[libvirt] Build fails on RHEL-5

Hey Stefan, When trying to build libvirt head on RHEL-5, I'm getting this error: gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../gnulib/lib -I../gnulib/lib -I../include -I../src/util -I../include -I/usr/include/libxml2 -DLIBDIR=\"/usr/local/lib\" -DBINDIR=\"/usr/local/libexec\" -DSBINDIR=\"/usr/local/sbin\" -DSYSCONF_DIR=\"/usr/local/etc\" -DLOCALEBASEDIR=\"/usr/local/share/locale\" -DPKGDATADIR=\"/usr/local/share/libvirt\" -DLOCAL_STATE_DIR=\"/usr/local/var\" -DGETTEXT_PACKAGE=\"libvirt\" -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -fdiagnostics-show-option -Werror -DIN_LIBVIRT -g -O2 -MT libvirt_conf_la-nwfilter_conf.lo -MD -MP -MF .deps/libvirt_conf_la-nwfilter_conf.Tpo -c conf/nwfilter_conf.c -fPIC -DPIC -o .libs/libvirt_conf_la-nwfilter_conf.o conf/nwfilter_conf.c:395: error: 'ETHERTYPE_IPV6' undeclared here (not in a function) make[3]: *** [libvirt_conf_la-nwfilter_conf.lo] Error 1 It seems that ETHERTYPE_IPV6 is not declared in /usr/include/net/ethernet.h in RHEL-5. We can probably get around this by adding (untested): #ifndef ETHERTYPE_IPV6 #define ETHERTYPE_IPV6 0x86dd #endif At the top of nwfilter_conf.c -- Chris Lalancette