Enable clang build and no-pch build on Linux

build/jenkins/dockerfiles/clang11.Dockerfile

@@ -0,0 +1,11 @@
+FROM buster-base:latest
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG DEBCONF_NOWARNINGS="yes"
+RUN apt-get update && apt-get install -qqy llvm-11 clang-11 lld-11 libclang-11-dev --no-install-recommends
+
+USER builder
+
+ENV CC clang-11
+ENV CXX clang++-11
+ENV LDFLAGS -fuse-ld=lld-11

build/jenkins/dockerfiles/clang8.Dockerfile

@@ -1,12 +0,0 @@
-FROM buster-base:latest
-
-ARG DEBIAN_FRONTEND=noninteractive
-ARG DEBCONF_NOWARNINGS="yes"
-RUN echo "deb https://deb.debian.org/debian buster-backports main" > /etc/apt/sources.list.d/backports.list
-RUN apt-get update && apt-get install -qqy llvm-8 clang-8 lld-8 libclang-8-dev --no-install-recommends
-
-USER builder
-
-ENV CC clang-8
-ENV CXX clang++-8
-ENV LDFLAGS -fuse-ld=lld-8

build/jenkins/pipelines/linux.Jenkinsfile

@@ -39,11 +39,11 @@ pipeline {
 				axes {
 					axis {
 						name 'JENKINS_COMPILER'
-						values 'gcc7' //, 'gcc14', 'clang8', 'clang18'
+						values 'gcc7', 'clang11' //, 'gcc14', 'clang18'
 					}
 					axis {
 						name 'JENKINS_PCH'
-						values 'pch' //, 'no-pch'
+						values 'pch', 'no-pch'
 					}
 				}