commit:     b4278e415dca5f4b2f9e7020c141b1cd86b93bea
Author:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
AuthorDate: Wed Jan  7 12:25:59 2026 +0000
Commit:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
CommitDate: Wed Jan  7 12:25:59 2026 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b4278e41

package.use.mask: mask clang useflag for glibc

Signed-off-by: Andreas K. Hüttel <dilfridge <AT> gentoo.org>

 profiles/base/package.use.mask | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/profiles/base/package.use.mask b/profiles/base/package.use.mask
index 52bc7089e211..5667db065c19 100644
--- a/profiles/base/package.use.mask
+++ b/profiles/base/package.use.mask
@@ -6,6 +6,13 @@
 
 # New entries go on top.
 
+# Andreas K. Hüttel <[email protected]> (2026-01-07)
+# Building glibc with clang is highly experimental and only possible and
+# tested in few configurations. Enabling the useflag clang allows free
+# choice of the compiler. By masking this useflag, the ebuild
+# forcibly resets the compiler to gcc.
+sys-libs/glibc clang
+
 # Paul Zander <[email protected]> (2025-12-27)
 # breaks with old in-tree sys-cluster/ampi bug #586746 #830093 #815007
 sci-libs/adolc mpi

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