--- /dev/null
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_valgrind_check.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_VALGRIND_DFLT(memcheck|helgrind|drd|sgcheck, on|off)
+# AX_VALGRIND_CHECK()
+#
+# DESCRIPTION
+#
+# AX_VALGRIND_CHECK checks whether Valgrind is present and, if so, allows
+# running `make check` under a variety of Valgrind tools to check for
+# memory and threading errors.
+#
+# Defines VALGRIND_CHECK_RULES which should be substituted in your
+# Makefile; and $enable_valgrind which can be used in subsequent configure
+# output. VALGRIND_ENABLED is defined and substituted, and corresponds to
+# the value of the --enable-valgrind option, which defaults to being
+# enabled if Valgrind is installed and disabled otherwise. Individual
+# Valgrind tools can be disabled via --disable-valgrind-<tool>, the
+# default is configurable via the AX_VALGRIND_DFLT command or is to use
+# all commands not disabled via AX_VALGRIND_DFLT. All AX_VALGRIND_DFLT
+# calls must be made before the call to AX_VALGRIND_CHECK.
+#
+# If unit tests are written using a shell script and automake's
+# LOG_COMPILER system, the $(VALGRIND) variable can be used within the
+# shell scripts to enable Valgrind, as described here:
+#
+# https://www.gnu.org/software/gnulib/manual/html_node/Running-self_002dtests-under-valgrind.html
+#
+# Usage example:
+#
+# configure.ac:
+#
+# AX_VALGRIND_DFLT([sgcheck], [off])
+# AX_VALGRIND_CHECK
+#
+# Makefile.am:
+#
+# @VALGRIND_CHECK_RULES@
+# VALGRIND_SUPPRESSIONS_FILES = my-project.supp
+# EXTRA_DIST = my-project.supp
+#
+# This results in a "check-valgrind" rule being added to any Makefile.am
+# which includes "@VALGRIND_CHECK_RULES@" (assuming the module has been
+# configured with --enable-valgrind). Running `make check-valgrind` in
+# that directory will run the module's test suite (`make check`) once for
+# each of the available Valgrind tools (out of memcheck, helgrind and drd)
+# while the sgcheck will be skipped unless enabled again on the
+# commandline with --enable-valgrind-sgcheck. The results for each check
+# will be output to test-suite-$toolname.log. The target will succeed if
+# there are zero errors and fail otherwise.
+#
+# Alternatively, a "check-valgrind-$TOOL" rule will be added, for $TOOL in
+# memcheck, helgrind, drd and sgcheck. These are useful because often only
+# some of those tools can be ran cleanly on a codebase.
+#
+# The macro supports running with and without libtool.
+#
+# LICENSE
+#
+# Copyright (c) 2014, 2015, 2016 Philip Withnall <philip.withnall@collabora.co.uk>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 13
+
+dnl Configured tools
+m4_define([valgrind_tool_list], [[memcheck], [helgrind], [drd], [sgcheck]])
+m4_set_add_all([valgrind_exp_tool_set], [sgcheck])
+m4_foreach([vgtool], [valgrind_tool_list],
+ [m4_define([en_dflt_valgrind_]vgtool, [on])])
+
+AC_DEFUN([AX_VALGRIND_DFLT],[
+ m4_define([en_dflt_valgrind_$1], [$2])
+])dnl
+
+AC_DEFUN([AX_VALGRIND_CHECK],[
+ dnl Check for --enable-valgrind
+ AC_ARG_ENABLE([valgrind],
+ [AS_HELP_STRING([--enable-valgrind], [Whether to enable Valgrind on the unit tests])],
+ [enable_valgrind=$enableval],[enable_valgrind=])
+
+ AS_IF([test "$enable_valgrind" != "no"],[
+ # Check for Valgrind.
