Building Qt Messaging Framework On Mac - macos

Question

I'm trying to build the latest version of the QMF from the Git sources on OS X 10.6 but I keep running into this error:
"QPrivatelyImplemented<QMailMessageBodyPrivate>::~QPrivatelyImplemented()", referenced from:
QMailMessageBody::~QMailMessageBody()in qmfstoragemanager.o
QMailMessageBody::~QMailMessageBody()in qmfstoragemanager.o
PartStorer::operator()(QMailMessagePart const&)in qmfstoragemanager.o
PartLoader::operator()(QMailMessagePart&)in qmfstoragemanager.o
"QPrivatelyImplemented<QMailMessageHeaderFieldPrivate>::~QPrivatelyImplemented()", referenced from:
QMailMessageContentType::~QMailMessageContentType()in qmfstoragemanager.o
QMailMessageContentType::~QMailMessageContentType()in qmfstoragemanager.o
ReferenceLoader::operator()(QMailMessagePart&)in qmfstoragemanager.o
PartLoader::operator()(QMailMessagePart&)in qmfstoragemanager.o
"QPrivatelyImplemented<QMailMessagePartContainerPrivate>::~QPrivatelyImplemented()", referenced from:
QMailMessage::~QMailMessage()in qmfstoragemanager.o
"QPrivatelyImplemented<QMailMessageMetaDataPrivate>::~QPrivatelyImplemented()", referenced from:
QMailMessage::~QMailMessage()in qmfstoragemanager.o
"QPrivatelyImplemented<QMailMessageMetaDataPrivate>::operator=(QPrivatelyImplemented<QMailMessageMetaDataPrivate> const&)", referenced from:
QmfStorageManager::load(QString const&, QMailMessage*) in qmfstoragemanager.o
"QPrivatelyImplemented<QMailMessagePartContainerPrivate>::operator=(QPrivatelyImplemented<QMailMessagePartContainerPrivate> const&)", referenced from:
QmfStorageManager::load(QString const&, QMailMessage*) in qmfstoragemanager.o
ld: symbol(s) not found for architecture x86_64
It does, however, compile flawlessly under Ubuntu and I'm near enough positive I've compiled it on OS X previous so I'm a bit puzzled, obvious symbols not found generally means there's some source code missing, anyone come across this before I start tearing it apart?

Answer 1

This error occurs because compiler omits unreferenced classes away from the library.
I was able to workaround this issue by adding the following code after all the explicit template instantiations (or just add it to the end of file) in src\libraries\qmfclient\qmailinstantiations.cpp:
class reference_holder
{
struct helper
{
helper(QPrivatelyImplemented<QMailMessageBodyPrivate>* = 0)
{
}
~helper()
{
}
};
static helper helper_;
static void use_helper()
{
(void)helper_;
}
template<void(*)()>
struct helper2 {};
static helper2<&reference_holder::use_helper> helper2_;
};