Remove git submodule LibRI and LibComm

.gitmodules

@@ -1,11 +1,3 @@
-[submodule "deps/LibRI"]
-	path = deps/LibRI
-	url = https://github.com/abacusmodeling/LibRI.git
-	branch = master
-[submodule "deps/LibComm"]
-	path = deps/LibComm
-	url = https://github.com/abacusmodeling/LibComm.git
-	branch = master
 [submodule "deps/libpaw_interface"]
 	path = deps/libpaw_interface
 	url = https://github.com/wenfei-li/libpaw_interface

CMakeLists.txt

@@ -538,13 +538,10 @@ endif()
 if(ENABLE_LIBRI)
   set_if_higher(CMAKE_CXX_STANDARD 14)
   if(LIBRI_DIR)
-    include_directories(${LIBRI_DIR}/include)
-  elseif(GIT_SUBMODULE)
-    git_submodule_update()
-    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/deps/LibRI/include)
   else()
-    message(FATAL_ERROR "Must provide LIBRI_DIR for RI related features.")
+    find_package(LibRI REQUIRED)
   endif()
+  include_directories(${LIBRI_DIR}/include)
   target_link_libraries(${ABACUS_BIN_NAME} ri module_exx_symmetry)
   add_compile_definitions(__EXX EXX_DM=3 EXX_H_COMM=2 TEST_EXX_LCAO=0
                           TEST_EXX_RADIAL=1)
@@ -555,13 +552,10 @@ if(ENABLE_LIBRI OR DEFINED LIBCOMM_DIR)
 endif()
 if(ENABLE_LIBCOMM)
   if(LIBCOMM_DIR)
-    include_directories(${LIBCOMM_DIR}/include)
-  elseif(GIT_SUBMODULE)
-    git_submodule_update()
-    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/deps/LibComm/include)
   else()
-    message(FATAL_ERROR "Must provide LIBCOMM_DIR for RI related features.")
+    find_package(LibComm REQUIRED)
   endif()
+  include_directories(${LIBCOMM_DIR}/include)
 endif()
 
 if(ENABLE_PAW)

cmake/FindLibComm.cmake

@@ -0,0 +1,30 @@
+###############################################################################
+# - Find LibComm
+# Find the native LibComm files.
+#
+#  LIBCOMM_FOUND - True if LibComm is found.
+#  LIBCOMM_DIR - Where to find LibComm files.
+
+find_path(LIBCOMM_DIR
+    include/Comm/Comm_Tools.h
+    HINTS ${LIBCOMM_DIR}
+    HINTS ${LibComm_DIR}
+    HINTS ${libcomm_DIR}
+)
+
+if(NOT LIBCOMM_DIR)
+    include(FetchContent)
+    FetchContent_Declare(
+        LibComm
+        URL https://github.com/abacusmodeling/LibComm/archive/refs/tags/v0.1.1.tar.gz
+    )
+    FetchContent_Populate(LibComm)
+    set(LIBCOMM_DIR ${libcomm_SOURCE_DIR})
+endif()
+# Handle the QUIET and REQUIRED arguments and
+# set LIBCOMM_FOUND to TRUE if all variables are non-zero.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LibComm DEFAULT_MSG LIBCOMM_DIR)
+
+# Copy the results to the output variables and target.
+mark_as_advanced(LIBCOMM_DIR)

cmake/FindLibRI.cmake

@@ -0,0 +1,30 @@
+###############################################################################
+# - Find LibRI
+# Find the native LibRI files.
+#
+#  LIBRI_FOUND - True if LibRI is found.
+#  LIBRI_DIR - Where to find LibRI files.
+
+find_path(LIBRI_DIR
+    include/RI/version.h
+    HINTS ${LIBRI_DIR}
+    HINTS ${LibRI_DIR}
+    HINTS ${libri_DIR}
+)
+
+if(NOT LIBRI_DIR)
+    include(FetchContent)
+    FetchContent_Declare(
+        LibRI
+        URL https://github.com/abacusmodeling/LibRI/archive/refs/tags/v0.2.1.1.tar.gz
+    )
+    FetchContent_Populate(LibRI)
+    set(LIBRI_DIR ${libri_SOURCE_DIR})
+endif()
+# Handle the QUIET and REQUIRED arguments and
+# set LIBRI_FOUND to TRUE if all variables are non-zero.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LibRI DEFAULT_MSG LIBRI_DIR)
+
+# Copy the results to the output variables and target.
+mark_as_advanced(LIBRI_DIR)

toolchain/scripts/stage4/install_libcomm.sh

@@ -12,7 +12,7 @@
 SCRIPT_DIR="$(cd "$(dirname "$SCRIPT_NAME")/.." && pwd -P)"
 
 libcomm_ver="0.1.1"
-libcomm_sha256="3764c934c895bfd9d8fd766d46e6e3d03230f8076e3edbcc31e10ff8f30075a4"
+libcomm_sha256="fa162a197678654f15d91a5a917cce7fb2748bd9b0e344363edea2db87547b72"
 source "${SCRIPT_DIR}"/common_vars.sh
 source "${SCRIPT_DIR}"/tool_kit.sh
 source "${SCRIPT_DIR}"/signal_trap.sh