projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| f6ea5628 DJ |
1 | dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues. |
| 2 | ||
| 4c38e0a4 | 3 | dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc. |
| f6ea5628 DJ |
4 | dnl This file is free software; the Free Software Foundation |
| 5 | dnl gives unlimited permission to copy and/or distribute it, | |
| 6 | dnl with or without modifications, as long as this notice is preserved. | |
| 7 | ||
| 8 | dnl Written by Eric Blake. | |
| 9 | ||
| 10 | # wchar.m4 serial 4 | |
| 11 | ||
| 12 | AC_DEFUN([gl_WCHAR_H], | |
| 13 | [ | |
| 14 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | |
| 15 | AC_CACHE_CHECK([whether <wchar.h> is standalone], | |
| 16 | [gl_cv_header_wchar_h_standalone], | |
| 17 | [AC_COMPILE_IFELSE([[#include <wchar.h> | |
| 18 | wchar_t w;]], | |
| 19 | [gl_cv_header_wchar_h_standalone=yes], | |
| 20 | [gl_cv_header_wchar_h_standalone=no])]) | |
| 21 | if test $gl_cv_header_wchar_h_standalone != yes; then | |
| 22 | WCHAR_H=wchar.h | |
| 23 | fi | |
| 24 | ||
| 25 | dnl Prepare for creating substitute <wchar.h>. | |
| 26 | dnl Do it always: WCHAR_H may be empty here but can be set later. | |
| 27 | dnl Check for <wchar.h> (missing in Linux uClibc when built without wide | |
| 28 | dnl character support). | |
| 29 | AC_CHECK_HEADERS_ONCE([wchar.h]) | |
| 30 | if test $ac_cv_header_wchar_h = yes; then | |
| 31 | HAVE_WCHAR_H=1 | |
| 32 | else | |
| 33 | HAVE_WCHAR_H=0 | |
| 34 | fi | |
| 35 | AC_SUBST([HAVE_WCHAR_H]) | |
| 36 | gl_CHECK_NEXT_HEADERS([wchar.h]) | |
| 37 | ]) | |
| 38 | ||
| 39 | AC_DEFUN([gl_WCHAR_MODULE_INDICATOR], | |
| 40 | [ | |
| 41 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | |
| 42 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | |
| 43 | GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1 | |
| 44 | ]) | |
| 45 | ||
| 46 | AC_DEFUN([gl_WCHAR_H_DEFAULTS], | |
| 47 | [ | |
| 48 | GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH]) | |
| 49 | dnl Assume proper GNU behavior unless another module says otherwise. | |
| 50 | HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH]) | |
| 51 | REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH]) | |
| 52 | WCHAR_H= | |
| 53 | AC_SUBST([WCHAR_H]) | |
| 54 | ]) |