Update ci.yml

Author: mcbarton

.github/workflows/ci.yml

@@ -637,6 +637,7 @@ jobs:
                         -DCLANG_ENABLE_STATIC_ANALYZER=OFF \
                         -DCLANG_ENABLE_ARCMT=OFF \
                         -DCLANG_ENABLE_BOOTSTRAP=OFF \
+                        -DCMAKE_CXX_FLAGS="-Dwait4=__syscall_wait4"  \
                          ../llvm
           emmake make clang -j ${{ env.ncpus }}
           emmake make  cling -j ${{ env.ncpus }}
@@ -660,6 +661,7 @@ jobs:
                         -DCLANG_ENABLE_STATIC_ANALYZER=OFF \
                         -DCLANG_ENABLE_ARCMT=OFF \
                         -DCLANG_ENABLE_BOOTSTRAP=OFF \
+                        -DCMAKE_CXX_FLAGS="-Dwait4=__syscall_wait4"  \
                         ../llvm
           emmake make clang -j ${{ env.ncpus }}
           emmake make clang-repl -j ${{ env.ncpus }}