kou commented on pull request #10768:
URL: https://github.com/apache/arrow/pull/10768#issuecomment-884726000
> For the Ruby one: Arrow Flight is built with system OpenSSL but Arrow
Flight GLib tried to link against conda's OpenSSL and it's failed. I don't know
why this was occurred...
Wrong. This verification scripts build Arrow C++ with bundled gRPC. The
bundled gRPC uses system shared OpenSSL but `libarrow_flight.so` doesn't link
system shared OpenSSL.
The following patch will solve this:
```diff
diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake
b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index a79d4fd7b..56c37000b 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -2543,6 +2543,9 @@ macro(build_grpc)
c-ares::cares
ZLIB::ZLIB
Threads::Threads)
+ if(ARROW_OPENSSL_USE_SHARED)
+ list(APPEND GRPC_LINK_LIBRARIES OpenSSL::SSL)
+ endif()
set_target_properties(gRPC::grpc
PROPERTIES IMPORTED_LOCATION
"${GRPC_STATIC_LIBRARY_GRPC}"
INTERFACE_INCLUDE_DIRECTORIES
"${GRPC_INCLUDE_DIR}"
```
I confirmed this on my local Ubuntu 20.04 Docker container.
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