-AC_MSG_CHECKING(number of digits in LONG_MIN (incl. sign))
-AC_CACHE_VAL(blp_int_digits,
- [AC_TRY_RUN([#include <stdio.h>
- #include <limits.h>
- int
- main()
- {
- int len;
- char s[80];
- sprintf(s, "%ld", LONG_MAX);
- len = strlen(s);
- sprintf(s, "%ld", LONG_MIN);
- if(strlen(s)>len) len=strlen(s);
- sprintf(s, "%lu", ULONG_MAX);
- if(strlen(s)>len) len=strlen(s);
- exit(len);
- }
- ],
- eval "blp_int_digits=19",
- eval "blp_int_digits=$?"
- if test "$blp_int_digits" -lt 11; then
- blp_int_digits=11
- fi,
- eval "blp_int_digits=19")
- ])
-AC_DEFINE_UNQUOTED([INT_DIGITS], $blp_int_digits,
- [Number of digits in longest `long' value, including sign.
- This is usually 11, for 32-bit `long's, or 19, for 64-bit
- `long's.])
-AC_MSG_RESULT($blp_int_digits) ])dnl
-
-dnl Check quality of this machine's sprintf implementation.
-
-AC_DEFUN([BLP_IS_SPRINTF_GOOD],
-[
-AC_MSG_CHECKING(if sprintf returns a char count)
-AC_CACHE_VAL(blp_is_sprintf_good,
- [AC_TRY_RUN([#include <stdio.h>
- int
- main()
- {
- char s[8];
- exit((int)sprintf(s, "abcdefg")!=7);
- }
- ],
- eval "blp_is_sprintf_good=yes",
- eval "blp_is_sprintf_good=no",
- eval "blp_is_sprintf_good=no")
- ])
-if test "$blp_is_sprintf_good" = yes; then
- AC_DEFINE([HAVE_GOOD_SPRINTF], 1,
- [Define if sprintf() returns the number of characters written
- to the destination string, excluding the null terminator.])
- AC_MSG_RESULT(yes)
-else
- AC_MSG_RESULT(no)
+ if test "$pspp_optional_prereqs" != ""; then
+ AC_MSG_WARN([The following optional prerequisites are not installed.
+You may wish to install them to obtain additional functionality:$pspp_optional_prereqs])
+fi
+ if test "$pspp_required_prereqs" != ""; then
+ AC_MSG_ERROR([The following required prerequisites are not installed.
+You must install them before PSPP can be built:$pspp_required_prereqs])