To reproduce the issue you can create a conda environment with orc and a third party dependency, like Snappy:
$ conda create -n foo orc snappy
$ conda activate foo
With the minimal CMake project below, no errors occur during setup:
cmake_minimum_required(VERSION 3.2)
project(foo)
find_package(Snappy REQUIRED)
However, if you add a call to find orc, you will then get an error that Snappy could not be found:
cmake_minimum_required(VERSION 3.2)
project(foo)
find_package(Snappy REQUIRED)
find_package(orc REQUIRED)
$ cmake -S . -B build
-- SNAPPY_HOME:
CMake Error at /home/will/miniforge3/envs/foo/lib/cmake/orc/FindSnappy.cmake:80 (message):
Could not find Snappy in system search paths.
Call Stack (most recent call first):
/usr/share/cmake-3.31/Modules/CMakeFindDependencyMacro.cmake:76 (find_package)
/home/will/miniforge3/envs/foo/lib/cmake/orc/orcConfig.cmake:72 (find_dependency)
CMakeLists.txt:5 (find_package)
This issue was first discovered downstream in Apache Arrow (see apache/arrow#46906 (comment)) and appears to have started with Orc 2.1.0
To reproduce the issue you can create a conda environment with orc and a third party dependency, like Snappy:
With the minimal CMake project below, no errors occur during setup:
However, if you add a call to find orc, you will then get an error that Snappy could not be found:
This issue was first discovered downstream in Apache Arrow (see apache/arrow#46906 (comment)) and appears to have started with Orc 2.1.0