diff --git a/src/ftdi.h b/src/ftdi.h
index 6bb7a3e..daa8fdb 100644
--- a/src/ftdi.h
+++ b/src/ftdi.h
@@ -172,11 +172,14 @@ enum ftdi_module_detach_mode
 
 #ifdef __GNUC__
     #define DEPRECATED(func) func __attribute__ ((deprecated))
+    #define EXPORT /**/
 #elif defined(_MSC_VER)
     #define DEPRECATED(func) __declspec(deprecated) func
+    #define EXPORT __declspec(dllexport)
 #else
     #pragma message("WARNING: You need to implement DEPRECATED for this compiler")
     #define DEPRECATED(func) func
+    #define EXPORT /**/
 #endif
 
 
@@ -361,95 +364,95 @@ extern "C"
 {
 #endif
 
-    int ftdi_init(struct ftdi_context *ftdi);
-    struct ftdi_context *ftdi_new(void);
-    int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);
-
-    void ftdi_deinit(struct ftdi_context *ftdi);
-    void ftdi_free(struct ftdi_context *ftdi);
-    void ftdi_set_usbdev (struct ftdi_context *ftdi, usb_dev_handle *usbdev);
-
-    int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist,
-                          int vendor, int product);
-    void ftdi_list_free(struct ftdi_device_list **devlist);
-    void ftdi_list_free2(struct ftdi_device_list *devlist);
-    int ftdi_usb_get_strings(struct ftdi_context *ftdi, struct usb_device *dev,
-                             char * manufacturer, int mnf_len,
-                             char * description, int desc_len,
-                             char * serial, int serial_len);
-
-    int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
-    int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
+    int EXPORT ftdi_init(struct ftdi_context *ftdi);
+    struct ftdi_context EXPORT *ftdi_new(void);
+    int EXPORT ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);
+
+    void EXPORT ftdi_deinit(struct ftdi_context *ftdi);
+    void EXPORT ftdi_free(struct ftdi_context *ftdi);
+    void EXPORT ftdi_set_usbdev (struct ftdi_context *ftdi, usb_dev_handle *usbdev);
+
+    int EXPORT ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist,
+                                 int vendor, int product);
+    void EXPORT ftdi_list_free(struct ftdi_device_list **devlist);
+    void EXPORT ftdi_list_free2(struct ftdi_device_list *devlist);
+    int EXPORT ftdi_usb_get_strings(struct ftdi_context *ftdi, struct usb_device *dev,
+                                    char * manufacturer, int mnf_len,
+                                    char * description, int desc_len,
+                                    char * serial, int serial_len);
+
+    int EXPORT ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
+    int EXPORT ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
                            const char* description, const char* serial);
-    int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
-                           const char* description, const char* serial, unsigned int index);
-    int ftdi_usb_open_dev(struct ftdi_context *ftdi, struct usb_device *dev);
-    int ftdi_usb_open_string(struct ftdi_context *ftdi, const char* description);
+    int EXPORT ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
+                                        const char* description, const char* serial, unsigned int index);
+    int EXPORT ftdi_usb_open_dev(struct ftdi_context *ftdi, struct usb_device *dev);
+    int EXPORT ftdi_usb_open_string(struct ftdi_context *ftdi, const char* description);
 
-    int ftdi_usb_close(struct ftdi_context *ftdi);
-    int ftdi_usb_reset(struct ftdi_context *ftdi);
-    int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi);
-    int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi);
-    int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
+    int EXPORT ftdi_usb_close(struct ftdi_context *ftdi);
+    int EXPORT ftdi_usb_reset(struct ftdi_context *ftdi);
+    int EXPORT ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi);
+    int EXPORT ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi);
+    int EXPORT ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
 
-    int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
-    int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
-                               enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
-    int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
-                                enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity,
-                                enum ftdi_break_type break_type);
+    int EXPORT ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
+    int EXPORT ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
+                                      enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
+    int EXPORT ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
+                                       enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity,
+                                       enum ftdi_break_type break_type);
 
