Introduce o3tl::optional as an alias for std::optional

...with a boost::optional fallback for Xcode < 10 (as std::optional is only
available starting with Xcode 10 according to
<https://en.cppreference.com/w/cpp/compiler_support>, and our baseline for iOS
and macOS is still Xcode 9.3 according to README.md).  And mechanically rewrite
all code to use o3tl::optional instead of boost::optional.

One immediate benefit is that disabling -Wmaybe-uninitialized for GCC as per
fed7c3deb3f4ec81f78967c2d7f3c4554398cb9d "Slience bogus
-Werror=maybe-uninitialized" should no longer be necessary (and whose check
happened to no longer trigger for GCC 10 trunk, even though that compiler would
still emit bogus -Wmaybe-uninitialized for uses of boost::optional under
--enable-optimized, which made me ponder whether this switch from
boost::optional to std::optional would be a useful thing to do; I keep that
configure.ac check for now, though, and will only remove it in a follow up
commit).

Another longer-term benefit is that the code is now already in good shape for an
eventual switch to std::optional (a switch we would have done anyway once we no
longer need to support Xcode < 10).

Only desktop/qa/desktop_lib/test_desktop_lib.cxx heavily uses
boost::property_tree::ptree::get_child_optional returning boost::optional, so
let it keep using boost::optional for now.

After a number of preceding commits have paved the way for this change, this
commit is completely mechanical, done with

> git ls-files -z | grep -vz -e '^bin/find-unneeded-includes$' -e '^configure.ac$' -e '^desktop/qa/desktop_lib/test_desktop_lib.cxx$' -e '^dictionaries$' -e '^external/' -e '^helpcontent2$' -e '^include/IwyuFilter_include.yaml$' -e '^sc/IwyuFilter_sc.yaml$' -e '^solenv/gdb/boost/optional.py$' -e '^solenv/vs/LibreOffice.natvis$' -e '^translations$' -e '\.svg$' | xargs -0 sed -i -E -e 's|\<boost(/optional)?/optional\.hpp\>|o3tl/optional.hxx|g' -e 's/\<boost(\s*)::(\s*)(make_)?optional\>/o3tl\1::\2\3optional/g' -e 's/\<boost(\s*)::(\s*)none\>/o3tl\1::\2nullopt/g'

(before committing include/o3tl/optional.hxx, and relying on some GNU features).
It excludes some files where mention of boost::optional et al should apparently
not be changed (and the sub-repo directory stubs).  It turned out that all uses
of boost::none across the code base were in combination with boost::optional, so
had all to be rewritten as o3tl::nullopt.

Change-Id: Ibfd9f4b3d5a8aee6e6eed310b988c4e5ffd8b11b
Reviewed-on: https://gerrit.libreoffice.org/84128
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

27 files changed, 85 insertions, 85 deletions

diff --git a/desktop/source/app/app.cxx b/desktop/source/app/app.cxx
index f448d6e7e507..4afbed28e6b3 100644
--- a/desktop/source/app/app.cxx
+++ b/desktop/source/app/app.cxx
@@ -2216,7 +2216,7 @@ void Desktop::OpenDefault()
 
 
 OUString GetURL_Impl(
-    const OUString& rName, boost::optional< OUString > const & cwdUrl )
+    const OUString& rName, o3tl::optional< OUString > const & cwdUrl )
 {
     // if rName is a vnd.sun.star.script URL do not attempt to parse it
     // as INetURLObj does not handle URLs there
diff --git a/desktop/source/app/cmdlineargs.cxx b/desktop/source/app/cmdlineargs.cxx
index c395e6d68a44..f66e8142849d 100644
--- a/desktop/source/app/cmdlineargs.cxx
+++ b/desktop/source/app/cmdlineargs.cxx
@@ -85,7 +85,7 @@ public:
         }
     }
 
-    virtual boost::optional< OUString > getCwdUrl() override { return m_cwdUrl; }
+    virtual o3tl::optional< OUString > getCwdUrl() override { return m_cwdUrl; }
 
     virtual bool next(OUString * argument) override {
         OSL_ASSERT(argument != nullptr);
@@ -98,7 +98,7 @@ public:
     }
 
 private:
-    boost::optional< OUString > m_cwdUrl;
+    o3tl::optional< OUString > m_cwdUrl;
     sal_uInt32 m_count;
     sal_uInt32 m_index;
 };
diff --git a/desktop/source/app/cmdlineargs.hxx b/desktop/source/app/cmdlineargs.hxx
index 94600ed40972..6c18bda3572d 100644
--- a/desktop/source/app/cmdlineargs.hxx
+++ b/desktop/source/app/cmdlineargs.hxx
@@ -25,7 +25,7 @@
 #include <vector>
 
 #include <rtl/ustring.hxx>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 namespace desktop
 {
@@ -46,7 +46,7 @@ class CommandLineArgs
             };
 
             virtual ~Supplier();
-            virtual boost::optional< OUString > getCwdUrl() = 0;
+            virtual o3tl::optional< OUString > getCwdUrl() = 0;
             virtual bool next(OUString * argument) = 0;
         };
 
