You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
5.6 KiB
131 lines
5.6 KiB
7 years ago
|
# ===========================================================================
|
||
|
|
# http://www.gnu.org/software/autoconf-archive/ax_sanitizers.html
|
||
|
|
# ===========================================================================
|
||
|
|
#
|
||
|
|
# SYNOPSIS
|
||
|
|
#
|
||
|
|
# AX_SANITIZERS([SANITIZERS], [ENABLED-BY-DEFAULT], [ACTION-SUCCESS])
|
||
|
|
#
|
||
|
|
# DESCRIPTION
|
||
|
|
#
|
||
|
|
# Offers users to enable one or more sanitizers (see
|
||
|
|
# https://github.com/google/sanitizers) with the corresponding
|
||
|
|
# --enable-<sanitizer>-sanitizer option.
|
||
|
|
#
|
||
|
|
# SANITIZERS is a whitespace-separated list of sanitizers to offer via
|
||
|
|
# --enable-<sanitizer>-sanitizer options, e.g. "address memory" for the
|
||
|
|
# address sanitizer and the memory sanitizer. If SANITIZERS is not specified,
|
||
|
|
# all known sanitizers to AX_SANITIZERS will be offered, which at the time of
|
||
|
|
# writing are "address memory undefined".
|
||
|
|
# NOTE that SANITIZERS is expanded at autoconf time, not at configure time,
|
||
|
|
# i.e. you cannot use shell variables in SANITIZERS.
|
||
|
|
#
|
||
|
|
# ENABLED-BY-DEFAULT is a whitespace-separated list of sanitizers which
|
||
|
|
# should be enabled by default, e.g. "memory undefined". Note that not all
|
||
|
|
# sanitizers can be combined, e.g. memory sanitizer cannot be enabled when
|
||
|
|
# address sanitizer is already enabled.
|
||
|
|
# Set ENABLED-BY-DEFAULT to a single whitespace in order to disable all
|
||
|
|
# sanitizers by default.
|
||
|
|
# ENABLED-BY-DEFAULT is expanded at configure time, so you can use shell
|
||
|
|
# variables.
|
||
|
|
#
|
||
|
|
# ACTION-SUCCESS allows to specify shell commands to execute on success, i.e.
|
||
|
|
# when one of the sanitizers was successfully enabled. This is a good place
|
||
|
|
# to call AC_DEFINE for any precompiler constants you might need to make your
|
||
|
|
# code play nice with sanitizers.
|
||
|
|
#
|
||
|
|
# The variable ax_enabled_sanitizers contains a whitespace-separated list of
|
||
|
|
# all enabled sanitizers, so that you can print them at the end of configure,
|
||
|
|
# if you wish.
|
||
|
|
#
|
||
|
|
# The additional --enable-sanitizers option allows users to enable/disable
|
||
|
|
# all sanitizers, effectively overriding ENABLED-BY-DEFAULT.
|
||
|
|
#
|
||
|
|
# EXAMPLES
|
||
|
|
#
|
||
|
|
# AX_SANITIZERS([address])
|
||
|
|
# dnl offer users to enable address sanitizer via --enable-address-sanitizer
|
||
|
|
#
|
||
|
|
# is_debug_build=…
|
||
|
|
# if test "x$is_debug_build" = "xyes"; then
|
||
|
|
# default_sanitizers="address memory"
|
||
|
|
# else
|
||
|
|
# default_sanitizers=
|
||
|
|
# fi
|
||
|
|
# AX_SANITIZERS([address memory], [$default_sanitizers])
|
||
|
|
# dnl enable address sanitizer and memory sanitizer by default for debug
|
||
|
|
# dnl builds, e.g. when building from git instead of a dist tarball.
|
||
|
|
#
|
||
|
|
# AX_SANITIZERS(, , [
|
||
|
|
# AC_DEFINE([SANITIZERS_ENABLED],
|
||
|
|
# [],
|
||
|
|
# [At least one sanitizer was enabled])])
|
||
|
|
# dnl enable all sanitizers known to AX_SANITIZERS by default and set the
|
