ngettext support

binutils has lacked proper pluralization of output messages for a long
time, for example, readelf will display information about a section
that "contains 1 entries" or "There are 1 section headers".  Fixing
this properly requires us to use ngettext, because other languages
have different rules to English.

This patch defines macros for ngettext and friends to handle builds
with --disable-nls, and tidies the existing nls support.  I've
redefined gettext rather than just defining "_" as dgettext in bfd and
opcodes in case someone wants to use gettext there (which might
conceivably happen with generated code).

bfd/
	* sysdep.h: Formatting, comment fixes.
	(gettext, ngettext): Redefine when ENABLE_NLS.
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
	(_): Define using gettext.
	(textdomain, bindtextdomain): Use safer "do nothing".
	* hosts/alphavms.h (textdomain, bindtextdomain): Likewise.
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
opcodes/
	* opintl.h: Formatting, comment fixes.
	(gettext, ngettext): Redefine when ENABLE_NLS.
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
	(_): Define using gettext.
	(textdomain, bindtextdomain): Use safer "do nothing".
binutils/
	* sysdep.h (textdomain, bindtextdomain): Use safer "do nothing".
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
gas/
	* asintl.h (textdomain, bindtextdomain): Use safer "do nothing".
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
gold/
	* system.h (textdomain, bindtextdomain): Use safer "do nothing".
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
ld/
	* ld.h (textdomain, bindtextdomain): Use safer "do nothing".
	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.

3 files changed, 51 insertions, 23 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 2362ca0..705179a 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,13 @@
+2017-11-07  Alan Modra  <amodra@gmail.com>
+
+	* sysdep.h: Formatting, comment fixes.
+	(gettext, ngettext): Redefine when ENABLE_NLS.
+	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
+	(_): Define using gettext.
+	(textdomain, bindtextdomain): Use safer "do nothing".
+	* hosts/alphavms.h (textdomain, bindtextdomain): Likewise.
+	(ngettext, dngettext, dcngettext): Define when !ENABLE_NLS.
+
 2017-11-05  Alan Modra  <amodra@gmail.com>
 
 	PR 22397
diff --git a/bfd/hosts/alphavms.h b/bfd/hosts/alphavms.h
index 3acdd51..9e61c45 100644
--- a/bfd/hosts/alphavms.h
+++ b/bfd/hosts/alphavms.h
@@ -56,7 +56,13 @@ extern char *stpcpy (char *, const char *);
 #define gettext(Msgid) (Msgid)
 #define dgettext(Domainname, Msgid) (Msgid)
 #define dcgettext(Domainname, Msgid, Category) (Msgid)
-#define textdomain(Domainname) while (0) /* nothing */
-#define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
+#define ngettext(Msgid1, Msgid2, n) \
+  (n == 1 ? Msgid1 : Msgid2)
+#define dngettext(Domainname, Msgid1, Msgid2, n) \
+  (n == 1 ? Msgid1 : Msgid2)
+#define dcngettext(Domainname, Msgid1, Msgid2, n, Category) \
+  (n == 1 ? Msgid1 : Msgid2)
+#define textdomain(Domainname) do {} while (0)
+#define bindtextdomain(Domainname, Dirname) do {} while (0)
 #define _(String) (String)
 #define N_(String) (String)
diff --git a/bfd/sysdep.h b/bfd/sysdep.h
index 6906da9..596850a 100644
--- a/bfd/sysdep.h
+++ b/bfd/sysdep.h
@@ -181,31 +181,43 @@ size_t strnlen (const char *, size_t);
 #endif
 
 #ifdef ENABLE_NLS
-#include <libintl.h>
-/* Note the use of dgetext() and PACKAGE here, rather than gettext().
-
-   This is because the code in this directory is used to build a library which
-   will be linked with code in other directories to form programs.  We want to
-   maintain a seperate translation file for this directory however, rather
-   than being forced to merge it with that of any program linked to libbfd.
-   This is a library, so it cannot depend on the catalog currently loaded.
-
-   In order to do this, we have to make sure that when we extract messages we
-   use the OPCODES domain rather than the domain of the program that included
-   the bfd library, (eg OBJDUMP).  Hence we use dgettext (PACKAGE, String)
-   and define PACKAGE to be 'bfd'.  (See the code in configure).  */
-#define _(String) dgettext (PACKAGE, String)
-#ifdef gettext_noop
-#define N_(String) gettext_noop (String)
-#else
-#define N_(String) (String)
-#endif
+# include <libintl.h>
+/* Note the redefinition of gettext and ngettext here to use PACKAGE.
+
+   This is because the code in this directory is used to build a
+   library which will be linked with code in other directories to form
+   programs.  We want to maintain a seperate translation file for this
+   directory however, rather than being forced to merge it with that
+   of any program linked to libbfd.  This is a library, so it cannot
+   depend on the catalog currently loaded.
+
+   In order to do this, we have to make sure that when we extract
+   messages we use the BFD domain rather than the domain of the
+   program that included the bfd library, (eg OBJDUMP).  Hence we use
+   dgettext (PACKAGE, String) and define PACKAGE to be 'bfd'.
+   (See the code in configure).  */
+# undef gettext
+# define gettext(Msgid) dgettext (PACKAGE, Msgid)
+# undef ngettext
+# define ngettext(Msgid1, Msgid2, n) dngettext (PACKAGE, Msgid1, Msgid2, n)
+# define _(String) gettext (String)
+# ifdef gettext_noop
+#  define N_(String) gettext_noop (String)
+# else
+#  define N_(String) (String)
+# endif
 #else
 # define gettext(Msgid) (Msgid)
 # define dgettext(Domainname, Msgid) (Msgid)
 # define dcgettext(Domainname, Msgid, Category) (Msgid)
-# define textdomain(Domainname) while (0) /* nothing */
-# define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
+# define ngettext(Msgid1, Msgid2, n) \
+  (n == 1 ? Msgid1 : Msgid2)
+# define dngettext(Domainname, Msgid1, Msgid2, n) \
+  (n == 1 ? Msgid1 : Msgid2)
+# define dcngettext(Domainname, Msgid1, Msgid2, n, Category) \
+  (n == 1 ? Msgid1 : Msgid2)
+# define textdomain(Domainname) do {} while (0)
+# define bindtextdomain(Domainname, Dirname) do {} while (0)
 # define _(String) (String)
 # define N_(String) (String)
 #endif