@@ -56,7 +56,7 @@ class CommandLineArgs
         CommandLineArgs(const CommandLineArgs&) = delete;
         const CommandLineArgs& operator=(const CommandLineArgs&) = delete;
 
-        const boost::optional< OUString >& getCwdUrl() const { return m_cwdUrl; }
+        const o3tl::optional< OUString >& getCwdUrl() const { return m_cwdUrl; }
 
         // Access to bool parameters
         bool                IsMinimized() const { return m_minimized;}
@@ -127,7 +127,7 @@ class CommandLineArgs
         void                    ParseCommandLine_Impl( Supplier& supplier );
         void                    InitParamValues();
 
-        boost::optional< OUString > m_cwdUrl;
+        o3tl::optional< OUString > m_cwdUrl;
 
         bool m_minimized;
         bool m_invisible;
diff --git a/desktop/source/app/dispatchwatcher.hxx b/desktop/source/app/dispatchwatcher.hxx
index 2b683ffd08fb..103b882b9172 100644
--- a/desktop/source/app/dispatchwatcher.hxx
+++ b/desktop/source/app/dispatchwatcher.hxx
@@ -60,7 +60,7 @@ class DispatchWatcher : public ::cppu::WeakImplHelper< css::frame::XDispatchResu
         {
             RequestType aRequestType;
             OUString    aURL;
-            boost::optional< OUString > aCwdUrl;
+            o3tl::optional< OUString > aCwdUrl;
             OUString    aPrinterName;  // also conversion params
             OUString    aPreselectedFactory;
         };
diff --git a/desktop/source/app/officeipcthread.cxx b/desktop/source/app/officeipcthread.cxx
index 5a79206c96ee..04617652c76d 100644
--- a/desktop/source/app/officeipcthread.cxx
+++ b/desktop/source/app/officeipcthread.cxx
@@ -141,7 +141,7 @@ public:
         }
     }
 
-    virtual boost::optional< OUString > getCwdUrl() override { return m_cwdUrl; }
+    virtual o3tl::optional< OUString > getCwdUrl() override { return m_cwdUrl; }
 
     virtual bool next(OUString * argument) override { return next(argument, true); }
 
@@ -195,7 +195,7 @@ private:
         }
     }
 
-    boost::optional< OUString > m_cwdUrl;
+    o3tl::optional< OUString > m_cwdUrl;
     OString m_input;
     sal_Int32 m_index;
 };
@@ -671,7 +671,7 @@ void RequestHandler::EnableRequests()
             pGlobal->mState = State::RequestsEnabled;
         }
         // hit the compiler over the head
-        ProcessDocumentsRequest aEmptyReq { boost::optional< OUString >() };
+        ProcessDocumentsRequest aEmptyReq { o3tl::optional< OUString >() };
         // trigger already queued requests
         RequestHandler::ExecuteCmdLineRequests(aEmptyReq, true);
     }
@@ -1224,7 +1224,7 @@ void PipeIpcThread::execute()
 
 static void AddToDispatchList(
     std::vector<DispatchWatcher::DispatchRequest>& rDispatchList,
-    boost::optional< OUString > const & cwdUrl,
+    o3tl::optional< OUString > const & cwdUrl,
     std::vector< OUString > const & aRequestList,
     DispatchWatcher::RequestType nType,
     const OUString& aParam,
@@ -1238,7 +1238,7 @@ static void AddToDispatchList(
 
 static void AddConversionsToDispatchList(
     std::vector<DispatchWatcher::DispatchRequest>& rDispatchList,
-    boost::optional< OUString > const & cwdUrl,
+    o3tl::optional< OUString > const & cwdUrl,
     std::vector< OUString > const & rRequestList,
     const OUString& rParam,
     const OUString& rPrinterName,
diff --git a/desktop/source/app/officeipcthread.hxx b/desktop/source/app/officeipcthread.hxx
index ca2533e191b8..79b550e70768 100644
--- a/desktop/source/app/officeipcthread.hxx
+++ b/desktop/source/app/officeipcthread.hxx
@@ -34,7 +34,7 @@
 #include <cppuhelper/implbase.hxx>
 #include <osl/conditn.hxx>
 #include <salhelper/thread.hxx>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 namespace desktop
 {
@@ -45,10 +45,10 @@ oslSignalAction SalMainPipeExchangeSignal_impl(void* /*pData*/, oslSignalInfo* p
 // that was given by command line or by IPC pipe communication.
 struct ProcessDocumentsRequest
 {
-    explicit ProcessDocumentsRequest(boost::optional< OUString > const & cwdUrl):
+    explicit ProcessDocumentsRequest(o3tl::optional< OUString > const & cwdUrl):
         aCwdUrl(cwdUrl), pcProcessed( nullptr ), bTextCat( false ), bScriptCat( false ) {}
 
-    boost::optional< OUString > aCwdUrl;
+    o3tl::optional< OUString > aCwdUrl;
     OUString aModule;
     std::vector< OUString > aOpenList; // Documents that should be opened in the default way
     std::vector< OUString > aViewList; // Documents that should be opened in viewmode
diff --git a/desktop/source/app/opencl.cxx b/desktop/source/app/opencl.cxx
index 5ef73dd70cf9..766ac5011ab9 100644
--- a/desktop/source/app/opencl.cxx
+++ b/desktop/source/app/opencl.cxx
@@ -227,7 +227,7 @@ void Desktop::CheckOpenCLCompute(const Reference< XDesktop2 > &xDesktop)
     {
         // OpenCL device changed - sanity check it and disable if bad.
 
