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[Bug ld/12320] ld --as-needed links libgcc_s.so.1 unnecessarily on Solar
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From: |
ro at CeBiTec dot Uni-Bielefeld.DE |
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Subject: |
[Bug ld/12320] ld --as-needed links libgcc_s.so.1 unnecessarily on Solaris 11 |
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Date: |
Tue, 15 Feb 2011 12:44:59 +0000 |
http://sourceware.org/bugzilla/show_bug.cgi?id=12320
--- Comment #4 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> 2011-02-15
12:44:52 UTC ---
> --- Comment #3 from Alan Modra <amodra at gmail dot com> 2011-02-15 12:01:45
> UTC ---
> In crt1.o
> 15: 00000000 0 NOTYPE WEAK DEFAULT UND _DYNAMIC
> In libgcc_s.so
> 154: 00018fd0 0 OBJECT GLOBAL DEFAULT ABS _DYNAMIC
>
> libgcc_s.so provides a symbol that is undefined at the time libgcc_s.so is
> linked, and thus libgcc_s.so is marked as needed. So, why does your
> libgcc_s.so export _DYNAMIC (and _GLOBAL_OFFSET_TABLE_)?
Because that's what the Solaris 2 ABI requires for shared objects,
cf. ld/emultempl/solaris2.em (elf_solaris2_before_allocation).
Rainer
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