find the module", then bail out
if (pHnd || ::GetLastError() != ERROR_MOD_NOT_FOUND)
break;
}
bool QLibraryPrivate::load_sys()
{
QString attempt;
#if !defined(QT_NO_DYNAMIC_LIBRARY)
QFileSystemEntry fsEntry(fileName);
QString path = fsEntry.path();
QString name = fsEntry.fileName();
if (path == QLatin1String(".") && !fileName.startsWith(path))
path.clear();
else
path += QLatin1Char('/');
QStringList suffixes;
QStringList prefixes;
if (pluginState != IsAPlugin) {
prefixes << QLatin1String("lib");
#if defined(Q_OS_HPUX)
// according to
// http://docs.hp.com/en/B2355-90968/linkerdifferencesiapa.htm
// In PA-RISC (PA-32 and PA-64) shared libraries are suffixed
// with .sl. In IPF (32-bit and 64-bit), the shared libraries
// are suffixed with .so. For compatibility, the IPF linker
// also supports the .sl suffix.
// But since we don't know if we are built on HPUX or HPUXi,
// we support both .sl (and .<version>) and .so suffixes but
// .so is preferred.
# if defined(__ia64)
if (!fullVersion.isEmpty()) {
suffixes << QString::fromLatin1(".so.%1").arg(fullVersion);
} else {
suffixes << QLatin1String(".so");
}
# endif
if (!fullVersion.isEmpty()) {
suffixes << QString::fromLatin1(".sl.%1").arg(fullVersion);
suffixes << QString::fromLatin1(".%1").arg(fullVersion);
} else {
suffixes << QLatin1String(".sl");
}
#elif defined(Q_OS_AIX)
suffixes << ".a";
#else
if (!fullVersion.isEmpty()) {
suffixes << QString::fromLatin1(".so.%1").arg(fullVersion);
} else {
suffixes << QLatin1String(".so");
}
#endif
# ifdef Q_OS_MAC
if (!fullVersion.isEmpty()) {
suffixes << QString::fromLatin1(".%1.bundle").arg(fullVersion);
suffixes << QString::fromLatin1(".%1.dylib").arg(fullVersion);
} else {
suffixes << QLatin1String(".bundle") << QLatin1String(".dylib");
}
#endif
}
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
if (loadHints & QLibrary::ResolveAllSymbolsHint) {
dlFlags |= RTLD_NOW;
} else {
dlFlags |= RTLD_LAZY;
}
if (loadHints & QLibrary::ExportExternalSymbolsHint) {
dlFlags |= RTLD_GLOBAL;
}
#if !defined(Q_OS_CYGWIN)
else {
#if defined(Q_OS_MAC)
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
#endif
dlFlags |= RTLD_LOCAL;
}
#endif
// Provide access to RTLD_NODELETE flag on Unix
// From GNU documentation on RTLD_NODELETE:
// Do not unload the library during dlclose(). Consequently, the
// library's specific static variables are not reinitialized if the
// library is reloaded with dlopen() at a later time.
#ifdef RTLD_NODELETE
if (loadHints & QLibrary::PreventUnloadHint) {
dlFlags |= RTLD_NODELETE;
}
#endif
#if defined(Q_OS_AIX) // Not sure if any other platform actually support this thing.
if (loadHints & QLibrary::LoadArchiveMemberHint) {
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
// native library name first to avoid unnecessary calls to dlopen().
if (fsEntry.isAbsolute()) {
suffixes.prepend(QString());
prefixes.prepend(QString());
} else {
suffixes.append(QString());
prefixes.append(QString());
}
bool retry = true;
for(int prefix = 0; retry && !pHnd && prefix < prefixes.size(); prefix++) {
for(int suffix = 0; retry && !pHnd && suffix < suffixes.size(); suffix++) {
if (!prefixes.at(prefix).isEmpty() && name.startsWith(prefixes.at(prefix)))
continue;
if (!suffixes.at(suffix).isEmpty() && name.endsWith(suffixes.at(suffix)))
continue;
if (loadHints & QLibrary::LoadArchiveMemberHint) {
attempt = name;
int lparen = attempt.indexOf(QLatin1Char('('));
if (lparen == -1)
lparen = attempt.count();
attempt = path + prefixes.at(prefix) + attempt.insert(lparen, suffixes.at(suffix));
} 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.
// However, we are only able to apply this check for absolute filenames (since they are
// not influenced by the content of LD_LIBRARY_PATH, /etc/ld.so.cache, DT_RPATH etc...)
// This is all because dlerror is flawed and cannot tell us the reason why it failed.
retry = false;
}
}
}
#ifdef Q_OS_MAC
if (!pHnd) {
QByteArray utf8Bundle = fileName.toUtf8();
QCFType<CFURLRef> bundleUrl = CFURLCreateFromFileSystemRepresentation(NULL, reinterpret_cast<const UInt8*>(utf8Bundle.data()), utf8Bundle.length(), true);
QCFType<CFBundleRef> bundle = CFBundleCreate(NULL, bundleUrl);
if(bundle) {
QCFType<CFURLRef> url = CFBundleCopyExecutableURL(bundle);
char executableFile[FILENAME_MAX];
CFURLGetFileSystemRepresentation(url, true, reinterpret_cast<UInt8*>(executableFile), FILENAME_MAX);
attempt = QString::fromUtf8(executableFile);
pHnd = dlopen(QFile::encodeName(attempt), dlFlags);
}
}
#endif
#endif // QT_NO_DYNAMIC_LIBRARY
if (!pHnd) {
errorString = QLibrary::tr("Cannot load library %1: %2").arg(fileName).arg(qdlerror());
}
if (pHnd) {
qualifiedFileName = attempt;
errorString.clear();
}
return (pHnd != 0);
}