gdb

	* README: Mention parallel check.
gdb/testsuite
	* dg-extract-results.sh: New file.
	* Makefile.in (FORCE_PARALLEL): New variable.
	(CHECK_TARGET): New conditional variable.
	(check): Use CHECK_TARGET.
	(DO_RUNTEST): New variable.
	(check-single): New target.
	(TEST_DIRS): New variable.
	(TEST_TARGETS): Likewise.
	(check-parallel): New target.
	(check-gdb.%): New pattern.
	(BASE1_FILES): New variable.
	(BASE2_FILES): Likewise.
	(check-gdb.base%): New pattern.
	(%/.dir): New pattern.
	* configure: Rebuild.
	* aclocal.m4 (AM_CONDITIONAL): New defun.
	* configure.ac: Check whether user is using GNU make.
	(GMAKE): New conditional.

8 files changed, 660 insertions, 4 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 96c9a95..a9b4874 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-29  Tom Tromey  <tromey@redhat.com>
+
+	* README: Mention parallel check.
+
 2009-06-29  Sami Wagiaalla  <swagiaal@redhat.com>
 
 	* dwarf2read.c (read_import_statement): Properly set import location
diff --git a/gdb/README b/gdb/README
index 7116227..57f600a 100644
--- a/gdb/README
+++ b/gdb/README
@@ -642,6 +642,20 @@ or
 	make site.exp	(builds the site specific file)
 	runtest -tool gdb GDB=../gdb    (or GDB=<somepath> as appropriate)
 
+When using a `make'-based method, you can use the Makefile variable
+`RUNTESTFLAGS' to pass flags to `runtest', e.g.:
+
+	make RUNTESTFLAGS=--directory=gdb.cp check
+
+If you use GNU make, you can use its `-j' option to run the testsuite
+in parallel.  This can greatly reduce the amount of time it takes for
+the testsuite to run.  In this case, if you set `RUNTESTFLAGS' then,
+by default, the tests will be run serially even under `-j'.  You can
+override this and force a parallel run by setting the `make' variable
+`FORCE_PARALLEL' to any non-empty value.  Note that the parallel `make
+check' assumes that you want to run the entire testsuite, so it is not
+compatible with some dejagnu options, like `--directory'.
+
 The last method gives you slightly more control in case of problems
 with building one or more test executables or if you are using the
 testsuite `standalone', without it being part of the GDB source tree.
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 12b5b44..cbbce9f 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,24 @@
+2009-06-29  Tom Tromey  <tromey@redhat.com>
+
+	* dg-extract-results.sh: New file.
+	* Makefile.in (FORCE_PARALLEL): New variable.
+	(CHECK_TARGET): New conditional variable.
+	(check): Use CHECK_TARGET.
+	(DO_RUNTEST): New variable.
+	(check-single): New target.
+	(TEST_DIRS): New variable.
+	(TEST_TARGETS): Likewise.
+	(check-parallel): New target.
+	(check-gdb.%): New pattern.
+	(BASE1_FILES): New variable.
+	(BASE2_FILES): Likewise.
+	(check-gdb.base%): New pattern.
+	(%/.dir): New pattern.
+	* configure: Rebuild.
+	* aclocal.m4 (AM_CONDITIONAL): New defun.
+	* configure.ac: Check whether user is using GNU make.
+	(GMAKE): New conditional.
+
 2009-06-29  Sami Wagiaalla  <swagiaal@redhat.com>
 
 	* gdb.cp/namespace-nested-import.cc: New test.
diff --git a/gdb/testsuite/Makefile.in b/gdb/testsuite/Makefile.in
index 92f1a67..5344418 100644
--- a/gdb/testsuite/Makefile.in
+++ b/gdb/testsuite/Makefile.in
@@ -48,6 +48,8 @@ RUNTEST = $(RUNTEST_FOR_TARGET)
 
 RUNTESTFLAGS =
 
+FORCE_PARALLEL =
+
 RUNTEST_FOR_TARGET = `\
   if [ -f $${srcdir}/../../dejagnu/runtest ]; then \
     echo $${srcdir}/../../dejagnu/runtest; \
@@ -122,7 +124,18 @@ site.exp: ./config.status Makefile
 
 installcheck:
 