+ AC_CHECK_PROG([VALGRIND],[valgrind],[valgrind])
+ AS_IF([test "$VALGRIND" = ""],[
+ AS_IF([test "$enable_valgrind" = "yes"],[
+ AC_MSG_ERROR([Could not find valgrind; either install it or reconfigure with --disable-valgrind])
+ ],[
+ enable_valgrind=no
+ ])
+ ],[
+ enable_valgrind=yes
+ ])
+ ])
+
+ AM_CONDITIONAL([VALGRIND_ENABLED],[test "$enable_valgrind" = "yes"])
+ AC_SUBST([VALGRIND_ENABLED],[$enable_valgrind])
+
+ # Check for Valgrind tools we care about.
+ [valgrind_enabled_tools=]
+ m4_foreach([vgtool],[valgrind_tool_list],[
+ AC_ARG_ENABLE([valgrind-]vgtool,
+ m4_if(m4_defn([en_dflt_valgrind_]vgtool),[off],dnl
+[AS_HELP_STRING([--enable-valgrind-]vgtool, [Whether to use ]vgtool[ during the Valgrind tests])],dnl
+[AS_HELP_STRING([--disable-valgrind-]vgtool, [Whether to skip ]vgtool[ during the Valgrind tests])]),
+ [enable_valgrind_]vgtool[=$enableval],
+ [enable_valgrind_]vgtool[=])
+ AS_IF([test "$enable_valgrind" = "no"],[
+ enable_valgrind_]vgtool[=no],
+ [test "$enable_valgrind_]vgtool[" ]dnl
+m4_if(m4_defn([en_dflt_valgrind_]vgtool), [off], [= "yes"], [!= "no"]),[
+ AC_CACHE_CHECK([for Valgrind tool ]vgtool,
+ [ax_cv_valgrind_tool_]vgtool,[
+ ax_cv_valgrind_tool_]vgtool[=no
+ m4_set_contains([valgrind_exp_tool_set],vgtool,
+ [m4_define([vgtoolx],[exp-]vgtool)],
+ [m4_define([vgtoolx],vgtool)])
+ AS_IF([`$VALGRIND --tool=]vgtoolx[ --help >/dev/null 2>&1`],[
+ ax_cv_valgrind_tool_]vgtool[=yes
+ ])
+ ])
+ AS_IF([test "$ax_cv_valgrind_tool_]vgtool[" = "no"],[
+ AS_IF([test "$enable_valgrind_]vgtool[" = "yes"],[
+ AC_MSG_ERROR([Valgrind does not support ]vgtool[; reconfigure with --disable-valgrind-]vgtool)
+ ],[
+ enable_valgrind_]vgtool[=no
+ ])
+ ],[
+ enable_valgrind_]vgtool[=yes
+ ])
+ ])
+ AS_IF([test "$enable_valgrind_]vgtool[" = "yes"],[
+ valgrind_enabled_tools="$valgrind_enabled_tools ]m4_bpatsubst(vgtool,[^exp-])["
+ ])
+ AC_SUBST([ENABLE_VALGRIND_]vgtool,[$enable_valgrind_]vgtool)
+ ])
+ AC_SUBST([valgrind_tools],["]m4_join([ ], valgrind_tool_list)["])
+ AC_SUBST([valgrind_enabled_tools],[$valgrind_enabled_tools])
+
+[VALGRIND_CHECK_RULES='
+# Valgrind check
+#
+# Optional:
+# - VALGRIND_SUPPRESSIONS_FILES: Space-separated list of Valgrind suppressions
+# files to load. (Default: empty)
+# - VALGRIND_FLAGS: General flags to pass to all Valgrind tools.
