Forwarded: https://github.com/MariaDB/server/pull/1716
From 8c1608a68c57c98cdd695996d44663faca01ddd3 Mon Sep 17 00:00:00 2001
From: Vicentiu Ciorbaru <vicentiu@debian>
Date: Wed, 28 Nov 2018 18:01:04 +0200
Subject: [PATCH] Fix mips compilation failure (__bss_start symbol missing)

__bss_start symbol fails to link if -lsystemd is used. There is no
obvious reason why this happens but the code using it is only relevant
when doing a crash report and it is covered through a separate print
statement anyway (used to print THD->query()).

To fix the compilation problem, just check if we will link with systemd
before checking __bss_start symbol, and add -lsystemd as a required library.
This will reproduce the compilation environment used for the final binary
and will correctly detect if __bss_start will be available or not.
---
 CMakeLists.txt      | 4 ++--
 cmake/systemd.cmake | 2 ++
 configure.cmake     | 3 +++
 3 files changed, 7 insertions(+), 2 deletions(-)

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -363,6 +363,8 @@ ELSE()
   SET(DEFAULT_TMPDIR "\"${TMPDIR}\"")
 ENDIF()
 
+CHECK_SYSTEMD()
+
 # Run platform tests
 INCLUDE(configure.cmake)
 
@@ -394,8 +396,6 @@ SET(MALLOC_LIBRARY "system")
 
 CHECK_PCRE()
 
-CHECK_SYSTEMD()
-
 IF(CMAKE_CROSSCOMPILING AND NOT DEFINED CMAKE_CROSSCOMPILING_EMULATOR)
   SET(IMPORT_EXECUTABLES "IMPORTFILE-NOTFOUND" CACHE FILEPATH "Path to import_executables.cmake from a native build")
   INCLUDE(${IMPORT_EXECUTABLES})
--- a/cmake/systemd.cmake
+++ b/cmake/systemd.cmake
@@ -17,6 +17,9 @@ MACRO(CHECK_SYSTEMD)
   IF(UNIX)
     INCLUDE(FindPkgConfig)
     # http://www.cmake.org/cmake/help/v3.0/module/FindPkgConfig.html
+    INCLUDE(CheckFunctionExists)
+    INCLUDE(CheckIncludeFiles)
+
     SET(WITH_SYSTEMD "auto" CACHE STRING "Enable systemd scripts and notification support")
     IF(WITH_SYSTEMD STREQUAL "yes" OR WITH_SYSTEMD STREQUAL "auto")
       IF(PKG_CONFIG_FOUND)
--- a/configure.cmake
+++ b/configure.cmake
@@ -139,6 +139,9 @@ IF(UNIX)
 
   SET(CMAKE_REQUIRED_LIBRARIES 
     ${LIBM} ${LIBNSL} ${LIBBIND} ${LIBCRYPT} ${LIBSOCKET} ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT} ${LIBRT} ${LIBEXECINFO})
+  IF (HAVE_SYSTEMD)
+    LIST(APPEND CMAKE_REQUIRED_LIBRARIES -lsystemd)
+  ENDIF()
   # Need explicit pthread for gcc -fsanitize=address
   IF(CMAKE_USE_PTHREADS_INIT AND CMAKE_C_FLAGS MATCHES "-fsanitize=")
     SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} pthread)