86 lines
2.5 KiB
Plaintext
86 lines
2.5 KiB
Plaintext
# wctype_h.m4 serial 8
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dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
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dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl Written by Paul Eggert.
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AC_DEFUN([gl_WCTYPE_H],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_CHECK_FUNCS_ONCE([iswcntrl])
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if test $ac_cv_func_iswcntrl = yes; then
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HAVE_ISWCNTRL=1
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else
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HAVE_ISWCNTRL=0
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fi
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AC_SUBST([HAVE_ISWCNTRL])
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AC_CHECK_FUNCS_ONCE([iswblank])
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AC_CHECK_DECLS_ONCE([iswblank])
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if test $ac_cv_func_iswblank = yes; then
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HAVE_ISWBLANK=1
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REPLACE_ISWBLANK=0
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else
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HAVE_ISWBLANK=0
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if test $ac_cv_have_decl_iswblank = yes; then
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REPLACE_ISWBLANK=1
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else
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REPLACE_ISWBLANK=0
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fi
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fi
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AC_SUBST([HAVE_ISWBLANK])
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AC_SUBST([REPLACE_ISWBLANK])
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AC_CHECK_HEADERS_ONCE([wctype.h])
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AC_REQUIRE([AC_C_INLINE])
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AC_REQUIRE([gt_TYPE_WINT_T])
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if test $gt_cv_c_wint_t = yes; then
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HAVE_WINT_T=1
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else
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HAVE_WINT_T=0
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fi
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AC_SUBST([HAVE_WINT_T])
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if test $ac_cv_header_wctype_h = yes; then
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if test $ac_cv_func_iswcntrl = yes; then
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dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
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dnl The other functions are likely broken in the same way.
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AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
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[
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AC_RUN_IFELSE([AC_LANG_SOURCE([[
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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#include <wchar.h>
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#include <wctype.h>
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int main () { return iswprint ('x') == 0; }]])],
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[gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
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#if __GNU_LIBRARY__ == 1
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Linux libc5 i18n is broken.
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#endif]], [])],
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[gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no])
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])
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])
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fi
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gl_CHECK_NEXT_HEADERS([wctype.h])
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HAVE_WCTYPE_H=1
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else
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HAVE_WCTYPE_H=0
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fi
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AC_SUBST([HAVE_WCTYPE_H])
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if test "$gl_cv_func_iswcntrl_works" = no; then
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REPLACE_ISWCNTRL=1
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else
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REPLACE_ISWCNTRL=0
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fi
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AC_SUBST([REPLACE_ISWCNTRL])
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])
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