configure/cmake: remove unused define HAVE_FORK

Closes #7276

CMakeLists.txt

@@ -1046,7 +1046,6 @@ check_symbol_exists(_strtoi64      "${CURL_INCLUDES}" HAVE__STRTOI64)
 check_symbol_exists(strerror_r     "${CURL_INCLUDES}" HAVE_STRERROR_R)
 check_symbol_exists(siginterrupt   "${CURL_INCLUDES}" HAVE_SIGINTERRUPT)
 check_symbol_exists(perror         "${CURL_INCLUDES}" HAVE_PERROR)
-check_symbol_exists(fork           "${CURL_INCLUDES}" HAVE_FORK)
 check_symbol_exists(getaddrinfo    "${CURL_INCLUDES}" HAVE_GETADDRINFO)
 check_symbol_exists(freeaddrinfo   "${CURL_INCLUDES}" HAVE_FREEADDRINFO)
 check_symbol_exists(freeifaddrs    "${CURL_INCLUDES}" HAVE_FREEIFADDRS)

lib/config-plan9.h

@@ -96,7 +96,6 @@
 #define HAVE_ERRNO_H 1
 #define HAVE_FCNTL 1
 #define HAVE_FCNTL_H 1
-#define HAVE_FORK 1
 #define HAVE_FREEADDRINFO 1
 #define HAVE_FTRUNCATE 1
 #define HAVE_GETADDRINFO 1

lib/config-tpf.h

@@ -111,10 +111,6 @@
 /* Define to 1 if you have a working fcntl O_NONBLOCK function. */
 #define HAVE_FCNTL_O_NONBLOCK 1
 
-/* Define to 1 if you have the `fork' function. */
-/* #undef HAVE_FORK */
-#define HAVE_FORK 1
-
 /* Define to 1 if you have the `ftruncate' function. */
 #define HAVE_FTRUNCATE 1
 

lib/config-vxworks.h

@@ -128,9 +128,6 @@
 /* Define to 1 if you have a working fcntl O_NONBLOCK function. */
 #define HAVE_FCNTL_O_NONBLOCK 1
 
-/* Define to 1 if you have the `fork' function. */
-#define HAVE_FORK 1
-
 /* Define to 1 if you have the freeaddrinfo function. */
 #define HAVE_FREEADDRINFO 1
 

lib/curl_config.h.cmake

@@ -160,9 +160,6 @@
 /* Define to 1 if you have a working fcntl O_NONBLOCK function. */
 #cmakedefine HAVE_FCNTL_O_NONBLOCK 1
 
-/* Define to 1 if you have the `fork' function. */
-#cmakedefine HAVE_FORK 1
-
 /* Define to 1 if you have the freeaddrinfo function. */
 #cmakedefine HAVE_FREEADDRINFO 1