1*4887Schinset prototyped 2*4887Schinhdr vfork 3*4887Schinsys vfork 4*4887Schin 5*4887Schintst run{ 6*4887Schin if test "$_hdr_vfork" = 1 7*4887Schin then echo "#include <vfork.h>" 8*4887Schin elif test "$_sys_vfork" = 1 9*4887Schin then echo "#include <sys/vfork.h>" 10*4887Schin else echo '#include <unistd.h>' > $tmp.c 11*4887Schin $cc -E $tmp.c | grep vfork 12*4887Schin fi 13*4887Schin}end 14