Adds code to configure.ac to find and link in Caliper

configure.ac

@@ -72,6 +72,12 @@ AC_ARG_ENABLE([perfflow],
     [enable_perfflow=$enableval],
     [enable_perfflow=no]
 )
+AC_ARG_ENABLE(caliper,
+    [AS_HELP_STRING([--enable-caliper[=OPTS]],
+                    [Use caliper for profiling. [default=no] [OPTS=no/yes]])],
+     ,
+	[enable_caliper="no"]
+)
 # TODO Add support for libb64 back once base64 encoding/decoding is fully complete
 # AC_ARG_VAR([LIBB64_DIR], [root directory for libb64])
 
@@ -134,6 +140,13 @@ AX_PERFFLOW_ASPECT([PERFFLOW],
 if test "x$enable_perfflow" = "xyes" && test "x$pkg_check_perfflow_found" = "xno"; then
     AC_MSG_ERROR([requested PerfFlow Aspect support, but cannot find PerfFlow Aspect with pkg-config])
 fi
+if test "$enable_caliper" = "yes"; then
+    PKG_CHECK_MODULES([CALIPER], [caliper], [], [])
+    CFLAGS="${CFLAGS} ${CALIPER_CFLAGS} "
+    # Do not use CALIPER_LIBS, only link to libcaliper-stub
+    LIBS="${LIBS} ${CALIPER_LIBS} -lrt "
+    AC_DEFINE([HAVE_CALIPER], [1], [Define if you have libcaliper])
+fi
 AM_CONDITIONAL([PERFFLOW], [test "x$enable_perfflow" = "xyes"])
 
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