diff --git a/CMakeLists.txt b/CMakeLists.txt
index 631feb3..a77025c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ if( CMAKE_SIZEOF_VOID_P EQUAL 8 )
   #64 bits
   MESSAGE( STATUS "64 bits" )
   set(CMAKE_C_FLAGS_DEBUG "-ggdb -DLINUX -Dlinux -m64 -march=core2 -fPIC -D_REENTRANT -pthread")
-  set(CMAKE_C_FLAGS_RELEASE "-DLINUX -D_POSIX_SOURCE -Dlinux -m64 -march=core2 -fPIC -D_REENTRANT -pthread")
+  set(CMAKE_C_FLAGS_RELEASE "-DLINUX -Dlinux -m64 -march=core2 -fPIC -D_REENTRANT -pthread")
   set(CMAKE_CXX_FLAGS_DEBUG "-std=c++0x -fPIC -Wall -Wextra -ggdb -DLINUX -Dlinux -D_REENTRANT -malign-double -pthread")
   set(CMAKE_CXX_FLAGS_RELEASE "-std=c++0x -Wall -Wextra -fPIC -DLINUX -Dlinux -D_REENTRANT -malign-double -pthread -O3 -DNDEBUG")
   set(USRLIB_DIR "/usr/lib64/:/usr/local/lib64/")
@@ -32,7 +32,7 @@ if (EXISTS "/usr/include/tirpc")
   include_directories("/usr/include/tirpc")
 endif()
 
-if (EXISTS "/usr/lib64/libtirpc.so")
+if (EXISTS "/usr/lib/x86_64-linux-gnu/libtirpc.so")
    set (TIRPC "tirpc")
 else()
    set (TIRPC "")
diff --git a/src/DDClientLibC/INCLUDE/DD.h b/src/DDClientLibC/INCLUDE/DD.h
index 646ce63..a60b9cf 100755
--- a/src/DDClientLibC/INCLUDE/DD.h
+++ b/src/DDClientLibC/INCLUDE/DD.h
@@ -141,3 +141,5 @@ extern int DD_AddDataSet(char *DataSetName, char *RemSetID, char *BaseName);
 #define DD_FLOAT   2
 #define DD_DOUBLE 3
 #define DD_CHAR   0
+
+int GetSocket();
diff --git a/src/DDClientLibCpp/DD_client.cc b/src/DDClientLibCpp/DD_client.cc
index dbe2f94..e6ce837 100644
--- a/src/DDClientLibCpp/DD_client.cc
+++ b/src/DDClientLibCpp/DD_client.cc
@@ -203,8 +203,16 @@ int DD_Client::GetSocket()
       exit(1);
    }
 
-   fgets(RemSerName, PATHLENGTH-1, resfile);
-   fgets(line, PATHLENGTH-1, resfile);
+   char *r = fgets(RemSerName, PATHLENGTH-1, resfile);
+   if (r == NULL) {
+      fprintf(stderr,"Cannot load server name in resource file\n");
+      exit(1);
+   }
+   r = fgets(line, PATHLENGTH-1, resfile);
+   if (r == NULL) {
+      fprintf(stderr,"Cannot load port in resource file\n");
+      exit(1);
+   }
    fclose(resfile);
 
    RemSerName[strlen(RemSerName)-1] = '\0';
diff --git a/src/TOOLS/COMMON/DD_Access_cl.c b/src/TOOLS/COMMON/DD_Access_cl.c
index 516b09a..53256ec 100755
--- a/src/TOOLS/COMMON/DD_Access_cl.c
+++ b/src/TOOLS/COMMON/DD_Access_cl.c
@@ -26,7 +26,7 @@ extern int  SocketID; /* The socket is defined in DD_client.c */
 /*================= FUNCTIONS ================================*/
 
 /*------------------------ LoginRequest -------------------------------*/
-LoginRequest(char *UserPasswd, char *DDUserName, char *Host)
+int LoginRequest(char *UserPasswd, char *DDUserName, char *Host)
 {
    static caddr_t buf = NULL;
    static XDR xdrs;
diff --git a/src/TOOLS/DDCheckUser/DD_Check.c b/src/TOOLS/DDCheckUser/DD_Check.c
index e25f7c4..504bb33 100755
--- a/src/TOOLS/DDCheckUser/DD_Check.c
+++ b/src/TOOLS/DDCheckUser/DD_Check.c
@@ -12,9 +12,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
+
 #include <DD_Access.h>
 
-main (int argc, char *argv[])
+int main (int argc, char *argv[])
 /*
  * LocalID - the Unix ID if user, invoking this program
  * LogName - the DD login name for specific user
diff --git a/src/TOOLS/DDHtmlLogin/DD_htmllogin.c b/src/TOOLS/DDHtmlLogin/DD_htmllogin.c
index d534af5..654bb1d 100755
--- a/src/TOOLS/DDHtmlLogin/DD_htmllogin.c
+++ b/src/TOOLS/DDHtmlLogin/DD_htmllogin.c
@@ -25,7 +25,7 @@
 /*=========== Global Variables ===============================*/
 
    
-main (int argc, char *argv[])
+int main (int argc, char *argv[])
 {
    int  length;
    char HostName[MAXHOSTLENGTH];
--
libgit2 0.21.2