diff --git a/CMakeLists.txt b/CMakeLists.txt
index e93669eb1f..611388024f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1646,7 +1646,6 @@ check_symbol_exists("getaddrinfo"     "${CURL_INCLUDES};stdlib.h;string.h" HAVE_
 check_symbol_exists("getifaddrs"      "${CURL_INCLUDES};stdlib.h" HAVE_GETIFADDRS)  # ifaddrs.h
 check_symbol_exists("freeaddrinfo"    "${CURL_INCLUDES}" HAVE_FREEADDRINFO)  # ws2tcpip.h sys/socket.h netdb.h
 check_function_exists("pipe"          HAVE_PIPE)
-check_function_exists("pipe2"         HAVE_PIPE2)
 check_function_exists("eventfd"       HAVE_EVENTFD)
 check_symbol_exists("getpeername"     "${CURL_INCLUDES}" HAVE_GETPEERNAME)  # winsock2.h unistd.h proto/bsdsocket.h
 check_symbol_exists("getsockname"     "${CURL_INCLUDES}" HAVE_GETSOCKNAME)  # winsock2.h unistd.h proto/bsdsocket.h
@@ -1654,6 +1653,13 @@ check_function_exists("getrlimit"     HAVE_GETRLIMIT)
 check_function_exists("setlocale"     HAVE_SETLOCALE)
 check_function_exists("setrlimit"     HAVE_SETRLIMIT)
 
+if(NOT APPLE)
+  # Apple platforms do not offer pipe2(), but the iPhone Simulator-specific
+  # /usr/lib/system/libsystem_sim_kernel.dylib exports it. To avoid false
+  # detection, omit this feature check for Apple targets.
+  check_function_exists("pipe2"         HAVE_PIPE2)
+endif()
+
 if(NOT WIN32)
   check_function_exists("if_nametoindex"  HAVE_IF_NAMETOINDEX)  # net/if.h
   check_function_exists("realpath"        HAVE_REALPATH)
diff --git a/configure.ac b/configure.ac
index e9a9afd773..a08216e09a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4127,7 +4127,6 @@ AC_CHECK_FUNCS([\
   gettimeofday \
   mach_absolute_time \
   pipe \
-  pipe2 \
   poll \
   sendmmsg \
   sendmsg \
@@ -4137,6 +4136,15 @@ AC_CHECK_FUNCS([\
   utimes \
 ])
 
+if test "$curl_cv_apple" != "yes"; then
+  dnl Apple platforms do not offer pipe2(), but the iPhone Simulator-specific
+  dnl /usr/lib/system/libsystem_sim_kernel.dylib exports it. To avoid false
+  dnl detection, omit this feature check for Apple targets.
+  AC_CHECK_FUNCS([\
+    pipe2 \
+  ])
+fi
+
 if test "$curl_cv_native_windows" != "yes"; then
   AC_CHECK_FUNCS([\
     if_nametoindex \