diff --git a/ports/libxml2/0001-Fix-makefile-imports.patch b/ports/libxml2/0001-Fix-makefile-imports.patch
deleted file mode 100644
index ae40648b9..000000000
--- a/ports/libxml2/0001-Fix-makefile-imports.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-diff --git "a/win32/Makefile.msvc" "b/win32/Makefile.msvc"
-index d16c1a2..09d2291 100644
---- "a/win32/Makefile.msvc"
-+++ "b/win32/Makefile.msvc"	
-@@ -72,7 +72,7 @@ LIBS =
- LIBS = $(LIBS) wsock32.lib ws2_32.lib
- !endif 
- !if "$(WITH_ICONV)" == "1"
--LIBS = $(LIBS) iconv.lib
-+LIBS = $(LIBS) libiconv.lib libcharset.lib
- !endif 
- !if "$(WITH_ICU)" == "1"
- LIBS = $(LIBS) icu.lib
-@@ -80,7 +80,11 @@ LIBS = $(LIBS) icu.lib
- !if "$(WITH_ZLIB)" == "1"
- # could be named differently zdll or zlib
- # LIBS = $(LIBS) zdll.lib
--LIBS = $(LIBS) zlib.lib
-+!if "$(DEBUG)" == "1"
-+LIBS = $(LIBS) zlibd.lib
-+!else
-+LIBS = $(LIBS) zlib.lib
-+!endif
- !endif
- !if "$(WITH_LZMA)" == "1"
- LIBS = $(LIBS) liblzma.lib
- 
\ No newline at end of file
diff --git a/ports/libxml2/0001-Fix-makefile.patch b/ports/libxml2/0001-Fix-makefile.patch
new file mode 100644
index 000000000..0e6c774dd
--- /dev/null
+++ b/ports/libxml2/0001-Fix-makefile.patch
@@ -0,0 +1,60 @@
+---
+ win32/Makefile.msvc | 22 ++++++++++++----------
+ 1 file changed, 12 insertions(+), 10 deletions(-)
+
+diff --git a/win32/Makefile.msvc b/win32/Makefile.msvc
+index d16c1a2..de9e22e 100644
+--- a/win32/Makefile.msvc
++++ b/win32/Makefile.msvc
+@@ -28,11 +28,11 @@ XML_A = $(XML_BASENAME)_a.lib
+ XML_A_DLL = $(XML_BASENAME)_a_dll.lib
+ 
+ # Place where we let the compiler put its output.
+-BINDIR = bin.msvc
+-XML_INTDIR = int.msvc
+-XML_INTDIR_A = int.a.msvc
+-XML_INTDIR_A_DLL = int.a.dll.msvc
+-UTILS_INTDIR = int.utils.msvc
++BINDIR = $(OUTDIR)\bin.msvc
++XML_INTDIR = $(OUTDIR)\int.msvc
++XML_INTDIR_A = $(OUTDIR)\int.a.msvc
++XML_INTDIR_A_DLL = $(OUTDIR)\int.a.dll.msvc
++UTILS_INTDIR = $(OUTDIR)\int.utils.msvc
+ 
+ # The preprocessor and its options.
+ CPP = cl.exe /EP
+@@ -72,16 +72,18 @@ LIBS =
+ LIBS = $(LIBS) wsock32.lib ws2_32.lib
+ !endif 
+ !if "$(WITH_ICONV)" == "1"
+-LIBS = $(LIBS) iconv.lib
++LIBS = $(LIBS) libiconv.lib libcharset.lib
+ !endif 
+ !if "$(WITH_ICU)" == "1"
+ LIBS = $(LIBS) icu.lib
+ !endif
+ !if "$(WITH_ZLIB)" == "1"
+-# could be named differently zdll or zlib
+-# LIBS = $(LIBS) zdll.lib
++!if "$(DEBUG)" == "1"
++LIBS = $(LIBS) zlibd.lib
++!else
+ LIBS = $(LIBS) zlib.lib
+ !endif
++!endif
+ !if "$(WITH_LZMA)" == "1"
+ LIBS = $(LIBS) liblzma.lib
+ !endif
+@@ -101,10 +103,10 @@ ARFLAGS = /nologo
+ CFLAGS = $(CFLAGS) /D "_DEBUG" /Od /Z7
+ LDFLAGS = $(LDFLAGS) /DEBUG
+ !else
+ CFLAGS = $(CFLAGS) /D "NDEBUG" /O2 
+ # commented out as this break VC10 c.f. 634846
+ # LDFLAGS = $(LDFLAGS) /OPT:NOWIN98
+-LDFLAGS = $(LDFLAGS)
++LDFLAGS = $(LDFLAGS) /DEBUG /OPT:REF /OPT:ICF
+ !endif
+ 
+ # Libxml object files.
+-- 
diff --git a/ports/libxml2/portfile.cmake b/ports/libxml2/portfile.cmake
index 8bddd6c54..bb4e043b3 100644
--- a/ports/libxml2/portfile.cmake
+++ b/ports/libxml2/portfile.cmake
@@ -19,7 +19,7 @@ find_program(NMAKE nmake)
 