-        boost::optional<sal_Int32> nOrigMinimumSize = officecfg::Office::Calc::Formula::Calculation::OpenCLMinimumDataSize::get();
+        o3tl::optional<sal_Int32> nOrigMinimumSize = officecfg::Office::Calc::Formula::Calculation::OpenCLMinimumDataSize::get();
         { // set the minimum group size to something small for quick testing.
             std::shared_ptr<comphelper::ConfigurationChanges> xBatch(comphelper::ConfigurationChanges::create());
             officecfg::Office::Calc::Formula::Calculation::OpenCLMinimumDataSize::set(3 /* small */, xBatch);
diff --git a/desktop/source/deployment/dp_log.cxx b/desktop/source/deployment/dp_log.cxx
index 000dc46b347c..9f962f05a497 100644
--- a/desktop/source/deployment/dp_log.cxx
+++ b/desktop/source/deployment/dp_log.cxx
@@ -36,7 +36,7 @@
 #include <com/sun/star/io/IOException.hpp>
 #include <com/sun/star/io/XSeekable.hpp>
 #include <stdio.h>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 using namespace ::com::sun::star;
 using namespace ::com::sun::star::uno;
diff --git a/desktop/source/deployment/gui/dp_gui_service.cxx b/desktop/source/deployment/gui/dp_gui_service.cxx
index fbcb4ed13232..641ba623a534 100644
--- a/desktop/source/deployment/gui/dp_gui_service.cxx
+++ b/desktop/source/deployment/gui/dp_gui_service.cxx
@@ -36,7 +36,7 @@
 #include <com/sun/star/task/XJobExecutor.hpp>
 #include <com/sun/star/ui/dialogs/XAsynchronousExecutableDialog.hpp>
 
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include "license_dialog.hxx"
 #include "dp_gui_dialog2.hxx"
 #include "dp_gui_extensioncmdqueue.hxx"
@@ -143,8 +143,8 @@ class ServiceImpl
                                      task::XJobExecutor>
 {
     Reference<XComponentContext> const m_xComponentContext;
-    boost::optional< Reference<awt::XWindow> > /* const */ m_parent;
-    boost::optional<OUString> m_extensionURL;
+    o3tl::optional< Reference<awt::XWindow> > /* const */ m_parent;
+    o3tl::optional<OUString> m_extensionURL;
     OUString m_initialTitle;
     bool m_bShowUpdateOnly;
 
@@ -169,8 +169,8 @@ ServiceImpl::ServiceImpl( Sequence<Any> const& args,
       m_bShowUpdateOnly( false )
 {
     /* if true then this service is running in a unopkg process and not in an office process */
-    boost::optional<sal_Bool> unopkg;
-    boost::optional<OUString> view;
+    o3tl::optional<sal_Bool> unopkg;
+    o3tl::optional<OUString> view;
     try {
         comphelper::unwrapArgs( args, m_parent, view, unopkg );
         return;
diff --git a/desktop/source/deployment/gui/dp_gui_updatedialog.cxx b/desktop/source/deployment/gui/dp_gui_updatedialog.cxx
index c68fab086eaf..0dcbf641f3c0 100644
--- a/desktop/source/deployment/gui/dp_gui_updatedialog.cxx
+++ b/desktop/source/deployment/gui/dp_gui_updatedialog.cxx
@@ -27,7 +27,7 @@
 #include <vector>
 
 
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <com/sun/star/awt/Rectangle.hpp>
 #include <com/sun/star/awt/WindowAttribute.hpp>
 #include <com/sun/star/awt/WindowClass.hpp>
@@ -412,7 +412,7 @@ void UpdateDialog::Thread::prepareUpdateData(
         out_du.unsatisfiedDependencies[i] = dp_misc::Dependencies::getErrorText(ds[i]);
     }
 
-    const ::boost::optional< OUString> updateWebsiteURL(infoset.getLocalizedUpdateWebsiteURL());
+    const ::o3tl::optional< OUString> updateWebsiteURL(infoset.getLocalizedUpdateWebsiteURL());
 
     out_du.name = getUpdateDisplayString(out_data, infoset.getVersion());
 
@@ -841,7 +841,7 @@ bool UpdateDialog::isIgnoredUpdate( UpdateDialog::Index * index )
         {
             DisabledUpdate &rData = m_disabledUpdates[ index->m_nIndex ];
             dp_misc::DescriptionInfoset aInfoset( m_context, rData.aUpdateInfo );
-            ::boost::optional< OUString > aID( aInfoset.getIdentifier() );
+            ::o3tl::optional< OUString > aID( aInfoset.getIdentifier() );
             if ( aID )
                 aExtensionID = *aID;
             aVersion = aInfoset.getVersion();
diff --git a/desktop/source/deployment/inc/dp_descriptioninfoset.hxx b/desktop/source/deployment/inc/dp_descriptioninfoset.hxx
index 9608a75215a7..03a5ededfeca 100644
--- a/desktop/source/deployment/inc/dp_descriptioninfoset.hxx
+++ b/desktop/source/deployment/inc/dp_descriptioninfoset.hxx
@@ -22,7 +22,7 @@
 
