CheckPrototypeDefinition

Check if the prototype we expect is correct.

check_prototype_definition
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 function 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_LINK_OPTIONS

New in version 3.14: list of options to pass to link command.

CMAKE_REQUIRED_LIBRARIES

list of libraries to link.

CMAKE_REQUIRED_QUIET

New in version 3.1: execute quietly without messages.