windows build: fix build errors

Fixes various link errors with VS2010

Reported-by: "kdekker"
Fixes #272

src/NMakefile

@@ -4,15 +4,25 @@
 
 CFLAGS=$(CFLAGS)
 
+AR = lib
+ARFLAGS = -nologo /LTCG
+
 RESOURCE=$(INTDIR)\libssh2.res
-
 DLL=libssh2$(SUFFIX).dll
+STATICLIB=$(INTDIR)\libssh2.lib
 
+!if "$(BUILD_STATIC_LIB)" == ""
 all: $(DLL)
+!else
+all: $(STATICLIB)
+!endif
 
 $(DLL): $(OBJECTS) $(RESOURCE)
 	$(CC) -o $(DLL) $(DLLFLAGS) $(OBJECTS) $(RESOURCE) $(LIBS)
 
+$(STATICLIB): $(OBJECTS)
+	$(AR) $(ARFLAGS) -out:$@ $(OBJECTS)
+
 $(RESOURCE): win32\libssh2.rc
 	$(RC) $(RCFLAGS) /Fo"$@" $?
 

win32/config.mk

@@ -1,10 +1,20 @@
 
 # Tweak these for your system
-OPENSSLINC=..\openssl-0.9.8y\inc32
-OPENSSLLIB=..\openssl-0.9.8y\out32dll
+!if "$(OPENSSLINC)" == ""
+OPENSSLINC=..\openssl-0.9.8x\inc32
+!endif
 
+!if "$(OPENSSLLIB)" == ""
+OPENSSLLIB=..\openssl-0.9.8x\out32dll
+!endif
+
+!if "$(ZLIBINC)" == ""
 ZLIBINC=-DLIBSSH2_HAVE_ZLIB=1 /I..\zlib-1.2.7
+!endif
+
+!if "$(ZLIBLIB)" == ""
 ZLIBLIB=..\zlib-1.2.7
+!endif
 
 !if "$(TARGET)" == ""
 TARGET=Release
@@ -15,15 +25,15 @@ SUFFIX=_debug
 CPPFLAGS=/Od /MDd
 DLLFLAGS=/DEBUG /LDd
 !else
-CPPFLAGS=/Og /Oi /O2 /Oy /GF /Y- /MD /DNDEBUG
+CPPFLAGS=/Oi /O2 /Oy /GF /Y- /MD /DNDEBUG
 DLLFLAGS=/DEBUG /LD
 !endif
 
-CPPFLAGS=/nologo /GL /Zi /EHsc $(CPPFLAGS) /Iwin32 /Iinclude /I$(OPENSSLINC) $(ZLIBINC) -DLIBSSH2_WIN32
+CPPFLAGS=/nologo /GL /Zi /EHsc $(CPPFLAGS) /Iwin32 /Iinclude /I$(OPENSSLINC) $(ZLIBINC)
 CFLAGS=$(CPPFLAGS)
 RCFLAGS=/Iinclude
 DLLFLAGS=$(CFLAGS) $(DLLFLAGS)
-LIBS=$(OPENSSLLIB)\libeay32.lib $(OPENSSLLIB)\ssleay32.lib ws2_32.lib user32.lib $(ZLIBLIB)\zlib.lib
+LIBS=$(OPENSSLLIB)\libeay32.lib $(OPENSSLLIB)\ssleay32.lib $(ZLIBLIB)\zlib.lib ws2_32.lib user32.lib advapi32.lib gdi32.lib
 
 INTDIR=$(TARGET)\$(SUBDIR)