 #include <sal/config.h>
 
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <com/sun/star/uno/Reference.hxx>
 #include <com/sun/star/uno/Sequence.hxx>
 #include <sal/types.h>
@@ -83,7 +83,7 @@ public:
        @return
        the identifier, or an empty <code>optional</code> if none is specified
     */
-    ::boost::optional< OUString > getIdentifier() const;
+    ::o3tl::optional< OUString > getIdentifier() const;
 
     /**
        Return the textual version representation.
@@ -135,7 +135,7 @@ public:
         As long as there is a simple-license element, the function will return
         the structure. If it does not exist, then the optional object is uninitialized.
     */
-    ::boost::optional<SimpleLicenseAttributes> getSimpleLicenseAttributes() const;
+    ::o3tl::optional<SimpleLicenseAttributes> getSimpleLicenseAttributes() const;
 
     /** returns the localized display name of the extensions.
 
@@ -162,7 +162,7 @@ public:
         the download website URL, or an empty <code>optional</code> if none is
         specified
     */
-    ::boost::optional< OUString > getLocalizedUpdateWebsiteURL() const;
+    ::o3tl::optional< OUString > getLocalizedUpdateWebsiteURL() const;
 
     /** returns the relative URL to the description.
 
@@ -206,7 +206,7 @@ public:
     bool hasDescription() const;
 
 private:
-    SAL_DLLPRIVATE ::boost::optional< OUString > getOptionalValue(
+    SAL_DLLPRIVATE ::o3tl::optional< OUString > getOptionalValue(
         OUString const & expression) const;
 
     SAL_DLLPRIVATE css::uno::Sequence< OUString > getUrls(
diff --git a/desktop/source/deployment/inc/dp_identifier.hxx b/desktop/source/deployment/inc/dp_identifier.hxx
index 16d95c57baf9..a7ce629f42ff 100644
--- a/desktop/source/deployment/inc/dp_identifier.hxx
+++ b/desktop/source/deployment/inc/dp_identifier.hxx
@@ -22,7 +22,7 @@
 
 #include <sal/config.h>
 
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <com/sun/star/uno/Reference.hxx>
 
 #include "dp_misc_api.hxx"
@@ -47,7 +47,7 @@ namespace dp_misc {
    on the given file name
 */
 DESKTOP_DEPLOYMENTMISC_DLLPUBLIC OUString generateIdentifier(
-    ::boost::optional< OUString > const & optional,
+    ::o3tl::optional< OUString > const & optional,
     OUString const & fileName);
 
 /**
diff --git a/desktop/source/deployment/manager/dp_extensionmanager.cxx b/desktop/source/deployment/manager/dp_extensionmanager.cxx
index fae8afe53e62..e99dbda3454d 100644
--- a/desktop/source/deployment/manager/dp_extensionmanager.cxx
+++ b/desktop/source/deployment/manager/dp_extensionmanager.cxx
@@ -560,7 +560,7 @@ bool ExtensionManager::doChecksForAddExtension(
         ExtensionProperties props(OUString(), properties, Reference<ucb::XCommandEnvironment>(), m_xContext);
 
         dp_misc::DescriptionInfoset info(dp_misc::getDescriptionInfoset(xTmpExtension->getURL()));
-        const ::boost::optional<dp_misc::SimpleLicenseAttributes> licenseAttributes =
+        const ::o3tl::optional<dp_misc::SimpleLicenseAttributes> licenseAttributes =
             info.getSimpleLicenseAttributes();
 
         if (licenseAttributes && licenseAttributes->suppressIfRequired
diff --git a/desktop/source/deployment/manager/dp_manager.cxx b/desktop/source/deployment/manager/dp_manager.cxx
index 7c79ab43405e..be7150588485 100644
--- a/desktop/source/deployment/manager/dp_manager.cxx
+++ b/desktop/source/deployment/manager/dp_manager.cxx
@@ -1391,7 +1391,7 @@ bool PackageManagerImpl::synchronizeAddedExtensions(
                     // shall the license be suppressed?
                     DescriptionInfoset info =
                         dp_misc::getDescriptionInfoset(url);
-                    ::boost::optional<dp_misc::SimpleLicenseAttributes>
+                    ::o3tl::optional<dp_misc::SimpleLicenseAttributes>
                           attr = info.getSimpleLicenseAttributes();
                     ExtensionProperties props(url, xCmdEnv, m_xComponentContext);
                     bool bNoLicense = false;
diff --git a/desktop/source/deployment/manager/dp_properties.hxx b/desktop/source/deployment/manager/dp_properties.hxx
index f6edd8476629..cc4bd931df34 100644
--- a/desktop/source/deployment/manager/dp_properties.hxx
+++ b/desktop/source/deployment/manager/dp_properties.hxx
@@ -23,7 +23,7 @@
 