 vcpkg_apply_patches(
     SOURCE_PATH ${SOURCE_PATH}/
-    PATCHES ${CMAKE_CURRENT_LIST_DIR}/0001-Fix-makefile-imports.patch
+    PATCHES ${CMAKE_CURRENT_LIST_DIR}/0001-Fix-makefile.patch
 )
 
 set(SCRIPTS_DIR ${SOURCE_PATH}/win32)
@@ -61,11 +61,14 @@ vcpkg_execute_required_process(
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME config-${TARGET_TRIPLET}-rel
 )
+# Handle build output directory
+file(TO_NATIVE_PATH "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel" OUTDIR)
+file(MAKE_DIRECTORY "${OUTDIR}")
 message(STATUS "Configuring ${TARGET_TRIPLET}-rel done")
 
 message(STATUS "Building ${TARGET_TRIPLET}-rel")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc rebuild
+    COMMAND ${NMAKE} /f Makefile.msvc rebuild OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME build-${TARGET_TRIPLET}-rel
 )
@@ -73,7 +76,7 @@ message(STATUS "Building ${TARGET_TRIPLET}-rel done")
 
 message(STATUS "Installing ${TARGET_TRIPLET}-rel")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc install
+    COMMAND ${NMAKE} /f Makefile.msvc install OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME install-${TARGET_TRIPLET}-rel
 )
@@ -103,11 +106,14 @@ vcpkg_execute_required_process(
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME config-${TARGET_TRIPLET}-dbg
 )
+# Handle build output directory
+file(TO_NATIVE_PATH "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg" OUTDIR)
+file(MAKE_DIRECTORY "${OUTDIR}")
 message(STATUS "Configuring ${TARGET_TRIPLET}-dbg done")
 
 message(STATUS "Building ${TARGET_TRIPLET}-dbg")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc rebuild
+    COMMAND ${NMAKE} /f Makefile.msvc rebuild OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME build-${TARGET_TRIPLET}-dbg
 )
@@ -115,7 +121,7 @@ message(STATUS "Building ${TARGET_TRIPLET}-dbg done")
 
