Install errcodes.txt for use by extensions.

Maintainers of out-of-tree PLs typically need access to the set of
error codes. To avoid the need to duplicate that information in some
form in PL source trees, provide errcodes.txt as part of a server
installation.

Thomas Munro, based on a suggestion from Andrew Gierth
Discussion: https://postgr.es/m/87woykk7mu.fsf%40news-spur.riddles.org.uk

src/backend/Makefile

@@ -247,6 +247,7 @@ endif
 endif
 	$(MAKE) -C catalog install-data
 	$(MAKE) -C tsearch install-data
+	$(MAKE) -C utils install-data
 	$(INSTALL_DATA) $(srcdir)/libpq/pg_hba.conf.sample '$(DESTDIR)$(datadir)/pg_hba.conf.sample'
 	$(INSTALL_DATA) $(srcdir)/libpq/pg_ident.conf.sample '$(DESTDIR)$(datadir)/pg_ident.conf.sample'
 	$(INSTALL_DATA) $(srcdir)/utils/misc/postgresql.conf.sample '$(DESTDIR)$(datadir)/postgresql.conf.sample'
@@ -312,6 +313,7 @@ endif
 endif
 	$(MAKE) -C catalog uninstall-data
 	$(MAKE) -C tsearch uninstall-data
+	$(MAKE) -C utils uninstall-data
 	rm -f '$(DESTDIR)$(datadir)/pg_hba.conf.sample' \
 	      '$(DESTDIR)$(datadir)/pg_ident.conf.sample' \
 	      '$(DESTDIR)$(datadir)/postgresql.conf.sample' \

src/backend/utils/Makefile

@@ -46,6 +46,16 @@ else
 	sed -f $(srcdir)/Gen_dummy_probes.sed $< >$@
 endif
 
+.PHONY: install-data
+install-data: errcodes.txt installdirs
+	$(INSTALL_DATA) $(srcdir)/errcodes.txt '$(DESTDIR)$(datadir)/errcodes.txt'
+
+installdirs:
+	$(MKDIR_P) '$(DESTDIR)$(datadir)'
+
+.PHONY: uninstall-data
+uninstall-data:
+	rm -f $(addprefix '$(DESTDIR)$(datadir)'/, errcodes.txt)
 
 # fmgroids.h, fmgrprotos.h, fmgrtab.c and errcodes.h are in the
 # distribution tarball, so they are not cleaned here.

src/tools/msvc/Install.pm

@@ -134,6 +134,9 @@ sub Install
 		CopyFiles(
 			'Information schema data', $target . '/share/',
 			'src/backend/catalog/',    'sql_features.txt');
+		CopyFiles(
+			'Error code data', $target . '/share/',
+			'src/backend/utils/',    'errcodes.txt');
 		GenerateConversionScript($target);
 		GenerateTimezoneFiles($target, $conf);
 		GenerateTsearchFiles($target);