Index: AFLplusplus-3.11c/GNUmakefile
===================================================================
--- AFLplusplus-3.11c.orig/GNUmakefile
+++ AFLplusplus-3.11c/GNUmakefile
@@ -21,8 +21,8 @@ HASH=\#
 
 PREFIX     ?= /usr/local
 BIN_PATH    = $(PREFIX)/bin
-HELPER_PATH = $(PREFIX)/lib/afl
-DOC_PATH    = $(PREFIX)/share/doc/afl
+HELPER_PATH = $(LIBEXEC_DIR)/afl
+DOC_PATH    = $(DOC_DIR)/afl
 MISC_PATH   = $(PREFIX)/share/afl
 MAN_PATH    = $(PREFIX)/share/man/man8
 
Index: AFLplusplus-3.11c/GNUmakefile.llvm
===================================================================
--- AFLplusplus-3.11c.orig/GNUmakefile.llvm
+++ AFLplusplus-3.11c/GNUmakefile.llvm
@@ -20,9 +20,9 @@
 HASH=\#
 
 PREFIX      ?= /usr/local
-HELPER_PATH ?= $(PREFIX)/lib/afl
+HELPER_PATH ?= $(LIBEXEC_DIR)/afl
 BIN_PATH    ?= $(PREFIX)/bin
-DOC_PATH    ?= $(PREFIX)/share/doc/afl
+DOC_PATH    ?= $(DOC_DIR)/afl
 MISC_PATH   ?= $(PREFIX)/share/afl
 MAN_PATH    ?= $(PREFIX)/share/man/man8