remove unused dependency on linux/membarrier.h for intel to fix CI build

add dependency on linux-libc-dev to INSTALL.md for other architectures

Signed-off-by: Daniel A. Steffen <[email protected]>

Author: das

INSTALL.md

@@ -152,14 +152,7 @@ on Ubuntu; currently supported versions are 14.04, 15.10 and 16.04.
 
 1. The first thing to do is install required packages:
 
- 1a. Install build tools and clang compiler.
-    `sudo apt-get install autoconf libtool pkg-config clang`
-
- 1b. Install dtrace (to generate provider.h)
-    `sudo apt-get install systemtap-sdt-dev`
-
- 1c. Install additional libdispatch dependencies
-    `sudo apt-get install libblocksruntime-dev libbsd-dev`
+    `sudo apt-get install autoconf libtool pkg-config clang systemtap-sdt-dev libbsd-dev linux-libc-dev`
 
     Note: compiling libdispatch requires clang 3.8 or better and
 the gold linker. If the default clang on your Ubuntu version is

src/shims/lock.h

@@ -89,7 +89,9 @@ _dispatch_lock_has_failed_trylock(dispatch_lock lock_value)
 
 #elif defined(__linux__)
 #include <linux/futex.h>
+#if !defined(__x86_64__) && !defined(__i386__)
 #include <linux/membarrier.h>
+#endif
 #include <unistd.h>
 #include <sys/syscall.h>   /* For SYS_xxx definitions */