diff --git a/externals/Makefile b/externals/Makefile
index e60a73c990d0b1ea8c67d95289f2d3724ecfb8d6..c2bf4caad64ed740c5dae7c7573e9756087ad2fe 100644
--- a/externals/Makefile
+++ b/externals/Makefile
@@ -137,7 +137,9 @@ LIB_TARGETS = adaptive arraysize autotune bassemu boids bsaylor comport creb cxc
 
 # this is for libraries that don't compile (yet) on all platforms
 ifeq ($(OS_NAME),windows)
-  LIB_TARGETS += gem
+  ifneq ($(INCREMENTAL),yes)
+    LIB_TARGETS += gem
+  endif
 else
   ifeq ($(OS_NAME),darwin)
 # on Mac OS X 10.6/Snow Leopard don't build hid since it needs Carbon
diff --git a/l2ork_addons/tar_em_up.sh b/l2ork_addons/tar_em_up.sh
index 392baf1edac4128dc04930dcad1a4ffa6bc1a441..4d13c2c9c695252b4560ba5ec8908b85d00eee67 100755
--- a/l2ork_addons/tar_em_up.sh
+++ b/l2ork_addons/tar_em_up.sh
@@ -315,7 +315,7 @@ then
 	if [[ $os == "win" ]]; then
 		echo "Making Windows package..."
 		echo `pwd`
-		make install && make package
+		make install INCREMENTAL=$INCREMENTAL && make package
 	elif [[ $os == "osx" ]]; then
 		echo "Making OSX package (dmg)..."
 		echo `pwd`
diff --git a/packages/Makefile b/packages/Makefile
index e8600923cff28fcfbc5f21fd8dcfb96bd0396905..a360dba78c28e30c1d5089bfd6d4626d00c4fdde 100644
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -204,7 +204,7 @@ extensions_install:
 #------------------------------------------------------------------------------
 # externals_install
 externals_install: 
-	$(MAKE) -C $(externals_src) $(DEST_PATHS) install
+	$(MAKE) -C $(externals_src) $(DEST_PATHS) install INCREMENTAL=$(INCREMENTAL)
 
 
 #------------------------------------------------------------------------------
diff --git a/packages/win32_inno/Makefile b/packages/win32_inno/Makefile
index 611033e3145eda30f76c97ca4baa25834d183968..515dc161af572c85380fa54b24797f274b747a41 100755
--- a/packages/win32_inno/Makefile
+++ b/packages/win32_inno/Makefile
@@ -62,7 +62,7 @@ install: pd_install prebuilt_install lib_install exe_install
 
 
 prebuilt_install:
-	$(MAKE) -C $(packages_src) $(DEST_PATHS) extended_install
+	$(MAKE) -C $(packages_src) $(DEST_PATHS) extended_install INCREMENTAL=$(INCREMENTAL)
 	$(MAKE) -C $(packages_src) $(DEST_PATHS) doc_format
 	install -p pd-settings.reg $(DESTDIR)$(prefix)