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måndag 9 oktober 2017 kl. 22:58:22 CEST skrev Andreas K. Huettel: |
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> ===================================== |
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> Title: New 17.0 profiles in the Gentoo repository |
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> Author: Andreas K. Hüttel <dilfridge@g.o> |
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> Posted: xxxxxxx |
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> Revision: 1 |
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> News-Item-Format: 2.0 |
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> Display-If-Installed: >=sys-devel/gcc-6.4.0 |
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> |
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> We have just added a new set of profiles with release version 17.0 |
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> to the Gentoo repository. These bring tree changes: |
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> 1) The default C++ language version for applications is now C++14. |
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> This change is mostly relevant to Gentoo developers. It also |
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> means, however, that compilers earlier than GCC 6 are masked |
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> and not supported for use as a system compiler anymore. Feel |
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> free to unmask them if you need them for specific applications. |
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> 2) Where supported, GCC will now build position-independent |
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> executables (PIE) by default. This improves the overall |
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> security fingerprint. The switch from non-PIE to PIE binaries, |
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> however, requires some steps by users, as detailed below. |
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> |
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3) Hardened profiles will be moved to the 17.0 profile as sub profile. |
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|
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> Please consider switching from your current 13.0 profile to the |
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> corresponding 17.0 profile soon after GCC-6.4.0 has been |
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> stabilized on your architecture. The 13.0 profiles will be deprecated |
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> and removed in the near future. |
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> |
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> Switching involves the following steps: |
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> If not already done, |
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> * Use gcc-config to select gcc-6.4.0 or later as system compiler |
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> * Re-source /etc/profile: |
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> . /etc/profile |
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> * Re-emerge libtool |
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> Then, |
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> * Select the new profile with eselect |
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> * Re-emerge, in this sequence, gcc, binutils, and glibc |
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> emerge -1 sys-devel/gcc:6.4.0 |
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> emerge -1 sys-devel/binutils |
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> emerge -1 sys-libs/glibc |
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> * Rebuild your entire system |
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> emerge -e world |
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> |
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> If you do not follow these steps you may get spurious build |
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> failures when the linker tries unsuccessfully to combine non-PIE |
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> and PIE code. |
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> ===================================== |
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