Re: [libvirt] libvirt-2.0.0 build error (hidden symbol libvirt_event_poll_update_handle_semaphore)
On Tue, Jun 27, 2017 at 05:34:59PM +0800, longguang.yue wrote:
Hi, all:
i back port a patch which makes qemu depends on util directory.
so i correct its dependency by applying a patch. but another error occur.
the patch is
http://libvirt.org/git/?p=libvirt.git;a=commit;h=57b5e27d3d74f8dbb77ac909...
That's wrong - qemu (and every driver in libvirt) has *always* depended
on the util directory - nothing changed in that respect in this patch.
The patch adds a new method in the util code, and exports that method
to drivers in the normal manner.
the patch fix dependency :
--- libvirt-2.0.0/src/Makefile.am 2016-06-27 22:12:20.523191076 +0800
+++ libvirt-2.0.0-ok/src/Makefile.am 2017-06-22 12:25:17.512000000 +0800
@@ -1362,6 +1362,7 @@
-I$(srcdir)/access \
-I$(srcdir)/conf \
-I$(srcdir)/secret \
+ -I$(srcdir)/util \
$(AM_CFLAGS)
libvirt_driver_qemu_impl_la_LDFLAGS = $(AM_LDFLAGS)
libvirt_driver_qemu_impl_la_LIBADD = $(CAPNG_LIBS) \
@@ -1369,6 +1370,7 @@
$(LIBNL_LIBS) \
$(LIBXML_LIBS) \
libvirt_secret.la \
+ libvirt_util.la \
$(NULL)
libvirt_driver_qemu_impl_la_SOURCES = $(QEMU_DRIVER_SOURCES)
This is just wrong. Any symbols that QEMU uses from the libvirt_util.la
library are already linked into libvirtd and exported to the QEMU driver.
Linking QEMU to libvirt_util.la results in 2 copies the same code being
in-process which is broken.
CCLD qemucapsprobe
/bin/ld: .libs/qemucapsprobe: hidden symbol
`libvirt_event_poll_update_handle_semaphore' in ../src/libvirt_probes.o is referenced
by DSO
/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status
This looks unrelated to the patch you quote above. The patch doesn't
change qemucapsprobe, nor reference that hidden symbol. So I think
this is a pre-existing problem you have with your build and/or code
tree.
Regards,
Daniel
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