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