Re: LTCG causes unnecessary lib requirement
TheClassic wrote:
Its not a static library dependency. I'm using dlls, but the lib file
for each dependency is needed during linking. The library requirement
does disappear when /LTCG is not used.
Interesting. Perhaps some of your dead code references the library, and
LTCG wants to know whether it has AST information for that library code (for
inlining and further optimization) before it determines it is unreachable.
On Oct 20, 9:23 am, "Ben Voigt [C++ MVP]" <r...@nospam.nospam> wrote:
TheClassic wrote:
I'm testing whole program optimization using link-time code
generation on a very large solution. I've run across two projects
so far that when linking now report unresolved external symbols. If
I include the lib file for the symbol, it links. Opening the dll in
"depends" shows that the library is not a dependency. Any ideas why
LTCG is causing an
depends has no knowledge of static libraries
unncessary dependency at link time, or how to resolve it without add
the library to the list of includes?
A better test is whether the requirement for that library
dissappears when /LTCG is not used.
Possibly related: I read that LTCG is not compatible with
precompiled headers which we have been using, but I haven't turned
off their use. I assume they automatically aren't used with LTCG?-
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