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dnl AC_SINGLE_CXX_CHECK(CACHEVAR, FUNCTION, HEADER, PROGRAM) dnl $1, $2, $3, $4, dnl AC_DEFUN([AC_SINGLE_CXX_CHECK], [AC_CACHE_CHECK([for $2 in $3], [$1], [AC_LANG_PUSH([C++]) AC_COMPILE_IFELSE(AC_LANG_PROGRAM([#include $3],[$4]),[$1=yes],[$1=no]) AC_LANG_POP([C++])]) ])