http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46760
--- Comment #4 from Dave Korn <davek at gcc dot gnu.org> 2010-12-02 07:14:34
UTC ---
With my patch we no longer get the undefined symbols building lto-wrapper,
but instead later on we hit this problem:
------------------------------------------------------------------------------
[ . . . ]
/home/davek/gcc/obj-gold/./prev-gcc/xgcc -B/home/davek/gcc/obj-gold/./prev-gcc/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/lib/ -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/include -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/sys-include -g -O2
-flto=jobserver -fuse-linker-plugin -frandom-seed=1 -fprofile-use -DIN_GCC -W
-Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H -DGENERATOR_FILE -o build/genchecksum \
build/genchecksum.o .././libiberty/libiberty.a
lto1: sorry, unimplemented: combining units with different profiles is not
supported
lto1: internal compiler error: in lto_file_decl_data_get_fn_decl, at
lto-streamer.h:1075
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: /home/davek/gcc/obj-gold/./prev-gcc/xgcc returned 1 exit status
gold: fatal error: lto-wrapper failed
collect2: ld returned 1 exit status
make[3]: *** [build/genchecksum] Error 1
make[3]: *** Waiting for unfinished jobs....
rm gfdl.pod cpp.pod gfortran.pod gcov.pod fsf-funding.pod gcc.pod
make[3]: Leaving directory `/home/davek/gcc/obj-gold/gcc'
make[2]: *** [all-stagefeedback-gcc] Error 2
make[2]: Leaving directory `/home/davek/gcc/obj-gold'
make[1]: *** [stagefeedback-bubble] Error 2
make[1]: Leaving directory `/home/davek/gcc/obj-gold'
make: *** [profiledbootstrap] Error 2
------------------------------------------------------------------------------
As far as I can see though, everything relevant was compiled with -fprofile-use
in effect:
------------------------------------------------------------------------------
Configuring stage feedback in ./libiberty
[ . . . ]
/home/davek/gcc/obj-gold/./prev-gcc/xgcc -B/home/davek/gcc/obj-gold/./prev-gcc/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/lib/ -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/include -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/sys-include -c -DHAVE_CONFIG_H -g
-O2 -flto=jobserver -fuse-linker-plugin -frandom-seed=1 -fprofile-use -I.
-I/n/10/davek/gcc/gcc/libiberty/../include -W -Wall -Wwrite-strings
-Wc++-compat -Wstrict-prototypes -pedantic /n/10/davek/gcc/gcc/libiberty/md5.c
-o md5.o
[ . . . ]
/home/davek/gcc/obj-gold/./prev-gcc/xgcc -B/home/davek/gcc/obj-gold/./prev-gcc/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/lib/ -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/include -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/sys-include -c -DHAVE_CONFIG_H -g
-O2 -flto=jobserver -fuse-linker-plugin -frandom-seed=1 -fprofile-use -I.
-I/n/10/davek/gcc/gcc/libiberty/../include -W -Wall -Wwrite-strings
-Wc++-compat -Wstrict-prototypes -pedantic
/n/10/davek/gcc/gcc/libiberty/fopen_unlocked.c -o fopen_unlocked.o
[ . . . ]
/home/davek/gcc/obj-gold/./prev-gcc/xgcc -B/home/davek/gcc/obj-gold/./prev-gcc/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/lib/ -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/include -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/sys-include -c -DHAVE_CONFIG_H -g
-O2 -flto=jobserver -fuse-linker-plugin -frandom-seed=1 -fprofile-use -I.
-I/n/10/davek/gcc/gcc/libiberty/../include -W -Wall -Wwrite-strings
-Wc++-compat -Wstrict-prototypes -pedantic
/n/10/davek/gcc/gcc/libiberty/xstrerror.c -o xstrerror.o
[ . . . ]
/home/davek/gcc/obj-gold/./prev-gcc/xgcc -B/home/davek/gcc/obj-gold/./prev-gcc/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/bin/
-B/n/10/davek/gcc/x86_64-unknown-linux-gnu/lib/ -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/include -isystem
/n/10/davek/gcc/x86_64-unknown-linux-gnu/sys-include -c -g -O2
-flto=jobserver -fuse-linker-plugin -frandom-seed=1 -fprofile-use -DIN_GCC -W
-Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I/n/10/davek/gcc/gcc/gcc
-I/n/10/davek/gcc/gcc/gcc/build -I/n/10/davek/gcc/gcc/gcc/../include
-I/n/10/davek/gcc/gcc/gcc/../libcpp/include -I/opt/cfarm/gmp-4.2.4/include
-I/opt/cfarm/mpfr-2.4.1/include -I/opt/cfarm/mpc-0.8/include
-I/n/10/davek/gcc/gcc/gcc/../libdecnumber
-I/n/10/davek/gcc/gcc/gcc/../libdecnumber/bid -I../libdecnumber \
-o build/genchecksum.o /n/10/davek/gcc/gcc/gcc/genchecksum.c
[ . . . ]
------------------------------------------------------------------------------
... but none the less input_profile_summary complains when it gets to the first
libiberty input IR object file.
