| # wctype_h.m4 serial 18 |
| |
| 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([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]) |
| ]) |
