Externals: add hidapi

Current master (d17db57b9d4354752e0af42f5f33007a42ef2906) because
Android support was added after the current release (0.8.0-rc1).

Externals/hidapi/testgui/copy_to_bundle.sh

@@ -0,0 +1,97 @@
+#!/bin/bash
+
+#### Configuration:
+# The name of the executable. It is assumed
+# that it is in the current working directory.
+EXE_NAME=hidapi-testgui
+# Path to the executable directory inside the bundle.
+# This must be an absolute path, so use $PWD.
+EXEPATH=$PWD/TestGUI.app/Contents/MacOS
+# Libraries to explicitly bundle, even though they
+# may not be in /opt/local. One per line. These
+# are used with grep, so only a portion of the name
+# is required. eg: libFOX, libz, etc.
+LIBS_TO_BUNDLE=libFOX
+
+
+function copydeps {
+	local file=$1
+	# echo "Copying deps for $file...."
+	local BASE_OF_EXE=`basename $file`
+
+	# A will contain the dependencies of this library
+	local A=`otool -LX $file |cut -f 1 -d " "`
+	local i
+	for i in $A; do
+		local BASE=`basename $i`
+
+		# See if it's a lib we specifically want to bundle
+		local bundle_this_lib=0
+		local j
+		for j in $LIBS_TO_BUNDLE; do
+			echo $i |grep -q $j
+			if [ $? -eq 0 ]; then
+				bundle_this_lib=1
+				echo "bundling $i because it's in the list."
+				break;
+			fi
+		done
+
+		# See if it's in /opt/local. Bundle all in /opt/local
+		local isOptLocal=0
+		echo $i |grep -q /opt/local
+		if [ $? -eq 0 ]; then
+			isOptLocal=1
+			echo "bundling $i because it's in /opt/local."
+		fi
+		
+		# Bundle the library
+		if [ $isOptLocal -ne 0 ] || [ $bundle_this_lib -ne 0 ]; then
+
+			# Copy the file into the bundle if it exists.
+			if [ -f $EXEPATH/$BASE ]; then
+				z=0
+			else
+				cp $i $EXEPATH
+				chmod 755 $EXEPATH/$BASE
+			fi
+			
+			
+			# echo "$BASE_OF_EXE depends on $BASE"
+			
+			# Fix the paths using install_name_tool and then
+			# call this function recursively for each dependency
+			# of this library. 
+			if [ $BASE_OF_EXE != $BASE ]; then
+			
+				# Fix the paths
+				install_name_tool -id @executable_path/$BASE $EXEPATH/$BASE
+				install_name_tool -change $i @executable_path/$BASE $EXEPATH/$BASE_OF_EXE
+
+				# Call this function (recursive) on
+				# on each dependency of this library.
+				copydeps $EXEPATH/$BASE
+			fi
+		fi
+	done
+}
+
+rm -f $EXEPATH/*
+
+# Copy the binary into the bundle. Use ../libtool to do this if it's
+# available beacuse if $EXE_NAME was built with autotools, it will be
+# necessary.  If ../libtool not available, just use cp to do the copy, but
+# only if $EXE_NAME is a binary.
+if [ -x ../libtool ]; then
+	../libtool --mode=install cp $EXE_NAME $EXEPATH
+else
+	file -bI $EXE_NAME |grep binary
+	if [ $? -ne 0 ]; then
+		echo "There is no ../libtool and $EXE_NAME is not a binary."
+		echo "I'm not sure what to do."
+		exit 1
+	else
+		cp $EXE_NAME $EXEPATH
+	fi
+fi
+copydeps $EXEPATH/$EXE_NAME