 message(STATUS "Installing ${TARGET_TRIPLET}-dbg")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc install
+    COMMAND ${NMAKE} /f Makefile.msvc install OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME install-${TARGET_TRIPLET}-dbg
 )
diff --git a/ports/libxslt/0001-Fix-makefile-imports.patch b/ports/libxslt/0001-Fix-makefile-imports.patch
deleted file mode 100644
index 33b333cc0..000000000
--- a/ports/libxslt/0001-Fix-makefile-imports.patch
+++ /dev/null
@@ -1,40 +0,0 @@
----
- win32/Makefile.msvc | 17 +++++++++--------
- 1 file changed, 9 insertions(+), 8 deletions(-)
-
-diff --git a/win32/Makefile.msvc b/win32/Makefile.msvc
-index 23a02d2..b02af8e 100644
---- a/win32/Makefile.msvc
-+++ b/win32/Makefile.msvc
-@@ -59,7 +59,14 @@ CFLAGS = $(CFLAGS) /D_CRT_SECURE_NO_DEPRECATE /D_CRT_NONSTDC_NO_DEPRECATE
- LD = link.exe
- LDFLAGS = /nologo
- LDFLAGS = $(LDFLAGS) /LIBPATH:$(BINDIR) /LIBPATH:$(LIBPREFIX)
--LIBS = wsock32.lib
-+# The libraries are needed for static builds (the makefile builds all tools and dlls)
-+LIBS = wsock32.lib libiconv.lib libcharset.lib
-+!if "$(DEBUG)" == "1"
-+LIBS = $(LIBS) zlibd.lib
-+!else
-+LIBS = $(LIBS) zlib.lib
-+!endif
-+
- 
- # The archiver and its options.
- AR = lib.exe
-@@ -309,13 +316,7 @@ $(UTILS_INTDIR) :
- # An implicit rule for xsltproc and friends.
- APPLIBS = $(LIBS)
- !if "$(STATIC)" == "1"
--APPLIBS = $(LIBS) libxml2_a.lib
--!if "$(WITH_ICONV)" == "1"
--APPLIBS = $(APPLIBS) iconv.lib
--!endif
--!if "$(WITH_ZLIB)" == "1"
--APPLIBS = $(APPLIBS) zlib.lib
--!endif
-+APPLIBS = $(LIBS) libxml2.lib
- {$(UTILS_SRCDIR)}.c{$(BINDIR)}.exe:
- 	$(CC) /D "LIBXML_STATIC" /D "LIBXSLT_STATIC" /D "LIBEXSLT_STATIC" \
- 		$(CFLAGS) /Fo$(UTILS_INTDIR)\ /c $< 
--- 
diff --git a/ports/libxslt/0001-Fix-makefile.patch b/ports/libxslt/0001-Fix-makefile.patch
new file mode 100644
index 000000000..73d627860
--- /dev/null
+++ b/ports/libxslt/0001-Fix-makefile.patch
@@ -0,0 +1,73 @@
+---
+ win32/Makefile.msvc | 29 +++++++++++++++--------------
+ 1 file changed, 15 insertions(+), 14 deletions(-)
+
+diff --git a/win32/Makefile.msvc b/win32/Makefile.msvc
+index 23a02d2..b13dd26 100644
+--- a/win32/Makefile.msvc
++++ b/win32/Makefile.msvc
+@@ -22,7 +22,7 @@ BASEDIR = ..
+ XSLT_SRCDIR = $(BASEDIR)\libxslt
+ EXSLT_SRCDIR = $(BASEDIR)\libexslt
+ UTILS_SRCDIR = $(BASEDIR)\xsltproc
+-BINDIR = bin.msvc
++BINDIR = $(OUTDIR)\bin.msvc
+ 
+ # Names of various input and output components.
+ XSLT_NAME = xslt
+@@ -39,11 +39,11 @@ EXSLT_DEF = $(EXSLT_BASENAME).def
+ EXSLT_A = $(EXSLT_BASENAME)_a.lib
+ 
+ # Places where intermediate files produced by the compiler go
+-XSLT_INTDIR = int.xslt.msvc
+-XSLT_INTDIR_A = int.xslta.msvc
+-EXSLT_INTDIR = int.exslt.msvc
+-EXSLT_INTDIR_A = int.exslta.msvc
+-UTILS_INTDIR = int.utils.msvc
++XSLT_INTDIR = $(OUTDIR)\int.xslt.msvc
++XSLT_INTDIR_A = $(OUTDIR)\int.xslta.msvc
++EXSLT_INTDIR = $(OUTDIR)\int.exslt.msvc
++EXSLT_INTDIR_A = $(OUTDIR)\int.exslta.msvc
++UTILS_INTDIR = $(OUTDIR)\int.utils.msvc
+ 
+ # The preprocessor and its options.
+ CPP = cl.exe /EP
+@@ -59,7 +59,13 @@ CFLAGS = $(CFLAGS) /D_CRT_SECURE_NO_DEPRECATE /D_CRT_NONSTDC_NO_DEPRECATE
+ LD = link.exe
+ LDFLAGS = /nologo
+ LDFLAGS = $(LDFLAGS) /LIBPATH:$(BINDIR) /LIBPATH:$(LIBPREFIX)
+-LIBS = wsock32.lib
++# The libraries are needed for static builds (the makefile builds all tools and dlls)
++LIBS = wsock32.lib libiconv.lib libcharset.lib
++!if "$(DEBUG)" == "1"
++LIBS = $(LIBS) zlibd.lib
++!else
++LIBS = $(LIBS) zlib.lib
++!endif
+ 
+ # The archiver and its options.
+ AR = lib.exe
+@@ -71,6 +77,7 @@ CFLAGS = $(CFLAGS) /D "_DEBUG" /Od /Z7
+ LDFLAGS = $(LDFLAGS) /DEBUG
+ !else
+ CFLAGS = $(CFLAGS) /D "NDEBUG" /O2 
++LDFLAGS = $(LDFLAGS) /DEBUG /OPT:REF /OPT:ICF
+ !endif
+ 
+ # Libxslt object files.
+@@ -309,13 +316,7 @@ $(UTILS_INTDIR) :
+ # An implicit rule for xsltproc and friends.
+ APPLIBS = $(LIBS)
+ !if "$(STATIC)" == "1"
+-APPLIBS = $(LIBS) libxml2_a.lib
+-!if "$(WITH_ICONV)" == "1"
+-APPLIBS = $(APPLIBS) iconv.lib
+-!endif
+-!if "$(WITH_ZLIB)" == "1"
+-APPLIBS = $(APPLIBS) zlib.lib
+-!endif
++APPLIBS = $(LIBS) libxml2.lib
+ {$(UTILS_SRCDIR)}.c{$(BINDIR)}.exe:
+ 	$(CC) /D "LIBXML_STATIC" /D "LIBXSLT_STATIC" /D "LIBEXSLT_STATIC" \
+ 		$(CFLAGS) /Fo$(UTILS_INTDIR)\ /c $< 
+-- 
diff --git a/ports/libxslt/portfile.cmake b/ports/libxslt/portfile.cmake
index ab556701f..2343ba99f 100644
--- a/ports/libxslt/portfile.cmake
+++ b/ports/libxslt/portfile.cmake
@@ -19,7 +19,7 @@ find_program(NMAKE nmake)
 
