Arduino: 1.6.5 (Windows 8.1), Board: "Arduino Pro or Pro Mini, ATmega328 (5V, 16 MHz)"

In file included from C:\Users\PC\Documents\Arduino\libraries\FastSerial/BetterStream.h:16:0,
                 from C:\Users\PC\Documents\Arduino\libraries\FastSerial/FastSerial.h:56,
                 from Mavlink.h:6,
                 from Mavlink.cpp:21:
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h: In function 'int strcasecmp_P(const char*, const prog_char_t*)':
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:108:38: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
     return strcasecmp_P(str1, (const prog_char *)pstr);
                                      ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:108:38: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:108:32: error: expected primary-expression before 'const'
     return strcasecmp_P(str1, (const prog_char *)pstr);
                                ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:108:32: error: expected ')' before 'const'
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h: In function 'int strcmp_P(const char*, const prog_char_t*)':
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:113:34: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
     return strcmp_P(str1, (const prog_char *)pstr);
                                  ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:113:34: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:113:28: error: expected primary-expression before 'const'
     return strcmp_P(str1, (const prog_char *)pstr);
                            ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:113:28: error: expected ')' before 'const'
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h: In function 'size_t strlen_P(const prog_char_t*)':
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:118:28: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
     return strlen_P((const prog_char *)pstr);
                            ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:118:28: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:118:22: error: expected primary-expression before 'const'
     return strlen_P((const prog_char *)pstr);
                      ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:118:22: error: expected ')' before 'const'
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h: In function 'void* memcpy_P(void*, const prog_char_t*, size_t)':
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:123:34: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
     return memcpy_P(dest, (const prog_char *)src, n);
                                  ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:123:34: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:123:28: error: expected primary-expression before 'const'
     return memcpy_P(dest, (const prog_char *)src, n);
                            ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:123:28: error: expected ')' before 'const'
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h: In function 'char* strncpy_P(char*, const prog_char_t*, size_t)':
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:148:37: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
     return strncpy_P(buffer, (const prog_char *)pstr, buffer_size);
                                     ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:148:37: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:148:31: error: expected primary-expression before 'const'
     return strncpy_P(buffer, (const prog_char *)pstr, buffer_size);
                               ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:148:31: error: expected ')' before 'const'
In file included from C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/WString.h:29:0,
                 from C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Print.h:26,
                 from C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Stream.h:26,
                 from C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\SoftwareSerial/SoftwareSerial.h:36,
                 from Mavlink.h:5,
                 from Mavlink.cpp:21:
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h: In function 'uintptr_t pgm_read_pointer(const void*)':
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:165:47: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
             u.a[i] = pgm_read_byte(i + (const prog_char *)s);
                                               ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:165:47: error: ISO C++ forbids declaration of 'type name' with no type [-fpermissive]
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:165:41: error: expected primary-expression before 'const'
             u.a[i] = pgm_read_byte(i + (const prog_char *)s);
                                         ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:165:41: error: expected ')' before 'const'
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:165:22: error: expected ')' before ';' token
             u.a[i] = pgm_read_byte(i + (const prog_char *)s);
                      ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/../AP_Common/AP_Common.h:165:22: error: expected ')' before ';' token
In file included from C:\Users\PC\Documents\Arduino\libraries\FastSerial/FastSerial.h:56:0,
                 from Mavlink.h:6,
                 from Mavlink.cpp:21:
C:\Users\PC\Documents\Arduino\libraries\FastSerial/BetterStream.h: At global scope:
C:\Users\PC\Documents\Arduino\libraries\FastSerial/BetterStream.h:28:41: error: 'prog_char' does not name a type
         void            _printf_P(const prog_char *, ...);
                                         ^
C:\Users\PC\Documents\Arduino\libraries\FastSerial/BetterStream.h:28:51: error: ISO C++ forbids declaration of 'parameter' with no type [-fpermissive]
         void            _printf_P(const prog_char *, ...);
                                                   ^
Error compiling.

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