 #include <com/sun/star/beans/NamedValue.hpp>
 #include <com/sun/star/ucb/XCommandEnvironment.hpp>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 
 namespace dp_manager {
@@ -34,8 +34,8 @@ class ExtensionProperties final
     OUString m_propFileUrl;
     const css::uno::Reference<css::ucb::XCommandEnvironment> m_xCmdEnv;
     const css::uno::Reference<css::uno::XComponentContext> m_xContext;
-    ::boost::optional< OUString> m_prop_suppress_license;
-    ::boost::optional< OUString> m_prop_extension_update;
+    ::o3tl::optional< OUString> m_prop_suppress_license;
+    ::o3tl::optional< OUString> m_prop_extension_update;
 
     static OUString getPropertyValue(css::beans::NamedValue const & v);
 public:
diff --git a/desktop/source/deployment/misc/dp_descriptioninfoset.cxx b/desktop/source/deployment/misc/dp_descriptioninfoset.cxx
index 3e10663ef8db..585fcec13224 100644
--- a/desktop/source/deployment/misc/dp_descriptioninfoset.cxx
+++ b/desktop/source/deployment/misc/dp_descriptioninfoset.cxx
@@ -26,7 +26,7 @@
 #include <comphelper/seqstream.hxx>
 #include <comphelper/processfactory.hxx>
 #include <comphelper/propertysequence.hxx>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <com/sun/star/configuration/theDefaultProvider.hpp>
 #include <com/sun/star/container/XNameAccess.hpp>
 #include <com/sun/star/deployment/DeploymentException.hpp>
@@ -327,7 +327,7 @@ DescriptionInfoset::DescriptionInfoset(
 
 DescriptionInfoset::~DescriptionInfoset() {}
 
-::boost::optional< OUString > DescriptionInfoset::getIdentifier() const {
+::o3tl::optional< OUString > DescriptionInfoset::getIdentifier() const {
     return getOptionalValue("desc:identifier/@value");
 }
 
@@ -347,7 +347,7 @@ OUString DescriptionInfoset::getNodeValueFromExpression(OUString const & express
 void DescriptionInfoset::checkBlacklist() const
 {
     if (m_element.is()) {
-        boost::optional< OUString > id(getIdentifier());
+        o3tl::optional< OUString > id(getIdentifier());
         if (!id)
             return; // nothing to check
         OUString currentversion(getVersion());
@@ -521,20 +521,20 @@ OUString DescriptionInfoset::getIconURL( bool bHighContrast ) const
     return OUString();
 }
 
-::boost::optional< OUString > DescriptionInfoset::getLocalizedUpdateWebsiteURL()
+::o3tl::optional< OUString > DescriptionInfoset::getLocalizedUpdateWebsiteURL()
     const
 {
     bool bParentExists = false;
     const OUString sURL (getLocalizedHREFAttrFromChild("/desc:description/desc:update-website", &bParentExists ));
 
     if (!sURL.isEmpty())
-        return ::boost::optional< OUString >(sURL);
+        return ::o3tl::optional< OUString >(sURL);
     else
-        return bParentExists ? ::boost::optional< OUString >(OUString()) :
-            ::boost::optional< OUString >();
+        return bParentExists ? ::o3tl::optional< OUString >(OUString()) :
+            ::o3tl::optional< OUString >();
 }
 
-::boost::optional< OUString > DescriptionInfoset::getOptionalValue(
+::o3tl::optional< OUString > DescriptionInfoset::getOptionalValue(
     OUString const & expression) const
 {
     css::uno::Reference< css::xml::dom::XNode > n;
@@ -546,8 +546,8 @@ OUString DescriptionInfoset::getIconURL( bool bHighContrast ) const
         }
     }
     return n.is()
-        ? ::boost::optional< OUString >(getNodeValue(n))
-        : ::boost::optional< OUString >();
+        ? ::o3tl::optional< OUString >(getNodeValue(n))
+        : ::o3tl::optional< OUString >();
 }
 
 css::uno::Sequence< OUString > DescriptionInfoset::getUrls(
@@ -632,7 +632,7 @@ OUString DescriptionInfoset::getLocalizedLicenseURL() const
 
 }
 
-::boost::optional<SimpleLicenseAttributes>
+::o3tl::optional<SimpleLicenseAttributes>
 DescriptionInfoset::getSimpleLicenseAttributes() const
 {
     //Check if the node exist
@@ -649,22 +649,22 @@ DescriptionInfoset::getSimpleLicenseAttributes() const
             attributes.acceptBy =
                 getNodeValueFromExpression("/desc:description/desc:registration/desc:simple-license/@accept-by");
 
-            ::boost::optional< OUString > suppressOnUpdate = getOptionalValue("/desc:description/desc:registration/desc:simple-license/@suppress-on-update");
+            ::o3tl::optional< OUString > suppressOnUpdate = getOptionalValue("/desc:description/desc:registration/desc:simple-license/@suppress-on-update");
             if (suppressOnUpdate)
                 attributes.suppressOnUpdate = (*suppressOnUpdate).trim().equalsIgnoreAsciiCase("true");
             else
                 attributes.suppressOnUpdate = false;
 
