--- a/libs/libcodec2/src/Makefile.am
+++ b/libs/libcodec2/src/Makefile.am
@@ -88,6 +88,12 @@ codebookge.$(OBJEXT): codebookge.c
 
 codebook.lo: codebook.c
 
+generate_codebook:
+	$(CC_FOR_BUILD) -o generate_codebook generate_codebook.c -lm
+
+genlspdtcb:
+	$(CC_FOR_BUILD) -o genlspdtcb genlspdtcb.c -lm
+
 codebook.c: generate_codebook $(CODEBOOKS)
 	./generate_codebook lsp_cb $(CODEBOOKS) > codebook.c