Using Root 6-30-02 with CMake: Vdt connot be found

Newbie
1

Dear All,

I’m using homebrew to install Root 6 on my Mac, and today I updated all my packages, and when I now want to recompile a script that uses root, that was working fine with the previous root version, I use CMake, I get the following error:

CMake Error at /opt/homebrew/Cellar/cmake/3.28.0/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find Vdt (missing: VDT_INCLUDE_DIR VDT_LIBRARY)
Call Stack (most recent call first):
  /opt/homebrew/Cellar/cmake/3.28.0/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
  /opt/homebrew/Cellar/root/6.30.02/share/root/cmake/modules/FindVdt.cmake:63 (find_package_handle_standard_args)
  /opt/homebrew/Cellar/cmake/3.28.0/share/cmake/Modules/CMakeFindDependencyMacro.cmake:76 (find_package)
  /opt/homebrew/share/root/cmake/ROOTConfig.cmake:132 (find_dependency)
  CMakeLists.txt:46 (find_package)

I did a google search and I find that this VDT package is included in root for a long time already, but previously I had no problems with my cmake. I can’t install VDT with homebrew, so I don’t really know how to fix this issue.

Any ideas?

My CMake file looks like this:

# find rat-models library
find_package(RatModels 2.016.3 REQUIRED)
# find_package(Vdt REQUIRED)
find_package(ROOT 6.30 REQUIRED)
include_directories(${ROOT_INCLUDE_DIRS})

# set the model
add_executable(magdem magdem.cpp)
target_link_libraries(magdem Rat::Models ${ROOT_LIBRARIES})

_ROOT Version: 6.30
_Platform: MacOS
_Compiler: HomeBrew / CMake

2

This bug was solved a couple of days ago on master: VDT Finding Fix, master branch (2023.12.05.) by krasznaa · Pull Request #14178 · root-project/root · GitHub

3

Thanks! In that case I probably have to wait until homebrew updates Root as well…

Cheers,
Nikkie

4

Hi NikkieD,
Are you able to resolve the issue now? If so please let me know how you did it, I am having the same issue now. Thanks!

5

see also Fix `find_package(root)` with Homebrew. Fixes #14113 by bellenot · Pull Request #14474 · root-project/root · GitHub

6

Thanks for quick reply, I saw it but not sure which file I should modify to resolve the issue. My CMakeList.txt looks like this:

cmake_minimum_required(VERSION 3.5)
project(hipoio C CXX Fortran)
set(VERSION 1.0.0)

option(BUILD_FPIC "Build with -fPIC" ON)
option(BUILD_HIPOPY "Build python" OFF)
option(BUILD_EXAMPLES "Build examples programs" OFF)

if(BUILD_FPIC)
  set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()

# Add modules to find find packages
set(CMAKE_MODULE_PATH
   ${CMAKE_MODULE_PATH}
   ${PROJECT_SOURCE_DIR}/cmake)

# Add root support
list(APPEND CMAKE_PREFIX_PATH $ENV{ROOTSYS})
find_package(ROOT REQUIRED COMPONENTS RIO Net)

include(${ROOT_USE_FILE})
set(CMAKE_C_FLAGS "-O3")
set(CMAKE_CXX_FLAGS "-O3 ${ROOT_CXX_FLAGS}")
7

The workaround is to modify a file called ROOTConfig.cmake, first you need to find where it is located in your system.

8

Thanks modifying /root/6.30.02/share/root/cmake/ROOTConfig.cmake fixed my issue. Much appreciated!