-check: all site.exp
+# For GNU make, try to run the tests in parallel.  If RUNTESTFLAGS is
+# not empty, then by default the tests will be serialized.  This can
+# be overridden by setting FORCE_PARALLEL to any non-empty value.
+# For a non-GNU make, do not parallelize.
+@GMAKE_TRUE@CHECK_TARGET = $(if $(FORCE_PARALLEL),check-parallel,$(if $(RUNTESTFLAGS),check-single,check-parallel))
+@GMAKE_FALSE@CHECK_TARGET = check-single
+
+check: $(CHECK_TARGET)
+
+# All the hair to invoke dejagnu.  A given invocation can just append
+# $(RUNTESTFLAGS)
+DO_RUNTEST = \
 	rootme=`pwd`; export rootme; \
 	srcdir=${srcdir} ; export srcdir ; \
 	EXPECT=${EXPECT} ; export EXPECT ; \
@@ -132,7 +145,46 @@ check: all site.exp
 	if [ -f $${rootme}/../../expect/expect ] ; then  \
 	  TCL_LIBRARY=$${srcdir}/../../tcl/library ; \
 	  export TCL_LIBRARY ; fi ; \
-	$(RUNTEST) $(RUNTESTFLAGS) 
+	$(RUNTEST)
+
+check-single: all site.exp
+	$(DO_RUNTEST) $(RUNTESTFLAGS)
+
+# A list of all directories named "gdb.*" which also hold a .exp file.
+# We filter out gdb.base and add fake entries, because that directory
+# takes the longest to process, and so we split it in half.
+TEST_DIRS = gdb.base1 gdb.base2 $(filter-out gdb.base,$(sort $(notdir $(patsubst %/,%,$(dir $(wildcard $(srcdir)/gdb.*/*.exp))))))
+
+TEST_TARGETS = $(addprefix check-,$(TEST_DIRS))
+
+# We explicitly re-invoke make here for two reasons.  First, it lets
+# us add a -k option, which makes the parallel check mimic the
+# behavior of the serial check; and second, it means that we can still
+# regenerate the sum and log files even if a sub-make fails -- which
+# it usually does because dejagnu exits with an error if any test
+# fails.
+check-parallel:
+	$(MAKE) -k $(TEST_TARGETS); \
+	$(SHELL) $(srcdir)/dg-extract-results.sh \
+	  $(addsuffix /gdb.sum,$(TEST_DIRS)) > gdb.sum; \
+	$(SHELL) $(srcdir)/dg-extract-results.sh -L \
+	  $(addsuffix /gdb.log,$(TEST_DIRS)) > gdb.log
+
+$(filter-out check-gdb.base%,$(TEST_TARGETS)): check-gdb.%: all site.exp gdb.%/.dir
+	$(DO_RUNTEST) --directory=gdb.$* --outdir=gdb.$* $(RUNTESTFLAGS)
+
+# Each half (roughly) of the .exp files from gdb.base.
+BASE1_FILES = $(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/gdb.base/[a-m]*.exp))
+BASE2_FILES = $(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/gdb.base/[n-z]*.exp))
+
+# Handle each half of gdb.base.
+check-gdb.base%: all site.exp gdb.base%/.dir
+	@if test ! -d gdb.base$*; then mkdir gdb.base$*; fi
+	$(DO_RUNTEST) $(BASE$*_FILES) --outdir gdb.base$* $(RUNTESTFLAGS)
+
+%/.dir:
+	@-if test ! -d $*; then mkdir $*; fi
+	@echo > $@
 
