tbr-mtp:/usr/src/asterisk/channels/h323 # make opt
g++ -DNDEBUG   -I../../include -Wmissing-prototypes -fPIC  -DP_USE_PRAGMA -D_REENTRANT -Wall  -fPIC -I/usr/src/pwlib_v1_9_0//include -DPTRACING -I/usr/src/openh323_v1_17_1/include -M ast_h323.cxx >> ast_h323.dep
g++ -DNDEBUG   -I../../include -Wmissing-prototypes -fPIC  -DP_USE_PRAGMA -D_REENTRANT -Wall  -fPIC -I/usr/src/pwlib_v1_9_0//include -DPTRACING -I/usr/src/openh323_v1_17_1/include -Os  -pipe -felide-constructors -x c++ -c ast_h323.cxx -o ast_h323.o
ast_h323.cxx:1:1: warning: "_GNU_SOURCE" redefined
<command line>:4:1: warning: this is the location of the previous definition
In file included from ast_h323.cxx:45:
../../include/asterisk/channel.h:210: error: semicolon missing after struct
   declaration
../../include/asterisk/channel.h:210: error: abstract declarator `
   ast_channel_spy::<anonymous struct>' used as declaration
../../include/asterisk/channel.h:210: error: namespace-scope anonymous
   aggregates must be static
make: *** [ast_h323.o] Error 1