--- a/Makefile.in	2021-09-21 10:27:24.966739165 +0200
+++ b/Makefile.in	2021-09-21 10:27:57.537003815 +0200
@@ -9,7 +9,7 @@
 install-suid-root: exec_perms = 4755
 
 CC	 ?= @CC@
-CFLAGS	 ?= @CFLAGS@ @LIBNL3_CLI_CFLAGS@
+CFLAGS	 = @CFLAGS@ @LIBNL3_CLI_CFLAGS@
 CPPFLAGS ?= @CPPFLAGS@
 LDFLAGS  ?= @LDFLAGS@
 DEFS	 ?= @DEFS@