Add an explaining comment about stubs

libxcrypt.spec

@@ -5,6 +5,7 @@
 %bcond_with    new_api
 %endif
 
+
 # Build the compat package?
 %if !(0%{?fedora} >= 999 || 0%{?rhel} >= 99 || %{without new_api})
 %bcond_without compat_pkg
@@ -12,6 +13,7 @@
 %bcond_with    compat_pkg
 %endif
 
+
 # Replace obsolete functions with a stub?
 %if (0%{?fedora} >= 30 || 0%{?rhel} >= 9) && %{with compat_pkg}
 %bcond_without enosys_stubs
@@ -19,9 +21,11 @@
 %bcond_with    enosys_stubs
 %endif
 
+
 # Build the static library?
 %bcond_without staticlib
 
+
 # Run memcheck?
 %ifarch %{valgrind_arches}
 # Valgrind does not work well on %%{power64} arches.
@@ -69,6 +73,8 @@
 %global compat_api     glibc
 %endif
 
+
+# Do we replace the obsolete API functions with stubs?
 %if %{with enosys_stubs}
 %global enosys_stubs   yes
 %else
@@ -87,6 +93,7 @@
 %endif
 %endif
 
+
 # Needed for out-of-tree builds.
 %global _configure ../"configure"