 subdir_do: force
 	@for i in $(DODIRS); do \
diff --git a/gdb/testsuite/aclocal.m4 b/gdb/testsuite/aclocal.m4
index f58abae..2934db2 100644
--- a/gdb/testsuite/aclocal.m4
+++ b/gdb/testsuite/aclocal.m4
@@ -1,2 +1,35 @@
 sinclude(../../config/acx.m4)
 sinclude(../../config/override.m4)
+
+# AM_CONDITIONAL                                            -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 7
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
+	[$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+AC_SUBST([$1_TRUE])
+AC_SUBST([$1_FALSE])
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+  AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
diff --git a/gdb/testsuite/configure b/gdb/testsuite/configure
index 3973a2a..5b57101 100755
--- a/gdb/testsuite/configure
+++ b/gdb/testsuite/configure
@@ -312,7 +312,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os target_noncanonical subdirs RPATH_ENVVAR CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os target_noncanonical MAKE GMAKE_TRUE GMAKE_FALSE SET_MAKE subdirs RPATH_ENVVAR CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 ac_pwd=`pwd`
 
@@ -1445,6 +1445,93 @@ esac
 
 
 
+# Check for the 'make' the user wants to use.
+for ac_prog in make
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_MAKE+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$MAKE"; then
+  ac_cv_prog_MAKE="$MAKE" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_MAKE="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+MAKE=$ac_cv_prog_MAKE
+if test -n "$MAKE"; then
+  echo "$as_me:$LINENO: result: $MAKE" >&5
+echo "${ECHO_T}$MAKE" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$MAKE" && break
+done
+
+MAKE_IS_GNU=
+case "`$MAKE --version 2>&1 | sed 1q`" in
+  *GNU*)
+    MAKE_IS_GNU=yes
+    ;;
+esac
+
+
+if test "$MAKE_IS_GNU" = yes; then
+  GMAKE_TRUE=
+  GMAKE_FALSE='#'
+else
+  GMAKE_TRUE='#'
+  GMAKE_FALSE=
+fi
+
+echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6
+set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y,:./+-,___p_,'`
+if eval "test \"\${ac_cv_prog_make_${ac_make}_set+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.make <<\_ACEOF
+all:
+	@echo 'ac_maketemp="$(MAKE)"'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+eval `${MAKE-make} -f conftest.make 2>/dev/null | grep temp=`
+if test -n "$ac_maketemp"; then
+  eval ac_cv_prog_make_${ac_make}_set=yes
+else
+  eval ac_cv_prog_make_${ac_make}_set=no
+fi
+rm -f conftest.make
+fi
+if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then
+  echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+  SET_MAKE=
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+
 # Add HP-specific tests when appropriate.
 case $target in
   hppa*-*-hpux*)
@@ -3254,6 +3341,13 @@ LIBOBJS=$ac_libobjs
 LTLIBOBJS=$ac_ltlibobjs
 
 
+if test -z "${GMAKE_TRUE}" && test -z "${GMAKE_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"GMAKE\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"GMAKE\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 
 : ${CONFIG_STATUS=./config.status}
 ac_clean_files_save=$ac_clean_files
@@ -3799,6 +3893,10 @@ s,@target_cpu@,$target_cpu,;t t
 s,@target_vendor@,$target_vendor,;t t
 s,@target_os@,$target_os,;t t
 s,@target_noncanonical@,$target_noncanonical,;t t
+s,@MAKE@,$MAKE,;t t
+s,@GMAKE_TRUE@,$GMAKE_TRUE,;t t
+s,@GMAKE_FALSE@,$GMAKE_FALSE,;t t
+s,@SET_MAKE@,$SET_MAKE,;t t
 s,@subdirs@,$subdirs,;t t
 s,@RPATH_ENVVAR@,$RPATH_ENVVAR,;t t
 s,@CC@,$CC,;t t
diff --git a/gdb/testsuite/configure.ac b/gdb/testsuite/configure.ac
index bb98e6f..80d89aa 100644
--- a/gdb/testsuite/configure.ac
+++ b/gdb/testsuite/configure.ac
@@ -1,7 +1,7 @@
 #                                                       -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-# Copyright 2002, 2003, 2004, 2005
+# Copyright 2002, 2003, 2004, 2005, 2009
 # Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -26,6 +26,17 @@ AC_CANONICAL_TARGET
 
