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diff m4/langinfo_h.m4 @ 39226:c67645792a3d

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langinfo, nl_langinfo: Add support for alternative month names. * m4/langinfo_h.m4 (gl_LANGINFO_H): Define HAVE_LANGINFO_ALTMON. * lib/langinfo.in.h (ALTMON_1...ALTMON_12): New macros. * lib/nl_langinfo.c (rpl_nl_langinfo): Treat ALTMON_i like MON_i. * tests/test-nl_langinfo.c (main): Test ALTMON_*. * doc/posix-headers/langinfo.texi: Document support of ALTMON_*. * doc/posix-functions/nl_langinfo.texi: Likewise.
author Bruno Haible <bruno@clisp.org>
date Wed, 24 Jan 2018 10:02:17 +0100
parents 24e347e0e326
children b06060465f09
line wrap: on
line diff
--- a/m4/langinfo_h.m4	Tue Jan 23 00:42:04 2018 -0800
+++ b/m4/langinfo_h.m4	Wed Jan 24 10:02:17 2018 +0100
@@ -1,4 +1,4 @@
-# langinfo_h.m4 serial 7
+# langinfo_h.m4 serial 8
 dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -17,6 +17,7 @@
   dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.
   HAVE_LANGINFO_CODESET=0
   HAVE_LANGINFO_T_FMT_AMPM=0
+  HAVE_LANGINFO_ALTMON=0
   HAVE_LANGINFO_ERA=0
   HAVE_LANGINFO_YESEXPR=0
   AC_CHECK_HEADERS_ONCE([langinfo.h])
@@ -24,6 +25,7 @@
     HAVE_LANGINFO_H=1
     dnl Determine what <langinfo.h> defines. CODESET and ERA etc. are missing
     dnl on OpenBSD 3.8. T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3.
+    dnl ALTMON_* are missing on glibc 2.26 and many other systems.
     AC_CACHE_CHECK([whether langinfo.h defines CODESET],
       [gl_cv_header_langinfo_codeset],
       [AC_COMPILE_IFELSE(
@@ -48,6 +50,18 @@
     if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then
       HAVE_LANGINFO_T_FMT_AMPM=1
     fi
+    AC_CACHE_CHECK([whether langinfo.h defines ALTMON_1],
+      [gl_cv_header_langinfo_altmon],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = ALTMON_1;
+]])],
+         [gl_cv_header_langinfo_altmon=yes],
+         [gl_cv_header_langinfo_altmon=no])
+      ])
+    if test $gl_cv_header_langinfo_altmon = yes; then
+      HAVE_LANGINFO_ALTMON=1
+    fi
     AC_CACHE_CHECK([whether langinfo.h defines ERA],
       [gl_cv_header_langinfo_era],
       [AC_COMPILE_IFELSE(
@@ -78,6 +92,7 @@
   AC_SUBST([HAVE_LANGINFO_H])
   AC_SUBST([HAVE_LANGINFO_CODESET])
   AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM])
+  AC_SUBST([HAVE_LANGINFO_ALTMON])
   AC_SUBST([HAVE_LANGINFO_ERA])
   AC_SUBST([HAVE_LANGINFO_YESEXPR])