Start building on Windows

.github/workflows/ci.yml

@@ -46,6 +46,11 @@ jobs:
             cxx: g++
             type: shared
             backend: JavaScriptCore
+          - os: windows-latest
+            cc: gcc
+            cxx: g++
+            type: static
+            backend: V8
 
           # Sanitizers
           - os: ubuntu-latest

cmake/FindV8.cmake

@@ -23,5 +23,83 @@ if(NOT V8_FOUND)
       INTERFACE V8_ENABLE_SANDBOX)
     add_library(V8::V8 ALIAS v8)
     set(V8_FOUND ON)
+  elseif(WIN32)
+    include(FetchContent)
+
+    set(V8_VERSION 12.3)
+
+    # This downloads the include.tar.gz file from
+    # https://github.com/just-js/v8/releases/tag/12.3
+    FetchContent_Declare(
+      v8_include
+      URL https://github.com/just-js/v8/releases/download/${V8_VERSION}/include.tar.gz
+      URL_HASH SHA256=cd6b891c30ecd28ccc254a90f33f92ac2d69f822fbfd54043ed74b57bf12c073
+      DOWNLOAD_EXTRACT_TIMESTAMP YES # To silence a CMake warning.
+      )
+
+    # This downloads the libv8_monolith-win-x64.zip file from
+    # https://github.com/just-js/v8/releases/tag/12.3
+    FetchContent_Declare(
+      v8_lib
+      URL https://github.com/just-js/v8/releases/download/${V8_VERSION}/libv8_monolith-win-x64.zip
+      URL_HASH SHA256=f80c7b3eb4580aa6fec5a8ec616fc9ada07acf7833d1b9c23b2586838e531960
+      DOWNLOAD_EXTRACT_TIMESTAMP YES # To silence a CMake warning.
+      )
+
+    FetchContent_MakeAvailable(v8_include v8_lib)
+
+    add_library(v8 INTERFACE)
+
+    # These must be defined, otherwise V8 would crash because of assertion errors.
+    # Refs: https://github.com/just-js/lo/blob/16b5b5daa21f129007177eb4c9aa60b72c74b704/Makefile#L17
+    target_compile_definitions(v8 INTERFACE
+      V8_COMPRESS_POINTERS
+      V8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=0
+      # https://chromium-review.googlesource.com/c/v8/v8/+/5032576 introduced this
+      # line
+      # static_assert(I::IsValidSmi(std::numeric_limits<uint16_t>::min()));
+      # which confuses the MSVC compiler and causes
+      # https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-4-c4458?view=msvc-170.
+      # Refs: https://stackoverflow.com/a/1904659
+      NOMINMAX)
+
+    # The CMAKE_INSTALL_*DIR variables become undefined during the
+    # find_package(V8) call while running the packaging test, so we are using
+    # the hard coded string values instead.
+    target_include_directories(v8 INTERFACE
+      "$<BUILD_INTERFACE:${v8_include_SOURCE_DIR}/include>"
+      "$<INSTALL_INTERFACE:include/v8/include>")
+
+    install(DIRECTORY "${v8_include_SOURCE_DIR}/include"
+      DESTINATION "include/v8"
+      COMPONENT includejs_dev)
+
+    install(FILES "${v8_lib_SOURCE_DIR}/v8_monolith.lib"
+      DESTINATION "lib"
+      COMPONENT includejs_dev)
+
+    target_link_directories(v8 INTERFACE
+      "$<BUILD_INTERFACE:${v8_lib_SOURCE_DIR}>"
+      "$<INSTALL_INTERFACE:lib>")
+
+    target_link_libraries(v8 INTERFACE
+      v8_monolith.lib
+      # V8 depends on the following system libraries, so these must be linked.
+      # Refs: https://github.com/just-js/lo/blob/16b5b5daa21f129007177eb4c9aa60b72c74b704/Makefile#L86
+      winmm.lib
+      dbghelp.lib
+      advapi32.lib)
+
+    install(TARGETS v8
+      EXPORT v8
+      PUBLIC_HEADER DESTINATION "include/v8"
+        COMPONENT includejs_dev
+      ARCHIVE DESTINATION "lib"
+        COMPONENT includejs_dev)
+    install(EXPORT v8
+      DESTINATION "share/cmake/starship"
+      COMPONENT includejs_dev)
+    add_library(V8::V8 ALIAS v8)
+    set(V8_FOUND ON)
   endif()
 endif()

src/engine/CMakeLists.txt

@@ -1,3 +1,12 @@
+if(MSVC)
+  # We link to the v8_monolith.lib static library from just-js that is built in
+  # release mode with "RuntimeLibrary" set to "MT_StaticRelease", so we are
+  # adding the /MT compiler option for both the Debug and Release configs on
+  # Windows.
+  # Refs: https://stackoverflow.com/a/60844772
+  add_compile_options(/MT)
+endif()
+
 set(INCLUDEJS_ENGINE_SOURCES
   common/engine.cc
   common/engine_context.cc

src/engine/v8/engine.cc

@@ -2,8 +2,22 @@
 
 #include <iostream>
 
-#include <libplatform/libplatform.h>
+// This ignores the compiler warnings that get produced by the MSVC compiler
+// while including the v8.h header file.
+#if defined(_MSC_VER)
+#pragma warning(push)
+// warning C4100: '...': unreferenced formal parameter
+#pragma warning(disable : 4100)
+// warning C4127: conditional expression is constant
+#pragma warning(disable : 4127)
+// warning C4458: declaration of 'identifier' hides class member
+#pragma warning(disable : 4458)
+#endif
 #include <v8.h>
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+#include <libplatform/libplatform.h>
 
 namespace includejs {
 

test/packaging/find_package/CMakeLists.txt

@@ -3,6 +3,14 @@ project(includejs_hello VERSION 0.0.1 LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
+if(MSVC)
+  # We link to the v8_monolith.lib static library from just-js that is built in
+  # release mode with "RuntimeLibrary" set to "MT_StaticRelease", so we are
+  # adding the /MT compiler option for both the Debug and Release configs on
+  # Windows.
+  # Refs: https://stackoverflow.com/a/60844772
+  add_compile_options(/MT)
+endif()
 find_package(IncludeJS REQUIRED)
 add_executable(includejs_hello hello.cc)
 target_link_libraries(includejs_hello PRIVATE includejs::engine)