Trying to Compile a Dhrystone C Code program

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  1. #1
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    Trying to Compile a Dhrystone C Code program

    Hi Everyone:

    Please forgive me since I'm a newbie in Linux Programming. (I've been programming in Windows for a long time)

    I'm trying to compile a drhystone C code program that I obtained from here

    http://www.netlib.org/benchmark/dhry-c

    This is a script and I actually downloaded the script and ran "sh dhry-c" to get all my C-files.

    Then, I type in gcc dhry_1.c -o dhrybench and I get this following error:

    /usr/include/sys/times.h:49: error: previous declaration of `times'
    dhry_1.c: In function `main':
    dhry_1.c:266: error: `HZ' undeclared (first use in this function)
    dhry_1.c:266: error: (Each undeclared identifier is reported only once
    dhry_1.c:266: error: for each function it appears in.)

    I'm not exactly sure why I got this error because the "HZ" function is defined in one of the header files.

    Is there an option I need to put into the gcc command line or is this benchmark broken?

    Please respond as soon as possible. Time is very limited. Thanks a lot

  2. #2
    and the hat of wrongness Salem's Avatar
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    Code:
    $ gcc -DTIME dhry_1.c dhry_2.c
    dhry_1.c:31: warning: conflicting types for built-in function ‘malloc’
    dhry_1.c: In function ‘main’:
    dhry_1.c:94: warning: incompatible implicit declaration of built-in function ‘strcpy’
    I get an executable, which I then enter a large number into to get it to produce an answer.

  3. #3
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    Quote Originally Posted by Salem
    Code:
    $ gcc -DTIME dhry_1.c dhry_2.c
    dhry_1.c:31: warning: conflicting types for built-in function ‘malloc’
    dhry_1.c: In function ‘main’:
    dhry_1.c:94: warning: incompatible implicit declaration of built-in function ‘strcpy’
    I get an executable, which I then enter a large number into to get it to produce an answer.
    Dumb question, what does -DTIME do?

  4. #4
    and the hat of wrongness Salem's Avatar
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    man gcc

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