AM_PROG_CC_C_O
AC_LANG_C
-dnl Checking for header files.
-AC_HEADER_STDC
-AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS(stdlib.h unistd.h errno.h assert.h)
-AC_CHECK_HEADERS(string.h strings.h)
-
dnl Checking for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_PID_T