Add pipeline

.build.yml

@@ -0,0 +1,8 @@
+kind: pipeline
+type: exec
+name: XT Toolchain Pipeline
+
+steps:
+- name: Compile XT Toolchain
+  commands:
+    - sh build-linux.sh

build-linux.sh

@@ -321,6 +321,7 @@ llvm_build_runtime()
             -DCMAKE_SYSTEM_NAME="Windows" \
             -DCOMPILER_RT_DEFAULT_TARGET_ONLY=TRUE \
             -DCOMPILER_RT_USE_BUILTINS_LIBRARY=TRUE \
+            -DSANITIZER_CXX_ABI=libc++ \
             ../lib/builtins
             make -j${CORES}
             mkdir -p ${BINDIR}/lib/clang/${LLVMTAG#*-}/lib/windows