Allow changing the install path

This commit allow changing the install path during CMake configure step using the CMAKE_INSTALL_PREFIX variable. If the variable is not set, it still defaults to {CMAKE_BINARY_DIR}/install.

Signed-off-by: Tim453 <50015765+Tim453@users.noreply.github.com>

gpt4all-chat/CMakeLists.txt

@@ -187,7 +187,10 @@ target_link_libraries(chat
     PRIVATE llmodel)
 
 set(COMPONENT_NAME_MAIN ${PROJECT_NAME})
-set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/install)
+
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/install CACHE PATH "..." FORCE)
+endif()
 
 install(TARGETS chat DESTINATION bin COMPONENT ${COMPONENT_NAME_MAIN})
 install(TARGETS llmodel DESTINATION lib COMPONENT ${COMPONENT_NAME_MAIN})