assignUser commented on issue #44982:
URL: https://github.com/apache/arrow/issues/44982#issuecomment-2530039264
I don't think we modify the cmake prefix path in anyway that should prevent
otel from being found. I can confirm that a normal
`find_package(opentelemetry-cpp)` does indeed find it within a conda env
without any special additions.
Could you run a build with:
```diff
diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake
b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index 35ad4089e..c12d6c7af 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -4966,8 +4966,9 @@ if(ARROW_WITH_OPENTELEMETRY)
# cURL is required whether we build from source or use an existing
installation
# (OTel's cmake files do not call find_curl for you)
find_curl()
- set(opentelemetry-cpp_SOURCE "AUTO")
+ set(CMAKE_FIND_DEBUG_MODE TRUE)
resolve_dependency(opentelemetry-cpp)
+ set(CMAKE_FIND_DEBUG_MODE FLASE)
set(ARROW_OPENTELEMETRY_LIBS
opentelemetry-cpp::trace
opentelemetry-cpp::logs
```
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