Nicer Make output

E.g.

  CXX    src/nix-log2xml/log2xml.o
  CC     src/bsdiff-4.3/bsdiff.o
  GEN    scripts/nix-channel
  LD     src/libmain/libnixmain.so

1 files changed, 16 insertions, 0 deletions

diff --git a/tracing.mk b/tracing.mk
new file mode 100644
index 000000000000..08c4ec106656
--- /dev/null
+++ b/tracing.mk
@@ -0,0 +1,16 @@
+V ?= 0
+
+ifeq ($(V), 0)
+
+  trace-gen     = @echo "  GEN   " $@;
+  trace-cc      = @echo "  CC    " $@;
+  trace-cxx     = @echo "  CXX   " $@;
+  trace-ld      = @echo "  LD    " $@;
+  trace-ar      = @echo "  AR    " $@;
+  trace-install = @echo "  INST  " $@;
+  trace-javac   = @echo "  JAVAC " $@;
+  trace-jar     = @echo "  JAR   " $@;
+
+  suppress  = @
+
+endif