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133 lines
5.1 KiB
Plaintext
133 lines
5.1 KiB
Plaintext
POCO C++ Libraries Windows CE Platform Notes
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AAAIntroduction
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!!!Introduction
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Starting with release 1.4.0 the POCO C++ Libraries can be used on
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Windows CE 6. Project files for Visual Studio 2008 are provided that
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support static and shared debug and release builds.
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The port should work for Windows CE 5 as well, however, this has not been tested.
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!!!Changing The Target In The Project Files
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The project files contain build configurations for the "Digi JumpStart (ARMV4I)"
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target. To use another target, the Visual Studio project and solution files
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must be changed accordingly. Note that the project files cannot be opened
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by Visual Studio unless the target referenced in the project and solution files is available.
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To change the project and solution files for your platform, replace
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all occurrences of the string "Digi JumpStart (ARMV4I)" with the name
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of your platform (e.g. "Windows Mobile 6 Professional SDK (ARMV4I)").
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This is best done with a text editor that supports global search/replace
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across an entire directory tree (solution and project files are plain text/xml
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files, so there's no risk breaking something).
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!!!Restrictions
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!!Poco::Environment
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Windows CE does not support environment variables.
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Therefore, Poco::Environment::get() and Poco::Environment::has() only support the
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following hardcoded "pseudo" environment variables:
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* TEMP
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* TMP
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* HOMEPATH
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* COMPUTERNAME
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* OS
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* NUMBER_OF_PROCESSORS
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* PROCESSOR_ARCHITECTURE
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Poco::Environment::set() always throws a Poco::NotImplementedException.
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!!Date/Time Support
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Some date/time features are implemented with the help of [[http://wcelibcex.sourceforge.net/ WCELIBCEX]].
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The library is statically included in the Foundation library to simplify the build process.
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However, it is also possible to use WCELIBCEX as a separate library if the Foundation project file is modified accordingly
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(by removing or excluding from build the WCELIBCEX folder and modifying the header file search path accordingly).
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The following functions from WCELIBCEX are used:
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* wceex_time()
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* wceex_localtime()
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* wceex_mktime()
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It should also be possible to use wcecompat instead of WCELIBCEX, as this library provides
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similar features. In this case, the calls to the wceex_* functions need to be replaced with
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the wcecompat counterparts. The affected files are Random.cpp, LocalDateTime.cpp,
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Timezone_WINCE.cpp and ThreadPool.cpp.
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To obtain the current date and time with millisecond resolution,
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the hack described in <http://community.opennetcf.com/articles/cf/archive/2007/11/20/getting-a-millisecond-resolution-datetime-under-windows-ce.aspx>
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is used. This means there will be a one second delay when starting up
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the application.
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!!Poco::Path
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Poco::Path::listRoots() returns the root directory ("\"), as well as all mounted storage devices
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(e.g., "\Hard Disk"), even if they are also present in the root directory.
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Poco::Path::current() and Poco::Path::home() always return the root directory.
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!!Poco::RWLock
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In the reader/writer lock implementation for Windows CE, writers always take precedence over readers.
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!!Poco::Process
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Launching a process with pipes for redirecting input/output is not supported.
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!!Poco::Util::ServerApplication
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Poco::Util::ServerApplication::waitForTerminationRequest(): CTRL-C does not work to shut down the application as
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it's not supported by the Windows CE console. The pkill utility supplied as part of the Util library
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samples can be used to terminate a process from the command line.
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!!Crypto and NetSSL
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Crypto and NetSSL_OpenSSL have not been tested yet. Project files are there, but they might need some adaptions depending on
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how OpenSSL has been built for the Windows CE target.
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!!Data
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Only the SQLite backend is currently supported.
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The SQLite engine in Data/SQLite is built without localtime support (SQLITE_OMIT_LOCALTIME) due to localtime_s() not being
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available on Windows CE.
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!!Raw Sockets in Net
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The test cases involving raw sockets will fail unless the testsuite is ran as a privileged (signed) application.
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These are RawSocketTest::testEchoIPv4(), RawSocketTest::testSendToReceiveFromIPv4() and ICMPClientTest::testPing().
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!!!Build Notes
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Optimization settings should be set as follows for release builds
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(<*Properties > Configuration Properties > C/C++ > Optimization*>):
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* Optimization: Custom
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* Inline Function Expansion: Default
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* Enable Intrinsic Functions: Yes (/Oi)
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* Floating-Point Consistency: Default Consistency
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* Favor Size or Speed: Favor Fast Code (/Ot)
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* Whole Program Optimization: No
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Other settings may or may not produce working programs.
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Specifically, setting <*Optimization*> to <*Maximize Speed (/O2)*> will result in failures in the
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test suite for Foundation Events due to a compiler optimizer bug.
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For shared/DLL builds, the /FORCE:MULTIPLE option is passed to the linker. This is
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to avoid a problem with iostream classes and their methods (template instantiations),
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which for some unknown reason (possibly bug) will be exported by the Foundation library
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(and others) and thus cause multiply defined symbol errors.
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The reference system used for testing is a Digi ConnectCore 9P 9360 running Windows CE 6.0.
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