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