configure: do not set bsd_user/linux_user early

Similar to other optional features, leave the variables empty and compute
the actual value later.  Use the existence of include or source directories
to detect whether an OS or CPU supports respectively bsd-user and linux-user.

For now, BSD user-mode emulation is buildable even on TCI-only
architectures.  This probably will change once safe signals are
brought over from linux-user.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2021-11-09 10:10:41 +01:00
parent 3765068947
commit b915a2f15c

28
configure vendored
View File

@ -320,8 +320,8 @@ linux="no"
solaris="no"
profiler="no"
softmmu="yes"
linux_user="no"
bsd_user="no"
linux_user=""
bsd_user=""
pkgversion=""
pie=""
qom_cast_debug="yes"
@ -538,7 +538,6 @@ gnu/kfreebsd)
;;
freebsd)
bsd="yes"
bsd_user="yes"
make="${MAKE-gmake}"
# needed for kinfo_getvmmap(3) in libutil.h
;;
@ -583,7 +582,6 @@ haiku)
;;
linux)
linux="yes"
linux_user="yes"
vhost_user=${default_feature:-yes}
;;
esac
@ -1259,18 +1257,26 @@ if eval test -z "\${cross_cc_$cpu}"; then
cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
fi
# For user-mode emulation the host arch has to be one we explicitly
# support, even if we're using TCI.
if [ "$ARCH" = "unknown" ]; then
bsd_user="no"
linux_user="no"
fi
default_target_list=""
deprecated_targets_list=ppc64abi32-linux-user
deprecated_features=""
mak_wilds=""
if [ "$linux_user" != no ]; then
if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
linux_user=yes
elif [ "$linux_user" = yes ]; then
error_exit "linux-user not supported on this architecture"
fi
fi
if [ "$bsd_user" != no ]; then
if [ "$bsd_user" = "" ]; then
test $targetos = freebsd && bsd_user=yes
fi
if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
error_exit "bsd-user not supported on this host OS"
fi
fi
if [ "$softmmu" = "yes" ]; then
mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
fi