-    int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
-    int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
-    int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
+    int EXPORT ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
+    int EXPORT ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
+    int EXPORT ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
 
-    int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
-    int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
-    int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
+    int EXPORT ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
+    int EXPORT ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
+    int EXPORT ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
 
-    int ftdi_write_data_async(struct ftdi_context *ftdi, unsigned char *buf, int size);
-    void ftdi_async_complete(struct ftdi_context *ftdi, int wait_for_more);
+    int EXPORT ftdi_write_data_async(struct ftdi_context *ftdi, unsigned char *buf, int size);
+    void EXPORT ftdi_async_complete(struct ftdi_context *ftdi, int wait_for_more);
 
-    int DEPRECATED(ftdi_enable_bitbang(struct ftdi_context *ftdi, unsigned char bitmask));
-    int ftdi_disable_bitbang(struct ftdi_context *ftdi);
-    int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
-    int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins);
+    int EXPORT DEPRECATED(ftdi_enable_bitbang(struct ftdi_context *ftdi, unsigned char bitmask));
+    int EXPORT ftdi_disable_bitbang(struct ftdi_context *ftdi);
+    int EXPORT ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
+    int EXPORT ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins);
 
-    int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
-    int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency);
+    int EXPORT ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
+    int EXPORT ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency);
 
-    int ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status);
+    int EXPORT ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status);
 
     /* flow control */
-    int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
-    int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts);
-    int ftdi_setdtr(struct ftdi_context *ftdi, int state);
-    int ftdi_setrts(struct ftdi_context *ftdi, int state);
+    int EXPORT ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
+    int EXPORT ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts);
+    int EXPORT ftdi_setdtr(struct ftdi_context *ftdi, int state);
+    int EXPORT ftdi_setrts(struct ftdi_context *ftdi, int state);
 
-    int ftdi_set_event_char(struct ftdi_context *ftdi, unsigned char eventch, unsigned char enable);
-    int ftdi_set_error_char(struct ftdi_context *ftdi, unsigned char errorch, unsigned char enable);
+    int EXPORT ftdi_set_event_char(struct ftdi_context *ftdi, unsigned char eventch, unsigned char enable);
+    int EXPORT ftdi_set_error_char(struct ftdi_context *ftdi, unsigned char errorch, unsigned char enable);
 
     /* set eeprom size */
-    void ftdi_eeprom_setsize(struct ftdi_context *ftdi, struct ftdi_eeprom *eeprom, int size);
+    void EXPORT ftdi_eeprom_setsize(struct ftdi_context *ftdi, struct ftdi_eeprom *eeprom, int size);
 
     /* init and build eeprom from ftdi_eeprom structure */
-    void ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom);
-    void ftdi_eeprom_free(struct ftdi_eeprom *eeprom);
-    int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output);
-    int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *output, int size);
+    void EXPORT ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom);
+    void EXPORT ftdi_eeprom_free(struct ftdi_eeprom *eeprom);
+    int EXPORT ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output);
+    int EXPORT ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *output, int size);
 
     /* "eeprom" needs to be valid 128 byte eeprom (generated by the eeprom generator)
        the checksum of the eeprom is valided */
-    int ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
-    int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid);
-    int ftdi_read_eeprom_getsize(struct ftdi_context *ftdi, unsigned char *eeprom, int maxsize);
-    int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
-    int ftdi_erase_eeprom(struct ftdi_context *ftdi);
+    int EXPORT ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
+    int EXPORT ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid);
+    int EXPORT ftdi_read_eeprom_getsize(struct ftdi_context *ftdi, unsigned char *eeprom, int maxsize);
+    int EXPORT ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
+    int EXPORT ftdi_erase_eeprom(struct ftdi_context *ftdi);
 
-    int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val);
-    int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, unsigned short eeprom_val);
+    int EXPORT ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val);
+    int EXPORT ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, unsigned short eeprom_val);
 
-    char *ftdi_get_error_string(struct ftdi_context *ftdi);
+    char EXPORT *ftdi_get_error_string(struct ftdi_context *ftdi);
 
 #ifdef __cplusplus
 }