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# CheckPrototypeDefinition

Check if the protoype we expect is correct.

check_prototype_definition(FUNCTION PROTOTYPE RETURN HEADER VARIABLE)

    FUNCTION - The name of the function (used to check if prototype exists)
    PROTOTYPE- The prototype to check.
    RETURN - The return value of the function.
    HEADER - The header files required.
    VARIABLE - The variable to store the result.
               Will be created as an internal cache variable.

Example:

    check_prototype_definition(getpwent_r
     "struct passwd *getpwent_r(struct passwd *src, char *buf, int buflen)"
     "NULL"
     "unistd.h;pwd.h"
     SOLARIS_GETPWENT_R)

The following variables may be set before calling this macro to modify the way the check is run:

    CMAKE_REQUIRED_FLAGS = string of compile command line flags
    CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
    CMAKE_REQUIRED_INCLUDES = list of include directories
    CMAKE_REQUIRED_LIBRARIES = list of libraries to link
    CMAKE_REQUIRED_QUIET = execute quietly without messages

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