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[Qemu-devel] [Bug 1452230] [NEW] Qemu 2.3.0 failes to compile with GCC 5


From: Steffen Hau
Subject: [Qemu-devel] [Bug 1452230] [NEW] Qemu 2.3.0 failes to compile with GCC 5.1.0 and -flto
Date: Wed, 06 May 2015 10:47:26 -0000

Public bug reported:

Compiling Qemu 2.3.0 failes with the following error:

x86_64-pc-linux-gnu-g++ -I/usr/include/pixman-1   -fPIE -DPIE -m64 
-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes 
-Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes 
-fno-strict-aliasing -fno-common  -Wendif-labels -Wmissing-include-dirs 
-Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self 
-Wignored-qualifiers -Wold-style-declaration -Wold-style-definition 
-Wtype-limits -fstack-protector-strong   -I/usr/include/libpng16  
-I/usr/include/libusb-1.0  
-I/home/gentoo/tmp/portage/app-emulation/qemu-2.3.0/work/qemu-2.3.0/tests 
-pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include  -march=native 
-O2 -pipe -ggdb -floop-interchange -floop-strip-mine -floop-block 
-ftree-loop-distribution -fira-loop-pressure -ftree-vectorize 
-ftree-loop-linear -flto=5 -fuse-linker-plugin -Wl,-z,relro -Wl,-z,now -pie 
-m64 -Wl,-O1 -Wl,--as-needed -march=native -O2 -pipe -ggdb -floop-interchange 
-floop-strip-mine -floop-block -ftree-loop-distribution -fira-loop-pressure 
-ftree-vectorize -ftree-loop-linear -flto=5 -fuse-linker-plugin -Wl,-znow 
-Wl,--sort-common -Wl,--hash-style=gnu -Wl,--enable-new-dtags -o qemu-img 
qemu-img.o async.o thread-pool.o nbd.o block.o blockjob.o main-loop.o 
iohandler.o qemu-timer.o aio-posix.o qemu-io-cmds.o qemu-coroutine.o 
qemu-coroutine-lock.o qemu-coroutine-io.o qemu-coroutine-sleep.o 
coroutine-ucontext.o block/raw_bsd.o block/qcow.o block/vdi.o block/vmdk.o 
block/cloop.o block/dmg.o block/bochs.o block/vpc.o block/vvfat.o block/qcow2.o 
block/qcow2-refcount.o block/qcow2-cluster.o block/qcow2-snapshot.o 
block/qcow2-cache.o block/qed.o block/qed-gencb.o block/qed-l2-cache.o 
block/qed-table.o block/qed-cluster.o block/qed-check.o block/vhdx.o 
block/vhdx-endian.o block/vhdx-log.o block/parallels.o block/blkdebug.o 
block/blkverify.o block/block-backend.o block/snapshot.o block/qapi.o 
block/raw-posix.o block/linux-aio.o block/null.o block/mirror.o block/nbd.o 
block/nbd-client.o block/sheepdog.o block/accounting.o block/write-threshold.o 
block/curl.o  libqemuutil.a libqemustub.a   -lz -lbz2 -laio -lcurl -lm 
-lgthread-2.0 -pthread -lglib-2.0   -lz -lrt -lz -lcap-ng -luuid  -lutil
lto1: error: two or more sections for .gnu.lto_fprintf.2f4a95b725db6827
(null):0: confused by earlier errors, bailing out
make[1]: *** 
[/home/gentoo/tmp/portage/app-emulation/qemu-2.3.0/temp/ccEUT6Vq.ltrans11.ltrans.o]
 Error 1
make[1]: *** Waiting for unfinished jobs....
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/5.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: 
fatal error: lto-wrapper failed
collect2: error: ld returned 1 exit status
/home/gentoo/tmp/portage/app-emulation/qemu-2.3.0/work/qemu-2.3.0/rules.mak:122:
 recipe for target 'qemu-img' failed
make: *** [qemu-img] Error 1

I've found an old GCC bugreport with the same error:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52159 (which has been
marked as dup of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59000) . I
was able to reduce the object list to to three .o files which reproduce
the error reliably: qemu-img.o qemu-io-cmds.o block/qapi.o.

Please let me know if you need further information.

