m4/locale_h.m4

   1 # locale_h.m4 serial 19
   2 dnl Copyright (C) 2007, 2009-2013 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   dnl Solaris 11 2011-11 defines the int_p_*, int_n_* members of 'struct lconv'
  21   dnl only if _LCONV_C99 is defined.
  22   AC_REQUIRE([AC_CANONICAL_HOST])
  23   case "$host_os" in
  24     solaris*)
  25       AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
  26       ;;
  27   esac
  28
  29   AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
  30     [gl_cv_header_locale_h_posix2001],
  31     [AC_COMPILE_IFELSE(
  32        [AC_LANG_PROGRAM(
  33           [[#include <locale.h>
  34             int x = LC_MESSAGES;
  35             int y = sizeof (((struct lconv *) 0)->decimal_point);]],
  36           [[]])],
  37        [gl_cv_header_locale_h_posix2001=yes],
  38        [gl_cv_header_locale_h_posix2001=no])])
  39
  40   dnl Check for <xlocale.h>.
  41   AC_CHECK_HEADERS_ONCE([xlocale.h])
  42   if test $ac_cv_header_xlocale_h = yes; then
  43     HAVE_XLOCALE_H=1
  44     dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
  45     dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
  46     dnl itself, we assume that <xlocale.h> will do so.
  47     AC_CACHE_CHECK([whether locale.h defines locale_t],
  48       [gl_cv_header_locale_has_locale_t],
  49       [AC_COMPILE_IFELSE(
  50          [AC_LANG_PROGRAM(
  51             [[#include <locale.h>
  52               locale_t x;]],
  53             [[]])],
  54          [gl_cv_header_locale_has_locale_t=yes],
  55          [gl_cv_header_locale_has_locale_t=no])
  56       ])
  57     if test $gl_cv_header_locale_has_locale_t = yes; then
  58       gl_cv_header_locale_h_needs_xlocale_h=no
  59     else
  60       gl_cv_header_locale_h_needs_xlocale_h=yes
  61     fi
  62   else
  63     HAVE_XLOCALE_H=0
  64     gl_cv_header_locale_h_needs_xlocale_h=no
  65   fi
  66   AC_SUBST([HAVE_XLOCALE_H])
  67
  68   dnl Check whether 'struct lconv' is complete.
  69   dnl Bionic libc's 'struct lconv' is just a dummy.
  70   dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
  71   dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
  72   AC_CACHE_CHECK([whether struct lconv is properly defined],
  73     [gl_cv_sys_struct_lconv_ok],
  74     [AC_COMPILE_IFELSE(
  75        [AC_LANG_PROGRAM(
  76           [[#include <locale.h>
  77             struct lconv l;
  78             int x = sizeof (l.decimal_point);
  79             int y = sizeof (l.int_p_cs_precedes);]],
  80           [[]])],
  81        [gl_cv_sys_struct_lconv_ok=yes],
  82        [gl_cv_sys_struct_lconv_ok=no])
  83     ])
  84   if test $gl_cv_sys_struct_lconv_ok = no; then
  85     REPLACE_STRUCT_LCONV=1
  86   fi
  87
  88   dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
  89   gl_NEXT_HEADERS([locale.h])
  90
  91   dnl Check for declarations of anything we want to poison if the
  92   dnl corresponding gnulib module is not in use.
  93   gl_WARN_ON_USE_PREPARE([[#include <locale.h>
  94 /* Some systems provide declarations in a non-standard header.  */
  95 #if HAVE_XLOCALE_H
  96 # include <xlocale.h>
  97 #endif
  98     ]],
  99     [setlocale duplocale])
 100 ])
 101
 102 AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
 103 [
 104   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
 105   AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
 106   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 107   dnl Define it also as a C macro, for the benefit of the unit tests.
 108   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 109 ])
 110
 111 AC_DEFUN([gl_LOCALE_H_DEFAULTS],
 112 [
 113   GNULIB_LOCALECONV=0; AC_SUBST([GNULIB_LOCALECONV])
 114   GNULIB_SETLOCALE=0;  AC_SUBST([GNULIB_SETLOCALE])
 115   GNULIB_DUPLOCALE=0;  AC_SUBST([GNULIB_DUPLOCALE])
 116   dnl Assume proper GNU behavior unless another module says otherwise.
 117   HAVE_DUPLOCALE=1;       AC_SUBST([HAVE_DUPLOCALE])
 118   REPLACE_LOCALECONV=0;   AC_SUBST([REPLACE_LOCALECONV])
 119   REPLACE_SETLOCALE=0;    AC_SUBST([REPLACE_SETLOCALE])
 120   REPLACE_DUPLOCALE=0;    AC_SUBST([REPLACE_DUPLOCALE])
 121   REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
 122 ])