package.mask: Mask old GCC versions (< 4.9)

diff --git a/profiles/package.mask b/profiles/package.mask
index 2e5b76bc24981b73bb8a340754e24fc851f6ae36..55efc5628ffac95754a2f1cfad9088383d29812c 100644 (file)
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -29,6 +29,17 @@
 
 #--- END OF EXAMPLES ---
 
+# Michał Górny <mgorny@gentoo.org>, Andreas K. Hüttel <dilfridge@gentoo.org>,
+# Matthias Maier <tamiko@gentoo.org> (21 May 2017)
+# Those old versions of GCC are no longer really supported and are not
+# suitable for use as a system-wide compiler. Using them can result
+# in build failures (and possible breakage) for many packages.
+#
+# If you still use one of these as your system compiler, please upgrade
+# and switch the compiler ASAP. If you need them for a specific (isolated)
+# use case, feel free to unmask them on your system.
+<sys-devel/gcc-4.9
+
 # Michał Górny <mgorny@gentoo.org> (20 May 2017)
 # Old versions of CUDA and their reverse dependencies. They do not
 # support GCC 4.9+, and are really old.