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authorJoseph Myers <joseph@codesourcery.com>2018-12-21 17:53:40 +0000
committerJoseph Myers <joseph@codesourcery.com>2018-12-21 17:53:40 +0000
commit192963be49678b48f60218f1f794991cdd9fe472 (patch)
treede9988c14e213591d5cf2a1b97092454516b6d22 /soft-fp/fixunstfti.c
parentc0e82f117357a941e4d40fcc08babbd6a3c3a1b5 (diff)
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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.
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