-            ::boost::optional< OUString > suppressIfRequired = getOptionalValue("/desc:description/desc:registration/desc:simple-license/@suppress-if-required");
+            ::o3tl::optional< OUString > suppressIfRequired = getOptionalValue("/desc:description/desc:registration/desc:simple-license/@suppress-if-required");
             if (suppressIfRequired)
                 attributes.suppressIfRequired = (*suppressIfRequired).trim().equalsIgnoreAsciiCase("true");
             else
                 attributes.suppressIfRequired = false;
 
-            return ::boost::optional<SimpleLicenseAttributes>(attributes);
+            return ::o3tl::optional<SimpleLicenseAttributes>(attributes);
         }
     }
-    return ::boost::optional<SimpleLicenseAttributes>();
+    return ::o3tl::optional<SimpleLicenseAttributes>();
 }
 
 OUString DescriptionInfoset::getLocalizedDescriptionURL() const
diff --git a/desktop/source/deployment/misc/dp_identifier.cxx b/desktop/source/deployment/misc/dp_identifier.cxx
index bb90b8bb0d2f..7f07b5362bda 100644
--- a/desktop/source/deployment/misc/dp_identifier.cxx
+++ b/desktop/source/deployment/misc/dp_identifier.cxx
@@ -20,7 +20,7 @@
 
 #include <sal/config.h>
 
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <com/sun/star/beans/Optional.hpp>
 #include <com/sun/star/deployment/XPackage.hpp>
 #include <com/sun/star/uno/Reference.hxx>
@@ -34,7 +34,7 @@
 namespace dp_misc {
 
 OUString generateIdentifier(
-    ::boost::optional< OUString > const & optional,
+    ::o3tl::optional< OUString > const & optional,
     OUString const & fileName)
 {
     return optional ? *optional : generateLegacyIdentifier(fileName);
diff --git a/desktop/source/deployment/misc/dp_update.cxx b/desktop/source/deployment/misc/dp_update.cxx
index 38b37d1da873..1387ad015ae6 100644
--- a/desktop/source/deployment/misc/dp_update.cxx
+++ b/desktop/source/deployment/misc/dp_update.cxx
@@ -112,7 +112,7 @@ void getOwnUpdateInfos(
                     Reference< xml::dom::XNode >(infos[j], UNO_QUERY_THROW));
                 if (!infoset.hasDescription())
                     continue;
-                boost::optional< OUString > result_id(infoset.getIdentifier());
+                o3tl::optional< OUString > result_id(infoset.getIdentifier());
                 if (!result_id)
                     continue;
                 SAL_INFO( "extensions.update", "  found version "
@@ -153,7 +153,7 @@ void getDefaultUpdateInfos(
     {
         Reference< xml::dom::XNode > node(infos[i], UNO_QUERY_THROW);
         dp_misc::DescriptionInfoset infoset(xContext, node);
-        boost::optional< OUString > id(infoset.getIdentifier());
+        o3tl::optional< OUString > id(infoset.getIdentifier());
         if (!id) {
             continue;
         }
diff --git a/desktop/source/deployment/registry/configuration/dp_configuration.cxx b/desktop/source/deployment/registry/configuration/dp_configuration.cxx
index 40d0ee9c8b3c..fb00877fb276 100644
--- a/desktop/source/deployment/registry/configuration/dp_configuration.cxx
+++ b/desktop/source/deployment/registry/configuration/dp_configuration.cxx
@@ -137,7 +137,7 @@ class BackendImpl : public ::dp_registry::backend::PackageRegistryBackend
                           Reference<XCommandEnvironment> const & xCmdEnv );
 #endif
     void addDataToDb(OUString const & url, ConfigurationBackendDb::Data const & data);
-    ::boost::optional<ConfigurationBackendDb::Data> readDataFromDb(OUString const & url);
+    ::o3tl::optional<ConfigurationBackendDb::Data> readDataFromDb(OUString const & url);
     void revokeEntryFromDb(OUString const & url);
     bool hasActiveEntry(OUString const & url);
     bool activateEntry(OUString const & url);
@@ -247,10 +247,10 @@ void BackendImpl::addDataToDb(
         m_backendDb->addEntry(url, data);
 }
 
-::boost::optional<ConfigurationBackendDb::Data> BackendImpl::readDataFromDb(
+::o3tl::optional<ConfigurationBackendDb::Data> BackendImpl::readDataFromDb(
     OUString const & url)
 {
-    ::boost::optional<ConfigurationBackendDb::Data> data;
+    ::o3tl::optional<ConfigurationBackendDb::Data> data;
     if (m_backendDb)
         data = m_backendDb->getEntry(url);
     return data;
@@ -495,7 +495,7 @@ bool BackendImpl::removeFromConfigmgrIni(
         //url to the file in the user installation (e.g. $BUNDLED_EXTENSIONS_USER)
         //However, m_url (getURL()) contains the URL for the file in the actual
         //extension installation.
-        ::boost::optional<ConfigurationBackendDb::Data> data = readDataFromDb(url_);
+        ::o3tl::optional<ConfigurationBackendDb::Data> data = readDataFromDb(url_);
         if (data)
             i = std::find(rSet.begin(), rSet.end(), data->iniEntry);
     }
@@ -687,7 +687,7 @@ void BackendImpl::PackageImpl::processPackage_(
     {
         if (getMyBackend()->activateEntry(getURL()))
         {
-            ::boost::optional<ConfigurationBackendDb::Data> data = that->readDataFromDb(url);
+            ::o3tl::optional<ConfigurationBackendDb::Data> data = that->readDataFromDb(url);
             OSL_ASSERT(data);
             that->addToConfigmgrIni( m_isSchema, false, data->iniEntry, xCmdEnv );
         }
@@ -779,7 +779,7 @@ void BackendImpl::PackageImpl::processPackage_(
             }
         }
 #endif
-        ::boost::optional<ConfigurationBackendDb::Data> data = that->readDataFromDb(url);
+        ::o3tl::optional<ConfigurationBackendDb::Data> data = that->readDataFromDb(url);
         //If an xcu file was life deployed then always a data entry is written.
         //If the xcu file was already in the configmr.ini then there is also
         //a data entry
diff --git a/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.cxx b/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.cxx
index 68a1f009d0bc..ba8159775639 100644
--- a/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.cxx
+++ b/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.cxx
@@ -96,7 +96,7 @@ void ConfigurationBackendDb::addEntry(OUString const & url, Data const & data)
 }
 
