CODEWITHSUNDEEP
c++ubuntucompilation
hooman naghiee
hooman naghiee

Reputation: 103

how to compile project with uchar_t in ubuntu

I have a project source code

it contain uchar_t

I need to compile this project in Ubuntu 13.10 but when run compilation that it warn : 

unknown type name ‘uchar_t’

anyone have idea to solve. replace uchar_t or other solution ...

Upvotes: 4

Views: 3718

Answers (3)

Patrick Schlüter
Patrick Schlüter

Reputation: 11841

The types uchar_t, ushort_t, uint_t and ulong_t are Solaris specific types defined in sys/types.h and commented as POSIX Extensions. That comment is ambiguous and probably means that they are (vendor specific) extensions to the POSIX standard, not that they're part of it. Some other systems define them, others not (cygwin, Linux). They are quite straight-forward and can be quickly replaced by adding 

typedef unsigned char   uchar_t;
typedef unsigned short  ushort_t;
typedef unsigned int    uint_t;
typedef unsigned long   ulong_t;

somewhere in the project's headers. I like them a lot because they are shorter, 1 word, follow the POSIX and the inttypes.h naming style and are quite obvious.

Upvotes: 2

Dietmar Kühl
Dietmar Kühl

Reputation: 153840

It seems, uchar_t is meant to represent some character in which case you probably want to make it an unsigned character type, e.g.:

typedef unsigned char uchar_t;

Whether this works depends on what the code really intended to do. Without context it is impossible to tell what is intended. In either case, I would use a typedef in a strategic place rather than replacing the type. Likewise, uint_t is probably meant to be

typedef unsigned int uint_t;

Whether these typedefs do the right thing, needs to be verified, though.

Upvotes: 4

lrineau
lrineau

Reputation: 6274

That is probably an alias for unsigned char.

Upvotes: 2

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