x86: 0.892
architecture: 0.878
user-level: 0.865
graphic: 0.823
performance: 0.821
socket: 0.786
kernel: 0.775
arm: 0.773
hypervisor: 0.767
device: 0.766
ppc: 0.760
PID: 0.735
files: 0.723
mistranslation: 0.704
peripherals: 0.691
debug: 0.686
boot: 0.669
network: 0.658
risc-v: 0.651
TCG: 0.616
i386: 0.610
register: 0.587
semantic: 0.582
permissions: 0.580
VMM: 0.571
vnc: 0.569
KVM: 0.501
assembly: 0.385
virtual: 0.368
--------------------
x86: 0.953
files: 0.059
debug: 0.036
TCG: 0.031
PID: 0.012
hypervisor: 0.012
semantic: 0.011
virtual: 0.010
register: 0.010
user-level: 0.007
kernel: 0.006
VMM: 0.004
boot: 0.003
device: 0.003
network: 0.003
architecture: 0.003
KVM: 0.002
performance: 0.002
assembly: 0.002
permissions: 0.002
vnc: 0.001
socket: 0.001
graphic: 0.001
mistranslation: 0.001
peripherals: 0.001
i386: 0.001
risc-v: 0.001
arm: 0.001
ppc: 0.000

qemu --static user build fails with fedora rawhide glibc-2.30.9000

Building qemu latest git 654efcb511d on fedora rawhide fails with this configure line:

./configure \
	--static \
	--disable-system \
	--enable-linux-user \
	--disable-werror \
	--disable-tools \
	--disable-capstone

make fails with:

/usr/bin/ld: linux-user/syscall.o: in function `do_syscall1':
/root/qemu.git/linux-user/syscall.c:7769: undefined reference to `stime'
collect2: error: ld returned 1 exit status

Seems related to this glibc change: https://sourceware.org/git/?p=glibc.git;a=commit;h=12cbde1dae6fa4a9a792b64564c7e0debf7544cc

...

+* The obsolete function stime is no longer available to newly linked
+  binaries and it has been removed from <time.h> header.  This function
+  has been deprecated in favor of clock_settime.
+

# rpm -q glibc
glibc-2.30.9000-17.fc32.x86_64


FWIW there's some other messages but I don't think they are fatal:

/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/libglib-2.0.a(gutils.c.o): in function `g_get_user_database_entry':
(.text+0x267): warning: Using 'getpwuid' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: (.text+0xe0): warning: Using 'getpwnam_r' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: (.text+0x11e): warning: Using 'getpwuid_r' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking


Also, --disable-capstone is required to avoid this error, but it is pre-existing, not sure if it's a bug, if so I can file a separate one:

  LINK    aarch64-linux-user/qemu-aarch64
/usr/bin/ld: cannot find -lcapstone
collect2: error: ld returned 1 exit status

We use stime() to implement the target stime syscall. We should probably switch to using clock_settime(CLOCK_REALTIME, ...) instead, as that's what glibc uses internally now to implement its stime():

https://sourceware.org/git/?p=glibc.git;a=blob;f=time/stime.c;h=6ea3b6dcc1a393b57b69ca24fbfe8023d9095837;hb=12cbde1dae6fa4a9a792b64564c7e0debf7544cc


Fixed by 0f1f2d4596ae ("linux-user: remove host stime() syscall")