* dllfixdbg: New perl script.

* configure.in: Detect objcopy, objdump, strip.
* configure: Regenerate.
* Makefile.in: Pass target objcopy/objdump to new dllfixdbg script.  Remove
previous perl check.
* cygwin.sc: Add .gnu_debuglink_overlay section for eventual replacement with
.gnu_debuglink section.  Revert move of cygheap to end of image.

6 files changed, 402 insertions, 104 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index c4bd70cca..ea4b04680 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,14 @@
+2005-08-07  Christopher Faylor  <cgf@timesys.com>
+
+	* dllfixdbg: New perl script.
+	* configure.in: Detect objcopy, objdump, strip.
+	* configure: Regenerate.
+	* Makefile.in: Pass target objcopy/objdump to new dllfixdbg script.
+	Remove previous perl check.
+	* cygwin.sc: Add .gnu_debuglink_overlay section for eventual
+	replacement with .gnu_debuglink section.  Revert move of cygheap to end
+	of image.
+
 2005-08-06  Corinna Vinschen  <corinna@vinschen.de>
 
 	* Makefile.in: Allow previous patch to work in a 64 bit environment.
diff --git a/winsup/cygwin/Makefile.in b/winsup/cygwin/Makefile.in
index e968f72a3..ebf5e2632 100644
--- a/winsup/cygwin/Makefile.in
+++ b/winsup/cygwin/Makefile.in
@@ -1,5 +1,5 @@
 # Makefile.in for Cygwin.
-# Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
+# Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
 #
 # This file is part of Cygwin.
 #
@@ -65,6 +65,9 @@ DLLTOOL:=@DLLTOOL@
 WINDRES:=@WINDRES@
 AS:=@AS@
 NM:=@NM@
+OBJCOPY:=@OBJCOPY@
+OBJDUMP:=@OBJDUMP@
+STRIP:=@STRIP@
 LDSCRIPT:=cygwin.sc
 
 #
@@ -366,18 +369,13 @@ maintainer-clean realclean: clean
 
 
 # Rule to build cygwin.dll
-$(TEST_DLL_NAME): $(LDSCRIPT) $(DLL_OFILES) $(DLL_IMPORTS) $(LIBSERVER) $(LIBC) $(LIBM) $(API_VER) Makefile winver_stamp
+$(TEST_DLL_NAME): $(LDSCRIPT) dllfixdbg $(DLL_OFILES) $(DLL_IMPORTS) $(LIBSERVER) $(LIBC) $(LIBM) $(API_VER) Makefile winver_stamp
 	$(CXX) $(CXXFLAGS) -Wl,--gc-sections $(nostdlib) -Wl,-T$(firstword $^) \
 	-Wl,--heap=0 -Wl,--out-implib,cygdll.a -shared -o $@ \
 	-e $(DLL_ENTRY) $(DEF_FILE) $(DLL_OFILES) version.o winver.o \
 	$(MALLOC_OBJ) $(LIBSERVER) $(LIBM) $(LIBC) \
 	-lgcc $(DLL_IMPORTS)
-	@$(NM) $@ | perl -Minteger -n -e '/^((0{8})?61[0-9a-f]+) A __cygheap_end/ and do {$$cygheap_end = $$1; exit;};\
-	    END { \
-		die "ERROR: _cygheap_end not found in $@\n" unless defined($$cygheap_end); \
-		die "ERROR: _cygheap_end is not on a 64k boundary (0x$$cygheap_end)!\n" if (hex($$cygheap_end) & 0xffff);\
-		exit 0; \
-	    }'
+	@$(word 2,$^) $(OBJDUMP) $(OBJCOPY) $@ ${patsubst %0.dll,%1.dbg,$@}
 	@ln -f $@ new-$(DLL_NAME)
 
 # Rule to build libcygwin.a
diff --git a/winsup/cygwin/configure b/winsup/cygwin/configure
index 9f778b846..e2e87da3d 100755
--- a/winsup/cygwin/configure
+++ b/winsup/cygwin/configure
@@ -1147,70 +1147,70 @@ else
 fi
 fi
 
-# Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
-set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+# Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dlltool; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
 echo "configure:1154: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test -n "$RANLIB"; then
-  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+  if test -n "$DLLTOOL"; then
+  ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
 else
   IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
   ac_dummy="$PATH"
   for ac_dir in $ac_dummy; do
     test -z "$ac_dir" && ac_dir=.
     if test -f $ac_dir/$ac_word; then
-      ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+      ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
       break
     fi
   done
   IFS="$ac_save_ifs"
 fi
 fi
-RANLIB="$ac_cv_prog_RANLIB"
-if test -n "$RANLIB"; then
-  echo "$ac_t""$RANLIB" 1>&6
+DLLTOOL="$ac_cv_prog_DLLTOOL"
+if test -n "$DLLTOOL"; then
+  echo "$ac_t""$DLLTOOL" 1>&6
 else
   echo "$ac_t""no" 1>&6
 fi
 
 
-if test -z "$ac_cv_prog_RANLIB"; then
+if test -z "$ac_cv_prog_DLLTOOL"; then
 if test -n "$ac_tool_prefix"; then
-  # Extract the first word of "ranlib", so it can be a program name with args.
-set dummy ranlib; ac_word=$2
+  # Extract the first word of "dlltool", so it can be a program name with args.
+set dummy dlltool; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
 echo "configure:1186: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test -n "$RANLIB"; then
-  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+  if test -n "$DLLTOOL"; then
+  ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
 else
   IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
   ac_dummy="$PATH"
   for ac_dir in $ac_dummy; do
     test -z "$ac_dir" && ac_dir=.
     if test -f $ac_dir/$ac_word; then
-      ac_cv_prog_RANLIB="ranlib"
+      ac_cv_prog_DLLTOOL="dlltool"
       break
     fi
   done
   IFS="$ac_save_ifs"
-  test -z "$ac_cv_prog_RANLIB" && ac_cv_prog_RANLIB="ranlib"
+  test -z "$ac_cv_prog_DLLTOOL" && ac_cv_prog_DLLTOOL="dlltool"
 fi
 fi
-RANLIB="$ac_cv_prog_RANLIB"
-if test -n "$RANLIB"; then
-  echo "$ac_t""$RANLIB" 1>&6
+DLLTOOL="$ac_cv_prog_DLLTOOL"
+if test -n "$DLLTOOL"; then
+  echo "$ac_t""$DLLTOOL" 1>&6
 else
   echo "$ac_t""no" 1>&6
 fi
 
 else
-  RANLIB="ranlib"
+  DLLTOOL="dlltool"
 fi
 fi
 
@@ -1348,77 +1348,278 @@ else
 fi
 fi
 
-# Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
-set dummy ${ac_tool_prefix}dlltool; ac_word=$2
+# Extract the first word of "${ac_tool_prefix}objcopy", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objcopy; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
 echo "configure:1355: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
+if eval "test \"`echo '$''{'ac_cv_prog_OBJCOPY'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test -n "$DLLTOOL"; then
-  ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
+  if test -n "$OBJCOPY"; then
+  ac_cv_prog_OBJCOPY="$OBJCOPY" # Let the user override the test.
 else
   IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
   ac_dummy="$PATH"
   for ac_dir in $ac_dummy; do
     test -z "$ac_dir" && ac_dir=.
     if test -f $ac_dir/$ac_word; then
-      ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
+      ac_cv_prog_OBJCOPY="${ac_tool_prefix}objcopy"
       break
     fi
   done
   IFS="$ac_save_ifs"
 fi
 fi
-DLLTOOL="$ac_cv_prog_DLLTOOL"
-if test -n "$DLLTOOL"; then
-  echo "$ac_t""$DLLTOOL" 1>&6
+OBJCOPY="$ac_cv_prog_OBJCOPY"
+if test -n "$OBJCOPY"; then
+  echo "$ac_t""$OBJCOPY" 1>&6
 else
   echo "$ac_t""no" 1>&6
 fi
 
