diff --git a/uwsgi.c b/uwsgi.c
index a78da14b..3ae536f9 100644
--- a/uwsgi.c
+++ b/uwsgi.c
@@ -666,7 +666,7 @@ options_parsed:
 	uwsgi.ns = "/ns/001";
 	if (uwsgi.ns) {
 		void *linux_clone_stack = alloca(uwsgi.page_size);
-		pid_t pid = clone(uwsgi_start, linux_clone_stack+uwsgi.page_size, SIGCHLD|CLONE_NEWUTS|CLONE_NEWPID|CLONE_NEWIPC, (void *)argv);
+		pid_t pid = clone(uwsgi_start, linux_clone_stack+uwsgi.page_size, SIGCHLD|CLONE_NEWUTS|CLONE_NEWPID|CLONE_NEWIPC|CLONE_NEWNS, (void *)argv);
 		if (pid == -1) {
 			uwsgi_error("clone()");
 			exit(1);
@@ -709,6 +709,43 @@ int uwsgi_start(void *v_argv) {
 
 	uwsgi_log("my PID is %d\n", (int) getpid());
 
+	if (getpid() == 1) {
+		uwsgi_log("unmounting /proc\n");
+		if (umount("/proc/bus/usb")) {
+			uwsgi_error("umount()");
+		}
+		if (umount("/proc/sys/fs/binfmt_misc")) {
+			uwsgi_error("umount()");
+		}
+		if (umount("/proc")) {
+			uwsgi_error("umount()");
+		}
+		umount("/dev/pts");
+		umount("/dev/shm");
+		umount("/dev");
+		umount("/dev");
+		umount("/sys/fs/fuse/connections");
+		umount("/sys");
+		umount("/boot");
+		umount("/selinux");
+		umount("/home/roberto/.gvfs");
+		umount("/sys");
+		umount("/");
+		if (mount("/ns/001", "/ns/001_", "none", MS_BIND| MS_REC, NULL)) {
+			uwsgi_error("mount()");
+		}
+		if (chdir("/ns/001_")) {
+			uwsgi_error("chdir()");
+		}
+		if (pivot_root(".", "/ns/001_/mnt2")) {
+			uwsgi_error("pivot_root()");
+		}
+		
+		if (mount("proc","/proc", "proc", 0, NULL)) {
+			uwsgi_error("mount()");
+		}
+	}
+
 	uwsgi_as_root();
 
 	if (!uwsgi.no_initial_output) {
diff --git a/uwsgi.h b/uwsgi.h
index 9d696dc0..2ed604ea 100644
--- a/uwsgi.h
+++ b/uwsgi.h
@@ -84,6 +84,8 @@
 #ifdef __linux
 #include <sys/prctl.h>
 #include <linux/limits.h>
+#include <sys/mount.h>
+extern int pivot_root(const char * new_root, const char * put_old);
 #else
 #include <limits.h>
 #endif
diff --git a/uwsgiconfig.py b/uwsgiconfig.py
index fdeebb48..7bada955 100644
--- a/uwsgiconfig.py
+++ b/uwsgiconfig.py
@@ -141,7 +141,11 @@ class uConf(object):
         self.config.read(filename)
         self.gcc_list = ['utils', 'protocol', 'socket', 'logging', 'master', 'plugins', 'lock', 'cache', 'event', 'signal', 'loop', 'uwsgi']
         self.cflags = ['-O2', '-Wall', '-Werror', '-D_LARGEFILE_SOURCE', '-D_FILE_OFFSET_BITS=64'] + os.environ.get("CFLAGS", "").split()
-        gcc_version = str(spcall2("%s -v" % GCC)).split('\n')[-1].split()[2]
+	try:
+            gcc_version = str(spcall2("%s -v" % GCC)).split('\n')[-1].split()[2]
+	except:
+	    print("*** you need a c compiler to build uWSGI ***")
+	    sys.exit(1)
         gcc_major = int(gcc_version.split('.')[0])
         gcc_minor = int(gcc_version.split('.')[1])
         if (sys.version_info[0] == 2) or (gcc_major < 4) or (gcc_major == 4 and gcc_minor < 3):