From: Jakub Jirutka <jakub@jirutka.cz>
Date: Thu, 19 Aug 2021 23:08:13 +0200
Subject: Fix install paths according to Linux conventions

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -212,9 +212,9 @@
   set(mi_install_incdir   "include")
   set(mi_install_cmakedir "cmake")
 else()
-  set(mi_install_libdir   "lib/mimalloc-${mi_version}")
+  set(mi_install_libdir   "lib")
-  set(mi_install_incdir   "include/mimalloc-${mi_version}")
+  set(mi_install_incdir   "include")
-  set(mi_install_cmakedir "share/mimalloc-${mi_version}/cmake") 
+  set(mi_install_cmakedir "lib/cmake/mimalloc") 
 endif()
 
 if(MI_SECURE)
--- a/cmake/mimalloc-config.cmake
+++ b/cmake/mimalloc-config.cmake
@@ -1,11 +1,14 @@
 include(${CMAKE_CURRENT_LIST_DIR}/mimalloc.cmake)
-get_filename_component(MIMALLOC_SHARE_DIR "${CMAKE_CURRENT_LIST_DIR}" PATH)  # one up from the cmake dir, e.g. /usr/local/share/mimalloc-2.0
-if (MIMALLOC_SHARE_DIR MATCHES "/share/")
-  string(REPLACE "/share/" "/lib/"     MIMALLOC_LIBRARY_DIR ${MIMALLOC_SHARE_DIR})
-  string(REPLACE "/share/" "/include/" MIMALLOC_INCLUDE_DIR ${MIMALLOC_SHARE_DIR})
+
+if (CMAKE_CURRENT_LIST_DIR MATCHES "/lib/cmake/")
+  get_filename_component(_INSTALL_PREFIX "${CMAKE_CURRENT_LIST_DIR}/../.." PATH)  # /usr/lib/cmake/mimalloc-2.0 -> /usr
+  set(MIMALLOC_LIBRARY_DIR "${_INSTALL_PREFIX}/lib")
+  set(MIMALLOC_INCLUDE_DIR "${_INSTALL_PREFIX}/include")
+  unset(_INSTALL_PREFIX)
 else()
   # if MI_INSTALL_TOPLEVEL==ON
+  get_filename_component(MIMALLOC_SHARE_DIR "${CMAKE_CURRENT_LIST_DIR}" PATH)  # one up from the cmake dir
   set(MIMALLOC_LIBRARY_DIR "${MIMALLOC_SHARE_DIR}/lib")      
   set(MIMALLOC_INCLUDE_DIR "${MIMALLOC_SHARE_DIR}/include")  
 endif()  
 set(MIMALLOC_TARGET_DIR "${MIMALLOC_LIBRARY_DIR}") # legacy