gnulib/import/m4/locale_h.m4

   1 # locale_h.m4 serial 24
   2 dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_LOCALE_H],
   8 [
   9   dnl Use AC_REQUIRE here, so that the default behavior below is expanded
  10   dnl once only, before all statements that occur in other macros.
  11   AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
  12
  13   dnl Persuade glibc <locale.h> to define locale_t and the int_p_*, int_n_*
  14   dnl members of 'struct lconv'.
  15   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  16
  17   dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
  18   AC_REQUIRE([gl_STDDEF_H])
  19
  20   AC_REQUIRE([gl_LOCALE_T])
  21
  22   dnl Solaris 11.0 defines the int_p_*, int_n_* members of 'struct lconv'
  23   dnl only if _LCONV_C99 is defined.
  24   AC_REQUIRE([AC_CANONICAL_HOST])
  25   case "$host_os" in
  26     solaris*)
  27       AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
  28       ;;
  29   esac
  30
  31   AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
  32     [gl_cv_header_locale_h_posix2001],
  33     [AC_COMPILE_IFELSE(
  34        [AC_LANG_PROGRAM(
  35           [[#include <locale.h>
  36             int x = LC_MESSAGES;
  37             int y = sizeof (((struct lconv *) 0)->decimal_point);]],
  38           [[]])],
  39        [gl_cv_header_locale_h_posix2001=yes],
  40        [gl_cv_header_locale_h_posix2001=no])])
  41
  42   dnl Check whether 'struct lconv' is complete.
  43   dnl Bionic libc's 'struct lconv' is just a dummy.
  44   dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
  45   dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
  46   AC_CACHE_CHECK([whether struct lconv is properly defined],
  47     [gl_cv_sys_struct_lconv_ok],
  48     [AC_COMPILE_IFELSE(
  49        [AC_LANG_PROGRAM(
  50           [[#include <locale.h>
  51             struct lconv l;
  52             int x = sizeof (l.decimal_point);
  53             int y = sizeof (l.int_p_cs_precedes);]],
  54           [[]])],
  55        [gl_cv_sys_struct_lconv_ok=yes],
  56        [gl_cv_sys_struct_lconv_ok=no])
  57     ])
  58   if test $gl_cv_sys_struct_lconv_ok = no; then
  59     dnl On native Windows with MSVC, merely define these member names as macros.
  60     dnl This avoids trouble in C++ mode.
  61     case "$host_os" in
  62       mingw*)
  63         AC_EGREP_CPP([Special], [
  64 #ifdef _MSC_VER
  65  Special
  66 #endif
  67           ],
  68           [],
  69           [REPLACE_STRUCT_LCONV=1])
  70         ;;
  71       *) REPLACE_STRUCT_LCONV=1 ;;
  72     esac
  73   fi
  74
  75   dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
  76   gl_NEXT_HEADERS([locale.h])
  77
  78   dnl Check for declarations of anything we want to poison if the
  79   dnl corresponding gnulib module is not in use.
  80   gl_WARN_ON_USE_PREPARE([[#include <locale.h>
  81 /* Some systems provide declarations in a non-standard header.  */
  82 #if HAVE_XLOCALE_H
  83 # include <xlocale.h>
  84 #endif
  85     ]],
  86     [setlocale newlocale duplocale freelocale])
  87 ])
  88
  89 dnl Checks to determine whether the system has the locale_t type,
  90 dnl and how to obtain it.
  91 AC_DEFUN([gl_LOCALE_T],
  92 [
  93   dnl Persuade glibc and Solaris <locale.h> to define locale_t.
  94   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  95
  96   dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
  97   dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
  98   dnl itself, we assume that <xlocale.h> will do so.
  99   AC_CACHE_CHECK([whether locale.h defines locale_t],
 100     [gl_cv_header_locale_has_locale_t],
 101     [AC_COMPILE_IFELSE(
 102        [AC_LANG_PROGRAM(
 103           [[#include <locale.h>
 104             locale_t x;]],
 105           [[]])],
 106        [gl_cv_header_locale_has_locale_t=yes],
 107        [gl_cv_header_locale_has_locale_t=no])
 108     ])
 109
 110   dnl Check for <xlocale.h>.
 111   AC_CHECK_HEADERS_ONCE([xlocale.h])
 112   if test $ac_cv_header_xlocale_h = yes; then
 113     HAVE_XLOCALE_H=1
 114     if test $gl_cv_header_locale_has_locale_t = yes; then
 115       gl_cv_header_locale_h_needs_xlocale_h=no
 116     else
 117       gl_cv_header_locale_h_needs_xlocale_h=yes
 118     fi
 119     HAVE_LOCALE_T=1
 120   else
 121     HAVE_XLOCALE_H=0
 122     gl_cv_header_locale_h_needs_xlocale_h=no
 123     if test $gl_cv_header_locale_has_locale_t = yes; then
 124       HAVE_LOCALE_T=1
 125     else
 126       HAVE_LOCALE_T=0
 127     fi
 128   fi
 129   AC_SUBST([HAVE_XLOCALE_H])
 130 ])
 131
 132 AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
 133 [
 134   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
 135   AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
 136   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 137   dnl Define it also as a C macro, for the benefit of the unit tests.
 138   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 139 ])
 140
 141 AC_DEFUN([gl_LOCALE_H_DEFAULTS],
 142 [
 143   GNULIB_LOCALECONV=0;     AC_SUBST([GNULIB_LOCALECONV])
 144   GNULIB_SETLOCALE=0;      AC_SUBST([GNULIB_SETLOCALE])
 145   GNULIB_SETLOCALE_NULL=0; AC_SUBST([GNULIB_SETLOCALE_NULL])
 146   GNULIB_DUPLOCALE=0;      AC_SUBST([GNULIB_DUPLOCALE])
 147   GNULIB_LOCALENAME=0;     AC_SUBST([GNULIB_LOCALENAME])
 148   dnl Assume proper GNU behavior unless another module says otherwise.
 149   HAVE_NEWLOCALE=1;       AC_SUBST([HAVE_NEWLOCALE])
 150   HAVE_DUPLOCALE=1;       AC_SUBST([HAVE_DUPLOCALE])
 151   HAVE_FREELOCALE=1;      AC_SUBST([HAVE_FREELOCALE])
 152   REPLACE_LOCALECONV=0;   AC_SUBST([REPLACE_LOCALECONV])
 153   REPLACE_SETLOCALE=0;    AC_SUBST([REPLACE_SETLOCALE])
 154   REPLACE_NEWLOCALE=0;    AC_SUBST([REPLACE_NEWLOCALE])
 155   REPLACE_DUPLOCALE=0;    AC_SUBST([REPLACE_DUPLOCALE])
 156   REPLACE_FREELOCALE=0;   AC_SUBST([REPLACE_FREELOCALE])
 157   REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
 158 ])