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| author | John <jpsinthemix@verizon.net> | 2014-06-04 17:45:42 +0200 |
|---|---|---|
| committer | Kay Sievers <kay@vrfy.org> | 2014-06-04 17:47:20 +0200 |
| commit | 235c6e628199221b7885f159367614b7105547cf (patch) | |
| tree | e45f7e1eaf03a2a08409e756a56965217d10f177 /docs | |
| parent | c221efb2de9a9d8500c0c6baf943bff0d8f87e7f (diff) | |
build-sys: accommodate gcc-4.9.0 link-time optimization (LTO) changes
systemd fails to build (symbols not found/resolved during cgls link step)
under gcc-4.9.0 due to link-time optimization (lto) changes, in particular
from gcc-4.9.0/NEWS:
+ When using a linker plugin, compiling with the -flto option
now generates slim objects files (.o) which only contain
intermediate language representation for LTO. Use
-ffat-lto-objects to create files which contain additionally
the object code. To generate static libraries suitable for LTO
processing, use gcc-ar and gcc-ranlib; to list symbols from a
slim object file use gcc-nm. (Requires that ar, ranlib and nm
have been compiled with plugin support.)
Both -flto and -ffat-lto-objects are now needed when building and linking
against static libs w/LTO.
Diffstat (limited to 'docs')
0 files changed, 0 insertions, 0 deletions