Shippable CI: Try to suppress linker msges about fixed erratum 843419

shippable.yml

@@ -15,7 +15,7 @@ env:
   matrix:
     - LLVM_VERSION=9.0.0
       HOST_LDC_VERSION=1.14.0
-      EXTRA_CMAKE_FLAGS="-DBUILD_LTO_LIBS=ON -DCMAKE_EXE_LINKER_FLAGS=-static-libstdc++ -DLDC_INSTALL_LTOPLUGIN=ON -DLDC_INSTALL_LLVM_RUNTIME_LIBS=ON -DLDC_INSTALL_LLVM_RUNTIME_LIBS_ARCH=aarch64"
+      EXTRA_CMAKE_FLAGS="-DBUILD_LTO_LIBS=ON \"-DCMAKE_EXE_LINKER_FLAGS=-static-libstdc++ -mfix-cortex-a53-843419\" -DLDC_INSTALL_LTOPLUGIN=ON -DLDC_INSTALL_LLVM_RUNTIME_LIBS=ON -DLDC_INSTALL_LLVM_RUNTIME_LIBS_ARCH=aarch64"
 
 build:
   ci:
@@ -47,13 +47,15 @@ build:
     # Build bootstrap LDC
     - cmake --version
     - ninja --version
+    - export DFLAGS=-L--fix-cortex-a53-843419
     - mkdir bootstrap-ldc
     - cd bootstrap-ldc
     - |
       cmake -G Ninja .. \
         -DCMAKE_BUILD_TYPE=Release \
         -DLLVM_ROOT_DIR=$PWD/../llvm \
         -DD_COMPILER=$PWD/../host-ldc/bin/ldmd2 \
+        -DCMAKE_EXE_LINKER_FLAGS=-mfix-cortex-a53-843419 \
         -DBUILD_SHARED_LIBS=OFF \
         -DCOMPILE_D_MODULES_SEPARATELY=ON \
         -DCOMPILE_ALL_D_FILES_AT_ONCE=OFF
@@ -131,7 +133,7 @@ build:
       make -f posix.mak -j16 install \
         DMD=$PWD/../installed/bin/ldmd2 \
         DMD_DIR=$PWD/../tests/d2 \
-        DFLAGS="-w -de" \
+        DFLAGS="$DFLAGS -w -de" \
         INSTALL_DIR=$PWD
     - cp bin/{rdmd,ddemangle,dustmite} ../installed/bin
     - cd ..