 
-if test -z "$ac_cv_prog_DLLTOOL"; then
+if test -z "$ac_cv_prog_OBJCOPY"; then
 if test -n "$ac_tool_prefix"; then
-  # Extract the first word of "dlltool", so it can be a program name with args.
-set dummy dlltool; ac_word=$2
+  # Extract the first word of "objcopy", so it can be a program name with args.
+set dummy objcopy; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
 echo "configure:1387: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
+if eval "test \"`echo '$''{'ac_cv_prog_OBJCOPY'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-  if test -n "$DLLTOOL"; then
-  ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
+  if test -n "$OBJCOPY"; then
+  ac_cv_prog_OBJCOPY="$OBJCOPY" # Let the user override the test.
 else
   IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
   ac_dummy="$PATH"
   for ac_dir in $ac_dummy; do
     test -z "$ac_dir" && ac_dir=.
     if test -f $ac_dir/$ac_word; then
-      ac_cv_prog_DLLTOOL="dlltool"
+      ac_cv_prog_OBJCOPY="objcopy"
       break
     fi
   done
   IFS="$ac_save_ifs"
-  test -z "$ac_cv_prog_DLLTOOL" && ac_cv_prog_DLLTOOL="dlltool"
+  test -z "$ac_cv_prog_OBJCOPY" && ac_cv_prog_OBJCOPY="objcopy"
 fi
 fi
-DLLTOOL="$ac_cv_prog_DLLTOOL"
-if test -n "$DLLTOOL"; then
-  echo "$ac_t""$DLLTOOL" 1>&6
+OBJCOPY="$ac_cv_prog_OBJCOPY"
+if test -n "$OBJCOPY"; then
+  echo "$ac_t""$OBJCOPY" 1>&6
 else
   echo "$ac_t""no" 1>&6
 fi
 
 else
-  DLLTOOL="dlltool"
+  OBJCOPY="objcopy"
+fi
+fi
+
+# Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1422: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_OBJDUMP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$OBJDUMP"; then
+  ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+OBJDUMP="$ac_cv_prog_OBJDUMP"
+if test -n "$OBJDUMP"; then
+  echo "$ac_t""$OBJDUMP" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+
+if test -z "$ac_cv_prog_OBJDUMP"; then
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1454: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_OBJDUMP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$OBJDUMP"; then
+  ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_OBJDUMP="objdump"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_prog_OBJDUMP" && ac_cv_prog_OBJDUMP="objdump"
+fi
+fi
+OBJDUMP="$ac_cv_prog_OBJDUMP"
+if test -n "$OBJDUMP"; then
+  echo "$ac_t""$OBJDUMP" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+else
+  OBJDUMP="objdump"
+fi
+fi
+
+# Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1489: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+RANLIB="$ac_cv_prog_RANLIB"
+if test -n "$RANLIB"; then
+  echo "$ac_t""$RANLIB" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+
+if test -z "$ac_cv_prog_RANLIB"; then
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1521: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_RANLIB="ranlib"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_prog_RANLIB" && ac_cv_prog_RANLIB="ranlib"
+fi
+fi
+RANLIB="$ac_cv_prog_RANLIB"
+if test -n "$RANLIB"; then
+  echo "$ac_t""$RANLIB" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+else
+  RANLIB="ranlib"
+fi
+fi
+
+# Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1556: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_STRIP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+STRIP="$ac_cv_prog_STRIP"
+if test -n "$STRIP"; then
+  echo "$ac_t""$STRIP" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+
+if test -z "$ac_cv_prog_STRIP"; then
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1588: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_STRIP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_STRIP="strip"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_prog_STRIP" && ac_cv_prog_STRIP="strip"
+fi
+fi
+STRIP="$ac_cv_prog_STRIP"
+if test -n "$STRIP"; then
+  echo "$ac_t""$STRIP" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+else
+  STRIP="strip"
 fi
 fi
 
 # Extract the first word of "${ac_tool_prefix}windres", so it can be a program name with args.
 set dummy ${ac_tool_prefix}windres; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1422: checking for $ac_word" >&5
+echo "configure:1623: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_WINDRES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1450,7 +1651,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "windres", so it can be a program name with args.
 set dummy windres; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1454: checking for $ac_word" >&5
+echo "configure:1655: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_WINDRES'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1484,7 +1685,7 @@ fi
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1488: checking how to run the C preprocessor" >&5
+echo "configure:1689: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1499,13 +1700,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1503 "configure"
+#line 1704 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1509: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1710: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1516,13 +1717,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1520 "configure"
+#line 1721 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1526: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1727: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1533,13 +1734,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1537 "configure"
+#line 1738 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1543: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1744: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1566,19 +1767,19 @@ echo "$ac_t""$CPP" 1>&6
 # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
 echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
-echo "configure:1570: checking for working alloca.h" >&5
+echo "configure:1771: checking for working alloca.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1575 "configure"
+#line 1776 "configure"
 #include "confdefs.h"
 #include <alloca.h>
 int main() {
 char *p = alloca(2 * sizeof(int));
 ; return 0; }
 EOF
-if { (eval echo configure:1582: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1783: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_header_alloca_h=yes
 else
@@ -1599,12 +1800,12 @@ EOF
 fi
 
 echo $ac_n "checking for alloca""... $ac_c" 1>&6
-echo "configure:1603: checking for alloca" >&5
+echo "configure:1804: checking for alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1608 "configure"
+#line 1809 "configure"
 #include "confdefs.h"
 
 #ifdef __GNUC__
@@ -1632,7 +1833,7 @@ int main() {
 char *p = (char *) alloca(1);
 ; return 0; }
 EOF
-if { (eval echo configure:1636: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1837: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_func_alloca_works=yes
 else
@@ -1664,12 +1865,12 @@ EOF
 
 
 echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
-echo "configure:1668: checking whether alloca needs Cray hooks" >&5
+echo "configure:1869: checking whether alloca needs Cray hooks" >&5
 if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1673 "configure"
+#line 1874 "configure"
 #include "confdefs.h"
 #if defined(CRAY) && ! defined(CRAY2)
 webecray
@@ -1694,12 +1895,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
 if test $ac_cv_os_cray = yes; then
 for ac_func in _getb67 GETB67 getb67; do
   echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1698: checking for $ac_func" >&5
+echo "configure:1899: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1703 "configure"
+#line 1904 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1722,7 +1923,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1726: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1927: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1749,7 +1950,7 @@ done
 fi
 
 echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
-echo "configure:1753: checking stack direction for C alloca" >&5
+echo "configure:1954: checking stack direction for C alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1757,7 +1958,7 @@ else
   ac_cv_c_stack_direction=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 1761 "configure"
+#line 1962 "configure"
 #include "confdefs.h"
 find_stack_direction ()
 {
@@ -1776,7 +1977,7 @@ main ()
   exit (find_stack_direction() < 0);
 }
 EOF
-if { (eval echo configure:1780: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1981: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_stack_direction=1
 else
@@ -1798,7 +1999,7 @@ EOF
 fi
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:1802: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:2003: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1835,7 +2036,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 1839 "configure"
+#line 2040 "configure"
 #include "confdefs.h"
 
 #include <string.h>
@@ -1848,7 +2049,7 @@ int main() {
  
 ; return 0; }
 EOF
-if { (eval echo configure:1852: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2053: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   use_builtin_memset=yes
 else
@@ -2103,10 +2304,13 @@ s%@all_host@%$all_host%g
 s%@install_host@%$install_host%g
 s%@AR@%$AR%g
 s%@AS@%$AS%g
-s%@RANLIB@%$RANLIB%g
+s%@DLLTOOL@%$DLLTOOL%g
 s%@LD@%$LD%g
 s%@NM@%$NM%g
-s%@DLLTOOL@%$DLLTOOL%g
+s%@OBJCOPY@%$OBJCOPY%g
+s%@OBJDUMP@%$OBJDUMP%g
+s%@RANLIB@%$RANLIB%g
+s%@STRIP@%$STRIP%g
 s%@WINDRES@%$WINDRES%g
 s%@CPP@%$CPP%g
 s%@ALLOCA@%$ALLOCA%g
diff --git a/winsup/cygwin/configure.in b/winsup/cygwin/configure.in
index db7dc454c..2b0d867dc 100644
--- a/winsup/cygwin/configure.in
+++ b/winsup/cygwin/configure.in
@@ -91,10 +91,13 @@ AC_SUBST(install_host)
 
