diff -Naur proj-9.0.0/man/CMakeLists.txt proj-9.0.0-new/man/CMakeLists.txt
--- proj-9.0.0/man/CMakeLists.txt	2022-02-23 18:51:04.000000000 +0000
+++ proj-9.0.0-new/man/CMakeLists.txt	2022-03-02 16:22:14.979350892 +0000
@@ -6,4 +6,4 @@
   man1/gie.1
   man1/projinfo.1
   man1/projsync.1
-  DESTINATION share/man/man1)
+  DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)