[LLVMdev] Building uclibc ...

Dound dound07 at gmail.com
Wed Sep 12 12:53:24 PDT 2007


I am trying compile a libc with llvm (currently uclibc).  I am able to
compile uclibc by changing the Rules.mak to use llvm-gcc, llvm-ar, llvm-ad,
and not using strip.  (I also use the --emit-llvm flag for llvm-gcc).  When
I run llvm-nm on libc.a (or try to use libc.a) I run into problems.  For
example, strlen is not defined -- llvm-nm shows that strlen.os has
__GI_strlen while if I compile with the "normal" tools (gcc, ar, ...)
strlen.os has __GI_strlen as well as strlen listed (both have the symbol
value 00000000).

Any ideas why the archive I create with llvm doesn't define the strlen (and
most other) symbols but does define the __GI_strlen?

I'm sure it is obvious by now, but I am pretty new to LLVM -- thanks in
advance for your help and time!

~ David

PS.  Also, out of curiosity, was someone able to successfully compile all or
part of glibc?  I saw it was on the open projects page a few years ago
(thanks to the old CVS data) but could not find the revision in which it was
removed from that list.  I suspect that because it was removed, perhaps
someone else has figured it out and I could see what they did and try to
compile it myself?
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