CMake Error at CMakeLists.txt:15 (find_package):
By not providing "FindGeant4.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Geant4", but
CMake did not find one.
Could not find a package configuration file provided by "Geant4" with any
of the following names:
Geant4Config.cmake
geant4-config.cmake
Add the installation prefix of "Geant4" to CMAKE_PREFIX_PATH or set
"Geant4_DIR" to a directory containing one of the above files. If "Geant4"
provides a separate development package or SDK, be sure it has been
installed.
最后一段给了解决方法，找到吧b1例子的cmake.txt，加一段list(APPEND CMAKE_PREFIX_PATH "/home/wu/work/geant4-build（Geant4Config.cmake的位置）") # 安装路径前缀
原因是你权限问题 ， 我和你遇到相同的问题 ，你尝试回到 root 权限下