BTL/OPENIB: remove AC_RUN_IFELSE from configure and check AF_IB support by lib rdmacm during component_init.

This commit was SVN r31194.

ompi/mca/btl/openib/configure.m4

@@ -72,46 +72,35 @@ AC_DEFUN([MCA_ompi_btl_openib_CONFIG],[
                   "$have_threads" != "none"; then
               cpcs="$cpcs rdmacm"
               if test "$enable_openib_rdmacm_ibaddr" = "yes"; then
-                  LDFLAGS_save="$LDFLAGS"
-                  LIBS_save="$LIBS"
-                  LDFLAGS="$LDFLAGS $btl_openib_LDFLAGS"
-                  LIBS="$LIBS $btl_openib_LIBS"
-                  AC_LANG(C)
-                  AC_MSG_CHECKING([rsockets keepalive])
-                  AC_RUN_IFELSE(
-                    [AC_LANG_PROGRAM(
-                        [
-                          #include <stdio.h>
-                          #include <netinet/in.h>
-                          #include <netinet/tcp.h>
-                          #include <sys/types.h>
-                          #include <rdma/rsocket.h>
-                          #include <infiniband/ib.h>
-                        ],
-                        [
-                          int rsock;
-                          rsock = rsocket(AF_IB, SOCK_STREAM, 0);
-                          if (rsock < 0) {
-                              return -1;
-                          }
-                          rclose(rsock);
-                        ]
-                    )],
-                    [ AC_MSG_RESULT([yes])
-                      AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 1, rdmacm with rsockets support)
-                    ],
-                    [ AC_MSG_RESULT([no])
-                      AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 0, rdmacm without rsockets support)
-                      AC_MSG_WARN([rsockets does not support keepalives. librdmacm 1.0.18 or beyond is needed.])
-                    ],
-                    [
-                      AC_MSG_WARN([cross compiling detected - disable IB addressing support in RDMACM openib BTL.])
-                    ]
-                  )
-                  LDFLAGS="$LDFLAGS_save"
-                  LIBS="$LIBS_save"
+                  AC_MSG_CHECKING([IB addressing])
+                  AC_EGREP_CPP(
+                      yes,
+                      [
+                        #include <infiniband/ib.h>
+                        #ifdef AF_IB
+                          yes
+                        #endif
+                      ],
+                      [
+                        AC_CHECK_HEADERS(
+                            [rdma/rsocket.h],
+                            [
+                                AC_MSG_RESULT([yes])
+                                AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 1, rdmacm IB_AF addressing support)
+                            ],
+                            [
+                                AC_MSG_RESULT([no])
+                                AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 0, rdmacm without IB_AF addressing support)
+                                AC_MSG_WARN([There is no IB_AF addressing support by lib rdmacm.])
+                            ]
+                      )],
+                      [
+                       AC_MSG_RESULT([no])
+                       AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 0, rdmacm without IB_AF addressing support)
+                       AC_MSG_WARN([There is no IB_AF addressing support by lib rdmacm.])
+                      ])
               else
-                AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 0, rdmacm without rsockets support)
+                AC_DEFINE(BTL_OPENIB_RDMACM_IB_ADDR, 0, rdmacm without IB_AF addressing support)
               fi
           fi
           if test "x$btl_openib_have_udcm" = "x1" -a \

ompi/mca/btl/openib/connect/btl_openib_connect_rdmacm.c

@@ -59,6 +59,11 @@
 #include "btl_openib_ini.h"
 
 #if BTL_OPENIB_RDMACM_IB_ADDR
+#include <stdio.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <sys/types.h>
+#include <rdma/rsocket.h>
 #include <infiniband/ib.h>
 #endif
 
@@ -2269,6 +2274,21 @@ static int rdmacm_component_finalize(void)
     return OMPI_SUCCESS;
 }
 
+#if BTL_OPENIB_RDMACM_IB_ADDR
+static int rdmacm_check_ibaddr_support(void)
+{
+    int rsock;
+    rsock = rsocket(AF_IB, SOCK_STREAM, 0);
+    if (rsock < 0) {
+        return OMPI_ERROR;
+    }
+
+    rclose(rsock);
+
+    return OMPI_SUCCESS;
+}
+#endif
+
 static int rdmacm_component_init(void)
 {
     int rc;
@@ -2277,12 +2297,21 @@ static int rdmacm_component_init(void)
     OBJ_CONSTRUCT(&client_list, opal_list_t);
     OBJ_CONSTRUCT(&client_list_lock, opal_mutex_t);
 
+#if !BTL_OPENIB_RDMACM_IB_ADDR
     rc = mca_btl_openib_build_rdma_addr_list();
     if (OMPI_SUCCESS != rc) {
         opal_output_verbose(5, ompi_btl_base_framework.framework_output,
                             "openib BTL: rdmacm CPC unable to find any valid IP address");
         return OMPI_ERR_NOT_SUPPORTED;
     }
+#else
+    rc = rdmacm_check_ibaddr_support();
+    if (OMPI_SUCCESS != rc) {
+        opal_output_verbose(5, ompi_btl_base_framework.framework_output,
+                            "There is no IB_AF addressing support by lib rdmacm");
+        return OMPI_ERR_NOT_SUPPORTED;
+    }
+#endif
 
     event_channel = rdma_create_event_channel();
     if (NULL == event_channel) {