configure: unify case statements for CPU canonicalization
The CPU model has to be canonicalized to what Meson wants in the cross file, to what Linux uses for its asm-$ARCH directories, and to what QEMU uses for its user-mode emulation host/$ARCH directories. Do all three in a single case statement, and check that the Linux and QEMU directories actually exist. At a small cost in repeated lines, this ensures that there are no hidden ordering requirements between the case statements. In particular, commit89e5b7935e("configure: Fix linux-user host detection for riscv64", 2023-08-06) broke ppc64le because it assigned host_arch based on a non-canonicalized version of $cpu. Reported-by: Joel Stanley <joel@jms.id.au> Fixes:89e5b7935e("configure: Fix linux-user host detection for riscv64", 2023-08-06) Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Michael Tokarev <mjt@tls.msk.ru> Message-ID: <20230808120303.585509-4-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Paolo Bonzini
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175
configure
vendored
175
configure
vendored
@ -469,59 +469,119 @@ else
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echo "WARNING: unrecognized host CPU, proceeding with 'uname -m' output '$cpu'"
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fi
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case "$cpu" in
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riscv*)
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host_arch=riscv ;;
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x32)
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host_arch=x86_64 ;;
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*)
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host_arch="$cpu" ;;
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esac
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# Normalise host CPU name and set multilib cflags. The canonicalization
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# isn't really necessary, because the architectures that we check for
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# should not hit the 'uname -m' case, but better safe than sorry.
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# Normalise host CPU name to the values used by Meson cross files and in source
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# directories, and set multilib cflags. The canonicalization isn't really
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# necessary, because the architectures that we check for should not hit the
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# 'uname -m' case, but better safe than sorry in case --cpu= is used.
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#
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# Note that this case should only have supported host CPUs, not guests.
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# Please keep it sorted and synchronized with meson.build's host_arch.
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host_arch=
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linux_arch=
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case "$cpu" in
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aarch64)
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host_arch=aarch64
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linux_arch=arm64
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;;
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armv*b|armv*l|arm)
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cpu="arm" ;;
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cpu=arm
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host_arch=arm
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linux_arch=arm
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;;
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i386|i486|i586|i686)
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cpu="i386"
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CPU_CFLAGS="-m32" ;;
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host_arch=i386
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linux_arch=x86
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CPU_CFLAGS="-m32"
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;;
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loongarch*)
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cpu=loongarch64
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host_arch=loongarch64
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;;
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mips64*)
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cpu=mips64
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host_arch=mips
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linux_arch=mips
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;;
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mips*)
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cpu=mips
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host_arch=mips
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linux_arch=mips
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;;
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ppc)
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host_arch=ppc
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linux_arch=powerpc
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CPU_CFLAGS="-m32"
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;;
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ppc64)
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host_arch=ppc64
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linux_arch=powerpc
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CPU_CFLAGS="-m64 -mbig-endian"
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;;
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ppc64le)
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cpu=ppc64
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host_arch=ppc64
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linux_arch=powerpc
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CPU_CFLAGS="-m64 -mlittle-endian"
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;;
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riscv32 | riscv64)
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host_arch=riscv
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linux_arch=riscv
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;;
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s390)
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linux_arch=s390
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CPU_CFLAGS="-m31"
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;;
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s390x)
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host_arch=s390x
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linux_arch=s390
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CPU_CFLAGS="-m64"
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;;
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sparc|sun4[cdmuv])
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cpu=sparc
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CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc"
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;;
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sparc64)
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host_arch=sparc64
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CPU_CFLAGS="-m64 -mcpu=ultrasparc"
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;;
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x32)
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cpu="x86_64"
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CPU_CFLAGS="-mx32" ;;
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host_arch=x86_64
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linux_arch=x86
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CPU_CFLAGS="-mx32"
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;;
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x86_64|amd64)
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cpu="x86_64"
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host_arch=x86_64
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linux_arch=x86
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# ??? Only extremely old AMD cpus do not have cmpxchg16b.
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# If we truly care, we should simply detect this case at
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# runtime and generate the fallback to serial emulation.
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CPU_CFLAGS="-m64 -mcx16" ;;
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mips*)
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cpu="mips" ;;
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ppc)
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CPU_CFLAGS="-m32" ;;
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ppc64)
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CPU_CFLAGS="-m64 -mbig-endian" ;;
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ppc64le)
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cpu="ppc64"
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CPU_CFLAGS="-m64 -mlittle-endian" ;;
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s390)
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CPU_CFLAGS="-m31" ;;
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s390x)
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CPU_CFLAGS="-m64" ;;
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sparc|sun4[cdmuv])
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cpu="sparc"
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CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
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sparc64)
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CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
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CPU_CFLAGS="-m64 -mcx16"
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;;
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esac
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if test -n "$host_arch" && {
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! test -d "$source_path/linux-user/include/host/$host_arch" ||
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! test -d "$source_path/common-user/host/$host_arch"; }; then
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error_exit "linux-user/include/host/$host_arch does not exist." \
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"This is a bug in the configure script, please report it."
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fi
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if test -n "$linux_arch" && ! test -d "$source_path/linux-headers/asm-$linux_arch"; then
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error_exit "linux-headers/asm-$linux_arch does not exist." \
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"This is a bug in the configure script, please report it."
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fi
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check_py_version() {
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# We require python >= 3.7.
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# NB: a True python conditional creates a non-zero return code (Failure)
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@ -812,7 +872,7 @@ default_target_list=""
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mak_wilds=""
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if [ "$linux_user" != no ]; then
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if [ "$targetos" = linux ] && [ -d "$source_path/linux-user/include/host/$host_arch" ]; then
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if [ "$targetos" = linux ] && [ -n "$host_arch" ]; then
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linux_user=yes
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elif [ "$linux_user" = yes ]; then
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error_exit "linux-user not supported on this architecture"
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@ -1717,40 +1777,9 @@ echo "PKG_CONFIG=${pkg_config}" >> $config_host_mak
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echo "CC=$cc" >> $config_host_mak
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echo "EXESUF=$EXESUF" >> $config_host_mak
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# use included Linux headers
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if test "$linux" = "yes" ; then
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mkdir -p linux-headers
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case "$cpu" in
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i386|x86_64)
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linux_arch=x86
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;;
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ppc|ppc64)
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linux_arch=powerpc
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;;
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s390x)
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linux_arch=s390
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;;
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aarch64)
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linux_arch=arm64
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;;
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loongarch*)
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linux_arch=loongarch
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;;
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mips64)
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linux_arch=mips
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;;
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riscv32|riscv64)
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linux_arch=riscv
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;;
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*)
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# For most CPUs the kernel architecture name and QEMU CPU name match.
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linux_arch="$cpu"
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;;
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esac
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# For non-KVM architectures we will not have asm headers
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if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
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symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
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fi
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# use included Linux headers for KVM architectures
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if test "$linux" = "yes" && test -n "$linux_arch"; then
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symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
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fi
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for target in $target_list; do
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