uint32 t does not name a type

Question

I m trying to compile a C   software package that was written in 2007 and I m getting this error   error     uint32 t    does not name a type  This is happening in 64-bit Ubuntu using g   4 5 2  It compiles fine on 64-bit CentOS using g   4 1 2   Is there an  include or a compiler flag that I m missing  Or  should I use typedef to assign uint32 t to a size t or maybe an unsigned int

User · Answer

The other answers assume that your compiler is C++11 compliant. That is fine if it is. But what if you are using an older compiler?

I picked up the following hack somewhere on the net. It works well enough for me:

  #if defined __UINT32_MAX__ or UINT32_MAX
  #include <inttypes.h>
  #else
  typedef unsigned char uint8_t;
  typedef unsigned short uint16_t;
  typedef unsigned long uint32_t;
  typedef unsigned long long uint64_t;
  #endif

It is not portable, of course. But it might work for your compiler.

User · Answer

You need to include stdint h    include  lt stdint h gt

User · Answer

if it happened when you include opencv header   I would recommand that change the order of headers   put the opencv headers just below the standard C   header   like this    include lt iostream gt   include lt opencv2 core core hpp gt   include lt opencv2 highgui highgui hpp gt

User · Answer

I also encountered the same problem on Mac OSX 10 6 8 and unfortunately adding  include  lt stdint h gt  or  lt cstdint h gt  to the corresponding file did not solve my problem  However  after more search  I found this solution advicing to add  include  lt sys types h gt  which worked well for me

User · Answer

Add the following in the base mk file  The following 3rd line is important -include   TOP  defs mk  CFLAGS   DEBUG  -Wall -W -Wwrite-strings  CFLAGS C -Wmissing-prototypes CFLAGS CXX -std c  0x LDFLAGS  LIBS    to avoid the  error This file requires compiler and library support for the upcoming ISO C   standard  C  0x  This support is currently experimental  and must be enabled with the -std c  0x or -std gnu  0x compiler options

User · Answer

just navigate to  usr include x86 64-linux-gnu bits open stdint-uintn h and add these lines  typedef   uint8 t uint8 t  typedef   uint16 t uint16 t  typedef   uint32 t uint32 t  typedef   uint64 t uint64 t    again open stdint-intn h  and add   typedef   int8 t int8 t  typedef   int16 t int16 t  typedef   int32 t int32 t  typedef   int64 t int64 t    note these lines are already present just copy and add the missing lines cheerss

User · Answer

You need to include iostream   include  lt iostream gt  using namespace std

User · Answer

You need to  include  lt cstdint gt   but that may not always work   The problem is that some compiler often automatically export names defined in various headers or provided types before such standards were in place   Now  I said  may not always work   That s because the cstdint header is part of the C  11 standard and is not always available on current C   compilers  but often is   The stdint h header is the C equivalent and is part of C99   For best portability  I d recommend using Boost s boost cstdint hpp header  if you re willing to use boost  Otherwise  you ll probably be able to get away with  include ing  lt cstdint gt

User · Answer

I had tha same problem trying to compile a lib I download from the internet  In my case  there was already a  include  lt cstdint gt  in the code  I solved it adding a   using std  uint32 t

[c++] 'uint32_t' does not name a type

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