 ACX_NONCANONICAL_TARGET
 
+# Check for the 'make' the user wants to use.
+AC_CHECK_PROGS(MAKE, make)
+MAKE_IS_GNU=
+case "`$MAKE --version 2>&1 | sed 1q`" in
+  *GNU*)
+    MAKE_IS_GNU=yes
+    ;;
+esac
+AM_CONDITIONAL(GMAKE, test "$MAKE_IS_GNU" = yes)
+AC_PROG_MAKE_SET
+
 # Add HP-specific tests when appropriate.
 case $target in
   hppa*-*-hpux*)
diff --git a/gdb/testsuite/dg-extract-results.sh b/gdb/testsuite/dg-extract-results.sh
new file mode 100755
index 0000000..518c19f
--- /dev/null
+++ b/gdb/testsuite/dg-extract-results.sh
@@ -0,0 +1,423 @@
+#! /bin/sh
+
+# For a specified tool and optional list of test variants, extract
+# test results from one or more test summary (.sum) files and combine
+# the results into a new test summary file, sent to the standard output.
+# The resulting file can be used with test result comparison scripts for
+# results from tests that were run in parallel.  See usage() below.
+
+# Copyright (C) 2008, 2009 Free Software Foundation
+# Contributed by Janis Johnson <janis187@us.ibm.com>
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+PROGNAME=dg-extract-results.sh
+
+usage() {
+  cat <<EOF >&2
+Usage: $PROGNAME [-t tool] [-l variant-list] [-L] sum-file ...
+
+    tool           The tool (e.g. g++, libffi) for which to create a
+                   new test summary file.  If not specified then all
+                   specified sum files must be for the same tool.
+    variant-list   One or more test variant names.  If the list is
+                   not specified then one is constructed from all
+                   variants in the files for <tool>.
+    sum-file       A test summary file with the format of those
+                   created by runtest from DejaGnu.
+    If -L is used, merge *.log files instead of *.sum.  In this
+    mode the exact order of lines may not be preserved, just different
+    Running *.exp chunks should be in correct order.
+EOF
+}
+
+# Write a message to the standard error.
+
+msg() {
+  echo "$@" >&2
+}
+
+# Parse the command-line options.
+
+VARIANTS=""
+TOOL=""
+MODE="sum"
+
+while getopts "l:t:L" ARG; do
+  case $ARG in
+  l)  VARIANTS="${VARIANTS} ${OPTARG}";;
+  t)  test -z "$TOOL" || (msg "${PROGNAME}: only one tool can be specified"; exit 1);
+      TOOL="${OPTARG}";;
+  L)  MODE="log";;
+  \?) usage; exit 0;;
+  esac
+done
+shift `expr ${OPTIND} - 1`
+
+if test $# -lt 1 ; then
+  usage
+  exit 1
+fi
+
+TMPDIR=${TMPDIR-/tmp}
+SUM_FILES="$@"
+FIRST_SUM=$1
+TMP=
+trap 'EXIT_STATUS=$?; rm -rf $TMP && exit $EXIT_STATUS' 0
+# Create a (secure) tmp directory for tmp files.
+{
+  TMP=`(umask 077 && mktemp -d -q "${TMPDIR}/dg-combine-results-$$-XXXXXX") 2>/dev/null` &&
+  test -n "$TMP" && test -d "$TMP"
+} ||
+{
+  TMP=${TMPDIR}/dg-combine-results-$$-$RANDOM
+  (umask 077 && mkdir $TMP)
+} ||
+{
+  msg "${PROGNAME}: cannot create a temporary directory"
+  { (exit 1); exit 1; }
+}
+
+# Find a good awk.
+
+if test -z "$AWK" ; then
+  for AWK in gawk nawk awk
+  do
+    if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
+      :
+    else
+      break
+    fi
+  done
