149 lines
5.9 KiB
Text
149 lines
5.9 KiB
Text
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# ax_linuxkm.m4 -- macros for getting attributes of default configured kernel
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#
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# Copyright (C) 2006-2020 wolfSSL Inc.
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#
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# This file is part of wolfSSL.
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#
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# wolfSSL is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# wolfSSL is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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AC_DEFUN([AC_PATH_DEFAULT_KERNEL_SOURCE],
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[
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AC_MSG_CHECKING([for default kernel build root])
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if test -d /lib/modules/`uname -r`/build/.config; then
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DEFAULT_KERNEL_ROOT=/lib/modules/`uname -r`/build
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AC_MSG_RESULT([$DEFAULT_KERNEL_ROOT])
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elif test -r /usr/src/linux/.config; then
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DEFAULT_KERNEL_ROOT=/usr/src/linux
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AC_MSG_RESULT([$DEFAULT_KERNEL_ROOT])
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else
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AC_MSG_RESULT([no default configured kernel found])
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fi
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])
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AC_DEFUN([AC_DEFAULT_KERNEL_ARCH],
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[
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AC_REQUIRE([AC_PROG_AWK])
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AC_MSG_CHECKING([for default kernel arch])
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if test -f ${KERNEL_ROOT}/.config; then
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# "# Linux/x86 5.8.1-gentoo Kernel Configuration"
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DEFAULT_KERNEL_ARCH=`$AWK '/^# Linux/\
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{split($[]2,arch_fields,"/"); print arch_fields[[2]]; exit(0);}' ${KERNEL_ROOT}/.config`
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fi
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if test -n "$DEFAULT_KERNEL_ARCH"; then
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AC_MSG_RESULT([$DEFAULT_KERNEL_ARCH])
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else
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AC_MSG_RESULT([no default configured kernel arch found])
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fi
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])
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AC_DEFUN([AX_SIMD_CC_COMPILER_FLAGS], [
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AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS])
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AC_REQUIRE([AX_VCS_CHECKOUT])
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AC_REQUIRE([AX_DEBUG])
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AC_LANG_PUSH([C])
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if test "$CFLAGS_FPU_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-mno-80387],[CFLAGS_FPU_DISABLE])
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AX_APPEND_COMPILE_FLAGS([-mno-fp-ret-in-387],[CFLAGS_FPU_DISABLE])
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AX_APPEND_COMPILE_FLAGS([-mno-fpu],[CFLAGS_FPU_DISABLE])
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fi
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if test "$CFLAGS_FPU_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-m80387],[CFLAGS_FPU_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-mfpu],[CFLAGS_FPU_ENABLE])
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fi
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if test "$CFLAGS_SIMD_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-mno-sse],[CFLAGS_SIMD_DISABLE])
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AX_APPEND_COMPILE_FLAGS([-mgeneral-regs-only],[CFLAGS_SIMD_DISABLE])
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fi
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if test "$CFLAGS_SIMD_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-msse],[CFLAGS_SIMD_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-mmmx],[CFLAGS_SIMD_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-msse2],[CFLAGS_SIMD_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-msse4],[CFLAGS_SIMD_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-mavx],[CFLAGS_SIMD_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-mavx2],[CFLAGS_SIMD_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-mno-general-regs-only],[CFLAGS_SIMD_ENABLE])
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fi
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if test "$CFLAGS_AUTO_VECTORIZE_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-fno-builtin],[CFLAGS_AUTO_VECTORIZE_DISABLE])
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AX_APPEND_COMPILE_FLAGS([-fno-tree-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE])
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AX_APPEND_COMPILE_FLAGS([-fno-tree-loop-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE])
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AX_APPEND_COMPILE_FLAGS([-fno-tree-slp-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE])
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fi
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if test "$CFLAGS_AUTO_VECTORIZE_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-fbuiltin],[CFLAGS_AUTO_VECTORIZE_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-ftree-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-ftree-loop-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE])
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AX_APPEND_COMPILE_FLAGS([-ftree-slp-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE])
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fi
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case "$host_cpu" in
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x86_64)
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# note that gnu as accepts archs of the form -march=+no387, signifying the
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# default target arch modified with no387. by default, we use that here.
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if test "$ASFLAGS_FPU_DISABLE_SIMD_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+no87+no287+no387+no687+sse+sse2+sse3+ssse3+sse4.1+sse4.2+sse4+avx+avx2+avx512f"],[ASFLAGS_FPU_DISABLE_SIMD_ENABLE])
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fi
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if test "$ASFLAGS_FPU_ENABLE_SIMD_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+387+687+nosse+nosse2+nosse3+nossse3+nosse4.1+nosse4.2+nosse4+noavx+noavx2+noavx512f"],[ASFLAGS_FPU_ENABLE_SIMD_DISABLE])
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fi
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if test "$ASFLAGS_FPUSIMD_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+no387+no687+nosse+nosse2+nosse3+nossse3+nosse4.1+nosse4.2+nosse4+noavx+noavx2+noavx512f"],[ASFLAGS_FPUSIMD_DISABLE])
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fi
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if test "$ASFLAGS_FPUSIMD_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+387+687+sse+sse2+sse3+ssse3+sse4.1+sse4.2+sse4+avx+avx2+avx512f"],[ASFLAGS_FPUSIMD_ENABLE])
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fi
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;;
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aarch64)
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if test "$BASE_TARGET_ARCH" = ""; then
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BASE_TARGET_ARCH=all
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fi
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if test "$ASFLAGS_FPU_DISABLE_SIMD_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+nofpu+simd"],[ASFLAGS_FPU_DISABLE_SIMD_ENABLE])
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fi
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if test "$ASFLAGS_FPU_ENABLE_SIMD_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+fpu+nosimd"],[ASFLAGS_FPU_ENABLE_SIMD_DISABLE])
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fi
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if test "$ASFLAGS_FPUSIMD_DISABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+nofpu+nosimd"],[ASFLAGS_FPUSIMD_DISABLE])
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fi
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if test "$ASFLAGS_FPUSIMD_ENABLE" = ""; then
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AX_APPEND_COMPILE_FLAGS([-Wa,-march="${BASE_TARGET_ARCH}+fpu+simd"],[$ASFLAGS_FPUSIMD_ENABLE])
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fi
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;;
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*)
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AC_MSG_ERROR(["Don\'t know how to construct assembler flags for target \"${host_cpu}\"."])
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;;
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esac
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AC_LANG_POP
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])
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