Add windows support

Author: stringintech

Makefile

@@ -7,6 +7,7 @@ all: build-kernel test
 build-kernel:
 	cd depend/bitcoin && \
 	cmake -B build \
+		-DCMAKE_BUILD_TYPE=RelWithDebInfo \
 		-DBUILD_SHARED_LIBS=ON \
 		-DBUILD_KERNEL_LIB=ON \
 		-DBUILD_KERNEL_TEST=OFF \
@@ -21,7 +22,7 @@ build-kernel:
 		-DBUILD_UTIL_CHAINSTATE=OFF \
 		-DBUILD_CLI=OFF \
 		-DENABLE_IPC=OFF && \
-	cmake --build build --target bitcoinkernel -j $(shell nproc 2>/dev/null || echo 4)
+	cmake --build build --config RelWithDebInfo --parallel$(if $(NUM_JOBS),=$(NUM_JOBS)) # Use NUM_JOBS variable if set (e.g., make build-kernel NUM_JOBS=8), otherwise auto-detect CPU cores
 
 build:
 	go build ./...

kernel/cgo_unix.go

@@ -0,0 +1,9 @@
+//go:build unix
+
+package kernel
+
+/*
+#cgo CFLAGS: -I../depend/bitcoin/src
+#cgo LDFLAGS: -L../depend/bitcoin/build/lib -lbitcoinkernel -Wl,-rpath,${SRCDIR}/../depend/bitcoin/build/lib
+*/
+import "C"

kernel/cgo_windows.go

@@ -0,0 +1,9 @@
+//go:build windows
+
+package kernel
+
+/*
+#cgo CFLAGS: -I../depend/bitcoin/src
+#cgo LDFLAGS: -L../depend/bitcoin/build/bin/RelWithDebInfo -lbitcoinkernel -lbcrypt -lshell32
+*/
+import "C"

kernel/kernel.go

@@ -16,9 +16,3 @@
 // resource cleanup and is not recommended for long-running programs or when working
 // with many objects.
 package kernel
-
-/*
-#cgo CFLAGS: -I../depend/bitcoin/src
-#cgo LDFLAGS: -L../depend/bitcoin/build/lib -lbitcoinkernel -Wl,-rpath,${SRCDIR}/../depend/bitcoin/build/lib
-*/
-import "C"