+fi
+
+# Verify that the specified summary files exist.
+
+ERROR=0
+for FILE in $SUM_FILES
+do
+  if ! test -f $FILE ; then
+    msg "${PROGNAME}: file $FILE does not exist."
+    ERROR=1
+  fi
+done
+test $ERROR -eq 0 || exit 1
+
+if [ -z "$TOOL" ]; then
+  # If no tool was specified, all specified summary files must be for
+  # the same tool.
+
+  CNT=`grep '=== .* tests ===' $SUM_FILES | $AWK '{ print $3 }' | sort -u | wc -l`
+  if [ $CNT -eq 1 ]; then
+    TOOL=`grep '=== .* tests ===' $FIRST_SUM | $AWK '{ print $2 }'`
+  else
+    msg "${PROGNAME}: sum files are for multiple tools, specify a tool"
+    msg ""
+    usage
+    exit 1
+  fi
+else
+  # Ignore the specified summary files that are not for this tool.  This
+  # should keep the relevant files in the same order.
+
+  SUM_FILES=`grep -l "=== $TOOL" $SUM_FILES`
+  if test -z "$SUM_FILES" ; then
+    msg "${PROGNAME}: none of the specified files are results for $TOOL"
+    exit 1
+  fi
+fi
+
+if [ "$TOOL" = acats ]; then
+  # Acats *.sum or *.log files aren't dejagnu generated, and they have
+  # somewhat different format.
+  ACATS_AWK=${TMP}/acats.awk
+  cat <<EOF > $ACATS_AWK
+BEGIN {
+  print_prologue=1; curfile=""; insummary=0
+  passcnt=0; failcnt=0; unsupcnt=0; failures=""
+}
+/^[ \t]*=== acats configuration ===/ {
+  insummary=0
+  if (print_prologue) print
+  next
+}
+/^[ \t]*=== acats tests ===/ {
+  if (print_prologue) print
+  print_prologue=0
+  next
+}
+/^Running chapter / {
+  if (curfile) close (curfile)
+  curfile="${TMP}/chapter-"\$3
+  print >> curfile
+  next
+}
+/^[ \t]*=== acats Summary ===/ {
+  if (curfile) close (curfile)
+  curfile=""
+  insummary=1
+  next
+}
+/^# of expected passes/		{ if (insummary == 1) passcnt += \$5; next; }
+/^# of unexpected failures/	{ if (insummary == 1) failcnt += \$5; next; }
+/^# of unsupported tests/	{ if (insummary == 1) unsupcnt += \$5; next; }
+/^\*\*\* FAILURES: / {
+  if (insummary == 1) {
+    if (failures) sub(/^\*\*\* FAILURES:/,"")
+    failures=failures""\$0
+  }
+}
+{
+  if (print_prologue) { print; next }
+  if (curfile) print >> curfile
+}
+END {
+  system ("cat ${TMP}/chapter-*")
+  print "		=== acats Summary ==="
+  print "# of expected passes		" passcnt
+  print "# of unexpected failures	" failcnt
+  if (unsupcnt) print "# of unsupported tests		" unsupcnt
+  if (failures) print failures
+}
+EOF
+
+  rm -f ${TMP}/chapter-*
+  $AWK -f $ACATS_AWK $SUM_FILES
+  exit 0
+fi
+
+# If no variants were specified, find all variants in the remaining
+# summary files.  Otherwise, ignore specified variants that aren't in
+# any of those summary files.
+
+if test -z "$VARIANTS" ; then
+  VAR_AWK=${TMP}/variants.awk
+  cat <<EOF > $VAR_AWK
+/^Schedule of variations:/      { in_vars=1; next }
+/^$/                            { in_vars=0 }
+/^Running target/               { exit }
+{ if (in_vars==1) print \$1; else next }
+EOF
+
+  touch ${TMP}/varlist
+  for FILE in $SUM_FILES; do
+    $AWK -f $VAR_AWK $FILE >> ${TMP}/varlist
+  done
+  VARIANTS="`sort -u ${TMP}/varlist`"
+else
+  VARS="$VARIANTS"
+  VARIANTS=""
