Commit 08c5cc05 authored by reid's avatar reid

[project @ 1998-03-03 19:04:47 by reid]

Added alignment tests
parent d43f6852
......@@ -59,6 +59,15 @@
/* Define to unsigned long long int if <sys/types.h> doesn't define */
#undef ullong
/* Define to alignment constraint on doubles or on unsigned int - whichever is the greater */
#undef ALIGNMENT_DOUBLE
/* Define to alignment constraint on floats or on unsigned int - whichever is the greater */
#undef ALIGNMENT_FLOAT
/* Define to alignment constraint on unsigned int - whichever is the greater */
#undef ALIGNMENT_UNSIGNED_INT
/* Leave that blank line there!! Autoheader needs it.
If you're adding to this file, keep in mind:
......
# $Id: aclocal.m4,v 1.19 1998/03/03 04:45:07 reid Exp $
# $Id: aclocal.m4,v 1.20 1998/03/03 19:04:48 reid Exp $
#
# Extra autoconf macros for the Glasgow fptools
#
......@@ -340,3 +340,45 @@ else
fi
rm -fr conftest*
])
dnl ** figure out whether types can be word-aligned
dnl (test based on test in smalltalk-1.1.5 configuration)
dnl (required SIZEOF test but AC_CHECK_SIZEOF doesn't call PROVIDE
dnl so we can't call REQUIRE)
dnl GHC_CHECK_ALIGNMENT(TYPE)
AC_DEFUN(GHC_CHECK_ALIGNMENT,
[changequote(<<, >>)dnl
dnl The name to #define.
define(<<AC_TYPE_NAME>>, translit(alignment_$1, [a-z *], [A-Z_P]))dnl
dnl The cache variable name.
define(<<AC_CV_NAME>>, translit(ac_cv_alignment_$1, [ *], [_p]))dnl
dnl The name of the corresponding size.
define(<<AC_CV_SIZEOF_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl
changequote([, ])dnl
AC_MSG_CHECKING(alignment of $1)
AC_CACHE_VAL(AC_CV_NAME,
[AC_TRY_RUN([
main()
{
unsigned int vec[3];
$1 test, *testptr;
test = *($1 *)&vec[1];
testptr = ($1 *)&vec[1];
*testptr = test;
exit(0);
}
],
AC_CV_NAME=$ac_cv_sizeof_unsigned_int,
AC_CV_NAME=$AC_CV_SIZEOF_NAME,
AC_CV_NAME=$AC_CV_SIZEOF_NAME)])
AC_MSG_RESULT($AC_CV_NAME)
AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
AC_PROVIDE($AC_TYPE_NAME)
undefine([AC_TYPE_NAME])dnl
undefine([AC_CV_NAME])dnl
undefine([AC_CV_SIZEOF_NAME])dnl
])
......@@ -443,13 +443,24 @@ dnl ** how do we get a timezone name, and UTC offset ?
AC_STRUCT_TIMEZONE
#
dnl what's the type of timezone?
dnl ** what's the type of timezone?
AC_TYPE_TIMEZONE
#
dnl do we have altzone?
dnl ** do we have altzone?
AC_ALTZONE
dnl ** what are the sizes of various types
dnl (these must come before GHC_CHECK_ALIGNMENT)
AC_CHECK_SIZEOF(unsigned int,4)
AC_CHECK_SIZEOF(float,4)
AC_CHECK_SIZEOF(double,8)
dnl ** what are alignment constraints on various types
GHC_CHECK_ALIGNMENT(unsigned int) dnl redundant but harmless
GHC_CHECK_ALIGNMENT(float)
GHC_CHECK_ALIGNMENT(double)
#
dnl ** check for specific library functions that we are interested in
#
......
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