-# float_h.m4 serial 4
+# float_h.m4 serial 7
dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST])
FLOAT_H=
+ REPLACE_FLOAT_LDBL=0
case "$host_os" in
- beos* | openbsd* | mirbsd*)
+ aix* | beos* | openbsd* | mirbsd* | irix*)
FLOAT_H=float.h
- gl_CHECK_NEXT_HEADERS([float.h])
+ ;;
+ freebsd*)
+ case "$host_cpu" in
+changequote(,)dnl
+ i[34567]86 )
+changequote([,])dnl
+ FLOAT_H=float.h
+ ;;
+ x86_64 )
+ # On x86_64 systems, the C compiler may still be generating
+ # 32-bit code.
+ AC_EGREP_CPP([yes],
+ [#if defined __LP64__ || defined __x86_64__ || defined __amd64__
+ yes
+ #endif],
+ [],
+ [FLOAT_H=float.h])
+ ;;
+ esac
+ ;;
+ esac
+ case "$host_os" in
+ aix* | freebsd*)
+ if test -n "$FLOAT_H"; then
+ REPLACE_FLOAT_LDBL=1
+ fi
;;
esac
+ if test -n "$FLOAT_H"; then
+ gl_NEXT_HEADERS([float.h])
+ fi
AC_SUBST([FLOAT_H])
+ AM_CONDITIONAL([GL_GENERATE_FLOAT_H], [test -n "$FLOAT_H"])
])