diff --git a/configure b/configure
index 611dd446b33..3c624df2f7f 100755
--- a/configure
+++ b/configure
@@ -17471,60 +17471,6 @@ _ACEOF
     ;;
 esac
 
-ac_fn_c_check_type "$LINENO" "mode_t" "ac_cv_type_mode_t" "$ac_includes_default"
-if test "x$ac_cv_type_mode_t" = xyes; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_MODE_T 1
-_ACEOF
-
-
-fi
-ac_fn_c_check_type "$LINENO" "off_t" "ac_cv_type_off_t" "$ac_includes_default"
-if test "x$ac_cv_type_off_t" = xyes; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_OFF_T 1
-_ACEOF
-
-
-fi
-ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default"
-if test "x$ac_cv_type_pid_t" = xyes; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_PID_T 1
-_ACEOF
-
-
-fi
-ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
-if test "x$ac_cv_type_size_t" = xyes; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_SIZE_T 1
-_ACEOF
-
-
-fi
-ac_fn_c_check_type "$LINENO" "ssize_t" "ac_cv_type_ssize_t" "$ac_includes_default"
-if test "x$ac_cv_type_ssize_t" = xyes; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_SSIZE_T 1
-_ACEOF
-
-
-fi
-ac_fn_c_check_type "$LINENO" "long long" "ac_cv_type_long_long" "$ac_includes_default"
-if test "x$ac_cv_type_long_long" = xyes; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_LONG_LONG 1
-_ACEOF
-
-
-fi
 ac_fn_c_check_type "$LINENO" "fsblkcnt_t" "ac_cv_type_fsblkcnt_t" "$ac_includes_default"
 if test "x$ac_cv_type_fsblkcnt_t" = xyes; then :
 
diff --git a/configure.ac b/configure.ac
index 9ab6cfcfb5b..d60460268a3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2312,7 +2312,7 @@ fi
 dnl **** Check for types ****
 
 AC_C_INLINE
-AC_CHECK_TYPES([mode_t, off_t, pid_t, size_t, ssize_t, long long, fsblkcnt_t, fsfilcnt_t])
+AC_CHECK_TYPES([fsblkcnt_t, fsfilcnt_t])
 AC_CHECK_TYPES([sigset_t],,,[#include <sys/types.h>
 #include <signal.h>])
 AC_CHECK_TYPES([request_sense],,,[#include <linux/cdrom.h>])
diff --git a/include/config.h.in b/include/config.h.in
index 0ff9410a4d0..5e2c259b865 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -549,9 +549,6 @@
 /* Define to 1 if you have the `log2f' function. */
 #undef HAVE_LOG2F
 
-/* Define to 1 if the system has the type `long long'. */
-#undef HAVE_LONG_LONG
-
 /* Define to 1 if you have the `lrint' function. */
 #undef HAVE_LRINT
 
@@ -606,9 +603,6 @@
 /* Define to 1 if you have the <mntent.h> header file. */
 #undef HAVE_MNTENT_H
 
-/* Define to 1 if the system has the type `mode_t'. */
-#undef HAVE_MODE_T
-
 /* Define to 1 if you have the `mousemask' function. */
 #undef HAVE_MOUSEMASK
 
@@ -699,9 +693,6 @@
 /* Define to 1 if `_msg_ptr' is a member of `ns_msg'. */
 #undef HAVE_NS_MSG__MSG_PTR
 
-/* Define to 1 if the system has the type `off_t'. */
-#undef HAVE_OFF_T
-
 /* Define if mkdir takes only one argument */
 #undef HAVE_ONE_ARG_MKDIR
 
@@ -723,9 +714,6 @@
 /* Define to 1 if you have the `pclose' function. */
 #undef HAVE_PCLOSE
 
-/* Define to 1 if the system has the type `pid_t'. */
-#undef HAVE_PID_T
-
 /* Define to 1 if you have the `pipe2' function. */
 #undef HAVE_PIPE2
 
@@ -891,18 +879,12 @@
 /* Define to 1 if the system has the type `sigset_t'. */
 #undef HAVE_SIGSET_T
 
-/* Define to 1 if the system has the type `size_t'. */
-#undef HAVE_SIZE_T
-
 /* Define to 1 if you have the `snprintf' function. */
 #undef HAVE_SNPRINTF
 
 /* Define to 1 if you have the `socketpair' function. */
 #undef HAVE_SOCKETPAIR
 
-/* Define to 1 if the system has the type `ssize_t'. */
-#undef HAVE_SSIZE_T
-
 /* Define to 1 if you have the `SSLCopyPeerCertificates' function. */
 #undef HAVE_SSLCOPYPEERCERTIFICATES
 
diff --git a/include/wine/port.h b/include/wine/port.h
index 7b56013c590..4462e58240b 100644
--- a/include/wine/port.h
+++ b/include/wine/port.h
@@ -53,13 +53,18 @@
 #include <io.h>
 #include <process.h>
 
-#endif  /* _WIN32 */
+#ifdef _MSC_VER
 
-/****************************************************************
- * Type definitions
- */
+typedef int mode_t;
+typedef long off_t;
+typedef int pid_t;
+typedef int ssize_t;
 
-#if !defined(_MSC_VER) && !defined(__int64)
+#endif /* _MSC_VER */
+
+#else  /* _WIN32 */
+
+#ifndef __int64
 #  if defined(__x86_64__) || defined(__aarch64__) || defined(_WIN64)
 #    define __int64 long
 #  else
@@ -67,21 +72,12 @@
 #  endif
 #endif
 
-#ifndef HAVE_MODE_T
-typedef int mode_t;
-#endif
-#ifndef HAVE_OFF_T
-typedef long off_t;
-#endif
-#ifndef HAVE_PID_T
-typedef int pid_t;
-#endif
-#ifndef HAVE_SIZE_T
-typedef unsigned int size_t;
-#endif
-#ifndef HAVE_SSIZE_T
-typedef int ssize_t;
-#endif
+#endif  /* _WIN32 */
+
+/****************************************************************
+ * Type definitions
+ */
+
 #ifndef HAVE_FSBLKCNT_T
 typedef unsigned long fsblkcnt_t;
 #endif