From c9dfb7d8c29a4e678970285e802ba5228ec69626 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9B=D0=B5=D0=BE=D0=BD=D0=B8=D0=B4=20=D0=AE=D1=80=D1=8C?=
 =?UTF-8?q?=D0=B5=D0=B2=20=28Leonid=20Yuriev=29?= <leo@yuriev.ru>
Date: Tue, 5 Apr 2022 18:34:37 +0300
Subject: [PATCH] mdbx-cmake: add workaround for LCC 1.25 bug of class inline
 `static constexpr` member field definition.

---
 CMakeLists.txt      | 4 ++++
 test/CMakeLists.txt | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9673c956..b57a8578 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -613,6 +613,10 @@ macro(libmdbx_setup_libs TARGET MODE)
     target_link_libraries(${TARGET} ${MODE} log)
   endif()
   if(LIBCXX_FILESYSTEM AND MDBX_BUILD_CXX)
+    if(CMAKE_COMPILER_IS_ELBRUSCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 1.26.0
+        AND NOT CMAKE_VERSION VERSION_LESS 3.13)
+      target_link_options(${TARGET} PUBLIC "-Wl,--allow-multiple-definition")
+    endif()
     target_link_libraries(${TARGET} PUBLIC ${LIBCXX_FILESYSTEM})
   endif()
 endmacro()
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index fe397141..3f1184d1 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -46,6 +46,10 @@ set_target_properties(mdbx_test PROPERTIES
 target_setup_options(mdbx_test)
 
 if(NOT MDBX_BUILD_CXX AND LIBCXX_FILESYSTEM)
+  if(CMAKE_COMPILER_IS_ELBRUSCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 1.26.0
+      AND NOT CMAKE_VERSION VERSION_LESS 3.13)
+    target_link_options(mdbx_test PRIVATE "-Wl,--allow-multiple-definition")
+  endif()
   target_link_libraries(mdbx_test ${LIBCXX_FILESYSTEM})
 endif()