diff --git a/build.zsh.in b/build.zsh.in
index b73832d..2f42420 100644
--- a/build.zsh.in
+++ b/build.zsh.in
@@ -187,15 +187,18 @@ done
 ##
 
 function main {
+	# “Global”, per-project configuration.
 	typeset -a prefixes directories
 
-	# FIXME: We may want those to be defined somewhere else.
-	typeset -A ldflags cflags crflags
-
+	# “Local”, per-target configuration.
 	typeset -A sources type depends install auto filename nodist
-
 	typeset -A chmod
 
+	# Per-target configuration that is specific to certain target types.
+	# FIXME: Those should be removed from this file and exported in
+	#        the .prelude of their backend, or similar.
+	typeset -A ldflags cflags crflags
+
 	prefixes=(
 		PREFIX '/usr/local'
 		BINDIR '$(PREFIX)/bin'