* configure.in (RUBY_PROG_GNU_LD): check whether the linker is GNU ld.

* ext/extmk.rb (create_makefile): add -Wl,-no-undefined to $DLDFLAGS
  on Linux if GNU ld is used and --enable-shared is specified.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2931 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Fri Oct  4 13:05:58 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* configure.in (RUBY_PROG_GNU_LD): check whether the linker is GNU ld.
+
+	* ext/extmk.rb (create_makefile): add -Wl,-no-undefined to $DLDFLAGS
+	  on Linux if GNU ld is used and --enable-shared is specified.
+
 Thu Oct  3 20:22:11 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
 
 	* bcc32/mkexports.rb: to work on cygwin via telnet.

configure.in

@@ -32,6 +32,17 @@ AC_SUBST(CPPOUTFILE)
 rm -f conftest*])
 ])
 
+AC_DEFUN(RUBY_PROG_GNU_LD,
+[AC_CACHE_CHECK(whether the linker is GNU ld, rb_cv_prog_gnu_ld,
+[if `$CC --print-prog-name=ld` -v 2>&1 | grep "GNU ld" > /dev/null; then
+  rb_cv_prog_gnu_ld=yes
+else
+  rb_cv_prog_gnu_ld=no
+fi
+])
+GNU_LD=$rb_cv_prog_gnu_ld
+AC_SUBST(GNU_LD)])
+
 rb_version=`grep RUBY_VERSION $srcdir/version.h`
 MAJOR=`expr "$rb_version" : '#define RUBY_VERSION "\([0-9][0-9]*\)\.[0-9][0-9]*\.[0-9][0-9]*"'`
 MINOR=`expr "$rb_version" : '#define RUBY_VERSION "[0-9][0-9]*\.\([0-9][0-9]*\)\.[0-9][0-9]*"'`
@@ -127,6 +138,7 @@ fi
 AC_PROG_CC
 AC_PROG_GCC_TRADITIONAL
 
+RUBY_PROG_GNU_LD
 RUBY_CPPOUTFILE
 
 OUTFLAG='-o '
@@ -729,7 +741,7 @@ if test "$with_dln_a_out" != yes; then
 			rb_cv_dlopen=yes;;
 	solaris*) 	if test "$GCC" = yes; then
 			   LDSHARED='$(CC) -Wl,-G'
-			   if `$CC --print-prog-name=ld` -v 2>&1 | grep "GNU ld" > /dev/null; then
+			   if test $rb_cv_prog_gnu_ld = yes; then
 	 		       LDFLAGS="-Wl,-E"
 			       LDSHARED="$LDSHARED -shared"
 			   fi

ext/extmk.rb

@@ -44,6 +44,7 @@ require 'shellwords'
 $topdir = File.expand_path(".")
 $top_srcdir = srcdir
 
+# avoid warning for $VERBOSE mode
 Object.class_eval do remove_method :create_makefile end
 
 def create_makefile(target)
@@ -64,6 +65,9 @@ def create_makefile(target)
   end
 
   $DLDFLAGS = CONFIG["DLDFLAGS"].dup
+  if /linux/ =~ RUBY_PLATFORM and $configure_args['--enable-shared'] and CONFIG["GNU_LD"] == "yes"
+    $DLDFLAGS << " -Wl,-no-undefined"
+  end
 
   if $configure_args['--enable-shared'] or CONFIG["LIBRUBY"] != CONFIG["LIBRUBY_A"]
     $libs = CONFIG["LIBRUBYARG"] + " " + $libs

version.h

@@ -1,4 +1,4 @@
 #define RUBY_VERSION "1.7.3"
-#define RUBY_RELEASE_DATE "2002-10-03"
+#define RUBY_RELEASE_DATE "2002-10-04"
 #define RUBY_VERSION_CODE 173
-#define RUBY_RELEASE_CODE 20021003
+#define RUBY_RELEASE_CODE 20021004