diff --git a/root.sh b/root.sh
index 787a165249..49bb316351 100644
--- a/root.sh
+++ b/root.sh
@@ -89,6 +89,8 @@ case $ARCHITECTURE in
     [[ ! $GSL_ROOT ]] && GSL_ROOT=$(brew --prefix gsl)
     [[ ! $OPENSSL_ROOT ]] && SYS_OPENSSL_ROOT=$(brew --prefix openssl@3)
     [[ ! $LIBPNG_ROOT ]] && LIBPNG_ROOT=$(brew --prefix libpng)
+    [[ ! $LZMA_ROOT ]] && LZMA_ROOT=$(brew --prefix xz)
+    EXTRA_CMAKE_CXX_FLAGS="-Wno-vla-extension"
   ;;
 esac
 
@@ -141,6 +143,7 @@ CMAKE_GENERATOR=${CMAKE_GENERATOR:-Ninja}
 cmake $SOURCEDIR                                                                       \
       ${CMAKE_GENERATOR:+-G "$CMAKE_GENERATOR"}                                        \
       -DCMAKE_BUILD_TYPE=$CMAKE_BUILD_TYPE                                             \
+      ${EXTRA_CMAKE_CXX_FLAGS:+-DCMAKE_CXX_FLAGS="${EXTRA_CMAKE_CXX_FLAGS}"}           \
       -DCMAKE_INSTALL_PREFIX=$INSTALLROOT                                              \
       -Dalien=OFF                                                                      \
       ${CMAKE_CXX_STANDARD:+-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}}                \
@@ -170,6 +173,8 @@ cmake $SOURCEDIR
       ${LIBPNG_ROOT:+-DPNG_LIBRARY="${LIBPNG_ROOT}/lib/libpng.${SONAME}"}              \
       ${PROTOBUF_REVISION:+-DProtobuf_DIR=${PROTOBUF_ROOT}}                            \
       ${ZLIB_ROOT:+-DZLIB_ROOT=${ZLIB_ROOT}}                                           \
+      ${LZMA_ROOT:+-DLIBLZMA_INCLUDE_DIR=${LZMA_ROOT}/include}                       \
+      ${LZMA_ROOT:+-DLIBLZMA_LIBRARY=${LZMA_ROOT}/lib/liblzma.${SONAME}}              \
       ${FFTW3_ROOT:+-DFFTW_DIR=${FFTW3_ROOT}}                                          \
       ${NLOHMANN_JSON_ROOT:+nlohmann_json_DIR=${NLOHMANN_JSON_ROOT}}                   \
       -Dfftw3=ON                                                                       \
@@ -188,6 +193,7 @@ cmake $SOURCEDIR
       -Dgviz=OFF                                                                       \
       -Dbuiltin_davix=OFF                                                              \
       -Dbuiltin_fftw3=OFF                                                              \
+      -Dbuiltin_lzma=OFF                                                               \
       -Dtmva-sofie=ON                                                                  \
       -Dtmva-gpu=OFF                                                                   \
       -Ddavix=OFF                                                                      \