opaque: add C main

Author: scivision

src/bool/CMakeLists.txt

@@ -1,6 +1,6 @@
 set_directory_properties(PROPERTIES LABELS bool)
 
-add_library(bool_fortran lib.f90)
+add_library(bool_fortran OBJECT lib.f90)
 
 add_executable(c_fortran_bool main.c)
 target_link_libraries(c_fortran_bool PRIVATE bool_fortran)

src/opaque/CMakeLists.txt

@@ -1,6 +1,10 @@
 set_directory_properties(PROPERTIES LABELS opaque)
 
-add_library(opaque_fortran lib.f90)
+add_library(opaque_fortran OBJECT lib.f90)
+
+add_executable(c_opaque main.c)
+target_link_libraries(c_opaque PRIVATE opaque_fortran)
+add_test(NAME C_Fortran_opaque COMMAND c_opaque)
 
 add_executable(cpp_opaque main.cpp)
 target_link_libraries(cpp_opaque PRIVATE opaque_fortran)

src/opaque/main.c

@@ -0,0 +1,19 @@
+// passing a Fortran-only type to/from C where only Fortran operates on opaque type
+#include <stdio.h>
+
+extern void init_opaque_C(void**);
+
+extern void use_opaque_C(void**);
+
+int main(){
+
+  void* myf;
+
+  init_opaque_C(&myf);
+
+  use_opaque_C(&myf);
+
+  printf("OK: opaque\n");
+
+  return 0;
+}

src/pointer/CMakeLists.txt

@@ -1,4 +1,4 @@
-set_directory_properties(PROPERTIES LABELS opaque)
+set_directory_properties(PROPERTIES LABELS pointer)
 
 add_library(pointer_fortran OBJECT lib.f90)