fixes for macos compilation

Author: paxcut

.github/workflows/build.yml

@@ -104,7 +104,7 @@ jobs:
             -DCMAKE_C_COMPILER_LAUNCHER=ccache        \
             -DCMAKE_CXX_COMPILER_LAUNCHER=ccache      \
             -DCMAKE_CXX_FLAGS="-stdlib=libc++"        \
-            -DCMAKE_EXE_LINKER_FLAGS="-stdlib=libc++ -lc++abi " \
+            -DCMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -L$(brew --prefix llvm)/lib -Wl,-rpath,$(brew --prefix llvm)/lib" \
             -DCMAKE_INSTALL_PREFIX="./install"        \
             -G Ninja                                  \
             ..