 
-::boost::optional<ConfigurationBackendDb::Data>
+::o3tl::optional<ConfigurationBackendDb::Data>
 ConfigurationBackendDb::getEntry(OUString const & url)
 {
     try
@@ -110,9 +110,9 @@ ConfigurationBackendDb::getEntry(OUString const & url)
         }
         else
         {
-            return ::boost::optional<Data>();
+            return ::o3tl::optional<Data>();
         }
-        return ::boost::optional<Data>(retData);
+        return ::o3tl::optional<Data>(retData);
     }
     catch ( const css::deployment::DeploymentException& )
     {
diff --git a/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.hxx b/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.hxx
index 09cbf05a9d3d..0e0d4c4899cf 100644
--- a/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.hxx
+++ b/desktop/source/deployment/registry/configuration/dp_configurationbackenddb.hxx
@@ -23,7 +23,7 @@
 #include <rtl/ustring.hxx>
 #include <rtl/string.hxx>
 #include <vector>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <dp_backenddb.hxx>
 
 namespace com { namespace sun { namespace star {
@@ -69,7 +69,7 @@ public:
 
     void addEntry(OUString const & url, Data const & data);
 
-    ::boost::optional<Data> getEntry(OUString const & url);
+    ::o3tl::optional<Data> getEntry(OUString const & url);
     std::vector< OUString> getAllDataUrls();
 };
 
diff --git a/desktop/source/deployment/registry/dp_backend.cxx b/desktop/source/deployment/registry/dp_backend.cxx
index 5c7b9bd1f2e3..bdab16126453 100644
--- a/desktop/source/deployment/registry/dp_backend.cxx
+++ b/desktop/source/deployment/registry/dp_backend.cxx
@@ -46,7 +46,7 @@
 #include <com/sun/star/sdbc/XRow.hpp>
 #include <tools/diagnose_ex.h>
 #include <unotools/tempfile.hxx>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 using namespace ::dp_misc;
 using namespace ::com::sun::star;
@@ -83,8 +83,8 @@ PackageRegistryBackend::PackageRegistryBackend(
       m_eContext( Context::Unknown )
 {
     assert(xContext.is());
-    boost::optional<OUString> cachePath;
-    boost::optional<bool> readOnly;
+    o3tl::optional<OUString> cachePath;
+    o3tl::optional<bool> readOnly;
     comphelper::unwrapArgs( args, m_context, cachePath, readOnly );
     if (cachePath)
         m_cachePath = *cachePath;
diff --git a/desktop/source/deployment/registry/help/dp_help.cxx b/desktop/source/deployment/registry/help/dp_help.cxx
index 5d2541ab0f3a..cba0ac01d7a7 100644
--- a/desktop/source/deployment/registry/help/dp_help.cxx
+++ b/desktop/source/deployment/registry/help/dp_help.cxx
@@ -42,7 +42,7 @@
 #include <com/sun/star/deployment/ExtensionRemovedException.hpp>
 #include <com/sun/star/ucb/SimpleFileAccess.hpp>
 #include <com/sun/star/util/XMacroExpander.hpp>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 using namespace ::dp_misc;
 using namespace ::com::sun::star;
@@ -99,7 +99,7 @@ class BackendImpl : public ::dp_registry::backend::PackageRegistryBackend
     void implCollectXhpFiles( const OUString& aDir,
         std::vector< OUString >& o_rXhpFileVector );
 
-    ::boost::optional<HelpBackendDb::Data> readDataFromDb(OUString const & url);
+    ::o3tl::optional<HelpBackendDb::Data> readDataFromDb(OUString const & url);
     bool hasActiveEntry(OUString const & url);
     bool activateEntry(OUString const & url);
 
@@ -204,10 +204,10 @@ Reference<deployment::XPackage> BackendImpl::bindPackage_(
         static_cast<sal_Int16>(-1) );
 }
 
