diff --git a/checkin_notes b/checkin_notes
index 2c72c70b3d..a909e016ba 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2993,6 +2993,7 @@ David  April 2 2008
         send <client_cap_plan_class/> if client understands
         app version plan class.
         The server checks for this instead of version > 6.11.
+        (suggested by Nicolas Alvarez)
     - clean up unix_util: .h files declare only (extern) interfaces;
         no reason for daemon() to be C
 
@@ -3004,3 +3005,13 @@ David  April 2 2008
         sched_plan.C
         sched_send.C
         server_types.C,h
+
+David  April 2 2008
+    - compile fixes for gcc 4.x; fixes #592
+
+    lib/
+        coproc.h
+    sched/
+        single_job_assimilator.C
+    tools/
+        backend_lib.h
diff --git a/lib/coproc.h b/lib/coproc.h
index a5d3769d80..828a279c18 100644
--- a/lib/coproc.h
+++ b/lib/coproc.h
@@ -21,6 +21,7 @@
 #define _COPROC_
 
 #include <vector>
+#include <cstring>
 
 #include "miofile.h"
 
diff --git a/sched/single_job_assimilator.C b/sched/single_job_assimilator.C
index 112d82a71b..85354233bd 100644
--- a/sched/single_job_assimilator.C
+++ b/sched/single_job_assimilator.C
@@ -25,6 +25,7 @@
 #include <vector>
 #include <string>
 #include <cstdlib>
+#include <cstring>
 
 #include "boinc_db.h"
 #include "error_numbers.h"
diff --git a/tools/backend_lib.h b/tools/backend_lib.h
index 2b7f333f78..0bea4fbc45 100644
--- a/tools/backend_lib.h
+++ b/tools/backend_lib.h
@@ -20,6 +20,8 @@
 #ifndef H_BACKEND_LIB
 #define H_BACKEND_LIB
 
+#include <limits.h>
+
 #include "crypt.h"
 #include "sched_config.h"
 #include "boinc_db.h"