diff -ur php7-source.orig/build/php.m4 php7-source/build/php.m4
--- php7-source.orig/build/php.m4	2020-06-09 13:57:09.000000000 +0300
+++ php7-source/build/php.m4	2020-07-10 09:50:17.753222636 +0300
@@ -754,14 +754,7 @@
 dnl
 dnl PHP_REQUIRE_CXX
 dnl
-AC_DEFUN([PHP_REQUIRE_CXX],[
-  if test -z "$php_cxx_done"; then
-    AC_PROG_CXX
-    AC_PROG_CXXCPP
-    PHP_ADD_LIBRARY(stdc++)
-    php_cxx_done=yes
-  fi
-])
+AC_DEFUN([PHP_REQUIRE_CXX])
 
 dnl
 dnl PHP_BUILD_SHARED
Только в php7-source/build: php.m4~