Commit 3d82495b authored by sof's avatar sof

[project @ 1998-04-07 21:24:55 by sof]

GHC_CHECK_ALIGNMENT changed to check natural alignment restrictions
parent d0f325ce
# $Id: aclocal.m4,v 1.20 1998/03/03 19:04:48 reid Exp $
#
# Extra autoconf macros for the Glasgow fptools
#
dnl $Id: aclocal.m4,v 1.21 1998/04/07 21:24:55 sof Exp $
dnl
dnl Extra autoconf macros for the Glasgow fptools
dnl
#
# Are we running under the GNU libc? Need -D_GNU_SOURCE to get
# caddr_t and such.
#
dnl
dnl Are we running under the GNU libc? Need -D_GNU_SOURCE to get
dnl caddr_t and such.
dnl
AC_DEFUN(AC_GNU_LIBC,
[AC_CACHE_CHECK([GNU libc], ac_cv_gnu_libc,
[AC_EGREP_CPP(yes,
......@@ -20,10 +20,10 @@ if test "$ac_cv_gnu_libc" = yes; then
fi
])
#
# Has timezone the type time_t or long (HP-UX 10.20 apparently
# has `long'..)
#
dnl
dnl Has timezone the type time_t or long (HP-UX 10.20 apparently
dnl has `long'..)
dnl
AC_DEFUN(AC_TYPE_TIMEZONE,
[AC_CACHE_CHECK([type of timezone], ac_cv_type_timezone,
[AC_TRY_COMPILE([#if TIME_WITH_SYS_TIME
......@@ -43,9 +43,8 @@ extern time_t timezone;
AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $ac_cv_type_timezone)
])
#
# Is altzone available?
#
dnl *** Is altzone available? ***
dnl
AC_DEFUN(AC_ALTZONE,
[AC_CACHE_CHECK([altzone], ac_cv_altzone,
[AC_TRY_LINK([#if TIME_WITH_SYS_TIME
......@@ -65,21 +64,21 @@ if test "$ac_cv_altzone" = yes; then
fi
])
#
dnl ** check for leading underscores in symbol names
#
# Test for determining whether symbol names have a leading
# underscore.
#
# We assume that they _haven't_ if anything goes wrong.
#
dnl
dnl Test for determining whether symbol names have a leading
dnl underscore.
dnl
dnl We assume that they _haven't_ if anything goes wrong.
dnl
AC_DEFUN(AC_UNDERSCORE,
[AC_CHECK_LIB(elf, nlist, LIBS="-lelf $LIBS")dnl
AC_CACHE_CHECK([leading underscore in symbol names], ac_cv_lead_uscore,
#
# Hack!: nlist() under Digital UNIX insist on there being an _,
# but symbol table listings show none. What is going on here?!?
#
dnl
dnl Hack!: nlist() under Digital UNIX insist on there being an _,
dnl but symbol table listings show none. What is going on here?!?
dnl
changequote(<<, >>)dnl
<<
case $HostPlatform in
......@@ -110,9 +109,9 @@ LeadingUnderscore=`echo $ac_cv_lead_uscore | sed 'y/yesno/YESNO/'`
AC_SUBST(LeadingUnderscore)
])
#
# Check for Happy and version.
#
dnl
dnl Check for Happy and version.
dnl
AC_DEFUN(AC_HAPPY,
[AC_PATH_PROG(HappyCmd,happy)
AC_CACHE_CHECK([for version of happy], ac_cv_happy_version,
......@@ -134,11 +133,11 @@ HappyVersion=$ac_cv_happy_version;
AC_SUBST(HappyVersion)
])
#
# What's the best way of doing context diffs?
#
# (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
#
dnl
dnl What's the best way of doing context diffs?
dnl
dnl (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
dnl
AC_DEFUN(AC_PROG_DIFF,
[AC_CACHE_CHECK([for ok way to do context diffs], ac_cv_context_diffs,
[echo foo > conftest1
......@@ -160,9 +159,9 @@ ContextDiffCmd=$ac_cv_context_diffs
AC_SUBST(ContextDiffCmd)
])
#
# Finding the Right Yacc
#
dnl
dnl Finding the Right Yacc
dnl
AC_DEFUN(AC_PROG_YACCY,
[AC_PROG_YACC
if test "$YACC" = "yacc"; then
......@@ -194,10 +193,10 @@ YaccCmd=$ac_cv_prog_yacc
AC_SUBST(YaccCmd)
])
dnl Checking for ar and its arguments + whether we need ranlib.
