Update ios/README

    - instructions how to build POCO
    - fixes the changes made since

Change-Id: I157d23ce914b8afb06ccf6e6c33f8aa12661d1bb

ios/README

@@ -13,24 +13,56 @@ cross-compiling LibreOffice.) Of course there is no requirement to use
 those --enable options; as a minimum, just
 --with-distro=LibreOfficeiOS should work.
 
+for use with the SIMULATOR you can use:
+--with-distro=LibreOfficeiOS_Sim
+
+Debug is implied when compiling for use in the simulator, but if you
+don't want that, then edit "distro-configs/LibreOfficeiOS_Sim.conf"
+
 This will produce a large number of static archives (.a) here and
 there in instdir and workdir, but no app that can be run as such. (You
 can see a list of them in
 workdir/CustomTarget/ios/ios-all-static-libs.list)
 
-2) Do a separate clone of the online repo on macOS, but don't do any
+2) Build LOOL Dependencies
+
+POCO LIBRARY
+
+2.1) Get the source poco library at https://pocoproject.org/download.html
+2.2) Unpack
+
+2.3a) Compile for DEVICE (arm64) use:
+./configure --config=iPhone --static --no-tests --no-samples --omit=Data/ODBC,Data/MySQL --prefix=$HOME/poco-ios-arm64
+make POCO_TARGET_OSARCH=arm64 -s -j4
+make POCO_TARGET_OSARCH=arm64 install
+
+2.3b) Compile for SIMULATOR (x86_64) use:
+./configure --config=iPhoneSimulator --static --no-tests --no-samples --omit=Data/ODBC,Data/MySQL --prefix=$HOME/poco-ios-x64
+make POCO_TARGET_OSARCH=x86_64 -s -j4
+make POCO_TARGET_OSARCH=x86_64 install
+
+This will install the poco static libraries and headers to your $home
+directory into poco-ios-arm64 (and poco-ios-x64) directory. You can
+change the directory to your wishes, but by installing it this way into
+a directory in $HOME it doesn't polute your root directories, doesn't
+need root permissions and can be removed easily.
+
+If compiler can't find <string.h> you need to install:
+open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
+
+3) Do a separate clone of the online repo on macOS, but don't do any
 autogen.sh, configure, or make, or open the Mobile Xcode project there
 yet. We call this the app folder.
 
-3) Here the instructions split. tml uses the first way, mmeeks tried
+4) Here the instructions split. tml uses the first way, mmeeks tried
 to use the second way. The paths will join again at step 4.
 
 EITHER:
 
-3a) On a Linux machine: Do a separate clone of the online repo, run
+4a) On a Linux machine: Do a separate clone of the online repo, run
 autogen.sh, and configure it with the --enable-iosapp option:
 
-./configure --enable-iosapp --with-iosapp-name="My Own Mobile LibreOffice"
+./configure --enable-iosapp --with-app-name="My Own Mobile LibreOffice"
 
 Then run make. That will produce files in loleaflet/dist, nothing
 else. Copy those to the corresponding folder in the app folder from
@@ -62,7 +94,7 @@ PATH=/opt/libtool/bin:$PATH ./autogen.sh
 
 OR:
 
-3b) Install brew: https://brew.sh/
+4b) Install brew: https://brew.sh/
 
    Then:
 
@@ -78,25 +110,29 @@ Then run:
 
 Now the instructions join again:
 
-4) In the app folder from step 2, edit the
+5) In the app folder from step 2, edit the
 ios/Mobile.xcodeproj/project.pbxproj file in your favourite text
 editor. Change LOSRCDIR and all instances of "../ios-device" to refer
 the the LibreOffice core source directory from step 1.
 
-5) In the app folder, run:
+6) In the app folder, run:
+
+for DEVICE:
+./configure --enable-iosapp --with-app-name="My Own Mobile LibreOffice" --with-lo-builddir=$HOME/lode/dev/LO --with-poco-includes=$HOME/poco-ios-arm64/include --with-poco-libs=$HOME/poco-ios-arm64/lib
 
-./configure --enable-iosapp --with-iosapp-name="My Own Mobile LibreOffice" --with-lo-builddir=$HOME/lo/ios --with-poco-includes=/opt/ios-poco/include --with-poco-libs=/opt/ios-poco/lib
+for SIMULATOR:
+./configure --enable-iosapp --with-app-name="My Own Mobile LibreOffice" --with-lo-builddir=$HOME/lode/dev/LO --with-poco-includes=$HOME/poco-ios-x64/include --with-poco-libs=$HOME/poco-ios-x64/lib
 
 The configure script puts the app name as the CFBundleDisplayName
 property into the ios/Mobile/Info.plist file, and sets up some
 symbolic links that point to the LibreOffice core source and build
 directories (which typically will be the same, of course).
 
-6) Before opening the Xcode project for the first time
+7) Before opening the Xcode project for the first time
    - seriously consider disabling source code indexing, this
    spawns a vast number of git processes, and consumes huge
    amounts of CPU & memory:
 
 	Xcode -> Preferences, "Source Control", uncheck "Enable Source Control"
 
-7) Now you can open the Mobile Xcode project, build it, and run it.
+8) Now you can open the Mobile Xcode project, build it, and run it.