remove configure check for memmove (#3716)

benjaminp · web-flow · commit b1d1c422ccb9 · 2017-09-24T12:08:40.000-07:00
Python requires C implementations provide memmove, so we shouldn't need to check for it. The only place using this configure check was expat, where we can simply always define HAVE_MEMMOVE.
diff --git a/Modules/expat/expat_config.h b/Modules/expat/expat_config.h
@@ -12,6 +12,8 @@
 #define BYTEORDER 1234
 #endif
 
+#define HAVE_MEMMOVE 1
+
 #define XML_NS 1
 #define XML_DTD 1
 #define XML_CONTEXT_BYTES 1024
diff --git a/configure b/configure
@@ -12253,19 +12253,6 @@ fi
 done
 
 
-# Stuff for expat.
-for ac_func in memmove
-do :
-  ac_fn_c_check_func "$LINENO" "memmove" "ac_cv_func_memmove"
-if test "x$ac_cv_func_memmove" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_MEMMOVE 1
-_ACEOF
-
-fi
-done
-
-
 # check for long file support functions
 for ac_func in fseek64 fseeko fstatvfs ftell64 ftello statvfs
 do :
diff --git a/configure.ac b/configure.ac
@@ -3684,9 +3684,6 @@ AC_CHECK_FUNCS(forkpty,,
    )
 )
 
-# Stuff for expat.
-AC_CHECK_FUNCS(memmove)
-
 # check for long file support functions
 AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs)
 
diff --git a/pyconfig.h.in b/pyconfig.h.in
@@ -601,9 +601,6 @@
 /* Define to 1 if you have the `mbrtowc' function. */
 #undef HAVE_MBRTOWC
 
-/* Define to 1 if you have the `memmove' function. */
-#undef HAVE_MEMMOVE
-
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 

Original file line number	Diff line number	Diff line change
`@@ -3684,9 +3684,6 @@ AC_CHECK_FUNCS(forkpty,,`
`3684`	`3684`	`)`
`3685`	`3685`	`)`
`3686`	`3686`
`3687`		`-# Stuff for expat.`
`3688`		`-AC_CHECK_FUNCS(memmove)`
`3689`		`-`
`3690`	`3687`	`# check for long file support functions`
`3691`	`3688`	`AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs)`
`3692`	`3689`