Adds iOS files for crossplatform calculator example.

examples/cross_calculator/ios/scripts/tags.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+if [ ! -d src ]
+then
+	cd ..
+fi
+
+if [ -d src ]
+then
+	~/bin/objctags -R \
+		build/nimcache \
+		src
+fi

examples/cross_calculator/ios/scripts/xcode_prebuild.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+# Set this to the full path of your nimrod compiler
+# since Xcode doesn't inherit your user environment.
+PATH_TO_NIMROD=~/project/nimrod/bin/nimrod
+# Set this to the location of the nimbase.h file so
+# the script can update it if it changes.
+PATH_TO_NIMBASE=~/project/nimrod/lib/nimbase.h
+
+# Force errors to fail script.
+set -e
+
+# If we are running from inside the scripts subdir, get out.
+if [ ! -d src ]
+then
+	cd ..
+fi
+
+DEST_NIMBASE=build/nimcache/nimbase.h
+
+# Ok, are we out now?
+if [ -d src ]
+then
+	# You may want to use a wildcard here to compile all nimrod files.
+	$PATH_TO_NIMROD objc --noMain  --app:lib \
+		--nimcache:build/nimcache --compileOnly \
+		--header --cpu:i386 ../nimrod_backend/backend.nim
+	if [ "${PATH_TO_NIMBASE}" -nt "${DEST_NIMBASE}" ]
+	then
+		echo "Updating nimbase.h"
+		cp "${PATH_TO_NIMBASE}" "${DEST_NIMBASE}"
+	fi
+else
+	echo "Uh oh, src directory not found?"
+	exit 1
+fi