CODEWITHSUNDEEP
c++includestm32keil
at-2500
at-2500

Reputation: 593

Keil uVision4 armcc: Using C++ standard includes <cstdint>

I am using Keil uVision4 to develop on a STM32F2 device. I am trying to use C++, which should be possible with the armcc (correct me if I am wrong) supplied with the uVision toolchain. But uVision refuses to accept the standard C++ include way

    #include <cstdint>

doesnt work while

    #include <stdint.h>

works perfectly. When i open cstdint inside uVision (rightclick, open document ) , it opens the file, but as generic file, e.g. not as header file, without the fancy colors.

What am I missing? Both files are in the same folder C:\Keil\ARM\ARMCC\include and it doesnt make any difference whether I force the Compiler to use c++ (by appending --cpp) or not. Is uVision just unable to accept files without endings as header files?

Edit: In response to the answers (thank you for your time!): The error message would be:

    #include <cstdint> and
    #include <cstdint.h>
    typedef uint32_t u32;
    error: #20: identifier uint32_t is undefined

while

    #include <stdint.h> and
    #include <stdint>
    typedef uint32_t u32;
    and 
    #include <cstdint> 
    typedef std::uint32_t u32;
    works perfectly.

which shows what the problem is. Thank you for your help!

Upvotes: 2

Views: 3329

Answers (1)

amaurea
amaurea

Reputation: 5067

What symptoms are you getting to it not working? I.e. what is the error message? It may be that you only need a using namespace std, or to prefix std:: in front of all the types, since the cstdint header places its declarations in the std namespace.

Note however, that cstdint is a very new header, and may not be supported by your compiler. So you may have to settle for stdint.h, which is just as good.

Upvotes: 1

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