 vcpkg_apply_patches(
     SOURCE_PATH ${SOURCE_PATH}/
-    PATCHES ${CMAKE_CURRENT_LIST_DIR}/0001-Fix-makefile-imports.patch
+    PATCHES ${CMAKE_CURRENT_LIST_DIR}/0001-Fix-makefile.patch
 )
 
 set(SCRIPTS_DIR ${SOURCE_PATH}/win32)
@@ -62,11 +62,14 @@ vcpkg_execute_required_process(
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME config-${TARGET_TRIPLET}-rel
 )
+# Handle build output directory
+file(TO_NATIVE_PATH "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel" OUTDIR)
+file(MAKE_DIRECTORY "${OUTDIR}")
 message(STATUS "Configuring ${TARGET_TRIPLET}-rel done")
 
 message(STATUS "Building ${TARGET_TRIPLET}-rel")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc rebuild
+    COMMAND ${NMAKE} /f Makefile.msvc rebuild OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME build-${TARGET_TRIPLET}-rel
 )
@@ -74,7 +77,7 @@ message(STATUS "Building ${TARGET_TRIPLET}-rel done")
 
 message(STATUS "Installing ${TARGET_TRIPLET}-rel")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc install
+    COMMAND ${NMAKE} /f Makefile.msvc install OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME install-${TARGET_TRIPLET}-rel
 )
@@ -104,11 +107,14 @@ vcpkg_execute_required_process(
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME config-${TARGET_TRIPLET}-dbg
 )
+# Handle build output directory
+file(TO_NATIVE_PATH "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg" OUTDIR)
+file(MAKE_DIRECTORY "${OUTDIR}")
 message(STATUS "Configuring ${TARGET_TRIPLET}-dbg done")
 
 message(STATUS "Building ${TARGET_TRIPLET}-dbg")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc rebuild
+    COMMAND ${NMAKE} /f Makefile.msvc rebuild OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME build-${TARGET_TRIPLET}-dbg
 )
@@ -116,7 +122,7 @@ message(STATUS "Building ${TARGET_TRIPLET}-dbg done")
 
 message(STATUS "Installing ${TARGET_TRIPLET}-dbg")
 vcpkg_execute_required_process(
-    COMMAND ${NMAKE} /f Makefile.msvc install
+    COMMAND ${NMAKE} /f Makefile.msvc install OUTDIR=${OUTDIR}
     WORKING_DIRECTORY ${SCRIPTS_DIR}
     LOGNAME install-${TARGET_TRIPLET}-dbg
 )