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[Bug 1878348] Re: --static build fails in v5.0 (since 5010cec2bc87dafab3


From: Daniel Berrange
Subject: [Bug 1878348] Re: --static build fails in v5.0 (since 5010cec2bc87dafab39b3913c8ca91f88df9c540)
Date: Thu, 14 May 2020 09:55:42 -0000

Semi-officially, QEMU only aims to support static linking with usermode
emulators, not system mode emulators.  I'm not sure we make that clear
anywhere in the docs, or configure script. We should probably print a
warning from configure if using --static in combination with system
emulators, that this is an untested scenario and users are responsible
for figuring out any problems they hit such as missing libraries at link
time.

In particular it is a known limitation that the configure checks for
pre-requisite libraries only validate existence of the shared libraries,
and make no attempt to look for the static variant, and it was decided
not to fix that.

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https://bugs.launchpad.net/bugs/1878348

Title:
  --static build fails in v5.0 (since
  5010cec2bc87dafab39b3913c8ca91f88df9c540)

Status in QEMU:
  New

Bug description:
  Hi,

  Since commit 5010cec2bc87dafab39b3913c8ca91f88df9c540, building qemu
  fails when configured with --static (eg ../configure --target-
  list=x86_64-softmmu,x86_64-linux-user --enable-debug --static).

  On ubuntu 16.04, it fails to find -lffi and -lselinux.

  After I apt-get install libffi-dev libselinux1-dev, the build still fails:
  ../backends/dbus-vmstate.o: In function 
`_nocheck__trace_dbus_vmstate_pre_save':
  /home/christophe.lyon/src/qemu/build-static/backends/trace.h:29: undefined 
reference to `_TRACE_DBUS_VMSTATE_PRE_SAVE_DSTATE'
  ../backends/dbus-vmstate.o: In function 
`_nocheck__trace_dbus_vmstate_post_load':
  /home/christophe.lyon/src/qemu/build-static/backends/trace.h:52: undefined 
reference to `_TRACE_DBUS_VMSTATE_POST_LOAD_DSTATE'
  ../backends/dbus-vmstate.o: In function 
`_nocheck__trace_dbus_vmstate_loading':
  /home/christophe.lyon/src/qemu/build-static/backends/trace.h:75: undefined 
reference to `_TRACE_DBUS_VMSTATE_LOADING_DSTATE'
  ../backends/dbus-vmstate.o: In function `_nocheck__trace_dbus_vmstate_saving':
  /home/christophe.lyon/src/qemu/build-static/backends/trace.h:98: undefined 
reference to `_TRACE_DBUS_VMSTATE_SAVING_DSTATE'
  collect2: error: ld returned 1 exit status

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