diff -Nru llvm-toolchain-12-12.0.1/debian/changelog llvm-toolchain-12-12.0.1/debian/changelog
--- llvm-toolchain-12-12.0.1/debian/changelog	2022-02-03 19:30:03.000000000 +0000
+++ llvm-toolchain-12-12.0.1/debian/changelog	2022-02-04 17:19:26.000000000 +0000
@@ -1,3 +1,11 @@
+llvm-toolchain-12 (1:12.0.1-19ubuntu3) jammy; urgency=medium
+
+  * d/rules: Adjust d/llvm-X.Y-dev.install accordingly when building on
+    i386 (i.e., don't install libRemoteIndex{ServiceProto,Proto}.a in such
+    case).
+
+ -- Sergio Durigan Junior <sergio.durigan@canonical.com>  Fri, 04 Feb 2022 12:19:26 -0500
+
 llvm-toolchain-12 (1:12.0.1-19ubuntu2) jammy; urgency=medium
 
   * d/rules: Don't remove libRemoteIndex{ServiceProto,Proto}.a.  These are
diff -Nru llvm-toolchain-12-12.0.1/debian/control llvm-toolchain-12-12.0.1/debian/control
--- llvm-toolchain-12-12.0.1/debian/control	2022-02-03 07:39:13.000000000 +0000
+++ llvm-toolchain-12-12.0.1/debian/control	2022-02-04 17:19:26.000000000 +0000
@@ -2,7 +2,8 @@
 Section: devel
 Priority: optional
 Rules-Requires-Root: no
-Maintainer: LLVM Packaging Team <pkg-llvm-team@lists.alioth.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: LLVM Packaging Team <pkg-llvm-team@lists.alioth.debian.org>
 Uploaders: Sylvestre Ledru <sylvestre@debian.org>, Gianfranco Costamagna <locutusofborg@debian.org>
 Build-Depends: debhelper (>= 9.0), cmake, ninja-build,
     chrpath, texinfo, sharutils,
diff -Nru llvm-toolchain-12-12.0.1/debian/rules llvm-toolchain-12-12.0.1/debian/rules
--- llvm-toolchain-12-12.0.1/debian/rules	2022-02-03 19:29:38.000000000 +0000
+++ llvm-toolchain-12-12.0.1/debian/rules	2022-02-04 17:19:26.000000000 +0000
@@ -447,6 +447,11 @@
 		sed -i -e "s|#spv\ ||g" debian/libclc-$(LLVM_VERSION).install; \
 	fi
 
+ifeq ($(VENDOR)-$(DEB_HOST_ARCH),Ubuntu-i386)
+	# Ubuntu doesn't build GRPC on i386.
+	sed -i '/^usr\/lib.*libRemoteIndex.*\.a$$/d' debian/llvm-$(LLVM_VERSION)-dev.install
+endif
+
 # Override this two targets. They are trying to manage the .in conversion for me
 override_dh_ocamlinit:
 override_dh_ocamlclean: