test: fixed build on Windows (#7)

* test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: removed useless file Signed-off-by: Paolo Insogna <paolo@cowtech.it> --------- Signed-off-by: Paolo Insogna <paolo@cowtech.it>
nodejs · cjihrig · Feb 25, 2026 · Mar 12, 2026 · Mar 17, 2026 · Mar 19, 2026
commit 4b17d600748803e0f93ba5c3a0e7ffc4fd09ed4c
diff --git a/test/ffi/fixture_library/binding.gyp b/test/ffi/fixture_library/binding.gyp
@@ -4,15 +4,6 @@
       'target_name': 'ffi_test_library',
       'sources': ['ffi_test_library.c'],
       'type': 'shared_library',
-      'conditions': [
-        [ 'OS=="win"', {
-          'msvs_settings': {
-            'VCLinkerTool': {
-              'ModuleDefinitionFile': 'ffi_test_library.def',
-            },
-          },
-        }],
-      ],
     }
   ]
 }
diff --git a/test/ffi/fixture_library/ffi_test_library.c b/test/ffi/fixture_library/ffi_test_library.c
@@ -3,87 +3,93 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef _WIN32
+#define FFI_EXPORT __declspec(dllexport)
+#else
+#define FFI_EXPORT
+#endif
+
 // Integer operations.
 
-int8_t add_i8(int8_t a, int8_t b) {
+FFI_EXPORT int8_t add_i8(int8_t a, int8_t b) {
   return a + b;
 }
 
-uint8_t add_u8(uint8_t a, uint8_t b) {
+FFI_EXPORT uint8_t add_u8(uint8_t a, uint8_t b) {
   return a + b;
 }
 
-int16_t add_i16(int16_t a, int16_t b) {
+FFI_EXPORT int16_t add_i16(int16_t a, int16_t b) {
   return a + b;
 }
 
-uint16_t add_u16(uint16_t a, uint16_t b) {
+FFI_EXPORT uint16_t add_u16(uint16_t a, uint16_t b) {
   return a + b;
 }
 
-int32_t add_i32(int32_t a, int32_t b) {
+FFI_EXPORT int32_t add_i32(int32_t a, int32_t b) {
   return a + b;
 }
 
-uint32_t add_u32(uint32_t a, uint32_t b) {
+FFI_EXPORT uint32_t add_u32(uint32_t a, uint32_t b) {
   return a + b;
 }
 
-int64_t add_i64(int64_t a, int64_t b) {
+FFI_EXPORT int64_t add_i64(int64_t a, int64_t b) {
   return a + b;
 }
 
-uint64_t add_u64(uint64_t a, uint64_t b) {
+FFI_EXPORT uint64_t add_u64(uint64_t a, uint64_t b) {
   return a + b;
 }
 
-char identity_char(char value) {
+FFI_EXPORT char identity_char(char value) {
   return value;
 }
 
-int32_t char_is_signed(void) {
+FFI_EXPORT int32_t char_is_signed(void) {
   return ((char)-1) < 0;
 }
 
 // Floating point operations.
 
-float add_f32(float a, float b) {
+FFI_EXPORT float add_f32(float a, float b) {
   return a + b;
 }
 
-float multiply_f32(float a, float b) {
+FFI_EXPORT float multiply_f32(float a, float b) {
   return a * b;
 }
 
-double add_f64(double a, double b) {
+FFI_EXPORT double add_f64(double a, double b) {
   return a + b;
 }
 
-double multiply_f64(double a, double b) {
+FFI_EXPORT double multiply_f64(double a, double b) {
   return a * b;
 }
 
 // Pointer operations.
 
-void* identity_pointer(void* ptr) {
+FFI_EXPORT void* identity_pointer(void* ptr) {
   return ptr;
 }
 
-uint64_t pointer_to_usize(void* ptr) {
+FFI_EXPORT uint64_t pointer_to_usize(void* ptr) {
   return (uint64_t)(uintptr_t)ptr;
 }
 
-void* usize_to_pointer(uint64_t addr) {
+FFI_EXPORT void* usize_to_pointer(uint64_t addr) {
   return (void*)(uintptr_t)addr;
 }
 
 // String operations.
 
-uint64_t string_length(const char* str) {
+FFI_EXPORT uint64_t string_length(const char* str) {
   return str ? strlen(str) : 0;
 }
 
-char* string_concat(const char* a, const char* b) {
+FFI_EXPORT char* string_concat(const char* a, const char* b) {
   if (!a || !b) {
     return NULL;
   }
@@ -101,7 +107,7 @@ char* string_concat(const char* a, const char* b) {
   return result;
 }
 
-char* string_duplicate(const char* str) {
+FFI_EXPORT char* string_duplicate(const char* str) {
   if (!str) {
     return NULL;
   }
@@ -117,21 +123,21 @@ char* string_duplicate(const char* str) {
   return result;
 }
 
-void free_string(char* str) {
+FFI_EXPORT void free_string(char* str) {
   free(str);
 }
 
 // Buffer/Array operations.
 
-void fill_buffer(uint8_t* buffer, uint64_t length, uint32_t value) {
+FFI_EXPORT void fill_buffer(uint8_t* buffer, uint64_t length, uint32_t value) {
   if (!buffer) {
     return;
   }
 
   memset(buffer, (uint8_t)value, length);
 }
 
-uint64_t sum_buffer(const uint8_t* buffer, uint64_t length) {
+FFI_EXPORT uint64_t sum_buffer(const uint8_t* buffer, uint64_t length) {
   if (!buffer) {
     return 0;
   }
@@ -143,7 +149,7 @@ uint64_t sum_buffer(const uint8_t* buffer, uint64_t length) {
   return sum;
 }
 
-void reverse_buffer(uint8_t* buffer, uint64_t length) {
+FFI_EXPORT void reverse_buffer(uint8_t* buffer, uint64_t length) {
   if (!buffer || length == 0) {
     return;
   }
@@ -168,53 +174,53 @@ typedef struct {
   float z;
 } Point3D;
 
-Point make_point(int32_t x, int32_t y) {
+FFI_EXPORT Point make_point(int32_t x, int32_t y) {
   Point p = {x, y};
   return p;
 }
 
-int32_t point_distance_squared(Point p1, Point p2) {
+FFI_EXPORT int32_t point_distance_squared(Point p1, Point p2) {
   int32_t dx = p1.x - p2.x;
   int32_t dy = p1.y - p2.y;
   return dx * dx + dy * dy;
 }
 
-Point3D make_point3d(float x, float y, float z) {
+FFI_EXPORT Point3D make_point3d(float x, float y, float z) {
   Point3D p = {x, y, z};
   return p;
 }
 
-float point3d_magnitude_squared(Point3D p) {
+FFI_EXPORT float point3d_magnitude_squared(Point3D p) {
   return p.x * p.x + p.y * p.y + p.z * p.z;
 }
 
 // Boolean operations.
 
-int32_t logical_and(int32_t a, int32_t b) {
+FFI_EXPORT int32_t logical_and(int32_t a, int32_t b) {
   return (a && b) ? 1 : 0;
 }
 
-int32_t logical_or(int32_t a, int32_t b) {
+FFI_EXPORT int32_t logical_or(int32_t a, int32_t b) {
   return (a || b) ? 1 : 0;
 }
 
-int32_t logical_not(int32_t a) {
+FFI_EXPORT int32_t logical_not(int32_t a) {
   return !a ? 1 : 0;
 }
 
 // Void operations (side effects).
 
 static int32_t global_counter = 0;
 
-void increment_counter(void) {
+FFI_EXPORT void increment_counter(void) {
   global_counter++;
 }
 
-int32_t get_counter(void) {
+FFI_EXPORT int32_t get_counter(void) {
   return global_counter;
 }
 
-void reset_counter(void) {
+FFI_EXPORT void reset_counter(void) {
   global_counter = 0;
 }
 
@@ -227,45 +233,45 @@ typedef void (*VoidCallback)(void);
 typedef void (*StringCallback)(const char*);
 typedef int32_t (*BinaryIntCallback)(int32_t, int32_t);
 
-int32_t call_int_callback(IntCallback callback, int32_t value) {
+FFI_EXPORT int32_t call_int_callback(IntCallback callback, int32_t value) {
   if (!callback) {
     return -1;
   }
 
   return callback(value);
 }
 
-int8_t call_int8_callback(Int8Callback callback, int8_t value) {
+FFI_EXPORT int8_t call_int8_callback(Int8Callback callback, int8_t value) {
   if (!callback) {
     return 0;
   }
 
   return callback(value);
 }
 
-int32_t call_pointer_callback_is_null(PointerCallback callback) {
+FFI_EXPORT int32_t call_pointer_callback_is_null(PointerCallback callback) {
   if (!callback) {
     return 1;
   }
 
   return callback() == NULL;
 }
 
-void call_void_callback(VoidCallback callback) {
+FFI_EXPORT void call_void_callback(VoidCallback callback) {
   if (callback) {
     callback();
   }
 }
 
-void call_string_callback(StringCallback callback, const char* str) {
+FFI_EXPORT void call_string_callback(StringCallback callback, const char* str) {
   if (callback) {
     callback(str);
   }
 }
 
-int32_t call_binary_int_callback(BinaryIntCallback callback,
-                                 int32_t a,
-                                 int32_t b) {
+FFI_EXPORT int32_t call_binary_int_callback(BinaryIntCallback callback,
+                                            int32_t a,
+                                            int32_t b) {
   if (!callback) {
     return -1;
   }
@@ -274,7 +280,8 @@ int32_t call_binary_int_callback(BinaryIntCallback callback,
 }
 
 // Callback that calls multiple times.
-void call_callback_multiple_times(IntCallback callback, int32_t times) {
+FFI_EXPORT void call_callback_multiple_times(IntCallback callback,
+                                             int32_t times) {
   if (!callback) {
     return;
   }
@@ -286,78 +293,80 @@ void call_callback_multiple_times(IntCallback callback, int32_t times) {
 
 // Edge cases and error conditions.
 
-int32_t divide_i32(int32_t a, int32_t b) {
+FFI_EXPORT int32_t divide_i32(int32_t a, int32_t b) {
   if (b == 0) {
     return 0;
   }
 
   return a / b;
 }
 
-void* allocate_memory(size_t size) {
+FFI_EXPORT void* allocate_memory(size_t size) {
   return malloc(size);
 }
 
-void deallocate_memory(void* ptr) {
+FFI_EXPORT void deallocate_memory(void* ptr) {
   free(ptr);
 }
 
 // Null pointer handling.
-int32_t safe_strlen(const char* str) {
+FFI_EXPORT int32_t safe_strlen(const char* str) {
   return str ? (int32_t)strlen(str) : -1;
 }
 
 // Multi-parameter functions.
 
-int32_t sum_five_i32(int32_t a, int32_t b, int32_t c, int32_t d, int32_t e) {
+FFI_EXPORT int32_t
+sum_five_i32(int32_t a, int32_t b, int32_t c, int32_t d, int32_t e) {
   return a + b + c + d + e;
 }
 
-double sum_five_f64(double a, double b, double c, double d, double e) {
+FFI_EXPORT double sum_five_f64(
+    double a, double b, double c, double d, double e) {
   return a + b + c + d + e;
 }
 
 // Mixed parameter types.
 
-double mixed_operation(int32_t i, float f, double d, uint32_t u) {
+FFI_EXPORT double mixed_operation(int32_t i, float f, double d, uint32_t u) {
   return (double)i + (double)f + d + (double)u;
 }
 
 // Constant values for testing.
 
-const int32_t CONSTANT_I32 = 42;
-const uint64_t CONSTANT_U64 = 0xDEADBEEFCAFEBABEULL;
-const float CONSTANT_F32 = 3.14159f;
-const double CONSTANT_F64 = 2.718281828459045;
-const char* CONSTANT_STRING = "Hello from FFI addon";
+FFI_EXPORT const int32_t CONSTANT_I32 = 42;
+FFI_EXPORT const uint64_t CONSTANT_U64 = 0xDEADBEEFCAFEBABEULL;
+FFI_EXPORT const float CONSTANT_F32 = 3.14159f;
+FFI_EXPORT const double CONSTANT_F64 = 2.718281828459045;
+FFI_EXPORT const char* CONSTANT_STRING = "Hello from FFI addon";
 
 // Array/pointer indexing.
 
-int32_t array_get_i32(const int32_t* arr, size_t index) {
+FFI_EXPORT int32_t array_get_i32(const int32_t* arr, size_t index) {
   if (!arr) {
     return 0;
   }
 
   return arr[index];
 }
 
-void array_set_i32(int32_t* arr, size_t index, int32_t value) {
+FFI_EXPORT void array_set_i32(int32_t* arr, size_t index, int32_t value) {
   if (!arr) {
     return;
   }
 
   arr[index] = value;
 }
 
-double array_get_f64(const double* arr, size_t index) {
+FFI_EXPORT double array_get_f64(const double* arr, size_t index) {
   if (!arr) {
     return 0.0;
   }
 
   return arr[index];
 }
 
-void array_set_f64(double* arr, size_t index, double value) {
+FFI_EXPORT void array_set_f64(double* arr, size_t index, double value) {
   if (!arr) {
     return;
   }