The pure C test works again.

CMakeLists.txt

@@ -15,7 +15,7 @@
 cmake_minimum_required (VERSION 3.5.1) # Need >= 3.8 for first-class CUDA support
 
 ## Project settings
-project(astaroth CXX)
+project(astaroth C CXX)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
@@ -64,3 +64,5 @@ add_subdirectory(src/core)
 if (BUILD_STANDALONE)
     add_subdirectory(src/standalone)
 endif ()
+
+add_subdirectory(src/ctest)

ctest/CMakeLists.txt

@@ -1,3 +0,0 @@
-include_directories(${CMAKE_SOURCE_DIR}/include)
-add_executable(ctest main.c)
-target_link_libraries(ctest astaroth_core)

src/ctest/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_executable(ctest main.c)
+target_link_libraries(ctest PRIVATE astaroth_core m)

src/ctest/main.c

@@ -7,11 +7,12 @@ int
 main(void)
 {
     AcMeshInfo info = {
-        .int_params[AC_mx] = 128,
-        .int_params[AC_my] = 64,
-        .int_params[AC_mz] = 32,
+        .int_params[AC_nx] = 128,
+        .int_params[AC_ny] = 64,
+        .int_params[AC_nz] = 32,
     };
     acInit(info);
+    acIntegrate(0.1f);
     acQuit();
     return EXIT_SUCCESS;
 }