diff --git a/configure/os/CONFIG.linux-x86.windows-x64-mingw b/configure/os/CONFIG.linux-x86.windows-x64-mingw
index 3b5ba18b4..3becd0045 100644
--- a/configure/os/CONFIG.linux-x86.windows-x64-mingw
+++ b/configure/os/CONFIG.linux-x86.windows-x64-mingw
@@ -22,7 +22,3 @@ GNU_LDLIBS_YES =
 
 # Link with winsock2
 OP_SYS_LDLIBS = -lws2_32
-
-# Use static compiler-support libraries
-OP_SYS_LDFLAGS += -static-libgcc -static-libstdc++
-# There is no compiler flag for static libwinpthread
diff --git a/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw b/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
index 7df172901..dfc947eba 100644
--- a/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
+++ b/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
@@ -4,10 +4,10 @@
 #-------------------------------------------------------
 
 # Early versions of the MinGW cross-build tools can only build
-# static (non-DLL) libraries. For example RHEL's cross-gcc 4.4.6
-# needs these uncommented, cross-gcc 4.6.3 for Ubuntu does not:
-SHARED_LIBRARIES = NO
-STATIC_BUILD = YES
+# static (non-DLL) libraries. RHEL's cross-build of gcc 4.4.6
+# needs these uncommented, cross-gcc 4.6.3 from Ubuntu does not:
+#SHARED_LIBRARIES = NO
+#STATIC_BUILD = YES
 
 # The cross-build tools are in $(GNU_DIR)/bin
 # Default is /usr
@@ -20,3 +20,6 @@ STATIC_BUILD = YES
 CMPLR_PREFIX = i686-pc-mingw32-
 # Debian?
 #CMPLR_PREFIX = i586-mingw32msvc-
+
+# Use static compiler-support libraries
+OP_SYS_LDFLAGS += -static-libgcc -static-libstdc++
diff --git a/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw b/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
index 42cdc353b..026410cfe 100644
--- a/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
+++ b/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
@@ -18,3 +18,6 @@
 #CMPLR_PREFIX = i686-w64-mingw32-
 # RHEL:
 CMPLR_PREFIX = x86_64-w64-mingw32-
+
+# Use static compiler-support libraries
+OP_SYS_LDFLAGS += -static-libgcc -static-libstdc++
diff --git a/documentation/RELEASE_NOTES.html b/documentation/RELEASE_NOTES.html
index 41dffc8f9..1c8a906c5 100644
--- a/documentation/RELEASE_NOTES.html
+++ b/documentation/RELEASE_NOTES.html
@@ -18,6 +18,16 @@
 <h2 align="center">Changes from the 3.14 branch since 3.15.4</h2>
 <!-- Insert inherited items immediately below here ... -->
 
+<h3>MinGW Cross-builds from Linux</h3>
+
+<p>The build configuration files that allow cross-building of the 32-bit
+win32-x86-mingw cross-target have been adjusted to default to building shared
+libraries (DLLs) as this is now supported by recent MinGW compilers. The 64-bit
+windows-x64-mingw cross-target was already being built that way by default. The
+configuration options to tell the minGW cross-compiler to link programs with
+static versions of the compiler support libraries have now been moved into the
+CONFIG_SITE.linux-x86.<i>target</i> files.</p>
+
 <h3>General Time updates</h3>
 
 <p>The <tt>iocInit</tt> code now performs a sanity check of the current time
diff --git a/src/ca/legacy/gdd/gddAppTable.cc b/src/ca/legacy/gdd/gddAppTable.cc
index ee3b82a7b..2315516fe 100644
--- a/src/ca/legacy/gdd/gddAppTable.cc
+++ b/src/ca/legacy/gdd/gddAppTable.cc
@@ -418,8 +418,10 @@ gddStatus gddApplicationTypeTable::freeDD(gdd* dd)
 		}
 
 		// fprintf(stderr,"Adding DD to free_list %d\n",app);
+		attr_table[group][app].sem.lock ();
 		dd->setNext(attr_table[group][app].free_list);
 		attr_table[group][app].free_list=dd;
+		attr_table[group][app].sem.unlock ();
 	}
 	else if (attr_table[group][app].type==gddApplicationTypeNormal)
 	{
diff --git a/src/libCom/osi/os/RTEMS/osdThread.c b/src/libCom/osi/os/RTEMS/osdThread.c
index ddb2eb1c1..212372073 100644
--- a/src/libCom/osi/os/RTEMS/osdThread.c
+++ b/src/libCom/osi/os/RTEMS/osdThread.c
@@ -672,6 +672,7 @@ void epicsThreadShow (epicsThreadId id, unsigned int level)
     for (v = taskVarHead ; v != NULL ; v = v->forw) {
         if ((rtems_id)id == v->id) {
             epicsThreadShowInfo (v, level);
+            taskVarUnlock ();
             return;
         }
     }