-::boost::optional<HelpBackendDb::Data> BackendImpl::readDataFromDb(
+::o3tl::optional<HelpBackendDb::Data> BackendImpl::readDataFromDb(
     OUString const & url)
 {
-    ::boost::optional<HelpBackendDb::Data> data;
+    ::o3tl::optional<HelpBackendDb::Data> data;
     if (m_backendDb)
         data = m_backendDb->getEntry(url);
     return data;
@@ -337,7 +337,7 @@ beans::Optional< OUString > BackendImpl::PackageImpl::getRegistrationDataURL()
     if (m_bRemoved)
         throw deployment::ExtensionRemovedException();
 
-    ::boost::optional<HelpBackendDb::Data> data =
+    ::o3tl::optional<HelpBackendDb::Data> data =
           getMyBackend()->readDataFromDb(getURL());
 
     if (data && getMyBackend()->hasActiveEntry(getURL()))
diff --git a/desktop/source/deployment/registry/help/dp_helpbackenddb.cxx b/desktop/source/deployment/registry/help/dp_helpbackenddb.cxx
index 59867dd54767..7f9f7095be85 100644
--- a/desktop/source/deployment/registry/help/dp_helpbackenddb.cxx
+++ b/desktop/source/deployment/registry/help/dp_helpbackenddb.cxx
@@ -94,7 +94,7 @@ void HelpBackendDb::addEntry(OUString const & url, Data const & data)
 }
 
 
-::boost::optional<HelpBackendDb::Data>
+::o3tl::optional<HelpBackendDb::Data>
 HelpBackendDb::getEntry(OUString const & url)
 {
     try
@@ -107,9 +107,9 @@ HelpBackendDb::getEntry(OUString const & url)
         }
         else
         {
-            return ::boost::optional<Data>();
+            return ::o3tl::optional<Data>();
         }
-        return ::boost::optional<Data>(retData);
+        return ::o3tl::optional<Data>(retData);
     }
     catch ( const css::deployment::DeploymentException& )
     {
diff --git a/desktop/source/deployment/registry/help/dp_helpbackenddb.hxx b/desktop/source/deployment/registry/help/dp_helpbackenddb.hxx
index ad030ee60f58..1a9eabc861aa 100644
--- a/desktop/source/deployment/registry/help/dp_helpbackenddb.hxx
+++ b/desktop/source/deployment/registry/help/dp_helpbackenddb.hxx
@@ -21,7 +21,7 @@
 #define INCLUDED_DESKTOP_SOURCE_DEPLOYMENT_REGISTRY_HELP_DP_HELPBACKENDDB_HXX
 
 #include <rtl/ustring.hxx>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <dp_backenddb.hxx>
 
 namespace com { namespace sun { namespace star {
@@ -64,7 +64,7 @@ public:
 
     void addEntry(OUString const & url, Data const & data);
 
-    ::boost::optional<Data> getEntry(OUString const & url);
+    ::o3tl::optional<Data> getEntry(OUString const & url);
     //must also return the data urls for entries with @active="false". That is,
     //those are currently revoked.
     std::vector< OUString> getAllDataUrls();
diff --git a/desktop/source/deployment/registry/package/dp_package.cxx b/desktop/source/deployment/registry/package/dp_package.cxx
index 712742ed93c5..4ae501fdd948 100644
--- a/desktop/source/deployment/registry/package/dp_package.cxx
+++ b/desktop/source/deployment/registry/package/dp_package.cxx
@@ -68,7 +68,7 @@
 #include <com/sun/star/xml/dom/XDocumentBuilder.hpp>
 #include <com/sun/star/xml/xpath/XXPathAPI.hpp>
 #include <com/sun/star/deployment/XPackageManager.hpp>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 #include <tools/diagnose_ex.h>
 
 #include <algorithm>
@@ -628,7 +628,7 @@ bool BackendImpl::PackageImpl::checkLicense(
 {
     try
     {
-        ::boost::optional<SimpleLicenseAttributes> simplLicAttr
+        ::o3tl::optional<SimpleLicenseAttributes> simplLicAttr
             = info.getSimpleLicenseAttributes();
         if (! simplLicAttr)
             return true;
@@ -951,7 +951,7 @@ OUString BackendImpl::PackageImpl::getLicenseText()
     OUString sLicense;
     DescriptionInfoset aInfo = getDescriptionInfoset();
 
-    ::boost::optional< SimpleLicenseAttributes > aSimplLicAttr = aInfo.getSimpleLicenseAttributes();
+    ::o3tl::optional< SimpleLicenseAttributes > aSimplLicAttr = aInfo.getSimpleLicenseAttributes();
     if ( aSimplLicAttr )
     {
         OUString aLicenseURL = aInfo.getLocalizedLicenseURL();
diff --git a/desktop/source/deployment/registry/script/dp_scriptbackenddb.hxx b/desktop/source/deployment/registry/script/dp_scriptbackenddb.hxx
index 2136e4454a87..a6de29ffb0b2 100644
--- a/desktop/source/deployment/registry/script/dp_scriptbackenddb.hxx
+++ b/desktop/source/deployment/registry/script/dp_scriptbackenddb.hxx
@@ -22,7 +22,7 @@
 
 #include <rtl/ustring.hxx>
 #include <dp_backenddb.hxx>
-#include <boost/optional.hpp>
+#include <o3tl/optional.hxx>
 
 namespace com { namespace sun { namespace star {
         namespace uno {