Makefile: Updates to eliminates warnings, add test for boost system lib.

Makefile.am

@@ -1,4 +1,5 @@
 AUTOMAKE_OPTIONS = gnu
+ACLOCAL_AMFLAGS = -I m4
 EXTRA_DIST = autogen.sh ceph.spec.in ceph.spec
 # the "." here makes sure check-local builds gtest before it is used
 SUBDIRS = . src man

configure.ac

@@ -9,6 +9,7 @@ AC_PREREQ(2.59)
 # VERSION define is not used by the code.  It gets a version string
 # from 'git describe'; see src/ceph_ver.[ch]
 AC_INIT([ceph], [0.52], [[email protected]])
+AC_CONFIG_MACRO_DIR([m4])
 
 AC_CONFIG_SUBDIRS([src/gtest])
 AC_CONFIG_SUBDIRS([src/leveldb])
@@ -360,6 +361,9 @@ AC_CHECK_HEADER([boost/random/discrete_distribution.hpp],
 AC_CHECK_HEADER([boost/statechart/state.hpp], [],
     AC_MSG_FAILURE(["Can't find boost statechart headers; need 1.34 or later"]))
 
+AC_CHECK_LIB(boost_system-mt, main, [],
+    AC_MSG_ERROR(["Boost system library not found."]))
+
 AC_LANG([C])
 
 AC_CHECK_MEMBER([struct fiemap_extent.fe_logical],

src/gtest/Makefile.am

@@ -1,5 +1,6 @@
 # Automake file
 
+ACLOCAL_AMFLAGS = -I m4
 AM_LDFLAGS = -lpthread
 
 # Nonstandard package files for distribution

src/gtest/configure.ac

@@ -11,6 +11,7 @@ AC_INIT([Google C++ Testing Framework],
 
 # Provide various options to initialize the Autoconf and configure processes.
 AC_PREREQ([2.59])
+AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_SRCDIR([./COPYING])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([build-aux/config.h])