#
# ArCmd and RANLIB are AC_SUBST'ed
#
dnl *** Checking for ar and its arguments + whether we need ranlib.
dnl
dnl ArCmd and RANLIB are AC_SUBST'ed
dnl
AC_DEFUN(AC_PROG_AR_AND_RANLIB,
[AC_PATH_PROG(ArCmd,ar)
if test -z "$ArCmd"; then
......@@ -235,9 +234,9 @@ else
fi
])
#
dnl
dnl AC_SHEBANG_PERL - can we she-bang perl?
#
dnl
AC_DEFUN(AC_SHEBANG_PERL,
[AC_CACHE_CHECK([if your perl works in shell scripts], ac_cv_shebang_perl,
[echo "#!$PerlCmd"'
......@@ -253,10 +252,10 @@ fi
rm -f conftest
])])
#
# Extra testing of the result AC_PROG_CC, testing the gcc version no.
# *Must* be called after AC_PROG_CC
#
dnl
dnl Extra testing of the result AC_PROG_CC, testing the gcc version no.
dnl *Must* be called after AC_PROG_CC
dnl
AC_DEFUN(AC_HAVE_GCC,
[AC_CACHE_CHECK([whether you have an ok gcc], ac_cv_have_gcc,
[if test -z "$GCC"; then
......@@ -280,12 +279,12 @@ HaveGcc=`echo $ac_cv_have_gcc | sed 'y/yesno/YESNO/'`
AC_SUBST(HaveGcc)
])
#
# AC_PROG_GNUCPP gathers the path to the cpp that the
# gcc driver calls upon.
#
# Substitutes: GNUCPP and RAWCPP (latter is 'GNUCPP -traditional')
#
dnl
dnl AC_PROG_GNUCPP gathers the path to the cpp that the
dnl gcc driver calls upon.
dnl
dnl Substitutes: GNUCPP and RAWCPP (latter is 'GNUCPP -traditional')
dnl
AC_DEFUN(AC_PROG_GNUCPP,
[AC_CACHE_CHECK([how to invoke GNU cpp directly], ac_cv_gnu_cpp,
[if test "$HaveGcc" = "YES"; then
......@@ -310,10 +309,9 @@ AC_SUBST(GNUCPP)
AC_SUBST(RAWCPP)
])
#
# Small feature test for perl version. Assumes PerlCmd
# contains path to perl binary
#
dnl Small feature test for perl version. Assumes PerlCmd
dnl contains path to perl binary
dnl
AC_DEFUN(AC_CHECK_PERL_VERSION,
[$PerlCmd -v >conftest.out 2>&1
if grep "version 4" conftest.out >/dev/null 2>&1; then
......@@ -341,8 +339,7 @@ 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 ** figure out the alignment restriction of a type
dnl (required SIZEOF test but AC_CHECK_SIZEOF doesn't call PROVIDE
dnl so we can't call REQUIRE)
......@@ -359,19 +356,22 @@ changequote([, ])dnl
AC_MSG_CHECKING(alignment of $1)
AC_CACHE_VAL(AC_CV_NAME,
[AC_TRY_RUN([
#include <stdio.h>
#if HAVE_STDDEF_H
#include <stddef.h>
#endif
#ifndef offsetof
#define offsetof(ty,field) ((size_t)((char *)&((ty *)0)->field - (char *)(ty *)0))
#endif
int
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,
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%d\n", offsetof(struct { char c; $1 ty;},ty));
exit(0);
}],
AC_CV_NAME=`cat conftestval`,
AC_CV_NAME=$AC_CV_SIZEOF_NAME,
AC_CV_NAME=$AC_CV_SIZEOF_NAME)])
AC_MSG_RESULT($AC_CV_NAME)
......
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