+2012-05-05 Bruno Haible <bruno@clisp.org>
+
+ fseeko-tests, ftello-tests: Avoid "guessing no" when cross-compiling.
+ * m4/ungetc.m4 (gl_FUNC_UNGETC_WORKS): Require AC_CANONICAL_HOST. When
+ cross-compiling to a glibc platform, set gl_cv_func_ungetc_works to
+ "guessing yes".
+
2012-05-05 Bruno Haible <bruno@clisp.org>
signbit: Avoid "guessing no" when cross-compiling to glibc systems.
-# ungetc.m4 serial 2
+# ungetc.m4 serial 3
dnl Copyright (C) 2009-2012 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_DEFUN_ONCE([gl_FUNC_UNGETC_WORKS],
[
AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether ungetc works on arbitrary bytes],
[gl_cv_func_ungetc_works],
if (fgetc (f) != 'c') return 11;
fclose (f); remove ("conftest.tmp");])],
[gl_cv_func_ungetc_works=yes], [gl_cv_func_ungetc_works=no],
- [gl_cv_func_ungetc_works='guessing no'])
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_ungetc_works="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_ungetc_works="guessing no" ;;
+ esac
+ ])
])
- if test "$gl_cv_func_ungetc_works" != yes; then
- AC_DEFINE([FUNC_UNGETC_BROKEN], [1],
- [Define to 1 if ungetc is broken when used on arbitrary bytes.])
- fi
+ case "$gl_cv_func_ungetc_works" in
+ *yes) ;;
+ *)
+ AC_DEFINE([FUNC_UNGETC_BROKEN], [1],
+ [Define to 1 if ungetc is broken when used on arbitrary bytes.])
+ ;;
+ esac
])