+  for VAR in $VARS
+  do
+    grep -q "Running target $VAR" $SUM_FILES && VARIANTS="$VARIANTS $VAR"
+  done
+fi
+
+# Find out if we have more than one variant, or any at all.
+
+VARIANT_COUNT=0
+for VAR in $VARIANTS
+do
+  VARIANT_COUNT=`expr $VARIANT_COUNT + 1`
+done
+
+if test $VARIANT_COUNT -eq 0 ; then
+  msg "${PROGNAME}: no file for $TOOL has results for the specified variants"
+  exit 1
+fi
+
+cat $SUM_FILES \
+  | $AWK '/^Running/ { if ($2 != "target" && $3 == "...") print "EXPFILE: "$2 } ' \
+  | sort -u > ${TMP}/expfiles
+
+# Write the begining of the combined summary file.
+
+head -n 2 $FIRST_SUM
+echo
+echo "		=== $TOOL tests ==="
+echo
+echo "Schedule of variations:"
+for VAR in $VARIANTS
+do
+  echo "    $VAR"
+done
+echo
+
+# For each test variant for the tool, copy test reports from each of the
+# summary files.  Set up two awk scripts from within the loop to
+# initialize VAR and TOOL with the script, rather than assuming that the
+# available version of awk can pass variables from the command line.
+
+for VAR in $VARIANTS
+do
+  GUTS_AWK=${TMP}/guts.awk
+  cat << EOF > $GUTS_AWK
+BEGIN {
+  variant="$VAR"
+  firstvar=1
+  expfileno=1
+  cnt=0
+  print_using=0
+  need_close=0
+}
+/^EXPFILE: / {
+  expfiles[expfileno] = \$2
+  expfilesr[\$2] = expfileno
+  expfileno = expfileno + 1
+}
+/^Running target / {
+  curvar = \$3
+  if (variant == curvar && firstvar == 1) { print; print_using=1; firstvar = 0 }
+  next
+}
+/^Using / {
+  if (variant == curvar && print_using) { print; next }
+}
+/^Running / {
+  print_using=0
+  if (variant == curvar) {
+    if (need_close) close(curfile)
+    curfile="${TMP}/list"expfilesr[\$2]
+    expfileseen[\$2]=expfileseen[\$2] + 1
+    need_close=0
+    testname="00"
+    next
+  }
+}
+/\===/ { curvar = ""; next }
+/^(PASS|XPASS|FAIL|XFAIL|UNRESOLVED|WARNING|ERROR|UNSUPPORTED|UNTESTED|KFAIL):/ {
+  testname=\$2
+  # Ugly hack for gfortran.dg/dg.exp
+  if ("$TOOL" == "gfortran" && testname ~ /^gfortran.dg\/g77\//)
+    testname="h"testname
+}
+/^$/ { if ("$MODE" == "sum") next }
+{ if (variant == curvar && curfile) {
+    if ("$MODE" == "sum") {
+      printf "%s %08d|", testname, cnt >> curfile
+      cnt = cnt + 1
+    }
+    filewritten[curfile]=1
+    need_close=1
+    print >> curfile
+  } else
+    next
+}
+END {
+  n=1
+  while (n < expfileno) {
+    if (expfileseen[expfiles[n]]) {
+      print "Running "expfiles[n]" ..."
+      if (filewritten["${TMP}/list"n]) {
+	if (expfileseen[expfiles[n]] == 1)
+	  cmd="cat"
+	else
+	  cmd="LC_ALL=C sort"
+	if ("$MODE" == "sum")
+	  system (cmd" ${TMP}/list"n" | sed -n 's/^[^ ]* [^ |]*|//p'")
+	else
+	  system ("cat ${TMP}/list"n)
+      }
+    }
+    n = n + 1
+  }
+}
+EOF
+
+  SUMS_AWK=${TMP}/sums.awk
+  rm -f $SUMS_AWK
+  cat << EOF > $SUMS_AWK
+BEGIN {
+  variant="$VAR"
+  tool="$TOOL"
+  passcnt=0; failcnt=0; untstcnt=0; xpasscnt=0; xfailcnt=0; unsupcnt=0; unrescnt=0;
+  curvar=""; insummary=0
+}
+/^Running target /		{ curvar = \$3; next }
+/^# of /			{ if (variant == curvar) insummary = 1 }
+/^# of expected passes/		{ if (insummary == 1) passcnt += \$5; next; }
