@@ -860,35 +860,12 @@
 		AC_MSG_RESULT(yes)
 	], [
 		AC_MSG_RESULT(no)
 	])
 	;;
-i?86)
-	AC_MSG_CHECKING(for endbr32)
-	AC_COMPILE_IFELSE([
-		AC_LANG_PROGRAM([], [
-			__asm__ __volatile__ ("endbr32");
-		])
-	], [
-		AC_DEFINE(HAVE_ENDBR32, 1, [Whether we have endbr32])
-		AC_MSG_RESULT(yes)
-	], [
-		AC_MSG_RESULT(no)
-	])
-	;;
-x86_64)
-	AC_MSG_CHECKING(for endbr64)
-	AC_COMPILE_IFELSE([
-		AC_LANG_PROGRAM([], [
-			__asm__ __volatile__ ("endbr64");
-		])
-	], [
-		AC_DEFINE(HAVE_ENDBR64, 1, [Whether we have endbr64])
-		AC_MSG_RESULT(yes)
-	], [
-		AC_MSG_RESULT(no)
-	])
+i?86 | x86_64)
+	AC_CHECK_HEADERS(cet.h)
 	;;
 esac
 
 AC_CHECK_LIB(m, fmod, LIBS="$LIBS -lm")
 AC_CHECK_LIB(complex, creal, TESTS_LIBS="$TESTS_LIBS -lcomplex")