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Unified Diff: bison/src/bison/2.4.1/bison-2.4.1-src/m4/wcwidth.m4

Issue 10807020: Add native Windows binary for bison. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/
Patch Set: Created 8 years, 5 months ago
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Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/wcwidth.m4
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/wcwidth.m4 (revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/wcwidth.m4 (revision 0)
@@ -0,0 +1,85 @@
+# wcwidth.m4 serial 14
+dnl Copyright (C) 2006-2008 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.
+
+AC_DEFUN([gl_FUNC_WCWIDTH],
+[
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+ dnl Persuade glibc <wchar.h> to declare wcwidth().
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ AC_REQUIRE([gt_TYPE_WCHAR_T])
+ AC_REQUIRE([gt_TYPE_WINT_T])
+
+ AC_CHECK_HEADERS_ONCE([wchar.h])
+ AC_CHECK_FUNCS_ONCE([wcwidth])
+
+ AC_CHECK_DECLS([wcwidth], [], [], [
+/* AIX 3.2.5 declares wcwidth in <string.h>. */
+#include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
+ before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+])
+ if test $ac_cv_have_decl_wcwidth != yes; then
+ HAVE_DECL_WCWIDTH=0
+ fi
+
+ if test $ac_cv_func_wcwidth = no; then
+ REPLACE_WCWIDTH=1
+ else
+ dnl On MacOS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
+ dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1.
+ dnl This leads to bugs in 'ls' (coreutils).
+ AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales],
+ [gl_cv_func_wcwidth_works],
+ [
+ AC_TRY_RUN([
+#include <locale.h>
+/* AIX 3.2.5 declares wcwidth in <string.h>. */
+#include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
+ before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+#if !HAVE_DECL_WCWIDTH
+extern
+# ifdef __cplusplus
+"C"
+# endif
+int wcwidth (int);
+#endif
+int main ()
+{
+ if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL)
+ if (wcwidth (0x0301) > 0 || wcwidth (0x200B) > 0)
+ return 1;
+ return 0;
+}], [gl_cv_func_wcwidth_works=yes], [gl_cv_func_wcwidth_works=no],
+ [gl_cv_func_wcwidth_works="guessing no"])
+ ])
+ case "$gl_cv_func_wcwidth_works" in
+ *yes) ;;
+ *no) REPLACE_WCWIDTH=1 ;;
+ esac
+ fi
+ if test $REPLACE_WCWIDTH = 1; then
+ AC_LIBOBJ([wcwidth])
+ fi
+
+ if test $REPLACE_WCWIDTH = 1 || test $HAVE_DECL_WCWIDTH = 0; then
+ gl_REPLACE_WCHAR_H
+ fi
+])
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