also make building on CI possible

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
         run: mvn -B versions:set --file ./pom.xml -DnewVersion=${GITHUB_REF##*/}
       - name: Build and Test
         id: buildAndTest
-        run: mvn -B clean test
+        run: mvn clean test "-DdevCommandFileDir=C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\"
       - name: Codesign DLL on release
         if: startsWith(github.ref, 'refs/tags/')
         uses: skymatic/code-sign-action@v3

Makefile

@@ -1,19 +1,21 @@
+# Note: make apparently thinks, that options specified with "/" are absolute paths and resolves them. see also https://stackoverflow.com/questions/17012419/d9024-make-unrecognized-source-file-type
 WIN_SDK_VERSION ?= 10.0.22621.0
 MSVC_VERSION ?= 14.41.34120
-HEADERS := /I"src/main/headers" \
-    /I"${JAVA_HOME}\include" \
-    /I"${JAVA_HOME}\include\win32" \
-    /I"C:\Program Files (x86)\Windows Kits\10\Include\$(WIN_SDK_VERSION)\cppwinrt" \
-    /I"C:\Program Files (x86)/Microsoft Visual Studio/2022/BuildTools/VC/Tools/MSVC/$(MSVC_VERSION)/include"
+HEADERS := -I"src\main\headers" \
+	-I"${JAVA_HOME}\include" \
+	-I"${JAVA_HOME}\include\win32" \
+	-I"C:\Program Files (x86)\Windows Kits\10\Include\$(WIN_SDK_VERSION)\cppwinrt" \
+	-I"C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\$(MSVC_VERSION)\include"
 SOURCES := $(wildcard src/main/native/*.cpp)
 
 ########
 
 all: install
 
 install:
-	cl /EHsc /std:c++17 /LD /W4 /guard:cf \
-    	/Fe:src/main/resources/integrations.dll \
-    	$(HEADERS) $(SOURCES) \
-    	/link /NXCOMPAT /DYNAMICBASE \
-    	crypt32.lib shell32.lib ole32.lib uuid.lib user32.lib windowsapp.lib
+	cl -EHsc /std:c++17 -LD -W4 -guard:cf \
+		-Fe"src/main/resources/integrations.dll" \
+		-Fo"target/" \
+		$(HEADERS) $(SOURCES) \
+		-link -NXCOMPAT -DYNAMICBASE \
+		crypt32.lib shell32.lib ole32.lib uuid.lib user32.lib windowsapp.lib

README.md

@@ -14,10 +14,13 @@ This project uses the following JVM properties:
 
 * JDK 22
 * Maven
-* MSVC 2022 toolchain (Visual Studio 2022, Workset "Desktop development with C++")
+* MSVC 2022 toolset (e.g. by installing Visual Studio 2022, Workset "Desktop development with C++")
+* make
 
 ### Build
-Start the _Developer PowerShell for Visual Studio 2022_ and run the following commands:
-```pwsh
+Open a terminal and run
+```
 mvn clean verify
-```
+```
+
+If building the dlls fails with "`cl.exe` cannot be found", you have to specify the developer command file directory as a property `-DdevCommandFileDir=C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\"`.

pom.xml

@@ -295,6 +295,9 @@
 					<name>!skipNativeCompile</name>
 				</property>
 			</activation>
+			<properties>
+				<devCommandFileDir>C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\</devCommandFileDir>
+			</properties>
 			<build>
 				<plugins>
 					<plugin>
@@ -308,13 +311,14 @@
 								</goals>
 								<phase>compile</phase>
 								<configuration>
-									<executable>make</executable>
+									<executable>cmd</executable>
 									<workingDirectory>${project.basedir}</workingDirectory>
 									<environmentVariables>
 										<JAVA_HOME>${java.home}</JAVA_HOME>
 									</environmentVariables>
 									<arguments>
-										<argument>install</argument>
+										<argument>/c</argument>
+										<argument>"${devCommandFileDir}\vcvars64.bat" &amp;&amp; make install</argument>
 									</arguments>
 								</configuration>
 							</execution>