try to fix things

.github/workflows/build.yml

@@ -76,7 +76,7 @@ jobs:
         if: runner.os == 'Linux'
         shell: bash
         run: |
-          sudo apt install octave
+          sudo apt install octave liboctave-dev
       - name: build Octave mex-file (Windows)
         if: runner.os == 'Windows'
         shell: cmd
@@ -96,7 +96,7 @@ jobs:
         shell: bash
         run: |
           cd OctaveMex
-          octave --cli "mkoctfile --mex octavelibczi.c"
+          octave --evalsu "mkoctfile --mex octavelibczi.c"
           cp build/MEXlibCZI/Release/libmexlibczi.so .
           ls 
       - name: Prepare MATLAB-mex artifact (Windows)

OctaveMex/octavelibczi.c

@@ -299,15 +299,15 @@ static void(*pfn_OnShutdown)(void);
 static void(*pfn_OnInitialize)(void);
 static void(*pfn_mexFunction)(int nlhs, Parameter plhs[], int nrhs, const Parameter prhs[], struct IAppExtensionFunctions* app_functions);
 
-static const WCHAR DllName[] = L"libmexlibczi.dll";
-
 static void Initialize()
 {
     // we try to load the dynamic library containg the mex function here
     // * we try to load the library from the same folder where this mex file is located
     // * therefore, we first get the handle of the module of this mex file, use this handle to get the path of the mex file
     // * and then, we replace the file name with the name of the dynamic library
 #ifdef _WIN32
+    static const WCHAR DllName[] = L"libmexlibczi.dll";
+
     HMODULE hModuleOfMexFile;
     BOOL B = GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, (LPCWSTR)&Initialize, &hModuleOfMexFile);
     if (!B)
@@ -345,6 +345,8 @@ static void Initialize()
     pfn_OnShutdown = (void(*)())GetProcAddress(hModule, "OnShutdown");
     pfn_mexFunction = (void(*)(int, Parameter[], int, const Parameter[], struct IAppExtensionFunctions*))GetProcAddress(hModule, "mexFunction");
 #else
+    static const WCHAR DllName[] = "libmexlibczi.so";
+
     Dl_info dl_info;
     if (dladdr((void*)&Initialize, &dl_info) == 0)
     {