=> merged https://github.com/open-mpi/ompi/pull/3755 sort ; backport in 3756
=> merged https://github.com/open-mpi/ompi/pull/5653 user+host
https://github.com/open-mpi/ompi/issues/3759


Index: openmpi-2.1.1/autogen.pl
===================================================================
--- openmpi-2.1.1.orig/autogen.pl
+++ openmpi-2.1.1/autogen.pl
@@ -85,7 +85,7 @@ if ($^O eq "solaris") {
 }
 
 $username = getpwuid($>);
-$full_hostname = `hostname`;
+$full_hostname = $ENV{HOSTNAME} || `hostname`;
 chomp($full_hostname);
 $hostname = $full_hostname;
 $hostname =~ s/^([\w\-]+)\..+/\1/;
@@ -316,7 +316,7 @@ sub mca_process_framework {
             $mca_found->{$pname}->{$framework}->{found} = 1;
             opendir(DIR, $dir) ||
                 my_die "Can't open $dir directory";
-            foreach my $d (readdir(DIR)) {
+            foreach my $d (sort(readdir(DIR))) {
                 # Skip any non-directory, "base", or any dir that
                 # begins with "."
                 next
@@ -628,7 +628,7 @@ sub mpiext_run_global {
     my $dir = "$topdir/$ext_prefix";
     opendir(DIR, $dir) ||
         my_die "Can't open $dir directory";
-    foreach my $d (readdir(DIR)) {
+    foreach my $d (sort(readdir(DIR))) {
         # Skip any non-directory, "base", or any dir that begins with "."
         next
             if (! -d "$dir/$d" || $d eq "base" || substr($d, 0, 1) eq ".");
@@ -715,7 +715,7 @@ sub mpicontrib_run_global {
     my $dir = "$topdir/$contrib_prefix";
     opendir(DIR, $dir) ||
         my_die "Can't open $dir directory";
-    foreach my $d (readdir(DIR)) {
+    foreach my $d (sort(readdir(DIR))) {
         # Skip any non-directory, "base", or any dir that begins with "."
         next
             if (! -d "$dir/$d" || $d eq "base" || substr($d, 0, 1) eq ".");
@@ -1144,9 +1144,6 @@ if (-e "orcm") {
 
 #---------------------------------------------------------------------------
 
-$full_hostname = `hostname`;
-chomp($full_hostname);
-
 $m4 = "dnl
 dnl \$HEADER\$
 dnl
Index: openmpi-2.1.1/config/opal_functions.m4
===================================================================
--- openmpi-2.1.1.orig/config/opal_functions.m4
+++ openmpi-2.1.1/config/opal_functions.m4
@@ -95,8 +95,8 @@ EOF
 #
 
 OPAL_CONFIGURE_USER="`whoami`"
-OPAL_CONFIGURE_HOST="`hostname | head -n 1`"
-OPAL_CONFIGURE_DATE="`date`"
+OPAL_CONFIGURE_HOST="${HOSTNAME:-`hostname | head -n 1`}"
+OPAL_CONFIGURE_DATE="reproducibledate"
 
 #
 # Save these details so that they can be used in opal_info later
@@ -115,8 +115,8 @@ AC_DEFUN([OPAL_BASIC_SETUP],[
 #
 
 OPAL_CONFIGURE_USER="`whoami`"
-OPAL_CONFIGURE_HOST="`hostname | head -n 1`"
-OPAL_CONFIGURE_DATE="`date`"
+OPAL_CONFIGURE_HOST="${HOSTNAME:-`hostname | head -n 1`}"
+OPAL_CONFIGURE_DATE="reproducibledate"
 
 #
 # Make automake clean emacs ~ files for "make clean"
Index: openmpi-2.1.1/config/opal_get_version.m4
===================================================================
--- openmpi-2.1.1.orig/config/opal_get_version.m4
+++ openmpi-2.1.1/config/opal_get_version.m4
@@ -91,7 +91,7 @@ m4_define([OPAL_GET_VERSION],[
                     $2_REPO_REV=`git describe --tags --always`
                 fi
             else
-                $2_REPO_REV="date`date '+%Y-%m-%d'`"
+                $2_REPO_REV="date"
             fi
         fi
 
