# ax_linuxkm.m4 -- macros for getting attributes of default configured kernel # # Copyright (C) 2006-2021 wolfSSL Inc. # # This file is part of wolfSSL. # # wolfSSL 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. # # wolfSSL 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 02110-1335, USA #/ AC_DEFUN([AC_PATH_DEFAULT_KERNEL_SOURCE], [ AC_MSG_CHECKING([for default kernel build root]) if test -d /lib/modules/`uname -r`/build/.config; then DEFAULT_KERNEL_ROOT=/lib/modules/`uname -r`/build AC_MSG_RESULT([$DEFAULT_KERNEL_ROOT]) elif test -r /usr/src/linux/.config; then DEFAULT_KERNEL_ROOT=/usr/src/linux AC_MSG_RESULT([$DEFAULT_KERNEL_ROOT]) else AC_MSG_RESULT([no default configured kernel found]) fi ]) AC_DEFUN([AC_DEFAULT_KERNEL_ARCH], [ AC_REQUIRE([AC_PROG_AWK]) AC_MSG_CHECKING([for default kernel arch]) if test -f ${KERNEL_ROOT}/.config; then # "# Linux/x86 5.8.1-gentoo Kernel Configuration" DEFAULT_KERNEL_ARCH=`$AWK '/^# Linux/\ {split($[]2,arch_fields,"/"); print arch_fields[[2]]; exit(0);}' ${KERNEL_ROOT}/.config` fi if test -n "$DEFAULT_KERNEL_ARCH"; then AC_MSG_RESULT([$DEFAULT_KERNEL_ARCH]) else AC_MSG_RESULT([no default configured kernel arch found]) fi ]) AC_DEFUN([AX_SIMD_CC_COMPILER_FLAGS], [ AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS]) AC_REQUIRE([AX_VCS_CHECKOUT]) AC_REQUIRE([AX_DEBUG]) AC_LANG_PUSH([C]) if test "$CFLAGS_FPU_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-mno-80387],[CFLAGS_FPU_DISABLE]) AX_APPEND_COMPILE_FLAGS([-mno-fp-ret-in-387],[CFLAGS_FPU_DISABLE]) AX_APPEND_COMPILE_FLAGS([-mno-fpu],[CFLAGS_FPU_DISABLE]) fi if test "$CFLAGS_FPU_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-m80387],[CFLAGS_FPU_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mfpu],[CFLAGS_FPU_ENABLE]) fi if test "$CFLAGS_SIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-mno-sse],[CFLAGS_SIMD_DISABLE]) AX_APPEND_COMPILE_FLAGS([-mgeneral-regs-only],[CFLAGS_SIMD_DISABLE]) fi if test "$CFLAGS_SIMD_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-msse],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mmmx],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-msse2],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-msse4],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mavx],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mavx2],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mno-general-regs-only],[CFLAGS_SIMD_ENABLE]) fi if test "$CFLAGS_AUTO_VECTORIZE_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-fno-builtin],[CFLAGS_AUTO_VECTORIZE_DISABLE]) AX_APPEND_COMPILE_FLAGS([-fno-tree-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE]) AX_APPEND_COMPILE_FLAGS([-fno-tree-loop-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE]) AX_APPEND_COMPILE_FLAGS([-fno-tree-slp-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE]) fi if test "$CFLAGS_AUTO_VECTORIZE_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-fbuiltin],[CFLAGS_AUTO_VECTORIZE_ENABLE]) AX_APPEND_COMPILE_FLAGS([-ftree-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE]) AX_APPEND_COMPILE_FLAGS([-ftree-loop-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE]) AX_APPEND_COMPILE_FLAGS([-ftree-slp-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE]) fi case "$host_cpu" in x86_64) # note that gnu as accepts archs of the form -march=+no387, signifying the # default target arch modified with no387. by default, we use that here. if test "$ASFLAGS_FPU_DISABLE_SIMD_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+no87+no287+no387+no687+sse+sse2+sse3+ssse3+sse4.1+sse4.2+sse4+avx+avx2+avx512f"],[ASFLAGS_FPU_DISABLE_SIMD_ENABLE]) fi if test "$ASFLAGS_FPU_ENABLE_SIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+387+687+nosse+nosse2+nosse3+nossse3+nosse4.1+nosse4.2+nosse4+noavx+noavx2+noavx512f"],[ASFLAGS_FPU_ENABLE_SIMD_DISABLE]) fi if test "$ASFLAGS_FPUSIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+no387+no687+nosse+nosse2+nosse3+nossse3+nosse4.1+nosse4.2+nosse4+noavx+noavx2+noavx512f"],[ASFLAGS_FPUSIMD_DISABLE]) fi if test "$ASFLAGS_FPUSIMD_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+387+687+sse+sse2+sse3+ssse3+sse4.1+sse4.2+sse4+avx+avx2+avx512f"],[ASFLAGS_FPUSIMD_ENABLE]) fi ;; aarch64) if test "$BASE_TARGET_ARCH" = ""; then BASE_TARGET_ARCH=all fi if test "$ASFLAGS_FPU_DISABLE_SIMD_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+nofpu+simd"],[ASFLAGS_FPU_DISABLE_SIMD_ENABLE]) fi if test "$ASFLAGS_FPU_ENABLE_SIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+fpu+nosimd"],[ASFLAGS_FPU_ENABLE_SIMD_DISABLE]) fi if test "$ASFLAGS_FPUSIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+nofpu+nosimd"],[ASFLAGS_FPUSIMD_DISABLE]) fi if test "$ASFLAGS_FPUSIMD_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+fpu+simd"],[ASFLAGS_FPUSIMD_ENABLE]) fi ;; *) # fall back to defining only $ASFLAGS_FPUSIMD_DISABLE if test "$BASE_TARGET_ARCH" = ""; then BASE_TARGET_ARCH=all fi if test "$ASFLAGS_FPUSIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+nofpu+nosimd"],[ASFLAGS_FPUSIMD_DISABLE]) fi ;; esac AC_LANG_POP ])