Fix OpenFlow compilation with modern GCC/glibc and improve install.sh -fw support

util/install.sh

@@ -242,15 +242,22 @@ function of {
     fi
     # was: git clone git://openflowswitch.org/openflow.git
     # Use our own fork on github for now:
+    if [ ! -d "openflow" ]; then
         git clone https://github.com/mininet/openflow
+    fi
     cd $BUILD_DIR/openflow
 
-    # Patch controller to handle more than 16 switches
-    patch -p1 < $MININET_DIR/mininet/util/openflow-patches/controller.patch
+    # Patch controller to handle more than 16 switches and fix modern gcc/glibc issues
+    if [ -f "$MININET_DIR/mininet/util/openflow-patches/controller.patch" ]; then
+        patch -p1 -N -r - < "$MININET_DIR/mininet/util/openflow-patches/controller.patch" || true
+    fi
+    if [ -f "$MININET_DIR/mininet/util/openflow-patches/gcc-glibc.patch" ]; then
+        patch -p1 -N -r - < "$MININET_DIR/mininet/util/openflow-patches/gcc-glibc.patch" || true
+    fi
 
     # Resume the install:
     ./boot.sh
-    ./configure
+    CFLAGS="-g -O2 -Wno-error=incompatible-pointer-types -Wno-error=int-conversion -Wno-error=format -Wno-error=implicit-function-declaration -Wno-error=address-of-packed-member -Wno-error=discarded-qualifiers" ./configure
     make
     sudo make install
     cd $BUILD_DIR
@@ -300,7 +307,7 @@ function of13 {
 
 
 function install_wireshark {
-    if ! which wireshark; then
+    if ! which wireshark &>/dev/null && ! which tshark &>/dev/null; then
         echo "Installing Wireshark"
         if [ "$DIST" = "Fedora" -o "$DIST" = "RedHatEnterpriseServer" ]; then
             $install wireshark wireshark-gnome
@@ -313,29 +320,37 @@ function install_wireshark {
 
     # Copy coloring rules: OF is white-on-blue:
     echo "Optionally installing wireshark color filters"
-    mkdir -p $HOME/.wireshark
-    cp -n $MININET_DIR/mininet/util/colorfilters $HOME/.wireshark
+    mkdir -p $HOME/.wireshark $HOME/.config/wireshark
+    [ -f $MININET_DIR/mininet/util/colorfilters ] && cp -n $MININET_DIR/mininet/util/colorfilters $HOME/.wireshark/ || true
+    [ -f $MININET_DIR/mininet/util/colorfilters ] && cp -n $MININET_DIR/mininet/util/colorfilters $HOME/.config/wireshark/ || true
 
     echo "Checking Wireshark version"
-    WSVER=`wireshark -v | egrep -o '[0-9\.]+' | head -1`
-    if version_ge $WSVER 1.12; then
+    WSVER=`(wireshark -v 2>/dev/null || tshark -v 2>/dev/null || true) | grep -i -E 'wireshark|tshark' | egrep -o '[0-9\.]+' | head -1`
+    if [ -n "$WSVER" ] && version_ge "$WSVER" 1.12; then
         echo "Wireshark version $WSVER >= 1.12 - returning"
         return
+    elif which wireshark &>/dev/null || which tshark &>/dev/null; then
+        echo "Wireshark/TShark is already installed and modern versions include OpenFlow dissectors natively - returning"
+        return
     fi
 
     echo "Cloning LoxiGen and building openflow.lua dissector"
     cd $BUILD_DIR
+    if [ ! -d "loxigen" ]; then
         git clone https://github.com/floodlight/loxigen.git
+    fi
     cd loxigen
     make wireshark
 
     # Copy into plugin directory
     # libwireshark0/ on 11.04; libwireshark1/ on later
     WSDIR=`find /usr/lib -type d -name 'libwireshark*' | head -1`
+    if [ -n "$WSDIR" ]; then
         WSPLUGDIR=$WSDIR/plugins/
         PLUGIN=loxi_output/wireshark/openflow.lua
         sudo cp $PLUGIN $WSPLUGDIR
         echo "Copied openflow plugin $PLUGIN to $WSPLUGDIR"
+    fi
 
     cd $BUILD_DIR
 }

util/openflow-patches/gcc-glibc.patch

@@ -0,0 +1,88 @@
+diff --git a/lib/backtrace.c b/lib/backtrace.c
+index 5b61ffe..f77e489 100644
+--- a/lib/backtrace.c
++++ b/lib/backtrace.c
+@@ -123,6 +123,6 @@ backtrace_capture(struct backtrace *bt)
+     }
+     bt->n_frames = n;
+ #else
+-    bt->n_frames = backtrace(bt->frames, BACKTRACE_MAX_FRAMES);
++    bt->n_frames = backtrace((void **)bt->frames, BACKTRACE_MAX_FRAMES);
+ #endif
+ }
+diff --git a/lib/flow.c b/lib/flow.c
+index 523eff0..4a1bf7b 100644
+--- a/lib/flow.c
++++ b/lib/flow.c
+@@ -44,11 +44,10 @@
+ #include "vlog.h"
+ #define THIS_MODULE VLM_flow
+ 
+-static struct arp_header *
++static struct arp_eth_header *
+ pull_arp(struct ofpbuf *packet)
+ {
+     if (packet->size >= ARP_ETH_HEADER_LEN) {
+-        struct arp_eth_header *arp = packet->data;
+         return ofpbuf_pull(packet, ARP_ETH_HEADER_LEN);
+     }
+     return NULL;
+diff --git a/lib/socket-util.c b/lib/socket-util.c
+index c7b5d6d..5b3d602 100644
+--- a/lib/socket-util.c
++++ b/lib/socket-util.c
+@@ -42,6 +42,7 @@
+ #include <stdio.h>
+ #include <string.h>
+ #include <sys/resource.h>
++#include <sys/stat.h>
+ #include <sys/un.h>
+ #include <unistd.h>
+ #include "fatal-signal.h"
+diff --git a/lib/stp.c b/lib/stp.c
+index b638311..b81ae53 100644
+--- a/lib/stp.c
++++ b/lib/stp.c
+@@ -34,6 +34,7 @@
+ /* Based on sample implementation in 802.1D-1998.  Above copyright and license
+  * applies to all modifications. */
+ 
++#include <config.h>
+ #include "stp.h"
+ #include <arpa/inet.h>
+ #include <assert.h>
+diff --git a/lib/util.c b/lib/util.c
+index 21cc28d..1f341b1 100644
+--- a/lib/util.c
++++ b/lib/util.c
+@@ -138,6 +138,7 @@ xasprintf(const char *format, ...)
+     return s;
+ }
+ 
++#ifndef HAVE_STRLCPY
+ void
+ strlcpy(char *dst, const char *src, size_t size)
+ {
+@@ -148,6 +149,7 @@ strlcpy(char *dst, const char *src, size_t size)
+         dst[n_copy] = '\0';
+     }
+ }
++#endif
+ 
+ void
+ ofp_fatal(int err_no, const char *format, ...)
+diff --git a/lib/util.h b/lib/util.h
+index fde681f..dc4e71f 100644
+--- a/lib/util.h
++++ b/lib/util.h
+@@ -34,6 +34,10 @@
+ #ifndef UTIL_H
+ #define UTIL_H 1
+ 
++#if HAVE_CONFIG_H
++#include <config.h>
++#endif
++
+ #include <stdarg.h>
+ #include <stdbool.h>
+ #include <stddef.h>