silent rules with automake 1.11

It seems that automake 1.11 made it into unstable and, besides other features, that means silent rules like linux does since quite some time. For the impatient, in configure.ac:

AM_INIT_AUTOMAKE
m4_ifdef([[AM_SILENT_RULES([yes](AM_SILENT_RULES],))])

Then after a round of automake/configure the make invocation will be like

make[3]: Entering directory `foo'
  CXX    source1.lo
  CXX    source2.lo
  CCLD   lib1.la
[...]

Credit note: the autotools mythbuster guide

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