||
|
|
# dnl SANITIZERS_ENABLED precompiler constant.
|
||
|
|
#
|
||
|
|
# AX_SANITIZERS(, [ ])
|
||
|
|
# dnl provide all sanitizers, but enable none by default.
|
||
|
|
#
|
||
|
|
# LICENSE
|
||
|
|
#
|
||
|
|
# Copyright (c) 2016 Michael Stapelberg <michael@i3wm.org>
|
||
|
|
#
|
||
|
|
# 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.
|
||
|
|
|
||
|
|
AC_DEFUN([AX_SANITIZERS],
|
||
|
|
[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
|
||
|
|
AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
|
||
|
|
AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
|
||
|
|
AC_ARG_ENABLE(sanitizers,
|
||
|
|
AS_HELP_STRING(
|
||
|
|
[--enable-sanitizers],
|
||
|
|
[enable all known sanitizers]),
|
||
|
|
[ax_sanitizers_default=$enableval],
|
||
|
|
[ax_sanitizers_default=])
|
||
|
|
ax_enabled_sanitizers=
|
||
|
|
m4_foreach_w([mysan], m4_default($1, [address memory undefined]), [
|
||
|
|
dnl If ax_sanitizers_default is unset, i.e. the user neither explicitly
|
||
|
|
dnl enabled nor explicitly disabled all sanitizers, we get the default value
|
||
|
|
dnl for this sanitizer based on whether it is listed in ENABLED-BY-DEFAULT.
|
||
|
|
AS_IF([test "x$ax_sanitizers_default" = "x"], [dnl
|
||
|
|
ax_sanitizer_default=
|
||
|
|
for mycheck in m4_default([$2], [address memory undefined]); do
|
||
|
|
AS_IF([test "x$mycheck" = "x[]mysan"], [ax_sanitizer_default=yes])
|
||
|
|
done
|
||
|
|
AS_IF([test "x$ax_sanitizer_default" = "x"], [ax_sanitizer_default=no])
|
||
|
|
],
|
||
|
|
[ax_sanitizer_default=$ax_sanitizers_default])
|
||
|
|
AC_ARG_ENABLE(mysan[]-sanitizer,
|
||
|
|
AS_HELP_STRING(
|
||
|
|
[--enable-[]mysan[]-sanitizer],
|
||
|
|
[enable -fsanitize=mysan]),
|
||
|
|
[ax_sanitizer_enabled=$enableval],
|
||
|
|
[ax_sanitizer_enabled=$ax_sanitizer_default])
|
||
|
|
|
||
|
|
AS_IF([test "x$ax_sanitizer_enabled" = "xyes"], [
|
||
|
|
dnl Not using AX_APPEND_COMPILE_FLAGS and AX_APPEND_LINK_FLAGS because they
|
||
|
|
dnl lack the ability to specify ACTION-SUCCESS.
|
||
|
|
AX_CHECK_COMPILE_FLAG([-fsanitize=[]mysan], [
|
||
|
|
AX_CHECK_LINK_FLAG([-fsanitize=[]mysan], [
|
||
|
|
AX_APPEND_FLAG([-fsanitize=[]mysan], [])
|
||
|
|
dnl If and only if libtool is being used, LDFLAGS needs to contain -Wc,-fsanitize=….
|
||
|
|
dnl See e.g. https://sources.debian.net/src/systemd/231-7/configure.ac/?hl=128#L135
|
||
|
|
dnl TODO: how can recognize that situation and add -Wc,?
|
||
|
|
AX_APPEND_FLAG([-fsanitize=[]mysan], [LDFLAGS])
|
||
|
|
dnl TODO: add -fPIE -pie for memory
|
||
|
|
# -fno-omit-frame-pointer results in nicer stack traces in error
|
||
|
|
# messages, see http://clang.llvm.org/docs/AddressSanitizer.html#usage
|
||
|
|
AX_CHECK_COMPILE_FLAG([-fno-omit-frame-pointer], [
|
||
|
|
AX_APPEND_FLAG([-fno-omit-frame-pointer], [])])
|
||
|
|
dnl TODO: at least for clang, we should specify exactly -O1, not -O2 or -O0, so that performance is reasonable but stacktraces are not tampered with (due to inlining), see http://clang.llvm.org/docs/AddressSanitizer.html#usage
|
||
|
|
m4_default([$3], :)
|
||
|
|
ax_enabled_sanitizers="[]mysan $ax_enabled_sanitizers"
|
||
|
|
])
|
||
|
|
])
|
||
|
|
])
|
||
|
|
])dnl
|
||
|
|
])dnl AX_SANITIZERS
|