# Fixes an error that occurs when using CMake 4.

--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -417,7 +417,7 @@ ExternalProject_Add(gentables
     SOURCE_DIR ${GENTAB_SDIR}
     BINARY_DIR ${GENTAB_BDIR}
     CONFIGURE_COMMAND
-        "${CMAKE_COMMAND}" -DCMAKE_VERBOSE_MAKEFILE=${CMAKE_VERBOSE_MAKEFILE} -G "${CMAKE_GENERATOR}" -B "${GENTAB_BDIR}" "${GENTAB_SDIR}"
+        "${CMAKE_COMMAND}" -DCMAKE_POLICY_VERSION_MINIMUM=3.10 -DCMAKE_VERBOSE_MAKEFILE=${CMAKE_VERBOSE_MAKEFILE} -G "${CMAKE_GENERATOR}" -B "${GENTAB_BDIR}" "${GENTAB_SDIR}"
     BUILD_COMMAND
         "${CMAKE_COMMAND}" --build "${GENTAB_BDIR}"
     INSTALL_COMMAND ${GENTAB_BDIR}/make_tables.exe "${CMAKE_BINARY_DIR}/"