 AC_CHECK_TOOL(AR, ar, ar)
 AC_CHECK_TOOL(AS, as, as)
-AC_CHECK_TOOL(RANLIB, ranlib, ranlib)
+AC_CHECK_TOOL(DLLTOOL, dlltool, dlltool)
 AC_CHECK_TOOL(LD, ld, ld)
 AC_CHECK_TOOL(NM, nm, nm)
-AC_CHECK_TOOL(DLLTOOL, dlltool, dlltool)
+AC_CHECK_TOOL(OBJCOPY, objcopy, objcopy)
+AC_CHECK_TOOL(OBJDUMP, objdump, objdump)
+AC_CHECK_TOOL(RANLIB, ranlib, ranlib)
+AC_CHECK_TOOL(STRIP, strip, strip)
 AC_CHECK_TOOL(WINDRES, windres, windres)
 
 AC_ALLOCA
diff --git a/winsup/cygwin/cygwin.sc b/winsup/cygwin/cygwin.sc
index e2a83d05d..1bfbd794a 100644
--- a/winsup/cygwin/cygwin.sc
+++ b/winsup/cygwin/cygwin.sc
@@ -70,6 +70,47 @@ SECTIONS
   {
     *(.cygwin_dll_common)
   }
+  .gnu_debuglink_overlay ALIGN(__section_alignment__) (NOLOAD):
+  {
+    BYTE(0)	/* c */
+    BYTE(0)	/* y */
+    BYTE(0)	/* g */
+    BYTE(0)	/* w */
+    BYTE(0)	/* i */
+    BYTE(0)	/* n */
+    BYTE(0)	/* 1 */
+    BYTE(0)	/* . */
+    BYTE(0)	/* d */
+    BYTE(0)	/* b */
+    BYTE(0)	/* g */
+    BYTE(0)	/* \0 */
+    LONG(0)	/* checksum */
+  }
+  .idata ALIGN(__section_alignment__) :
+  {
+    /* This cannot currently be handled with grouped sections.
+	See pe.em:sort_sections.  */
+    SORT(*)(.idata$2)
+    SORT(*)(.idata$3)
+    /* These zeroes mark the end of the import list.  */
+    LONG (0); LONG (0); LONG (0); LONG (0); LONG (0);
+    SORT(*)(.idata$4)
+    SORT(*)(.idata$5)
+    SORT(*)(.idata$6)
+    SORT(*)(.idata$7)
+    . = ALIGN(16);
+    __cygheap_start = ABSOLUTE(.);
+    . = ALIGN(0x10000);
+  }
+  .cygheap ALIGN(__section_alignment__) :
+  {
+    __cygheap_mid = .;
+    *(.cygheap)
+    . = ALIGN(512 * 1024, 0x10000);
+  }
+  __cygheap_end = ABSOLUTE(.);
+  __cygheap_end1 = __cygheap_mid + SIZEOF(.cygheap);
+  __cygwin_debug_size = SIZEOF(.gnu_debuglink);
   /DISCARD/ :
   {
     *(.debug$S)
@@ -98,28 +139,4 @@ SECTIONS
   .debug_macinfo  ALIGN(__section_alignment__) (NOLOAD) : { *(.debug_macinfo) }
   .debug_macinfo  ALIGN(__section_alignment__) (NOLOAD) : { *(.debug_macinfo) }
   .debug_ranges   ALIGN(__section_alignment__) (NOLOAD) : { *(.debug_ranges) }
-  .idata ALIGN(__section_alignment__) :
-  {
-    /* This cannot currently be handled with grouped sections.
-	See pe.em:sort_sections.  */
-    SORT(*)(.idata$2)
-    SORT(*)(.idata$3)
-    /* These zeroes mark the end of the import list.  */
-    LONG (0); LONG (0); LONG (0); LONG (0); LONG (0);
-    SORT(*)(.idata$4)
-    SORT(*)(.idata$5)
-    SORT(*)(.idata$6)
-    SORT(*)(.idata$7)
-    . = ALIGN(16);
-    __cygheap_start = ABSOLUTE(.);
