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# Copyright (C) 2016-2017 Alexey Kopytov <akopytov@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# ---------------------------------------------------------------------------
# Macro: SB_CONCURRENCY_KIT
# ---------------------------------------------------------------------------
AC_DEFUN([SB_CONCURRENCY_KIT], [
AC_ARG_WITH([system-ck],
AC_HELP_STRING([--with-system-ck],
[Use system-provided Concurrency Kit headers and library (requires pkg-config)]),
[sb_use_ck="system"],
[sb_use_ck="bundled"])
AC_CACHE_CHECK([whether to build with system or bundled Concurrency Kit],
[sb_cv_lib_ck], [
AS_IF([test "x$sb_use_ck" = "xsystem"],
[
sb_cv_lib_ck=[system]
], [
sb_cv_lib_ck=[bundled]
])
])
AS_IF([test "x$sb_cv_lib_ck" = "xsystem"],
# let PKG_CHECK_MODULES set CK_CFLAGS and CK_LIBS for system libck
[PKG_CHECK_MODULES([CK], [ck])],
# Set CK_CFLAGS and CK_LIBS manually for bundled libck
[
CK_CFLAGS="-I\$(abs_top_builddir)/third_party/concurrency_kit/include"
CK_LIBS="\$(abs_top_builddir)/third_party/concurrency_kit/lib/libck.a"
case $target_cpu in
powerpc*|aarch64)
# Assume 128-byte cache line on AArch64 and PowerPC
CPPFLAGS="${CPPFLAGS} -DCK_MD_CACHELINE=128"
;;
# Force --platform=i*86 for CK, otherwise its configure script
# autodetects target based on 'uname -m' which doesn't work for
# cross-compiliation
i486*|i586*)
CK_CONFIGURE_FLAGS="--platform=i586"
;;
i686*)
CK_CONFIGURE_FLAGS="--platform=i686"
;;
mips64*)
CK_CONFIGURE_FLAGS="--use-cc-builtins"
;;
esac
# Add --enable-lse to CK build flags, if LSE instructions are supported by
# the target architecture
if test "$cross_compiling" = no -a "$host_cpu" = aarch64; then
AC_MSG_CHECKING([whether LSE instructions are supported])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(,
[[
unsigned long long d = 1, a = 1;
unsigned long long *t = &a;
__asm__ __volatile__(
"stadd %0, [%1];"
: "+&r" (d)
: "r" (t)
: "memory");
]])],
[
CK_CONFIGURE_FLAGS="--enable-lse"
AC_MSG_RESULT([yes])
],
[
CK_CONFIGURE_FLAGS=""
AC_MSG_RESULT([no])
]
)
AC_SUBST([CK_CONFIGURE_FLAGS])
fi
]
)
AC_DEFINE_UNQUOTED([SB_WITH_CK], ["$sb_use_ck"],
[Whether system or bundled Concurrency Ki is used])
AM_CONDITIONAL([USE_BUNDLED_CK], [test "x$sb_use_ck" = xbundled])
])
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