http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46760
Summary: LTO doesn't work with FDO
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: hjl.to...@gmail.com
When gcc is configured with --with-build-config=bootstrap-lto,
I got
make profiledbootstrap -j8
...
/tmp/ccFYqcB1.ltrans0.ltrans.o: In function `pex_unix_exec_child.3021':
/export/gnu/import/git/gcc/libiberty/pex-unix.c:669: undefined reference to
`__gcov_execvp'
/export/gnu/import/git/gcc/libiberty/pex-unix.c:674: undefined reference to
`__gcov_execv'
collect2: ld returned 1 exit status
make[4]: *** [lto-wrapper] Error 1
make[4]: *** Waiting for unfinished jobs....
rm cpp.pod gcov.pod gfdl.pod gcc.pod fsf-funding.pod
make[4]: Leaving directory `/export/build/gnu/gcc-lto/build-x86_64-linux/gcc'
make[3]: *** [all-stageprofile-gcc] Error 2
make[3]: Leaving directory `/export/build/gnu/gcc-lto/build-x86_64-linux'
make[2]: *** [stageprofile-bubble] Error 2
make[2]: Leaving directory `/export/build/gnu/gcc-lto/build-x86_64-linux'
make[1]: *** [profiledbootstrap] Error 2
make[1]: Leaving directory `/export/build/gnu/gcc-lto/build-x86_64-linux'
5005.95user 127.48system 12:19.47elapsed 694%CPU (0avgtext+0avgdata
1395712maxresident)k
109864inputs+6981752outputs (5major+52176484minor)pagefaults 0swaps
make: *** [profiledbootstrap] Error 2