Index: openmpi-2.1.1/ompi/tools/ompi_info/Makefile.am
===================================================================
--- openmpi-2.1.1.orig/ompi/tools/ompi_info/Makefile.am
+++ openmpi-2.1.1/ompi/tools/ompi_info/Makefile.am
@@ -26,8 +26,8 @@ AM_CFLAGS = \
             -DOPAL_CONFIGURE_HOST="\"@OPAL_CONFIGURE_HOST@\"" \
             -DOPAL_CONFIGURE_DATE="\"@OPAL_CONFIGURE_DATE@\"" \
             -DOMPI_BUILD_USER="\"$$USER\"" \
-            -DOMPI_BUILD_HOST="\"`hostname`\"" \
-            -DOMPI_BUILD_DATE="\"`date`\"" \
+            -DOMPI_BUILD_HOST="\"$${HOSTNAME:-`hostname`}\"" \
+            -DOMPI_BUILD_DATE="\"reproducibledate\"" \
             -DOMPI_BUILD_CFLAGS="\"@CFLAGS@\"" \
             -DOMPI_BUILD_CPPFLAGS="\"@CPPFLAGS@\"" \
             -DOMPI_BUILD_CXXFLAGS="\"@CXXFLAGS@\"" \
Index: openmpi-2.1.1/orte/tools/orte-info/Makefile.am
===================================================================
--- openmpi-2.1.1.orig/orte/tools/orte-info/Makefile.am
+++ openmpi-2.1.1/orte/tools/orte-info/Makefile.am
@@ -23,8 +23,8 @@ AM_CFLAGS = \
             -DOPAL_CONFIGURE_HOST="\"@OPAL_CONFIGURE_HOST@\"" \
             -DOPAL_CONFIGURE_DATE="\"@OPAL_CONFIGURE_DATE@\"" \
             -DOMPI_BUILD_USER="\"$$USER\"" \
-            -DOMPI_BUILD_HOST="\"`hostname`\"" \
-            -DOMPI_BUILD_DATE="\"`date`\"" \
+            -DOMPI_BUILD_HOST="\"$${HOSTNAME:-`hostname`}\"" \
+            -DOMPI_BUILD_DATE="\"reproducibledate\"" \
             -DOMPI_BUILD_CFLAGS="\"@CFLAGS@\"" \
             -DOMPI_BUILD_CPPFLAGS="\"@CPPFLAGS@\"" \
             -DOMPI_BUILD_CXXFLAGS="\"@CXXFLAGS@\"" \
Index: openmpi-2.1.1/oshmem/tools/oshmem_info/Makefile.am
===================================================================
--- openmpi-2.1.1.orig/oshmem/tools/oshmem_info/Makefile.am
+++ openmpi-2.1.1/oshmem/tools/oshmem_info/Makefile.am
@@ -15,8 +15,8 @@ AM_CPPFLAGS = \
             -DOPAL_CONFIGURE_HOST="\"@OPAL_CONFIGURE_HOST@\"" \
             -DOPAL_CONFIGURE_DATE="\"@OPAL_CONFIGURE_DATE@\"" \
             -DOMPI_BUILD_USER="\"$$USER\"" \
-            -DOMPI_BUILD_HOST="\"`hostname`\"" \
-            -DOMPI_BUILD_DATE="\"`date`\"" \
+            -DOMPI_BUILD_HOST="\"$${HOSTNAME:-`hostname`}\"" \
+            -DOMPI_BUILD_DATE="\"reproducibledate\"" \
             -DOMPI_BUILD_CFLAGS="\"@CFLAGS@\"" \
             -DOMPI_BUILD_CPPFLAGS="\"@CPPFLAGS@\"" \
             -DOMPI_BUILD_CXXFLAGS="\"@CXXFLAGS@\"" \