1N/Aset prototyped
1N/Ahdr vfork
1N/Asys vfork
1N/A
1N/Atst run{
1N/A if test "$_hdr_vfork" = 1
1N/A then echo "#include <vfork.h>"
1N/A elif test "$_sys_vfork" = 1
1N/A then echo "#include <sys/vfork.h>"
1N/A else echo '#include <unistd.h>' > $tmp.c
1N/A $cc -E $tmp.c | grep vfork
1N/A fi
1N/A}end