+# (Default: --num-callers=30)
+# - VALGRIND_$toolname_FLAGS: Flags to pass to Valgrind $toolname (one of:
+# memcheck, helgrind, drd, sgcheck). (Default: various)
+
+# Optional variables
+VALGRIND_SUPPRESSIONS ?= $(addprefix --suppressions=,$(VALGRIND_SUPPRESSIONS_FILES))
+VALGRIND_FLAGS ?= --num-callers=30
+VALGRIND_memcheck_FLAGS ?= --leak-check=full --show-reachable=no
+VALGRIND_helgrind_FLAGS ?= --history-level=approx
+VALGRIND_drd_FLAGS ?=
+VALGRIND_sgcheck_FLAGS ?=
+
+# Internal use
+valgrind_log_files = $(addprefix test-suite-,$(addsuffix .log,$(valgrind_tools)))
+
+valgrind_memcheck_flags = --tool=memcheck $(VALGRIND_memcheck_FLAGS)
+valgrind_helgrind_flags = --tool=helgrind $(VALGRIND_helgrind_FLAGS)
+valgrind_drd_flags = --tool=drd $(VALGRIND_drd_FLAGS)
+valgrind_sgcheck_flags = --tool=exp-sgcheck $(VALGRIND_sgcheck_FLAGS)
+
+valgrind_quiet = $(valgrind_quiet_$(V))
+valgrind_quiet_ = $(valgrind_quiet_$(AM_DEFAULT_VERBOSITY))
+valgrind_quiet_0 = --quiet
+valgrind_v_use = $(valgrind_v_use_$(V))
+valgrind_v_use_ = $(valgrind_v_use_$(AM_DEFAULT_VERBOSITY))
+valgrind_v_use_0 = @echo " USE " $(patsubst check-valgrind-%,%,$''@):;
+
+# Support running with and without libtool.
+ifneq ($(LIBTOOL),)
+valgrind_lt = $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=execute
+else
+valgrind_lt =
+endif
+
+# Use recursive makes in order to ignore errors during check
+check-valgrind:
+ifeq ($(VALGRIND_ENABLED),yes)
+ -$(A''M_V_at)$(foreach tool,$(valgrind_enabled_tools), \
+ $(MAKE) $(AM_MAKEFLAGS) -k check-valgrind-$(tool); \
+ )
+else
+ @echo "Need to reconfigure with --enable-valgrind"
+endif
+
+# Valgrind running
+VALGRIND_TESTS_ENVIRONMENT = \
+ $(TESTS_ENVIRONMENT) \
+ env VALGRIND=$(VALGRIND) \
+ G_SLICE=always-malloc,debug-blocks \
+ G_DEBUG=fatal-warnings,fatal-criticals,gc-friendly
+
+VALGRIND_LOG_COMPILER = \
+ $(valgrind_lt) \
+ $(VALGRIND) $(VALGRIND_SUPPRESSIONS) --error-exitcode=1 $(VALGRIND_FLAGS)
+
+define valgrind_tool_rule =
+check-valgrind-$(1):
+ifeq ($$(VALGRIND_ENABLED)-$$(ENABLE_VALGRIND_$(1)),yes-yes)
+ $$(valgrind_v_use)$$(MAKE) check-TESTS \
+ TESTS_ENVIRONMENT="$$(VALGRIND_TESTS_ENVIRONMENT)" \
+ LOG_COMPILER="$$(VALGRIND_LOG_COMPILER)" \
+ LOG_FLAGS="$$(valgrind_$(1)_flags)" \
+ TEST_SUITE_LOG=test-suite-$(1).log
+else ifeq ($$(VALGRIND_ENABLED),yes)
+ @echo "Need to reconfigure with --enable-valgrind-$(1)"
+else
+ @echo "Need to reconfigure with --enable-valgrind"
+endif
+endef
+
+$(foreach tool,$(valgrind_tools),$(eval $(call valgrind_tool_rule,$(tool))))
+
+A''M_DISTCHECK_CONFIGURE_FLAGS ?=
+A''M_DISTCHECK_CONFIGURE_FLAGS += --disable-valgrind
+
+MOSTLYCLEANFILES ?=
+MOSTLYCLEANFILES += $(valgrind_log_files)
+
+.PHONY: check-valgrind $(add-prefix check-valgrind-,$(valgrind_tools))
+']
+
+ AC_SUBST([VALGRIND_CHECK_RULES])
+ m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([VALGRIND_CHECK_RULES])])
+])
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