Gcc-4.9.0 trunk revision 208516 cannot compile openssh package with -flto

[David Kredba]

Hello,
Could I please ask you for help?

I opened a case in GCC Bugzilla and got reply that -fpie have to be
used to get it compiled.

Now it fails for me with:

x86_64-pc-linux-gnu-gcc -o ssh ssh.o readconf.o clientloop.o sshtty.o
sshconnect.o sshconnect1.o sshconnect2.o mux.o roaming_common.o
roaming_client.o -L. -Lopenbsd-compat/ -flto=4 -fuse-linker-plugin
-Wl,--as-needed -Wl,-O2 -Wl,-flto -O2 -ggdb -pipe -march=native
-mtune=native -mno-3dnow -mno-sse4.2 -mno-avx -Wl,-z,relro -Wl,-z,now
-Wl,-z,noexecstack -fstack-protector-strong -flto=4
-fuse-linker-plugin -Wl,--as-needed -Wl,-O2 -Wl,-flto -O2 -ggdb -pipe
-march=native -mtune=native -mno-3dnow -mno-sse4.2 -mno-avx -pie -lssh
-lopenbsd-compat  -lssl -lcrypto  -ldl -lutil -lz -lnsl  -lcrypt
-lresolv -lpthread
umac.c:1193:3: warning: type of 'umac_ctx' does not match original declaration
 } umac_ctx;
   ^
./umac.c:1193:3: note: previously declared here
 } umac_ctx;
   ^
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.0-alpha20140311/../../../../x86_64-pc-linux-gnu/bin/ld:
/var/tmp/portage/net-misc/openssh-6.5_p1-r1/temp/ccMU2kiP.ltrans0.ltrans.o:
relocation R_X86_64_32 against `.rodata.str1.8' can not be used when
making a shared object; recompile with -fPIC
/var/tmp/portage/net-misc/openssh-6.5_p1-r1/temp/ccMU2kiP.ltrans0.ltrans.o:
error adding symbols: Bad value
collect2: error: ld returned 1 exit status
Makefile:150: recipe for target 'ssh' failed
make: *** [ssh] Error 1
 ^[[31;01m*^[[0m ERROR: net-misc/openssh-6.5_p1-r1::gentoo failed
(compile phase):
 ^[[31;01m*^[[0m   emake failed


gcc -v
Using built-in specs.
COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.9.0-alpha20140311/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.9.0-alpha20140311/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20140311/work/gcc-4.9-20140311/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.9.0-alpha20140311
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.0-alpha20140311/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20140311
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20140311/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20140311/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.0-alpha20140311/include/g++-v4
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20140311/python
--enable-languages=c,c++,java,go,objc,obj-c++,fortran,ada
--enable-obsolete --disable-werror --with-system-zlib --enable-nls
--without-included-gettext --enable-checking=release
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo
4.9.0_alpha20140311' --enable-libstdcxx-time --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-multilib --disable-altivec --disable-fixed-point
--enable-targets=all --enable-java-awt=gtk --enable-libgomp
--enable-lto --with-cloog --disable-isl-version-check
Thread model: posix
gcc version 4.9.0-alpha20140311 20140312 (experimental) [trunk
revision 208516] (Gentoo 4.9.0_alpha20140311)

I am attaching config.log and build.log, both gzipped.

Can this be checked by configure? Like if -flto* found then to use -fpie too?

Thank you in advance.

Best regards, David.