YT-19210: expose YQL shared library for YT.

After this, a new target libyqlplugin.so appears. in open-source cmake build.
Diff in open-source YDB repo looks like the following: https://paste.yandex-team.ru/f302bdb4-7ef2-4362-91c7-6ca45f329264

1 files changed, 71 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/interface/init.h b/yt/cpp/mapreduce/interface/init.h
new file mode 100644
index 00000000000..302be268fc4
--- /dev/null
+++ b/yt/cpp/mapreduce/interface/init.h
@@ -0,0 +1,71 @@
+#pragma once
+
+///
+/// @file yt/cpp/mapreduce/interface/init.h
+///
+/// Initialization functions of YT Wrapper.
+
+#include <yt/cpp/mapreduce/interface/wait_proxy.h>
+
+#include <util/generic/fwd.h>
+
+#include <functional>
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+/// Options for @ref NYT::Initialize() and @ref NYT::JoblessInitialize() functions
+struct TInitializeOptions
+{
+    using TSelf = TInitializeOptions;
+
+    ///
+    /// @brief Override waiting functions for YT Wrapper.
+    ///
+    /// This options allows to override functions used by this library to wait something.
+    FLUENT_FIELD_DEFAULT(::TIntrusivePtr<IWaitProxy>, WaitProxy, nullptr);
+
+    ///
+    /// @brief Enable/disable cleanup when program execution terminates abnormally.
+    ///
+    /// When set to true, library will abort all active transactions and running operations when program
+    /// terminates on error or signal.
+    FLUENT_FIELD_DEFAULT(bool, CleanupOnTermination, false);
+
+    ///
+    /// @brief Set callback to be called before exit() in job mode.
+    ///
+    /// Provided function will be called just before exit() when program is started in job mode.
+    /// This might be useful for shutting down libraries that are used inside operations.
+    ///
+    /// NOTE: Keep in mind that inside job execution environment differs from client execution environment.
+    /// So JobOnExitFunction should not depend on argc/argv environment variables etc.
+    FLUENT_FIELD_OPTION(std::function<void()>, JobOnExitFunction);
+};
+
+///
+/// @brief Performs basic initialization (logging, termination handlers, etc).
+///
+/// This function never switches to job mode.
+void JoblessInitialize(const TInitializeOptions& options = TInitializeOptions());
+
+///
+/// @brief Performs basic initialization and switches to a job mode if required.
+///
+/// This function performs basic initialization (it sets up logging reads the config, etc) and checks if binary is launched
+/// on YT machine inside a job. If latter is true this function launches proper job and after job is done it calls exit().
+///
+/// This function must be called if application starts any operation.
+/// This function must be called immediately after entering main() function before any argument parsing is done.
+void Initialize(int argc, const char **argv, const TInitializeOptions &options = TInitializeOptions());
+
+/// Similar to @ref NYT::Initialize(int, const char**, const TInitializeOptions&)
+void Initialize(int argc, char **argv, const TInitializeOptions &options = TInitializeOptions());
+
+/// Similar to @ref NYT::Initialize(int, const char**, const TInitializeOptions&)
+void Initialize(const TInitializeOptions &options = TInitializeOptions());
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT