Use recommended way to handle utf*.h headers and obsolete symbols

acinclude.m4

@@ -2241,6 +2241,10 @@ AC_DEFUN([PHP_SETUP_ICU],[
     ICU_CXXFLAGS=`$ICU_CONFIG --cxxflags`
     if test "$icu_version" -ge "49000"; then
       ICU_CXXFLAGS="$ICU_CXXFLAGS -DUNISTR_FROM_CHAR_EXPLICIT=explicit -DUNISTR_FROM_STRING_EXPLICIT=explicit"
+      ICU_CFLAGS="-DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1"
+    fi
+    if test "$icu_version" -ge "60000"; then
+      ICU_CFLAGS="$ICU_CFLAGS -DU_HIDE_OBSOLETE_UTF_OLD_H=1"
     fi
   fi
 ])

ext/intl/config.m4

@@ -9,7 +9,7 @@ if test "$PHP_INTL" != "no"; then
   PHP_SETUP_ICU(INTL_SHARED_LIBADD)
   PHP_SUBST(INTL_SHARED_LIBADD)
   PHP_REQUIRE_CXX()
-  INTL_COMMON_FLAGS="$ICU_INCS -Wno-write-strings -D__STDC_LIMIT_MACROS -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1"
+  INTL_COMMON_FLAGS="$ICU_INCS $ICU_CFLAGS -Wno-write-strings -D__STDC_LIMIT_MACROS -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1"
   if test "$icu_version" -ge "4002"; then
     icu_spoof_src=" spoofchecker/spoofchecker_class.c \
     spoofchecker/spoofchecker.c\

ext/intl/config.w32

@@ -129,7 +129,7 @@ if (PHP_INTL != "no") {
 			ADD_FLAG("LIBS_INTL", "iculx.lib");
 		}
 
-		ADD_FLAG("CFLAGS_INTL", "/EHsc /DUNISTR_FROM_CHAR_EXPLICIT=explicit /DUNISTR_FROM_STRING_EXPLICIT=explicit");
+		ADD_FLAG("CFLAGS_INTL", "/EHsc /DUNISTR_FROM_CHAR_EXPLICIT=explicit /DUNISTR_FROM_STRING_EXPLICIT=explicit /DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 /DU_HIDE_OBSOLETE_UTF_OLD_H=1");
 		AC_DEFINE("HAVE_INTL", 1, "Internationalization support enabled");
 	} else {
 		WARNING("intl not enabled; libraries and/or headers not found");

ext/intl/converter/converter.c

@@ -18,6 +18,10 @@
 #include "zend_exceptions.h"
 
 #include <unicode/utypes.h>
+#if U_ICU_VERSION_MAJOR_NUM >= 49
+#include <unicode/utf8.h>
+#include <unicode/utf16.h>
+#endif
 #include <unicode/ucnv.h>
 #include <unicode/ustring.h>
 

ext/intl/grapheme/grapheme_string.c

@@ -24,6 +24,9 @@
 #include "grapheme_util.h"
 
 #include <unicode/utypes.h>
+#if U_ICU_VERSION_MAJOR_NUM >= 49
+#include <unicode/utf8.h>
+#endif
 #include <unicode/ucol.h>
 #include <unicode/ustring.h>
 #include <unicode/ubrk.h>
@@ -835,10 +838,10 @@ PHP_FUNCTION(grapheme_extract)
 	pstr = str + start;
 
 	/* just in case pstr points in the middle of a character, move forward to the start of the next char */
-	if ( !UTF8_IS_SINGLE(*pstr) && !U8_IS_LEAD(*pstr) ) {
+	if ( !U8_IS_SINGLE(*pstr) && !U8_IS_LEAD(*pstr) ) {
 		char *str_end = str + str_len;
 
-		while ( !UTF8_IS_SINGLE(*pstr) && !U8_IS_LEAD(*pstr) ) {
+		while ( !U8_IS_SINGLE(*pstr) && !U8_IS_LEAD(*pstr) ) {
 			pstr++;
 			if ( pstr >= str_end ) {
 				intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,

ext/intl/normalizer/normalizer_normalize.c

@@ -24,6 +24,9 @@
 #include "normalizer_class.h"
 #include "normalizer_normalize.h"
 #include "intl_convert.h"
+#if U_ICU_VERSION_MAJOR_NUM >= 49
+#include <unicode/utf8.h>
+#endif
 
 /* {{{ proto string Normalizer::normalize( string $input [, string $form = FORM_C] )
  * Normalize a string. }}} */

ext/intl/uchar/uchar.c

@@ -3,6 +3,9 @@
 #include "intl_convert.h"
 
 #include <unicode/uchar.h>
+#if U_ICU_VERSION_MAJOR_NUM >= 49
+#include <unicode/utf8.h>
+#endif
 
 #define IC_METHOD(mname) PHP_METHOD(IntlChar, mname)