diff options
Diffstat (limited to 'm4/ungetc.m4')
| -rw-r--r-- | m4/ungetc.m4 | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/m4/ungetc.m4 b/m4/ungetc.m4 index 749f6bd..4e3577a 100644 --- a/m4/ungetc.m4 +++ b/m4/ungetc.m4 @@ -1,5 +1,5 @@ -# ungetc.m4 serial 2 -dnl Copyright (C) 2009-2011 Free Software Foundation, Inc. +# ungetc.m4 serial 3 +dnl Copyright (C) 2009-2013 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -7,6 +7,7 @@ dnl with or without modifications, as long as this notice is preserved. 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], @@ -27,10 +28,19 @@ AC_DEFUN_ONCE([gl_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 ]) |