diff --git a/.appveyor.yml b/.appveyor.yml
new file mode 100644
index 00000000..4088ca6f
--- /dev/null
+++ b/.appveyor.yml
@@ -0,0 +1,77 @@
+image: Visual Studio 2015
+build: off
+
+before_build:
+  - git submodule update --init --recursive --depth 1
+  - git clone https://github.com/FWGS/hlsdk-portable --depth 1
+  - git clone https://github.com/FWGS/xash3d-android-project -b android-legacy --depth 1
+  # setup NDK
+  - curl -fsS -o android-ndk-r10e-windows-x86_64.zip https://dl.google.com/android/repository/android-ndk-r10e-windows-x86_64.zip
+  - 7z x android-ndk-r10e-windows-x86_64.zip
+  # setup SDK
+  - mkdir android-sdk
+  - cd android-sdk
+  - mkdir build-tools
+  - cd build-tools
+  # build tools 19 seems to have good compatibility
+  - curl -fsS -o  android-4.4.2.zip https://dl-ssl.google.com/android/repository/build-tools_r19.1-windows.zip
+  - 7z x android-4.4.2.zip
+  - move android-4.4.2 19
+  - del android-4.4.2.zip
+  # sdk dx.bat seems to be broken java detection on appveyor, but java is in PATH already
+  # and i do not know how to escape "$*" in yaml+cmd, so use python
+  - python -c print('java\x20-jar\x20\x25APPVEYOR_BUILD_FOLDER\x25\\android-sdk\\build-tools\\19\\lib\\dx.jar\x20\x25\x2a')  > 19\dx.bat
+  - type 19\dx.bat
+  - cd ..
+  - mkdir platforms
+  - cd platforms
+  # platform 29 should be enough for now
+  - curl -fsS -o  android-10.zip https://dl-ssl.google.com/android/repository/platform-29_r05.zip
+  - 7z x android-10.zip
+  - move android-10 android-29
+  - del android-10.zip
+  - cd ..
+  # very many random build tools versions missing apksinger, maybe package it somewhere?
+  - curl -fsS -o apksigner.jar https://devel.data-in-motion.biz/repository/android/build-tools/27.0.1/apksigner.jar
+  - cd ..
+  # xz-utils only need for minidbg
+  - mkdir xz-utils
+  - cd xz-utils
+  - curl -fsS -o xz-5.2.3-windows.zip https://tukaani.org/xz/xz-5.2.3-windows.zip
+  - 7z x xz-5.2.3-windows.zip
+  - del xz-5.2.3-windows.zip
+  - cd ..
+  # what the hell with zip?
+  - curl -fsS -o zip300xn-x64_1.zip  ftp://ftp.info-zip.org/pub/infozip/win32/zip300xn-x64.zip
+  - 7z x zip300xn-x64_1.zip zip300xn-x64.zip
+  - del zip300xn-x64_1.zip
+  - 7z x zip300xn-x64.zip zip.exe
+  - del zip300xn-x64.zip
+
+build_script:
+  - set ANDROID_NDK_HOME=%APPVEYOR_BUILD_FOLDER%/android-ndk-r10e
+  - set ANDROID_SDK_HOME=%APPVEYOR_BUILD_FOLDER%/android-sdk
+  # appveyor seems to have 32-bit python, so autodetection fails
+  - set HOST_TOOLCHAIN=windows-x86_64
+  # check that our dx script works and java do not need to be detected separately
+  - set APKSIGNER=%APPVEYOR_BUILD_FOLDER%/apksigner.jar
+  - set XZ=%APPVEYOR_BUILD_FOLDER%/xz-utils/bin_x86-64/xz.exe
+  - android-sdk\build-tools\19\dx.bat --version
+  - python waf configure --enable-android-legacy --android aarch64,4.9,21 --disable-werror --extra-projects hlsdk-portable,xash3d-android-project ZIP=%APPVEYOR_BUILD_FOLDER%/zip.exe -T debug
+  - python waf -v
+
+on_failure:
+  - appveyor PushArtifact build/config.log
+  - 7z a c4che.7z build\c4che
+  - appveyor PushArtifact c4che.7z
+  - appveyor PushArtifact build/compile_commands.json
+  - appveyor PushArtifact build/xash3d-android-project/android/xashdroid.unaligned.noclasses.nojni.apk
+  - appveyor PushArtifact build/xash3d-android-project/android/xashdroid.unaligned.noclasses.apk
+  - appveyor PushArtifact build/xash3d-android-project/android/xashdroid.unaligned.apk
+  - appveyor PushArtifact build/xash3d-android-project/android/xashdroid.apk
+  
+
+artifacts:
+  - path: build\xash3d-android-project\android\xashdroid-signed.apk
+    name: xashdroid-legacy-aarch64-debug.apk
+  - path: build/compile_commands.json
\ No newline at end of file
diff --git a/scripts/waifulib/xcompile.py b/scripts/waifulib/xcompile.py
index 37905afc..86508a3f 100644
--- a/scripts/waifulib/xcompile.py
+++ b/scripts/waifulib/xcompile.py
@@ -34,6 +34,12 @@ NSWITCH_ENVVARS = ['DEVKITPRO']
 
