From 192963be49678b48f60218f1f794991cdd9fe472 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Fri, 21 Dec 2018 17:53:40 +0000 Subject: Require GCC 5 or later to build glibc (bug 23993). We know that building glibc with GCC 4.9 is broken on various platforms (bug 23993). As it's more than a year since we last increased the minimum GCC version to build glibc, this patch changes the requirement to be GCC 5 or later (indeed, based on 4.9 having been required for building 2.26, it would be consistent in terms of timing to require GCC 6 or later from the 2.30 release onwards). It deliberately just updates the configure test and corresponding documentation, leaving removal of no-longer-needed __GNUC_PREREQ tests for a separate patch. In the NEWS entry, the requirement for a newer GCC version for powerpc64le is reiterated (as in the entry for the 4.9 requirement in 2.26) to avoid suggesting the version requirement there has gone down. (If that version goes up further as part of support for binary128 long double, of course the wording would change at that time.) Tested for x86_64. [BZ #23993] * configure.ac (libc_cv_compiler_ok): Require GCC 5 or later. * configure: Regenerated. * manual/install.texi (Tools for Compilation): Update minimum GCC version. * INSTALL: Regenerated. --- INSTALL | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'INSTALL') diff --git a/INSTALL b/INSTALL index 268b7d63fa..672eb40640 100644 --- a/INSTALL +++ b/INSTALL @@ -459,9 +459,9 @@ build the GNU C Library: As of relase time, GNU 'make' 4.2.1 is the newest verified to work to build the GNU C Library. - * GCC 4.9 or newer + * GCC 5 or newer - GCC 4.9 or higher is required. In general it is recommended to use + GCC 5 or higher is required. In general it is recommended to use the newest version of the compiler that is known to work for building the GNU C Library, as newer compilers usually produce better code. As of release time, GCC 8.1.1 is the newest compiler -- cgit 1.4.1