+/^# of unexpected successes/	{ if (insummary == 1) xpasscnt += \$5; next; }
+/^# of unexpected failures/	{ if (insummary == 1) failcnt += \$5; next; }
+/^# of expected failures/	{ if (insummary == 1) xfailcnt += \$5; next; }
+/^# of untested testcases/	{ if (insummary == 1) untstcnt += \$5; next; }
+/^# of unresolved testcases/	{ if (insummary == 1) unrescnt += \$5; next; }
+/^# of unsupported tests/	{ if (insummary == 1) unsupcnt += \$5; next; }
+/^$/				{ if (insummary == 1)
+				    { insummary = 0; curvar = "" }
+				  next
+				}
+{ next }
+END {
+  printf ("\t\t=== %s Summary for %s ===\n\n", tool, variant)
+  if (passcnt != 0) printf ("# of expected passes\t\t%d\n", passcnt)
+  if (xpasscnt != 0) printf ("# of unexpected successes\t%d\n", xpasscnt)
+  if (failcnt != 0) printf ("# of unexpected failures\t%d\n", failcnt)
+  if (xfailcnt != 0) printf ("# of expected failures\t\t%d\n", xfailcnt)
+  if (untstcnt != 0) printf ("# of untested testcases\t\t%d\n", untstcnt)
+  if (unrescnt != 0) printf ("# of unresolved testcases\t%d\n", unrescnt)
+  if (unsupcnt != 0) printf ("# of unsupported tests\t\t%d\n", unsupcnt)
+}
+EOF
+
+  PVAR=`echo $VAR | sed 's,/,.,g'`
+  TMPFILE=${TMP}/var-$PVAR
+  rm -f $TMPFILE
+  rm -f ${TMP}/list*
+  cat ${TMP}/expfiles $SUM_FILES | $AWK -f $GUTS_AWK
+  cat $SUM_FILES | $AWK -f $SUMS_AWK > $TMPFILE
+  # If there are multiple variants, output the counts for this one;
+  # otherwise there will just be the final counts at the end.
+  test $VARIANT_COUNT -eq 1 || cat $TMPFILE
+done
+
+# Set up an awk script to get the combined summary counts for the tool.
+
+TOTAL_AWK=${TMP}/total.awk
+cat << EOF > $TOTAL_AWK
+BEGIN {
+  tool="$TOOL"
+  passcnt=0; failcnt=0; untstcnt=0; xpasscnt=0; xfailcnt=0; unsupcnt=0; unrescnt=0
+}
+/^# of expected passes/		{ passcnt += \$5 }
+/^# of unexpected failures/	{ failcnt += \$5 }
+/^# of unexpected successes/	{ xpasscnt += \$5 }
+/^# of expected failures/	{ xfailcnt += \$5 }
+/^# of untested testcases/	{ untstcnt += \$5 }
+/^# of unresolved testcases/	{ unrescnt += \$5 }
+/^# of unsupported tests/	{ unsupcnt += \$5 }
+END {
+  printf ("\n\t\t=== %s Summary ===\n\n", tool)
+  if (passcnt != 0) printf ("# of expected passes\t\t%d\n", passcnt)
+  if (failcnt != 0) printf ("# of unexpected failures\t%d\n", failcnt)
+  if (xpasscnt != 0) printf ("# of unexpected successes\t%d\n", xpasscnt)
+  if (xfailcnt != 0) printf ("# of expected failures\t\t%d\n", xfailcnt)
+  if (untstcnt != 0) printf ("# of untested testcases\t\t%d\n", untstcnt)
+  if (unrescnt != 0) printf ("# of unresolved testcases\t%d\n", unrescnt)
+  if (unsupcnt != 0) printf ("# of unsupported tests\t\t%d\n", unsupcnt)
+}
+EOF
+
+# Find the total summaries for the tool and add to the end of the output.
+cat ${TMP}/var-* | $AWK -f $TOTAL_AWK
+
+# This is ugly, but if there's version output from the compiler under test
+# at the end of the file, we want it.  The other thing that might be there
+# is the final summary counts.
+tail -n 2 $FIRST_SUM | grep -q '^#' || tail -n 2 $FIRST_SUM
+
+exit 0