CPPFLAGS="$save_CPPFLAGS"
-STEPMAKE_MAKEINFO(REQUIRED, 4.8)
+STEPMAKE_MAKEINFO(REQUIRED, 4.11)
STEPMAKE_PYTHON_DEVEL(REQUIRED)
STEPMAKE_PATH_PROG(GHOSTSCRIPT, gs, OPTIONAL, 8.15)
AC_CHECK_HEADERS([assert.h grp.h libio.h pwd.h sys/stat.h wchar.h])
AC_LANG_PUSH(C++)
-AC_CHECK_HEADERS([sstream])
+AC_CHECK_HEADERS([sstream boost/lambda/lambda.hpp])
AC_LANG_POP(C++)
AC_HEADER_STAT
AC_FUNC_MEMCMP