gentoo/dev-libs/libmongocrypt/files/libmongocrypt-1.10.1-build-version.patch

From d8f335e3df9dccbfea1af5651b895f37a740a72e Mon Sep 17 00:00:00 2001
From: Kevin Albertson <kevin.albertson@mongodb.com>
Date: Mon, 8 Jul 2024 10:35:32 -0400
Subject: [PATCH] MONGOCRYPT-706 clear `BUILD_VERSION` before including C
 driver (#855)

* MONGOCRYPT-706 clear `BUILD_VERSION` before including C driver

To prevent applying `BUILD_VERSION` intended for libmongocrypt to the C driver.
---
 cmake/ImportBSON.cmake | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/cmake/ImportBSON.cmake b/cmake/ImportBSON.cmake
index 58d863b87..fac2cb921 100644
--- a/cmake/ImportBSON.cmake
+++ b/cmake/ImportBSON.cmake
@@ -142,9 +142,16 @@ function (_import_bson)
       set (ENABLE_EXTRA_ALIGNMENT ${_extra_alignment_default} CACHE BOOL "Toggle extra alignment of bson_t")
       # We don't want the subproject to find libmongocrypt
       set (ENABLE_CLIENT_SIDE_ENCRYPTION OFF CACHE BOOL "Disable client-side encryption for the libmongoc subproject")
-      # Set `BUILD_VERSION` so C driver does not use a `BUILD_VERSION` meant for libmongocrypt.
+      # Clear `BUILD_VERSION` so C driver does not use a `BUILD_VERSION` meant for libmongocrypt.
       # Both libmongocrypt and C driver support setting a `BUILD_VERSION` to override the version.
-      set (BUILD_VERSION ${MONGOC_FETCH_TAG_FOR_LIBBSON})
+      if (DEFINED CACHE{BUILD_VERSION})
+         set (saved_cached_build_version "${BUILD_VERSION}")
+         unset (BUILD_VERSION CACHE) # Undefine cache variable.
+      endif ()
+      if (DEFINED BUILD_VERSION)
+         set (saved_build_version "${BUILD_VERSION}")
+         unset (BUILD_VERSION) # Undefine normal variable.
+      endif ()
       # Disable building tests in C driver:
       set (ENABLE_TESTS OFF)
       set (BUILD_TESTING OFF)
@@ -157,6 +164,12 @@ function (_import_bson)
       else ()
          add_subdirectory ("${MONGOCRYPT_MONGOC_DIR}" _mongo-c-driver EXCLUDE_FROM_ALL)
       endif ()
+      if (DEFINED saved_cached_build_version)
+         set (BUILD_VERSION "${saved_cached_build_version}" CACHE STRING "Library version")
+      endif ()
+      if (DEFINED saved_build_version)
+         set (BUILD_VERSION "${saved_build_version}")
+      endif ()
       if (TARGET mongoc_static)
          # Workaround: Embedded mongoc_static does not set its INCLUDE_DIRECTORIES for user targets
          target_include_directories (mongoc_static