On OS X, add an rpath for the Qt frameworks, and remove it in the app bundle.

Qt 5.5 and later have @rpath-based install names for the frameworks,
which means that, if they're not installed in some frameworks directory
searched by default (such as /Library/Frameworks) - which is the default
case with the Qt installer - they won't be found by default.

Add the directory in which the frameworks exist as an rpath in the
Wireshark binary, so that they'll be found, and then remove it from the
Wireshark binary in the app bundle, as the directory in which the
frameworks exist on the machine on which Wireshark was built is
irrelevant to the machines on which it's being deployed - the frameworks
are included in the bundle, and we already add an rpath to find them
there.

Change-Id: I54e033743e7b17eab26976064dcd7cd000f97c78
Reviewed-on: https://code.wireshark.org/review/9625
Reviewed-by: Guy Harris <guy@alum.mit.edu>

Makefile.am

@@ -372,7 +372,7 @@ if HAVE_GTK
 wireshark_gtk_LDFLAGS = -export-dynamic
 endif
 if HAVE_Qt
-wireshark_LDFLAGS = -export-dynamic
+wireshark_LDFLAGS = -export-dynamic @Qt_LDFLAGS@
 endif
 endif
 

configure.ac

@@ -1625,7 +1625,7 @@ if test "x$enable_wireshark" = "xyes"; then
 	fi
 	if test "x$with_qt" != "xno"; then
 		#
-		# Qt was specified; Make sure we have a C++ compiler.
+		# Qt was specified; make sure we have a C++ compiler.
 		#
 		if test -z "$CXX"; then
 			AC_MSG_ERROR(Need a working C++ compiler to build Wireshark with Qt)
@@ -1663,6 +1663,26 @@ if test "x$enable_wireshark" = "xyes"; then
 			AC_SUBST(MOC)
 			AC_WIRESHARK_QT_TOOL_CHECK(RCC, rcc, "$qt_version")
 			AC_SUBST(RCC)
+
+			#
+			# On Darwin, find where the Qt frameworks are
+			# located, and add that to the rpath, just in
+			# case this is Qt 5.5 or later and the frameworks
+			# have an install name that begins with @rpath
+			# and aren't installed in a frameworks directory
+			# that's searched by default.
+			#
+			case "$host_os" in
+			darwin*)
+				if test $qt_version -le 4
+				then
+					Qt_LDFLAGS="-Wl,-rpath,"`$PKG_CONFIG --libs QtCore | sed -e 's/-F//' -e 's/ -framework.*//'`
+				else
+					Qt_LDFLAGS="-Wl,-rpath,"`$PKG_CONFIG --libs Qt${qt_version}Core | sed -e 's/-F//' -e 's/ -framework.*//'`
+				fi
+				;;
+			esac
+			AC_SUBST(Qt_LDFLAGS)
 		],
 		[
 			case "$with_qt" in

packaging/macosx/osx-app.sh

@@ -178,6 +178,21 @@ elif [ ! -d "$bundle" ] ; then
 	exit 1
 fi
 
+if [ "$ui_toolkit" = "qt" ] ; then
+	for i in 5 ""
+	do
+		qt_frameworks_dir=`pkg-config --libs Qt${i}Core | sed -e 's/-F//' -e 's/ -framework.*//'`
+		if [ ! -z "$qt_frameworks_dir" ] ; then
+			# found it
+			break;
+		fi
+	done
+	if [ -z "$qt_frameworks_dir" ] ; then
+		echo "Can't find the Qt frameworks directory" >&2
+		exit 1
+	fi
+fi
+
 # Package paths
 pkgexec="$bundle/Contents/MacOS"
 pkgres="$bundle/Contents/Resources"
@@ -468,6 +483,12 @@ fi
 
 if [ "$ui_toolkit" = "qt" ] ; then
 	macdeployqt "$bundle" -verbose=3 || exit 1
+
+	#
+	# The build process added to the Wireshark binary an rpath entry
+	# pointing to the directory containing the Qt frameworks; remove
+	# that entry from the Wireshark binary in the package.
+	/usr/bin/install_name_tool -delete_rpath "$qt_frameworks_dir" $pkgbin/Wireshark
 fi
 
 # NOTE: we must rpathify *all* files, *including* plugins for GTK+ etc.,