-dnl Only allow AC_PROG_CXX if it's explicitly called (by PHP_REQUIRE_CXX) -dnl otherwise AC_PROG_LIBTOOL fails if there is no working C++ compiler -AC_PROVIDE_IFELSE([PHP_REQUIRE_CXX], [AC_PROG_CXX], [undefine([AC_PROG_CXX]) -AC_DEFUN([AC_PROG_CXX], [])]) +dnl Only allow AC_PROG_CXX and AC_PROG_CXXCPP if they are explicitly called (by PHP_REQUIRE_CXX). +dnl Otherwise AC_PROG_LIBTOOL fails if there is no working C++ compiler. +AC_PROVIDE_IFELSE([PHP_REQUIRE_CXX], [], [ + undefine([AC_PROG_CXX]) + AC_DEFUN([AC_PROG_CXX], []) + undefine([AC_PROG_CXXCPP]) + AC_DEFUN([AC_PROG_CXXCPP], []) +]) AC_PROG_LIBTOOL
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