From 5eeb260c08035599fd444f36c971bc01e600353b Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Fri, 22 Apr 2022 12:55:00 +0300
Subject: [PATCH] mdbx-cmake: rework making `MDBX_BUILD_TARGET` value.

---
 CMakeLists.txt | 35 ++++++++++++++++++++++++++---------
 1 file changed, 26 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1cc50da2..56a89392 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -861,16 +861,33 @@ endif()
 # make a build-target triplet
 if(CMAKE_C_COMPILER_TARGET)
   set(MDBX_BUILD_TARGET "${CMAKE_C_COMPILER_TARGET}")
-elseif(CMAKE_C_PLATFORM_ID AND NOT CMAKE_C_PLATFORM_ID STREQUAL CMAKE_SYSTEM_NAME)
-  string(STRIP "${CMAKE_C_PLATFORM_ID}-${CMAKE_SYSTEM_NAME}" MDBX_BUILD_TARGET)
-elseif(CMAKE_LIBRARY_ARCHITECTURE)
-  string(STRIP "${CMAKE_LIBRARY_ARCHITECTURE}-${CMAKE_SYSTEM_NAME}" MDBX_BUILD_TARGET)
-elseif(CMAKE_GENERATOR_PLATFORM AND NOT CMAKE_C_PLATFORM_ID STREQUAL CMAKE_SYSTEM_NAME)
-  string(STRIP "${CMAKE_GENERATOR_PLATFORM}-${CMAKE_SYSTEM_NAME}" MDBX_BUILD_TARGET)
-elseif(CMAKE_SYSTEM_ARCH)
-  string(STRIP "${CMAKE_SYSTEM_ARCH}-${CMAKE_SYSTEM_NAME}" MDBX_BUILD_TARGET)
 else()
-  string(STRIP "${CMAKE_SYSTEM_PROCESSOR}-${CMAKE_SYSTEM_NAME}" MDBX_BUILD_TARGET)
+  if(CMAKE_C_COMPILER_ARCHITECTURE_ID)
+    string(STRIP "${CMAKE_C_COMPILER_ARCHITECTURE_ID}" MDBX_BUILD_TARGET)
+  elseif(CMAKE_GENERATOR_PLATFORM AND NOT CMAKE_GENERATOR_PLATFORM STREQUAL CMAKE_SYSTEM_NAME)
+    string(STRIP "${CMAKE_GENERATOR_PLATFORM}" MDBX_BUILD_TARGET)
+  elseif(CMAKE_SYSTEM_ARCH)
+    string(STRIP "${CMAKE_SYSTEM_ARCH}" MDBX_BUILD_TARGET)
+  elseif(CMAKE_LIBRARY_ARCHITECTURE)
+    string(STRIP "${CMAKE_LIBRARY_ARCHITECTURE}" MDBX_BUILD_TARGET)
+  elseif(CMAKE_SYSTEM_PROCESSOR)
+    string(STRIP "${CMAKE_SYSTEM_PROCESSOR}" MDBX_BUILD_TARGET)
+  else()
+    set(MDBX_BUILD_TARGET "unknown")
+  endif()
+  if(CMAKE_C_COMPILER_ABI
+      AND NOT (CMAKE_C_COMPILER_ABI MATCHES ".*${MDBX_BUILD_TARGET}.*" OR MDBX_BUILD_TARGET MATCHES ".*${CMAKE_C_COMPILER_ABI}.*"))
+    string(APPEND MDBX_BUILD_TARGET "-${CMAKE_C_COMPILER_ABI}")
+  endif()
+  if(CMAKE_C_PLATFORM_ID
+      AND NOT (CMAKE_SYSTEM_NAME
+        AND (CMAKE_C_PLATFORM_ID MATCHES ".*${CMAKE_SYSTEM_NAME}.*" OR CMAKE_SYSTEM_NAME MATCHES ".*${CMAKE_C_PLATFORM_ID}.*"))
+      AND NOT (CMAKE_C_PLATFORM_ID MATCHES ".*${CMAKE_C_PLATFORM_ID}.*" OR MDBX_BUILD_TARGET MATCHES ".*${CMAKE_C_PLATFORM_ID}.*"))
+    string(APPEND MDBX_BUILD_TARGET "-${CMAKE_C_COMPILER_ABI}")
+  endif()
+  if(CMAKE_SYSTEM_NAME)
+    string(APPEND MDBX_BUILD_TARGET "-${CMAKE_SYSTEM_NAME}")
+  endif()
 endif()
 
 # provide build-type