diff --git a/configure/CONFIG_COMMON b/configure/CONFIG_COMMON
index d4ac8d393..412edc212 100644
--- a/configure/CONFIG_COMMON
+++ b/configure/CONFIG_COMMON
@@ -371,6 +371,7 @@ INSTALL_LIB_INSTALLS = $(addprefix $(INSTALL_LIB)/,$(notdir $(LIB_INSTALLS)))
 # Installed file permissions
 BIN_PERMISSIONS = 555
 LIB_PERMISSIONS = 444
+SHRLIB_PERMISSIONS = 555
 INSTALL_PERMISSIONS = 444
 
 #---------------------------------------------------------------
diff --git a/configure/RULES_BUILD b/configure/RULES_BUILD
index ae96d5565..561ef9f88 100644
--- a/configure/RULES_BUILD
+++ b/configure/RULES_BUILD
@@ -382,7 +382,7 @@ $(INSTALL_LIB)/%.lib: %.lib
 
 $(INSTALL_SHRLIBS): $(INSTALL_SHRLIB)/%: %
 	$(ECHO) "Installing shared library $@"
-	@$(INSTALL_LIBRARY) -d -m $(LIB_PERMISSIONS) $< $(INSTALL_SHRLIB)
+	@$(INSTALL_LIBRARY) -d -m $(SHRLIB_PERMISSIONS) $< $(INSTALL_SHRLIB)
 ifneq ($(SHRLIB_SUFFIX),.dll)
 ifneq (,$(strip $(SHRLIB_VERSION)))
 	@$(RM) $(subst .$(SHRLIB_VERSION),,$@)
diff --git a/cygwin-shrlib.patch b/cygwin-shrlib.patch
new file mode 100644
index 000000000..abf8ab7b1
--- /dev/null
+++ b/cygwin-shrlib.patch
@@ -0,0 +1,25 @@
+=== modified file 'configure/CONFIG_COMMON'
+--- configure/CONFIG_COMMON	2012-05-01 15:15:45 +0000
++++ configure/CONFIG_COMMON	2012-12-05 20:34:18 +0000
+@@ -371,6 +371,7 @@
+ # Installed file permissions
+ BIN_PERMISSIONS = 555
+ LIB_PERMISSIONS = 444
++SHRLIB_PERMISSIONS = 555
+ INSTALL_PERMISSIONS = 444
+ 
+ #---------------------------------------------------------------
+
+=== modified file 'configure/RULES_BUILD'
+--- configure/RULES_BUILD	2012-08-07 15:37:13 +0000
++++ configure/RULES_BUILD	2012-12-05 20:34:18 +0000
+@@ -383,7 +383,7 @@
+ 
+ $(INSTALL_SHRLIBS): $(INSTALL_SHRLIB)/%: %
+ 	$(ECHO) "Installing shared library $@"
+-	@$(INSTALL_LIBRARY) -d -m $(LIB_PERMISSIONS) $< $(INSTALL_SHRLIB)
++	@$(INSTALL_LIBRARY) -d -m $(SHRLIB_PERMISSIONS) $< $(INSTALL_SHRLIB)
+ ifneq ($(SHRLIB_SUFFIX),$(SHRLIB_SUFFIX_BASE))
+ ifneq (,$(strip $(SHRLIB_VERSION)))
+ 	@$(RM) $(subst $(SHRLIB_SUFFIX),$(SHRLIB_SUFFIX_BASE),$@)
+