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Hi, |
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|
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On Friday 17 December 2010 14:00:16 Thomas Kahle wrote: |
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> Hi, |
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> |
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> On 21:19 Tue 09 Nov , François Bissey wrote: |
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> > > my next migration victim will be mpir, the friendly clone of gmp. The |
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> > > current ebuild is the same in sage-on-gentoo and science. It has this |
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> > > assembler stuff in it that I don't understand. Who did this? What is |
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> > > the latest here, can we remove the fat TODO-banner (or DO it?). |
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> > > |
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> > > Any other hints/objections? (Yes, I know that there is a bump |
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> > > waiting...) |
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> > |
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> > Hi Thomas, |
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> > |
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> > Christopher did it. mpir like gmp suffer from executable stacks. |
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> > There are talk on sage-devel which is very close to mpir upstream |
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> > to take a different approach: using an m4 macro and a linker flag |
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> > to remove them -Wl,-z,noexecstack. |
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> > The motivation to fix this is fedora 14 which doesn't allow executable |
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> > stacks by default. |
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> |
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> The changelog of mpir-2.2 shows: |
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> |
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> -) Enable noexecstack for x86/x86_64 with GCC |
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> |
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> So what should be done to use this in our ebuild. I tried to simply |
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> append -Wl,-z,noexecstack to ldflags, but this did nothing. |
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Mpir's configure scripts looks like its adding "-Wl,-z,noexecstack" if it |
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detects a gcc+x86/amd64 configuration - so I guess noexecstack should work out |
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of the box. If it does not I would consider this as broken. |
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> |
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> Cheers, |
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> Thomas |
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|
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Cheers, |
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|
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Christopher |
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