@@ -41,11 +41,11 @@ AC_CHECK_FUNCS(Tcl_GetEncodingNameFromEnvironment Tcl_SetSystemEncoding) LIBS="${SAVE_LIBS}" dnl Check for optional headers AC_HEADER_STDC -AC_CHECK_HEADERS(unistd.h) +AC_CHECK_HEADERS(unistd.h string.h strings.h) dnl Check for optional system calls AC_CHECK_FUNCS(readlink) dnl Check for acceptable dladdr so we can find ourselves on Solaris