Put in a check for RLIMIT_PROC before trying to use it.

This commit was SVN r14502.

configure.ac

@@ -917,6 +917,16 @@ OMPI_CASE_SENSITIVE_FS_SETUP
 # AIX: FIONBIO in sys/ioctl.h
 # glibc: memcpy
 
+#
+# Do we have RLIMIT_NPROC in <sys/resources.h>? (e.g., Solaris does not)
+#
+
+AC_CHECK_DECLS([RLIMIT_NPROC], [], [], [
+AC_INCLUDES_DEFAULT
+#if HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif]) 
+
 # checkpoint results
 AC_CACHE_SAVE
 

opal/util/sys_limits.c

@@ -75,7 +75,8 @@ int opal_util_init_sys_limits(void)
         }
         opal_sys_limits.num_files = rlim.rlim_cur;
     }
-    
+
+#if HAVE_RLIMIT_NPROC    
     /* get/set the system limits on number of child procs we can have open */
     if (getrlimit (RLIMIT_NPROC, &rlim) < 0) {
         opal_output(0, "getrlimit (RLIMIT_NPROC) failed: %s\n", strerror(errno));
@@ -88,6 +89,7 @@ int opal_util_init_sys_limits(void)
         }
         opal_sys_limits.num_procs = rlim.rlim_cur;
     }
+#endif
     
     /* get/set the system limits on max file size we can create */
     if (getrlimit (RLIMIT_FSIZE, &rlim) < 0) {