diff --git a/deps/libeio/wscript b/deps/libeio/wscript
index 07afd24dea..90be7cce49 100644
--- a/deps/libeio/wscript
+++ b/deps/libeio/wscript
@@ -104,8 +104,6 @@ def configure(conf):
     }
   """, define_name="HAVE_SYNC_FILE_RANGE")
 
-  conf.write_config_header('config.h')
-
 def build(bld):
   libeio = bld.new_task_gen("cc", "staticlib")
   libeio.source = "eio.c"
diff --git a/deps/libev/wscript b/deps/libev/wscript
index d3bbbd6d05..27b1f01f2a 100644
--- a/deps/libev/wscript
+++ b/deps/libev/wscript
@@ -26,20 +26,23 @@ def configure(conf):
   code = """
       #include <syscall.h>
       #include <time.h>
+      #include <stdio.h>
 
       int main() {
           struct timespec ts; 
-          int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts);
+          int status = syscall(SYS_clock_gettime, CLOCK_REALTIME, &ts);
+          puts("1"); // fucking waf...
           return 0;
       }
   """
-  conf.check_cc(fragment=code, define_name="HAVE_CLOCK_SYSCALL")
+  conf.check_cc(fragment=code, define_name="HAVE_CLOCK_SYSCALL", execute=True,
+                msg="Checking for SYS_clock_gettime")
+
   conf.check_cc(lib="rt", header_name="time.h", function_name="clock_gettime")
   conf.check_cc(lib="rt", header_name="time.h", function_name="nanosleep")
   conf.check_cc(lib="m", header_name="math.h", function_name="ceil")
 
   conf.define("HAVE_CONFIG_H", 1)
-  conf.write_config_header('config.h')
 
   conf.env.append_value('CCFLAGS', ['-DEV_MULTIPLICITY=0'])
   conf.env.append_value('CXXFLAGS', ['-DEV_MULTIPLICITY=0'])
diff --git a/tools/waf b/tools/waf
index 383775cc27..2bf38ea0ac 100755
Binary files a/tools/waf and b/tools/waf differ