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: gcc-5 lto

-- 
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https://bugs.launchpad.net/bugs/1452230

Title:
  Qemu 2.3.0 failes to compile with GCC 5.1.0 and -flto

Status in QEMU:
  New

Bug description:
  Compiling Qemu 2.3.0 failes with the following error:

  x86_64-pc-linux-gnu-g++ -I/usr/include/pixman-1   -fPIE -DPIE -m64 
-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes 
-Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes 
-fno-strict-aliasing -fno-common  -Wendif-labels -Wmissing-include-dirs 
-Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self 
-Wignored-qualifiers -Wold-style-declaration -Wold-style-definition 
-Wtype-limits -fstack-protector-strong   -I/usr/include/libpng16  
-I/usr/include/libusb-1.0  
-I/home/gentoo/tmp/portage/app-emulation/qemu-2.3.0/work/qemu-2.3.0/tests 
-pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include  -march=native 
-O2 -pipe -ggdb -floop-interchange -floop-strip-mine -floop-block 
-ftree-loop-distribution -fira-loop-pressure -ftree-vectorize 
-ftree-loop-linear -flto=5 -fuse-linker-plugin -Wl,-z,relro -Wl,-z,now -pie 
-m64 -Wl,-O1 -Wl,--as-needed -march=native -O2 -pipe -ggdb -floop-interchange 
-floop-strip-mine -floop-block -ftree-loop-distribution -fira-loop-pressure 
-ftree-vectorize -ftree-loop-linear -flto=5 -fuse-linker-plugin -Wl,-znow 
-Wl,--sort-common -Wl,--hash-style=gnu -Wl,--enable-new-dtags -o qemu-img 
qemu-img.o async.o thread-pool.o nbd.o block.o blockjob.o main-loop.o 
iohandler.o qemu-timer.o aio-posix.o qemu-io-cmds.o qemu-coroutine.o 
qemu-coroutine-lock.o qemu-coroutine-io.o qemu-coroutine-sleep.o 
coroutine-ucontext.o block/raw_bsd.o block/qcow.o block/vdi.o block/vmdk.o 
block/cloop.o block/dmg.o block/bochs.o block/vpc.o block/vvfat.o block/qcow2.o 
block/qcow2-refcount.o block/qcow2-cluster.o block/qcow2-snapshot.o 
block/qcow2-cache.o block/qed.o block/qed-gencb.o block/qed-l2-cache.o 
block/qed-table.o block/qed-cluster.o block/qed-check.o block/vhdx.o 
block/vhdx-endian.o block/vhdx-log.o block/parallels.o block/blkdebug.o 
block/blkverify.o block/block-backend.o block/snapshot.o block/qapi.o 
block/raw-posix.o block/linux-aio.o block/null.o block/mirror.o block/nbd.o 
block/nbd-client.o block/sheepdog.o block/accounting.o block/write-threshold.o 
block/curl.o  libqemuutil.a libqemustub.a   -lz -lbz2 -laio -lcurl -lm 
-lgthread-2.0 -pthread -lglib-2.0   -lz -lrt -lz -lcap-ng -luuid  -lutil
  lto1: error: two or more sections for .gnu.lto_fprintf.2f4a95b725db6827
  (null):0: confused by earlier errors, bailing out
  make[1]: *** 
[/home/gentoo/tmp/portage/app-emulation/qemu-2.3.0/temp/ccEUT6Vq.ltrans11.ltrans.o]
 Error 1
  make[1]: *** Waiting for unfinished jobs....
  lto-wrapper: fatal error: make returned 2 exit status
  compilation terminated.
  
/usr/lib/gcc/x86_64-pc-linux-gnu/5.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: 
fatal error: lto-wrapper failed
  collect2: error: ld returned 1 exit status
  
/home/gentoo/tmp/portage/app-emulation/qemu-2.3.0/work/qemu-2.3.0/rules.mak:122:
 recipe for target 'qemu-img' failed
  make: *** [qemu-img] Error 1

  I've found an old GCC bugreport with the same error:
  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52159 (which has been
  marked as dup of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59000) .
  I was able to reduce the object list to to three .o files which
  reproduce the error reliably: qemu-img.o qemu-io-cmds.o block/qapi.o.

  Please let me know if you need further information.

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