-    . = ALIGN(0x10000);
-  }
-  .cygheap ALIGN(__section_alignment__) :
-  {
-    __cygheap_mid = .;
-    *(.cygheap)
-    . = ALIGN(512 * 1024, 0x10000);
-  }
-  __cygheap_end = ABSOLUTE(.);
-  __cygheap_end1 = __cygheap_mid + SIZEOF(.cygheap);
 }
diff --git a/winsup/cygwin/dllfixdbg b/winsup/cygwin/dllfixdbg
new file mode 100755
index 000000000..1e467d37c
--- /dev/null
+++ b/winsup/cygwin/dllfixdbg
@@ -0,0 +1,65 @@
+#!/usr/bin/perl
+use integer;
+use strict;
+sub xit($@);
+my $strip = $ARGV[0] eq '-s';
+shift if $strip;
+my $objdump = shift;
+my @objcopy = ((shift));
+my $dll = shift;
+my $dbg = shift;
+xit 0, @objcopy, '--only-keep-debug', $dll, $dbg;
+xit 0, @objcopy, '-g', '--add-gnu-debuglink=' . $dbg, $dll;
+open(OBJDUMP, '-|', "$objdump --headers $dll");
+my %section;
+while (<OBJDUMP>) {
+    my ($idx, $name, $size, $vma, $lma, $fileoff, $algn) = /^\s*(\d+)\s+(\.\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s*$/;
+    if ($name eq '.gnu_debuglink') {
+	push(@objcopy, '--set-section-flag', '.gnu_debuglink=contents,readonly,debug,noload');
+    } elsif ($name eq '.gnu_debuglink_overlay') {
+	push (@objcopy, '-R', '.gnu_debuglink_overlay');
+	$section{'.gnu_debuglink'}{-idx} = $idx if $section{'.gnu_debuglink'};
+	next;
+    }
+    defined($idx) and
+      $section{$name} = {-idx=>int($idx), -size=>hex($size), -vma=>hex($vma), -lma=>hex($lma), -fileoff=>hex($fileoff),
+	  -algn=>0x00001000};
+}
+close OBJDUMP;
+my $vma;
+for my $k (sort {$section{$a}{-idx} <=> $section{$b}{-idx}} keys %section) {
+    if ($strip && $k =~ /\.(?:stab|debug)/o) {
+	push(@objcopy, '-R', $k);
+	next;
+    }
+    if (!defined($vma)) {
+	$vma = $section{$k}{-vma};
+    }
+    if ($vma != $section{$k}{-vma}) {
+        my $newvma = align($vma, $section{$k}{-algn});
+	if ($newvma != $vma) {
+	    printf STDERR "$0: ERROR $k VMA 0x%08x != 0x%08x\n", $vma, $newvma;
+	    exit 1;
+	}
+	push(@objcopy, '--change-section-address', sprintf "$k=0x%08x", $vma);
+    }
+    $vma = align($vma + $section{$k}{-size}, $section{$k}{-algn});
+}
+warn "$0: ERROR final VMA (" . sprintf("0x%08x", $vma) . ") not on 64K boundary\n" if $vma != align($vma, 64 * 1024);
+push(@objcopy, $dll, @ARGV);
+xit 1, @objcopy;
+sub align {
+    my $n = $_[0];
+    my $align = $_[1] - 1;
+    return ($n + $align) & ~$align;
+}
+
+sub xit($@) {
+    my $execit = shift;
+    print "+ @_\n";
+    if ($execit) {
+	exec @_ or die "$0: couldn't exec $_[0] - $!\n";
+    } else {
+	system @_ and die "$0: couldn't exec $_[0] - $!\n";
+    }
+}