dnl Check for stuff needed for building the GiNaC interactive shell (ginsh).
AC_CHECK_HEADERS(unistd.h)
+GINAC_HAVE_RUSAGE
AC_CHECK_HEADERS(readline/readline.h readline/history.h)
if test "x${ac_cv_header_readline_readline_h}" != "xyes" -o "x${ac_cv_header_readline_history_h}" != "xyes"; then
GINAC_WARNING([I could not find the headers for libreadline (needed for building ginsh).])
AC_CHECK_HEADER(stdexcept, , GINAC_ERROR([The standard <stdexcept> header file could not be found.]))
AC_CHECK_HEADER(algorithm, , GINAC_ERROR([The standard <algorithm> header file could not be found.]))
AC_CHECK_HEADER(limits, , GINAC_ERROR([The standard <limits> header file could not be found.]))
+if test "x$CONFIG_RUSAGE" = "xno"; then
+ AC_CHECK_HEADER(ctime, , GINAC_ERROR([The standard <ctime> header file could not be found.]))
+fi
dnl We need to have Bruno Haible's CLN installed.
dnl (CLN versions >= 1.1.0 must have installed cln.m4 at a visible place,