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- 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
- ])
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