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# Copyright 2015 CZ.NIC, z.s.p.o.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
# Processes --with-sanitize= and --with-sanitize-coverage= flags, checks
# if the options are supported by the compiler, and sets the following
# variables accordingly:
#
# - sanitize_enabled yes|no
# - sanitize_coverage_enabled yes|no
# - sanitize_CFLAGS -fsanitize=... -fsanitize-coverage=...
#
AC_DEFUN([AX_SANITIZER], [
# Configure options
AC_ARG_WITH([sanitize],
[AS_HELP_STRING([--with-sanitize], [Compile with sanitizer [default=no]])],
[],
[with_sanitize=no]
)
AC_ARG_WITH([sanitize-coverage],
[AS_HELP_STRING([--with-sanitize-coverage], [Compile with sanitizer coverage [default=no]])],
[],
[with_sanitize_coverage=no]
)
# Default values
AS_IF([test "$with_sanitize" = "yes"], [ with_sanitize=address ])
AS_IF([test "$with_sanitize_coverage" = "yes"], [ with_sanitize_coverage=edge,indirect-calls,8bit-counters ])
# Construct output variables
sanitize_enabled=no
sanitize_coverage_enabled=no
AS_IF([test "$with_sanitize" != "no"], [
sanitize_CFLAGS="-fsanitize=${with_sanitize}"
sanitize_enabled=yes
AS_IF([test "$with_sanitize_coverage" != "no"], [
sanitize_CFLAGS="$sanitize_CFLAGS -fsanitize-coverage=${with_sanitize_coverage}"
sanitize_coverage_enabled=yes
])
], [
sanitize_CFLAGS=
AS_IF([test "$with_sanitize_coverage" != "no"], [
AC_MSG_WARN([--with-sanitize-coverage cannot be used without --with-sanitize])
])
])
# Test compiler support
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $sanitize_CFLAGS"
AC_MSG_CHECKING([whether compiler accepts '${sanitize_CFLAGS}' options])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
AC_MSG_ERROR([Sanitizer options are not supported.])
])
CFLAGS="$save_CFLAGS"
]) # AX_SANITIZER