From: Roger Shimizu <rosh@debian.org>
Date: Wed, 27 May 2020 00:30:33 +0900
Subject: Fix install path for cmake build since we use GNUInstallDirs

So we use install path below since cmake v3.0 [1]:
 - CMAKE_INSTALL_LIBDIR
 - CMAKE_INSTALL_INCLUDEDIR

[1] https://cmake.org/cmake/help/v3.0/module/GNUInstallDirs.html
---
 CMakeLists.txt         | 20 ++++++++++----------
 getdns.pc.in           |  6 +++---
 getdns_ext_event.pc.in |  6 +++---
 3 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7d22d3c..4eb2eb6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1043,27 +1043,27 @@ configure_file(getdns.pc.in getdns.pc @ONLY)
 
 # Installing.
 if (ENABLE_STATIC)
-  install(TARGETS getdns LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+  install(TARGETS getdns LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   if (USE_LIBEV)
-    install(TARGETS getdns_ex_ev LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+    install(TARGETS getdns_ex_ev LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif ()
   if (USE_LIBEVENT2)
-    install(TARGETS getdns_ex_event LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+    install(TARGETS getdns_ex_event LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif ()
   if (USE_LIBUV)
-    install(TARGETS getdns_ex_uv LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+    install(TARGETS getdns_ex_uv LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif ()
 endif ()
 if (ENABLE_SHARED)
-  install(TARGETS getdns_shared LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+  install(TARGETS getdns_shared LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   if (USE_LIBEV)
-    install(TARGETS getdns_ex_ev_shared LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+    install(TARGETS getdns_ex_ev_shared LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif ()
   if (USE_LIBEVENT2)
-    install(TARGETS getdns_ex_event_shared LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+    install(TARGETS getdns_ex_event_shared LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif ()
   if (USE_LIBUV)
-    install(TARGETS getdns_ex_uv_shared LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)
+    install(TARGETS getdns_ex_uv_shared LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif ()
 endif ()
 if (BUILD_GETDNS_QUERY)
@@ -1073,13 +1073,13 @@ if (BUILD_GETDNS_SERVER_MON)
   install(TARGETS getdns_server_mon RUNTIME DESTINATION bin)
 endif ()
 
-install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/getdns DESTINATION include)
+install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/getdns DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/man3 DESTINATION share/man)
 
 set(docdir share/doc/getdns)
 install(FILES AUTHORS ChangeLog COPYING LICENSE NEWS README.md DESTINATION ${docdir})
 install(FILES spec/index.html DESTINATION ${docdir}/spec)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/getdns.pc DESTINATION lib/pkgconfig)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/getdns.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
 
 install(CODE "message(\"\
 ***\n\
diff --git a/getdns.pc.in b/getdns.pc.in
index 604f800..a2a3ca9 100644
--- a/getdns.pc.in
+++ b/getdns.pc.in
@@ -1,9 +1,9 @@
 prefix=@prefix@
 exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
+libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 
-Name: getdns 
+Name: getdns
 Version: @GETDNS_VERSION@
 Description: A modern asynchronous DNS library
 
diff --git a/getdns_ext_event.pc.in b/getdns_ext_event.pc.in
index fec7946..8c547aa 100644
--- a/getdns_ext_event.pc.in
+++ b/getdns_ext_event.pc.in
@@ -1,9 +1,9 @@
 prefix=@prefix@
 exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
+libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 
-Name: getdns_ext_event 
+Name: getdns_ext_event
 Version: @GETDNS_VERSION@
 Description: A modern asynchronous DNS library