diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
new file mode 100644
index 00000000..357dc3c2
--- /dev/null
+++ b/.github/workflows/windows.yml
@@ -0,0 +1,21 @@
+name: Windows
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: windows-latest
+    name: build
+    steps:
+      - uses: actions/checkout@v3
+      - name: configure
+        run: cmake -Bbuild -DUSE_ASYNC:BOOL=OFF
+      - name: make
+        run: cmake --build build
+      - name: make check
+        run: ctest --test-dir build -Ttest -C Debug -j1 --output-on-failure
diff --git a/cmake/config.cmake b/cmake/config.cmake
index 11942fba..5e1d47b5 100644
--- a/cmake/config.cmake
+++ b/cmake/config.cmake
@@ -7,4 +7,8 @@ option(USE_LIBPCAUDIO "Use libPcAudio for sound output" ${HAVE_LIBPCAUDIO})
 
 option(USE_KLATT "Use klatt for speech synthesis" ON)
 option(USE_SPEECHPLAYER "Use speech-player for speech synthesis" ON)
-option(USE_ASYNC "Support asynchronous speech synthesis" ON)
+if (HAVE_PTHREAD)
+  option(USE_ASYNC "Support asynchronous speech synthesis" ON)
+else()
+  set(USE_ASYNC OFF)
+endif()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d1288955..654d7fa0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -10,11 +10,16 @@ set_target_properties(espeak-ng-bin PROPERTIES OUTPUT_NAME espeak-ng)
 target_link_libraries(
   espeak-ng-bin PRIVATE espeak-ng espeak-ng-config
 )
-add_custom_target(
-  speak-ng ALL
-  ${CMAKE_COMMAND} -E create_symlink espeak-ng ${CMAKE_CURRENT_BINARY_DIR}/speak-ng
-  COMMENT "Link espeak-ng to speak-ng"
-  DEPENDS espeak-ng-bin
-)
+if (MSVC)
+  target_sources(espeak-ng-bin PRIVATE compat/getopt.c)
+endif()
+if (NOT WIN32)
+  add_custom_target(
+    speak-ng ALL
+    ${CMAKE_COMMAND} -E create_symlink espeak-ng ${CMAKE_CURRENT_BINARY_DIR}/speak-ng
+    COMMENT "Link espeak-ng to speak-ng"
+    DEPENDS espeak-ng-bin
+  )
+endif()
 install(TARGETS espeak-ng-bin)
 install(DIRECTORY include/espeak include/espeak-ng TYPE INCLUDE)
diff --git a/src/libespeak-ng/CMakeLists.txt b/src/libespeak-ng/CMakeLists.txt
index c23eda4d..d3d68f7f 100644
--- a/src/libespeak-ng/CMakeLists.txt
+++ b/src/libespeak-ng/CMakeLists.txt
@@ -38,23 +38,28 @@ add_library(espeak-ng
   espeak_api.c
 )
 
-target_compile_options(espeak-ng PRIVATE
-  "-fPIC"
-  "-fvisibility=hidden"
-  "-fno-exceptions"
-  "-fwrapv"
+if (NOT MSVC)
+  target_compile_options(espeak-ng PRIVATE
+    "-fPIC"
+    "-fvisibility=hidden"
+    "-fno-exceptions"
+    "-fwrapv"
 
-  "-pedantic"
+    "-pedantic"
 
-  "-Wunused-parameter"
-  "-Wunused"
-  "-Wuninitialized"
-  "-Wreturn-type"
-  "-Wmissing-prototypes"
-  "-Wint-conversion"
-  "-Wimplicit"
-)
-target_compile_definitions(espeak-ng PRIVATE "LIBESPEAK_NG_EXPORT")
+    "-Wunused-parameter"
+    "-Wunused"
+    "-Wuninitialized"
+    "-Wreturn-type"
+    "-Wmissing-prototypes"
+    "-Wint-conversion"
+    "-Wimplicit"
+  )
+endif()
+target_compile_definitions(espeak-ng PRIVATE "LIBESPEAK_NG_EXPORT=1")
+if (NOT BUILD_SHARED_LIBS)
+  target_compile_definitions(espeak-ng INTERFACE "LIBESPEAK_NG_EXPORT=1")
+endif()
 
 if (USE_ASYNC)
   target_sources(espeak-ng PRIVATE
@@ -91,7 +96,10 @@ if (HAVE_LIBPCAUDIO AND USE_LIBPCAUDIO)
   target_include_directories(espeak-ng PRIVATE ${PCAUDIO_INC})
 endif()
 
-target_link_libraries(espeak-ng PRIVATE espeak-ng-config ucd m)
+target_link_libraries(espeak-ng PRIVATE espeak-ng-config ucd)
+if (NOT MSVC)
+  target_link_libraries(espeak-ng PRIVATE m)
+endif()
 target_link_libraries(espeak-ng PUBLIC espeak-include)
 
 install(TARGETS espeak-ng LIBRARY)
diff --git a/src/speechPlayer/CMakeLists.txt b/src/speechPlayer/CMakeLists.txt
index c80cc519..ed92589c 100644
--- a/src/speechPlayer/CMakeLists.txt
+++ b/src/speechPlayer/CMakeLists.txt
@@ -4,5 +4,7 @@ add_library(speechPlayer STATIC
   src/speechWaveGenerator.cpp
 )
 target_include_directories(speechPlayer PUBLIC include)
-target_compile_options(speechPlayer PRIVATE "-fPIC")
+if(NOT MSVC)
+  target_compile_options(speechPlayer PRIVATE "-fPIC")
+endif()
 install(TARGETS speechPlayer ARCHIVE)