Try again, with less verbose Make output

.travis.yml

@@ -0,0 +1,2 @@
+language: c
+script: make

Makefile

@@ -1,6 +1,8 @@
 SYS ?= $(shell gcc -dumpmachine)
 export SYS
 
+.SILENT:
+
 targets = all clean install
 
 ifeq ($(SYS),x86_64-linux-gnu)