Update for CMake 4

CMake doesn't do tilde expansion internally anymore.

Author: Flamefire

.github/workflows/ci.yml

@@ -470,14 +470,14 @@ jobs:
         run: |
             cd "$BOOST_ROOT"
             mkdir __build_cmake_install_test__ && cd __build_cmake_install_test__
-            cmake -G "${{matrix.generator}}" -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBOOST_INCLUDE_LIBRARIES=$SELF -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DCMAKE_INSTALL_PREFIX=~/.local -DBoost_VERBOSE=ON -DBoost_DEBUG=ON ..
+            cmake -G "${{matrix.generator}}" -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBOOST_INCLUDE_LIBRARIES=$SELF -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DCMAKE_INSTALL_PREFIX=$HOME/local -DBoost_VERBOSE=ON -DBoost_DEBUG=ON ..
             cmake --build . --target install --config ${{matrix.build_type}} -j$B2_JOBS
       - name: Run CMake install tests
         run: |
             cmake_test_folder="$BOOST_ROOT/libs/$SELF/test/cmake_test" # New unified folder
             [ -d "$cmake_test_folder" ] || cmake_test_folder="$BOOST_ROOT/libs/$SELF/test/cmake_install_test"
             cd "$cmake_test_folder"
             mkdir __build_cmake_install_test__ && cd __build_cmake_install_test__
-            cmake -G "${{matrix.generator}}" -DBOOST_CI_INSTALL_TEST=ON -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DCMAKE_PREFIX_PATH=~/.local ..
+            cmake -G "${{matrix.generator}}" -DBOOST_CI_INSTALL_TEST=ON -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DCMAKE_PREFIX_PATH=$HOME/local ..
             cmake --build . --config ${{matrix.build_type}} -j$B2_JOBS
             ctest --output-on-failure --build-config ${{matrix.build_type}}