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    SubjectRe: Compiling with 2.6.25-rc2 with binutils 2.17 fails?
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    On Sunday 17 February 2008 21:09:10 Roland McGrath wrote:
    > > Still trying to track down why, but it works on a toolchain built from
    > > binutils 2.18 and gcc 4.1.3, but not with a toolchain from binutils 2.17
    > > and gcc 4.1.2. And considering where it's failing...
    >
    > I don't think the vdso magic should require so new a binutils. Please try
    > to figure out which of the steps is producing different results between the
    > two tool setups.

    I'm poking at it. Something in my cross compiling setup is driving this bit
    screwy:

    i686-nm arch/x86/vdso/vdso32-sysenter.so.dbg |
    sed -n -e 's/^00*/0/' -e 's/^\([0-9a-fA-F]*\) . \(VDSO[a-zA-Z0-9_]*\)$/ =
    0x;/p' | LC_ALL=C sort > arch/x86/vdso/vdso32-sysenter-syms.lds
    if LC_ALL=C sort -u arch/x86/vdso/vdso32-int80-syms.lds
    arch/x86/vdso/vdso32-sysenter-syms.lds > arch/x86/vdso/.tmp_vdso32-syms.lds
    && if grep -q VDSO32_SYSENTER_RETURN arch/x86/vdso/vdso32-int80-syms.lds;
    then diff -u arch/x86/vdso/.tmp_vdso32-syms.lds
    arch/x86/vdso/vdso32-int80-syms.lds; else sed /VDSO32_SYSENTER_RETURN/d
    arch/x86/vdso/.tmp_vdso32-syms.lds | diff -u -
    arch/x86/vdso/vdso32-int80-syms.lds; fi && if grep -q VDSO32_SYSENTER_RETURN
    arch/x86/vdso/vdso32-sysenter-syms.lds; then diff -u
    arch/x86/vdso/.tmp_vdso32-syms.lds arch/x86/vdso/vdso32-sysenter-syms.lds;
    else sed /VDSO32_SYSENTER_RETURN/d arch/x86/vdso/.tmp_vdso32-syms.lds |
    diff -u - arch/x86/vdso/vdso32-sysenter-syms.lds; fi && : ; then mv -f
    arch/x86/vdso/.tmp_vdso32-syms.lds arch/x86/vdso/vdso32-syms.lds; else rm -f
    arch/x86/vdso/.tmp_vdso32-syms.lds; exit 1; fi
    --- - Sun Feb 17 20:24:03 2008
    +++ arch/x86/vdso/vdso32-int80-syms.lds Sun Feb 17 20:24:03 2008
    @@ -0,0 +1,5 @@
    +VDSO32_PRELINK = 0x0;
    +VDSO32_rt_sigreturn = 0x040c;
    +VDSO32_sigreturn = 0x0400;
    +VDSO32_vsyscall = 0x0414;
    +VDSO32_vsyscall_eh_frame_size = 0x040;
    make[1]: *** [arch/x86/vdso/vdso32-syms.lds] Error 1
    make: *** [arch/x86/vdso] Error 2
    If binutils is involved, it's due to i686-nm...

    I'm still trying to puzzle out the "if thing && thing &&:; then" syntax above.
    Never encountered that one before... A colon? I'll try to bang on it some
    more tomorrow, it's gone 4am on me...

    > Thanks,
    > Roland

    Rob
    --
    "One of my most productive days was throwing away 1000 lines of code."
    - Ken Thompson.


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