 PSVITA_ENVVARS = ['VITASDK']
 
+def host_exe_suffix():
+	if sys.platform.startswith('win32') or sys.platform.startswith('cygwin'):
+		return '.exe'
+	return ''
+
+
 # This class does support ONLY r10e and r19c/r20 NDK
 class Android:
 	ctx            = None # waf context
@@ -209,25 +215,25 @@ class Android:
 
 	def cc(self):
 		if self.is_host():
-			s = 'clang'
+			s = 'clang' + host_exe_suffix()
 			environ = getattr(self.ctx, 'environ', os.environ)
 
 			if 'CC' in environ:
 				s = environ['CC']
 
 			return '%s --target=%s' % (s, self.ndk_triplet())  #%s%d' % (s, self.ndk_triplet(), self.api)
-		return self.gen_toolchain_path() + ('clang' if self.is_clang() else 'gcc')
+		return self.gen_toolchain_path() + ('clang' if self.is_clang() else 'gcc' + host_exe_suffix())
 
 	def cxx(self):
 		if self.is_host():
-			s = 'clang++'
+			s = 'clang++' + host_exe_suffix()
 			environ = getattr(self.ctx, 'environ', os.environ)
 
 			if 'CXX' in environ:
 				s = environ['CXX']
 
 			return '%s --target=%s' % (s, self.ndk_triplet()) #%s%d' % (s, self.ndk_triplet(), self.api)
-		return self.gen_toolchain_path() + ('clang++' if self.is_clang() else 'g++')
+		return self.gen_toolchain_path() + ('clang++' if self.is_clang() else 'g++' + host_exe_suffix())
 
 	def strip(self):
 		if self.is_host() and not self.ndk_binutils:
@@ -235,11 +241,11 @@ class Android:
 
 			if 'STRIP' in environ:
 				return environ['STRIP']
-			return 'llvm-strip'
+			return 'llvm-strip' + host_exe_suffix()
 
 		if self.ndk_rev >= 23:
-			return os.path.join(self.gen_binutils_path(), 'llvm-strip')
-		return os.path.join(self.gen_binutils_path(), 'strip')
+			return os.path.join(self.gen_binutils_path(), 'llvm-strip' + host_exe_suffix())
+		return os.path.join(self.gen_binutils_path(), 'strip' + host_exe_suffix())
 
 	def objcopy(self):
 		if self.is_host() and not self.ndk_binutils:
@@ -247,11 +253,23 @@ class Android:
 
 			if 'OBJCOPY' in environ:
 				return environ['OBJCOPY']
-			return 'llvm-objcopy'
+			return 'llvm-objcopy' + host_exe_suffix()
 
 		if self.ndk_rev >= 23:
-			return os.path.join(self.gen_binutils_path(), 'llvm-objcopy')
-		return os.path.join(self.gen_binutils_path(), 'objcopy')
+			return os.path.join(self.gen_binutils_path(), 'llvm-objcopy' + host_exe_suffix())
+		return os.path.join(self.gen_binutils_path(), 'objcopy' + host_exe_suffix())
+
+	def ar(self):
+		if self.is_host() and not self.ndk_binutils:
+			environ = getattr(self.ctx, 'environ', os.environ)
+
+			if 'AR' in environ:
+				return environ['AR']
+			return 'llvm-ar' + host_exe_suffix()
+
+		if self.ndk_rev >= 23:
+			return os.path.join(self.gen_binutils_path(), 'llvm-ar' + host_exe_suffix())
+		return os.path.join(self.gen_binutils_path(), 'ar' + host_exe_suffix())
 
 	def system_stl(self):
 		# TODO: proper STL support
@@ -563,10 +581,13 @@ def configure(conf):
 		conf.environ['CXX'] = android.cxx()
 		conf.environ['STRIP'] = android.strip()
 		conf.environ['OBJCOPY'] = android.objcopy()
+		conf.environ['AR'] = android.ar()
 		conf.env.CFLAGS += android.cflags()
 		conf.env.CXXFLAGS += android.cflags(True)
 		conf.env.LINKFLAGS += android.linkflags()
 		conf.env.LDFLAGS += android.ldflags()
+		conf.options.check_cxx_compiler = conf.options.check_cxx_compiler or 'g++,clang++'
+		conf.options.check_c_compiler = conf.options.check_c_compiler or 'gcc,clang'
 
 		conf.env.HAVE_M = True
 		if android.is_hardfp():
diff --git a/wscript b/wscript
index 5d5c4882..36776a0e 100644
--- a/wscript
+++ b/wscript
@@ -116,7 +116,7 @@ def process_extra_projects_conf(ctx):
 	ctx.env.EXTRA_PROJECTS = projs
 
 	for proj in projs.split(','):
-		tools_orig = ctx.tools.copy()
+		tools_orig = ctx.tools[:]
 		ctx.add_subproject(proj)
 		waifulib_path = os.path.join(proj, 'scripts', 'waifulib')
 		if os.path.isdir(waifulib_path):