/bin/ksh /path/to/build/xdebug-2.9.8/libtool --mode=compile gcc -specs=/shared/build/autobuild/specs/specs.solaris   -I. -I/path/to/build/xdebug-2.9.8 -DPHP_ATOM_INC -I/path/to/build/xdebug-2.9.8/include -I/path/to/build/xdebug-2.9.8/main -I/path/to/build/xdebug-2.9.8 -I/path/to/php/include/php -I/path/to/php/include/php/main -I/path/to/php/include/php/TSRM -I/path/to/php/include/php/Zend -I/path/to/php/include/php/ext -I/path/to/php/include/php/ext/date/lib -I/path/to/build/xdebug-2.9.8/src  -DHAVE_CONFIG_H  -mcpu=v9 -O2 -g -Wall -fno-strict-aliasing -D_POSIX_PTHREAD_SEMANTICS   -c /path/to/build/xdebug-2.9.8/src/debugger/com.c -o src/debugger/com.lo
 gcc -specs=/path/to/specs.solaris -I. -I/path/to/build/xdebug-2.9.8 -DPHP_ATOM_INC -I/path/to/build/xdebug-2.9.8/include -I/path/to/build/xdebug-2.9.8/main -I/path/to/build/xdebug-2.9.8 -I/path/to/php/include/php -I/path/to/php/include/php/main -I/path/to/php/include/php/TSRM -I/path/to/php/include/php/Zend -I/path/to/php/include/php/ext -I/path/to/php/include/php/ext/date/lib -I/path/to/build/xdebug-2.9.8/src -DHAVE_CONFIG_H -mcpu=v9 -O2 -g -Wall -fno-strict-aliasing -D_POSIX_PTHREAD_SEMANTICS -c /path/to/build/xdebug-2.9.8/src/debugger/com.c  -fPIC -DPIC -o src/debugger/.libs/com.o
/path/to/build/xdebug-2.9.8/src/debugger/com.c: In function 'set_keepalive_options':
/path/to/build/xdebug-2.9.8/src/debugger/com.c:115:32: error: 'TCP_KEEPCNT' undeclared (first use in this function); did you mean 'TCP_KEEPIDLE'?
  115 |  ret = setsockopt(fd, SOL_TCP, TCP_KEEPCNT, &optval, optlen);
      |                                ^~~~~~~~~~~
      |                                TCP_KEEPIDLE
/path/to/build/xdebug-2.9.8/src/debugger/com.c:115:32: note: each undeclared identifier is reported only once for each function it appears in
/path/to/build/xdebug-2.9.8/src/debugger/com.c:121:32: error: 'TCP_KEEPINTVL' undeclared (first use in this function); did you mean 'TCP_KEEPALIVE'?
  121 |  ret = setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &optval, optlen);
      |                                ^~~~~~~~~~~~~
      |                                TCP_KEEPALIVE
make: *** [Makefile:275: src/debugger/com.lo] Error 1