--- /dev/null
+# wctype_h.m4 serial 17
+
+dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
+
+dnl Copyright (C) 2006-2012 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Paul Eggert.
+
+AC_DEFUN([gl_WCTYPE_H],
+[
+ AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_CHECK_FUNCS_ONCE([iswcntrl])
+ if test $ac_cv_func_iswcntrl = yes; then
+ HAVE_ISWCNTRL=1
+ else
+ HAVE_ISWCNTRL=0
+ fi
+ AC_SUBST([HAVE_ISWCNTRL])
+
+ AC_REQUIRE([AC_C_INLINE])
+
+ AC_REQUIRE([gt_TYPE_WINT_T])
+ if test $gt_cv_c_wint_t = yes; then
+ HAVE_WINT_T=1
+ else
+ HAVE_WINT_T=0
+ fi
+ AC_SUBST([HAVE_WINT_T])
+
+ gl_CHECK_NEXT_HEADERS([wctype.h])
+ if test $ac_cv_header_wctype_h = yes; then
+ if test $ac_cv_func_iswcntrl = yes; then
+ dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
+ dnl The other functions are likely broken in the same way.
+ AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
+ [
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+ /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
+ included before <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h>
+ must be included before <wchar.h>. */
+ #include <stddef.h>
+ #include <stdio.h>
+ #include <time.h>
+ #include <wchar.h>
+ #include <wctype.h>
+ int main () { return iswprint ('x') == 0; }
+ ]])],
+ [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+ #if __GNU_LIBRARY__ == 1
+ Linux libc5 i18n is broken.
+ #endif]], [])],
+ [gl_cv_func_iswcntrl_works="guessing yes"],
+ [gl_cv_func_iswcntrl_works="guessing no"])
+ ])
+ ])
+ fi
+ HAVE_WCTYPE_H=1
+ else
+ HAVE_WCTYPE_H=0
+ fi
+ AC_SUBST([HAVE_WCTYPE_H])
+
+ case "$gl_cv_func_iswcntrl_works" in
+ *yes) REPLACE_ISWCNTRL=0 ;;
+ *) REPLACE_ISWCNTRL=1 ;;
+ esac
+ AC_SUBST([REPLACE_ISWCNTRL])
+
+ if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
+ dnl Redefine all of iswcntrl, ..., iswxdigit in <wctype.h>.
+ :
+ fi
+
+ if test $REPLACE_ISWCNTRL = 1; then
+ REPLACE_TOWLOWER=1
+ else
+ AC_CHECK_FUNCS([towlower])
+ if test $ac_cv_func_towlower = yes; then
+ REPLACE_TOWLOWER=0
+ else
+ AC_CHECK_DECLS([towlower],,,
+ [[/* 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_WCTYPE_H
+ # include <wctype.h>
+ #endif
+ ]])
+ if test $ac_cv_have_decl_towlower = yes; then
+ dnl On Minix 3.1.8, the system's <wctype.h> declares towlower() and
+ dnl towupper() although it does not have the functions. Avoid a
+ dnl collision with gnulib's replacement.
+ REPLACE_TOWLOWER=1
+ else
+ REPLACE_TOWLOWER=0
+ fi
+ fi
+ fi
+ AC_SUBST([REPLACE_TOWLOWER])
+
+ if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then
+ dnl Redefine towlower, towupper in <wctype.h>.
+ :
+ fi
+
+ dnl We assume that the wctype() and iswctype() functions exist if and only
+ dnl if the type wctype_t is defined in <wchar.h> or in <wctype.h> if that
+ dnl exists.
+ dnl HP-UX 11.00 declares all these in <wchar.h> and lacks <wctype.h>.
+ AC_CACHE_CHECK([for wctype_t], [gl_cv_type_wctype_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[/* 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_WCTYPE_H
+ # include <wctype.h>
+ #endif
+ wctype_t a;
+ ]],
+ [[]])],
+ [gl_cv_type_wctype_t=yes],
+ [gl_cv_type_wctype_t=no])
+ ])
+ if test $gl_cv_type_wctype_t = no; then
+ HAVE_WCTYPE_T=0
+ fi
+
+ dnl We assume that the wctrans() and towctrans() functions exist if and only
+ dnl if the type wctrans_t is defined in <wctype.h>.
+ AC_CACHE_CHECK([for wctrans_t], [gl_cv_type_wctrans_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[/* 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>
+ #include <wctype.h>
+ wctrans_t a;
+ ]],
+ [[]])],
+ [gl_cv_type_wctrans_t=yes],
+ [gl_cv_type_wctrans_t=no])
+ ])
+ if test $gl_cv_type_wctrans_t = no; then
+ HAVE_WCTRANS_T=0
+ fi
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[
+/* 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>. */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <stddef.h>
+# include <stdio.h>
+# include <time.h>
+# include <wchar.h>
+#endif
+#include <wctype.h>
+ ]],
+ [wctype iswctype wctrans towctrans
+ ])
+])
+
+AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR],
+[
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+ AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+AC_DEFUN([gl_WCTYPE_H_DEFAULTS],
+[
+ GNULIB_ISWBLANK=0; AC_SUBST([GNULIB_ISWBLANK])
+ GNULIB_WCTYPE=0; AC_SUBST([GNULIB_WCTYPE])
+ GNULIB_ISWCTYPE=0; AC_SUBST([GNULIB_ISWCTYPE])
+ GNULIB_WCTRANS=0; AC_SUBST([GNULIB_WCTRANS])
+ GNULIB_TOWCTRANS=0; AC_SUBST([GNULIB_TOWCTRANS])
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_ISWBLANK=1; AC_SUBST([HAVE_ISWBLANK])
+ HAVE_WCTYPE_T=1; AC_SUBST([HAVE_WCTYPE_T])
+ HAVE_WCTRANS_T=1; AC_SUBST([HAVE_WCTRANS_T])
+ REPLACE_ISWBLANK=0; AC_SUBST([REPLACE_ISWBLANK])
+])
projects / debian / gzip / blobdiff