* ext/dbm/extconf.rb: weaken header/library consistency check if db is

"ndbm".  It seems several (possibly historical) distributions
  provide libndbm.  However the content of libndbm vary: Berkeley DB,
  GDBM or even 4.3BSD NDBM.  (Mandriva, Tru64 UNIX, OpenSuSE,
  SCO OpenServer, ...)
  "ndbm" is not searched automatically now (dblib doesn't contain it)
  but configure --with-dbm-type=ndbm choose libndbm and ndbm.h.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34703 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,13 @@
+Mon Feb 20 19:57:26 2012  Tanaka Akira  <akr@fsij.org>
+
+	* ext/dbm/extconf.rb: weaken header/library consistency check if db is
+	  "ndbm".  It seems several (possibly historical) distributions
+	  provide libndbm.  However the content of libndbm vary: Berkeley DB,
+	  GDBM or even 4.3BSD NDBM.  (Mandriva, Tru64 UNIX, OpenSuSE,
+	  SCO OpenServer, ...)
+	  "ndbm" is not searched automatically now (dblib doesn't contain it)
+	  but configure --with-dbm-type=ndbm choose libndbm and ndbm.h.
+
 Mon Feb 20 19:15:57 2012  Tanaka Akira  <akr@fsij.org>
 
 	* ext/dbm/extconf.rb: refine variable names.

ext/dbm/extconf.rb

@@ -182,7 +182,7 @@ def headers.db_check2(db, hdr)
   # ndbm compatibility layer of gdbm.
   # So, try to check header/library mismatch.
   #
-  if hdr == 'ndbm.h' && db != 'libc'
+  if hdr == 'ndbm.h' && db != 'libc' && db != 'ndbm'
     if /\Adb\d?\z/ !~ db && have_db_header
       return false
     end