Index: win/makefile.vc
==================================================================
--- win/makefile.vc
+++ win/makefile.vc
@@ -1,8 +1,8 @@
 #------------------------------------------------------------- -*- makefile -*-
 #
-# Makefile for TclTLS extensions.
+# Makefile for TCL TLS extension
 #
 # Basic build, test and install
 #   nmake /f makefile.vc INSTALLDIR=c:\path\to\tcl
 #   nmake /f makefile.vc INSTALLDIR=c:\path\to\tcl test
 #   nmake /f makefile.vc INSTALLDIR=c:\path\to\tcl install
@@ -30,11 +30,11 @@
 	$(TMP_DIR)\tlsIO.obj \
 	$(TMP_DIR)\tlsX509.obj
 
 # Define any additional project include flags
 # SSL_INSTALL_FOLDER = with the OpenSSL installation folder following.
-PRJ_INCLUDES = -I"$(SSL_INSTALL_FOLDER)\include" -I"$(OPENSSL_INSTALL_DIR)\include"
+PRJ_INCLUDES = -I"$(SSL_INSTALL_FOLDER)\include" -I"$(OPENSSL_INSTALL_DIR)\include" -I"$(TMP_DIR)"
 
 # Define any additional compiler flags that might be required for the project
 PRJ_DEFINES = -D NO_SSL2 -D NO_SSL3 -D _CRT_SECURE_NO_WARNINGS
 
 #
@@ -57,26 +57,32 @@
 # Project specific targets
 
 all: default-target
 
 clean: default-clean
-	@if exist $(WIN_DIR)\tlsUuid.h del $(WIN_DIR)\tlsUuid.h
 
 realclean: default-hose
-	@if exist $(WIN_DIR)\tlsUuid.h del $(WIN_DIR)\tlsUuid.h
 
 # We must define a pkgindex target that will create a pkgIndex.tcl
 # file in the $(OUT_DIR) directory. We can just redirect to the
 # default-pkgindex target for our sample extension.
 pkgindex: default-pkgindex-tea
 
 $(ROOT)\manifest.uuid:
-   copy $(WIN_DIR)\gitmanifest.in $(ROOT)\manifest.uuid
-   git rev-parse HEAD >>$(ROOT)\manifest.uuid
+    if not exist $(ROOT)\manifest.uuid (
+	copy $(WIN_DIR)\gitmanifest.in $(ROOT)\manifest.uuid
+	where git
+	if ERRORLEVEL 0 (
+	    git rev-parse HEAD >>$(ROOT)\manifest.uuid
+	) else (
+	    echo unknown >>$(ROOT)\manifest.uuid
+	)
+    )
 
-$(WIN_DIR)\tlsUuid.h:	$(ROOT)\manifest.uuid
-	copy $(WIN_DIR)\tlsUuid.h.in+$(ROOT)\manifest.uuid $(WIN_DIR)\tlsUuid.h
+$(TMP_DIR)\tlsUuid.h:	$(ROOT)\manifest.uuid
+	copy $(WIN_DIR)\tlsUuid.h.in+$(ROOT)\manifest.uuid $(TMP_DIR)\tlsUuid.h
+	echo: >>$(TMP_DIR)\tlsUuid.h
 
 
 # The default install target only installs binaries and scripts so add
 # an additional target for our documentation. Note this *adds* a target
 # since no commands are listed after it. The original targets for
@@ -88,9 +94,9 @@
     if exist "$(SSL_INSTALL_FOLDER)\bin\libssl-*-x64.dll" (
         xcopy /c /y "$(SSL_INSTALL_FOLDER)\bin\libssl-*-x64.dll" "$(PRJ_INSTALL_DIR)"
     )
 
 # Explicit dependency rules
-$(GENERICDIR)\tls.c: $(WIN_DIR)\tlsUuid.h
+$(GENERICDIR)\tls.c: $(TMP_DIR)\tlsUuid.h
 
 # Test package
 test: default-test