diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index 6db0795..ea28ca5 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -47,13 +47,17 @@
 	prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-linux-androideabi-4.4.x/bin/arm-linux-androideabi-
 endif
 
-TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
-TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
-TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
-TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
-TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
-TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
-TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
+# Only define these if there's actually a gcc in there.
+# The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it.
+ifneq ($(wildcard $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)),)
+    TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
+    TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
+    TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
+    TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
+    TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
+    TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
+    TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
+endif
 
 TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
 
diff --git a/core/dumpvar.mk b/core/dumpvar.mk
index c94d943..831ed97 100644
--- a/core/dumpvar.mk
+++ b/core/dumpvar.mk
@@ -8,8 +8,11 @@
 ifeq ($(TARGET_SIMULATOR),true)
 	ABP:=$(ABP):$(TARGET_OUT_EXECUTABLES)
 else
-	# this should be copied to HOST_OUT_EXECUTABLES instead
-	ABP:=$(ABP):$(PWD)/prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-linux-androideabi-4.4.x/bin
+	# Add the toolchain bin dir if it actually exists
+	ifneq ($(wildcard $(PWD)/prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-linux-androideabi-4.4.x/bin),)
+		# this should be copied to HOST_OUT_EXECUTABLES instead
+		ABP:=$(ABP):$(PWD)/prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-linux-androideabi-4.4.x/bin
+	endif
 endif
 ANDROID_BUILD_PATHS := $(ABP)
 ANDROID_PREBUILTS := prebuilt/$(HOST_PREBUILT_TAG)
diff --git a/envsetup.sh b/envsetup.sh
index 2439e66..a845a18 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -95,11 +95,14 @@
     #                                                                #
     ##################################################################
 
+    # Note: on windows/cygwin, ANDROID_BUILD_PATHS will contain spaces
+    # due to "C:\Program Files" being in the path.
+
     # out with the old
-    if [ -n $ANDROID_BUILD_PATHS ] ; then
+    if [ -n "$ANDROID_BUILD_PATHS" ] ; then
         export PATH=${PATH/$ANDROID_BUILD_PATHS/}
     fi
-    if [ -n $ANDROID_PRE_BUILD_PATHS ] ; then
+    if [ -n "$ANDROID_PRE_BUILD_PATHS" ] ; then
         export PATH=${PATH/$ANDROID_PRE_BUILD_PATHS/}
         # strip trailing ':', if any
         export PATH=${PATH/%:/}
@@ -108,8 +111,20 @@
     # and in with the new
     CODE_REVIEWS=
     prebuiltdir=$(getprebuilt)
-    export ANDROID_EABI_TOOLCHAIN=$prebuiltdir/toolchain/arm-linux-androideabi-4.4.x/bin
-    export ARM_EABI_TOOLCHAIN=$prebuiltdir/toolchain/arm-eabi-4.4.3/bin
+
+    # The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it.
+    export ANDROID_EABI_TOOLCHAIN=
+    toolchaindir=toolchain/arm-linux-androideabi-4.4.x/bin
+    if [ -d "$prebuiltdir/$toolchaindir" ]; then
+        export ANDROID_EABI_TOOLCHAIN=$prebuiltdir/$toolchaindir
+    fi
+
+    export ARM_EABI_TOOLCHAIN=
+    toolchaindir=toolchain/arm-eabi-4.4.3/bin
+    if [ -d "$prebuiltdir/$toolchaindir" ]; then
+        export ARM_EABI_TOOLCHAIN=$prebuiltdir/$toolchaindir
+    fi
+
     export ANDROID_TOOLCHAIN=$ANDROID_EABI_TOOLCHAIN
     export ANDROID_QTOOLS=$T/development/emulator/qtools
     export ANDROID_BUILD_PATHS=:$(get_build_var ANDROID_BUILD_PATHS):$ANDROID_QTOOLS:$ANDROID_TOOLCHAIN:$ARM_EABI_TOOLCHAIN$CODE_REVIEWS