mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-23 18:14:13 +08:00
47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
dnl Sanitization-related configure macro for GDB
|
|
dnl Copyright (C) 2018-2020 Free Software Foundation, Inc.
|
|
dnl
|
|
dnl This file is part of GDB.
|
|
dnl
|
|
dnl This program is free software; you can redistribute it and/or modify
|
|
dnl it under the terms of the GNU General Public License as published by
|
|
dnl the Free Software Foundation; either version 3 of the License, or
|
|
dnl (at your option) any later version.
|
|
dnl
|
|
dnl This program is distributed in the hope that it will be useful,
|
|
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
dnl GNU General Public License for more details.
|
|
dnl
|
|
dnl You should have received a copy of the GNU General Public License
|
|
dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
AC_DEFUN([AM_GDB_UBSAN],[
|
|
AC_ARG_ENABLE(ubsan,
|
|
AS_HELP_STRING([--enable-ubsan],
|
|
[enable undefined behavior sanitizer (auto/yes/no)]),
|
|
[],enable_ubsan=no)
|
|
if test "x$enable_ubsan" = xauto; then
|
|
if $development; then
|
|
enable_ubsan=yes
|
|
fi
|
|
fi
|
|
AC_LANG_PUSH([C++])
|
|
if test "x$enable_ubsan" = xyes; then
|
|
AC_MSG_CHECKING(whether -fsanitize=undefined is accepted)
|
|
saved_CXXFLAGS="$CXXFLAGS"
|
|
CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover=undefined"
|
|
dnl A link check is required because it is possible to install gcc
|
|
dnl without libubsan, leading to link failures when compiling with
|
|
dnl -fsanitize=undefined.
|
|
AC_TRY_LINK([],[],enable_ubsan=yes,enable_ubsan=no)
|
|
CXXFLAGS="$saved_CXXFLAGS"
|
|
AC_MSG_RESULT($enable_ubsan)
|
|
if test "x$enable_ubsan" = xyes; then
|
|
WARN_CFLAGS="$WARN_CFLAGS -fsanitize=undefined -fno-sanitize-recover=undefined"
|
|
CONFIG_LDFLAGS="$CONFIG_LDFLAGS -fsanitize=undefined"
|
|
fi
|
|
fi
|
|
AC_LANG_POP([C++])
|
|
])
|