--- Comment #10 from d dot g dot gorbachev at gmail dot com 2010-01-15
11:02 ---
Created an attachment (id=19613)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19613&action=view)
4. Configured with --disable-shared, linking with a static libgcc (with
-static).
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--- Comment #9 from d dot g dot gorbachev at gmail dot com 2010-01-15
11:02 ---
Created an attachment (id=19612)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19612&action=view)
3. Configured with --disable-shared, linking with a static libgcc.
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--- Comment #8 from d dot g dot gorbachev at gmail dot com 2010-01-15
11:02 ---
Created an attachment (id=19611)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19611&action=view)
2. Configured w/o --disable-shared, linking with a static libgcc (with
-static).
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--- Comment #7 from d dot g dot gorbachev at gmail dot com 2010-01-15
11:01 ---
Created an attachment (id=19610)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19610&action=view)
1. Configured w/o --disable-shared, linking with a shared libgcc.
Output of gcc -v
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--- Comment #6 from hjl dot tools at gmail dot com 2010-01-15 04:26 ---
I got
[...@gnu-6 gold-2]$ /export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc -B./
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/../lto-plugin/.libs/ -flto
-fuse-linker
--- Comment #5 from espindola at gcc dot gnu dot org 2010-01-15 03:54
---
Note that
-plugin-opt=-pass-through=/foo/bar/libgcc.a
is missing in the linker invocation.
That is the problem. When BUG is not defined, the undefined reference is
visible early on. You can check that with
GNUTA
--- Comment #4 from hjl dot tools at gmail dot com 2010-01-15 03:41 ---
Works for me:
[...@gnu-6 gold-2]$ vi pr42690.c
[...@gnu-6 gold-2]$ cat pr42690.c
int f(long long a, long long b)
{
#ifdef BUG
return (int) (a / b);
#else
return (int) __divdi3(a, b);
#endif
}
int main(void)
--- Comment #3 from d dot g dot gorbachev at gmail dot com 2010-01-14
22:15 ---
> Is the undefined reference to libgcc? Is it being linked statically?
Yes. In both cases (with and without -DBUG), the ld command line is
/usr/local/bin/ld -plugin
/usr/local/libexec/gcc/i686-pc-linux-gnu
--- Comment #2 from espindola at gcc dot gnu dot org 2010-01-12 16:29
---
Is the undefined reference to libgcc? Is it being linked statically? When
linking libgcc statically the driver has to pass
-plugin-opt=-pass-through=/foo/bar/libgcc.a to ld. This is done in gcc.c:
%{static|st
--- Comment #1 from d dot g dot gorbachev at gmail dot com 2010-01-11
15:25 ---
Created an attachment (id=19541)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19541&action=view)
testcase
GCC 4.5.0 20100107.
gcc -flto -fuse-linker-plugin pr42690.c -DBUG
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