esac
fi
-dnl Figure out the current CPU.
-catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
-case $CPUFAM in
- m4_define([catacomb_DEFINE_CPU],
- [m4_ifdef([catacomb_seen_cpu/$2], [],
- [$2)
- AC_DEFINE([CPUFAM_]m4_translit([$2], [a-z], [A-Z]), [1],
- [Define if host CPU family is \`$2\'.])
- ;;m4_define([catacomb_seen_cpu/$2], [t])])])
- catacomb_CPU_FAMILIES([catacomb_DEFINE_CPU])
+dnl A hairy macro used to set the `CPUFAM_...' and `ABI_...' variables. We
+dnl basically need to do the same thing for the family and ABI, so it's worth
+dnl some effort to hide the ugliness.
+m4_define([catacomb_DEFINE_CPU_OR_ABI],
+[case $$1 in
+ m4_define([_def],
+ [m4_ifdef([catacomb_seen_$3/$$2], [],
+ [$$2)
+ AC_DEFINE([$4]m4_translit([$$2], [a-z], [A-Z]), [1], [$5])
+ ;;m4_define([catacomb_seen_$3/$$2], [t])])])
+ catacomb_CPU_FAMILIES([_def])
nil) ;;
- *) AC_MSG_ERROR([BUG: unexpected cpufam \`$CPUFAM']) ;;
-esac
-AC_SUBST([CPUFAM])
+ *) AC_MSG_ERROR([BUG: unexpected $1 \`$1']) ;;
+esac])
-dnl Figure out the current ABI.
+dnl Figure out the target CPU family and ABI.
catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
-case $ABI in
- m4_define([catacomb_DEFINE_ABI],
- [m4_ifdef([catacomb_seen_abi/$3], [],
- [$3)
- AC_DEFINE([ABI_]m4_translit([$3], [a-z], [A-Z]), [1],
- [Define if host ABI variant is \`$3\'.])
- ;;m4_define([catacomb_seen_abi/$3], [t])])])
- catacomb_CPU_FAMILIES([catacomb_DEFINE_ABI])
- nil) ;;
- *) AC_MSG_ERROR([BUG: unexpected ABI \`$ABI']) ;;
-esac
-AC_SUBST([ABI])
+catacomb_DEFINE_CPU_OR_ABI([CPUFAM], [2], [cpu],
+ [CPUFAM_], [Define if target CPU is \`$][2\'.])
+catacomb_DEFINE_CPU_OR_ABI([ABI], [3], [abi],
+ [ABI_], [Define if target ABI is \`$][3\'.])
dnl Establish Automake conditions for things.
catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
dnl Various standard types.
-AC_CHECK_TYPE([pid_t], [int])
+AC_CHECK_TYPE([pid_t], [],
+ [AC_DEFINE([pid_t], [int],
+ [Define to `int' if <sys/types.h> does not define])])
AC_TYPE_UID_T
-AC_CHECK_TYPE([ssize_t], [int])
-AC_CHECK_TYPE([socklen_t], [int])
+AC_CHECK_TYPE([ssize_t], [],
+ [AC_DEFINE([ssize_t], [int],
+ [Define to `int' if <sys/types.h> does not define])])
+AC_CHECK_TYPE([socklen_t], [],
+ [AC_DEFINE([socklen_t], [int],
+ [Define to `int' if <sys/socket.h> does not define])],
+ [AC_INCLUDES_DEFAULT
+#include <sys/socket.h>
+])
dnl The maths library.
mdw_ORIG_LIBS=$LIBS LIBS=
dnl Find out whether very long integer types are available.
AC_CHECK_HEADERS([stdint.h])
AC_SUBST([have_stdint_h])
-AC_C_LONG_LONG
+AX_C_LONG_LONG
dnl Some equipment wanted for checking CPU features at runtime.
AC_CHECK_HEADERS([asm/hwcap.h])
catacomb_LIMIT([SIZET], [=0], [~(size_t)0])
AC_SUBST([limits])
+dnl Figure out other aspects of the implementation's arithmetic.
+AC_CACHE_CHECK([whether negative numbers use two's complement],
+ [catacomb_cv_neg_twoc],
+[AC_TRY_COMPILE(
+[#include <limits.h>],
+[int check[2*!!(-INT_MAX == INT_MIN + 1) - 1];],
+[catacomb_cv_neg_twoc=yes],
+[catacomb_cv_neg_twoc=no])])
+case $catacomb_cv_neg_twoc in
+ yes)
+ AC_DEFINE([NEG_TWOC], [1],
+ [Define if signed numbers are represented in two's complement.])
+ ;;
+esac
+
dnl Functions used for noise-gathering.
AC_CHECK_FUNCS([setgroups])
AC_CHECK_HEADERS([linux/random.h])