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Some comments regarding uclibc: |
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On 22 Jan 2004, Ned Ludd wrote: |
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> pappy, |
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> |
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> I'm CC: peter so he can get a heads up on what we are thinking. |
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> |
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> Attachments included. |
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> |
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> This is also building on your box. |
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> In the screen chroot but it's not in the not in an overlay. |
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> |
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> Also pappy to make Martin happy could you confirm the guard scan takes |
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> place every single time gcc is built. You suggested the idea to him so a |
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> patch to have the ebuild behave the way you said in a previous mail |
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> would be great. The base-system herd wants this so -r5 can be pushed to |
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> stable. I also want see 3.3.2 go stable because it will allow us get |
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> everybody on the same page with basic toolchain pie support. |
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> |
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> ... |
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> * Done with patching |
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> * Applying |
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> gcc331-pp-fixup.patch... [ ok ] |
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> * Applying |
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> protector.dif... [ ok ] |
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> * Applying |
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> gcc-3.3.2-gentoo-branch-update-20031218-pie-ssp.patch... [ ok ] |
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This patch has fixed crt1.o, uclibc works with pie also for crt0.o. One |
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solution would be to patch uclibc so, that it copies crt0.o as crt1.o (as |
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I did with Scrt1.o for the case CTOR_DTOR is not defined), then no change |
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is needed to work with uclibc. I'll check with Erik if he will do the |
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change to uclibc, if not this patch has to be somehow adapted to check for |
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uClibc-config.h file. |
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|
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> * Applying |
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> gcc332-gentoo-branding.patch... [ ok ] |
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> |
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> * This sys-libs/glibc has __guard object and __stack_smash_handler |
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> functions |
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> * scanning the system for binaries with __guard - this may take 5-10 |
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> minutes |
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> * Please do not press ctrl-C or ctrl-Z during this period - it will |
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> continue |
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> |
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> * Scanning system for __guard@GCC symbols... |
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> * Scanning 01 of 10 /lib... |
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> * Scanning 02 of 10 /usr/lib... |
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The ssp_scan is easy to implement for uClibc (check for ld-uClibc.so.0 |
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presence, and check libc.so.0), but how do we know, if uClibc is main |
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libc, should we check first for ld-uClibc.so, then if it is present, |
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check if also libc.so.6 is present, if yes, then glibc is main libc, else |
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uClibc. The check is needed because propolice is an option (yet) in |
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uClibc, so there could be versions not having __guard/__smash... |
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Peter, |
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-- |
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Peter S. Mazinger <ps dot m at gmx dot net> ID: 0xA5F059F2 |
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Key fingerprint = 92A4 31E1 56BC 3D5A 2D08 BB6E C389 975E A5F0 59F2 |
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____________________________________________________________________ |
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Probald ki most! http://www.freestart.hu |
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