Add 'mk/' from commit '1eff3ad37f'

git-subtree-dir: mk
git-subtree-mainline: 6ef32bddc1
git-subtree-split: 1eff3ad37f

mk/install.mk

@@ -0,0 +1,57 @@
+# Add a rule for creating $(1) as a directory.  This template may be
+# called multiple times for the same directory.
+define create-dir =
+  ifndef $(1)_SEEN
+    $(1)_SEEN = 1
+    $(1):
+	$$(trace-install) install -d $(1)
+  endif
+endef
+
+
+# Add a rule for installing file $(1) as file $(2) with mode $(3).
+# The directory containing $(2) will be created automatically.
+define install-file-as =
+
+  install: $(2)
+
+  $$(eval $$(call create-dir,$$(dir $(2))))
+
+  $(2): $(1) | $$(dir $(2))
+	$$(trace-install) install -m $(3) $(1) $(2)
+
+endef
+
+
+# Add a rule for installing file $(1) in directory $(2) with mode
+# $(3).  The directory will be created automatically.
+define install-file-in =
+  $$(eval $$(call install-file-as,$(1),$(2)/$$(notdir $(1)),$(3)))
+endef
+
+
+define install-program-in =
+  $$(eval $$(call install-file-in,$(1),$(2),0755))
+endef
+
+
+define install-data-in =
+  $$(eval $$(call install-file-in,$(1),$(2),0644))
+endef
+
+
+# Install a symlink from $(2) to $(1).  Note that $(1) need not exist.
+define install-symlink =
+
+  install: $(2)
+
+  $$(eval $$(call create-dir,$$(dir $(2))))
+
+  $(2): | $$(dir $(2))
+	$$(trace-install) ln -sfn $(1) $(2)
+
+endef
+
+
+print-top-help += \
+  echo "  install: Install into \$$(prefix) (currently set to '$(prefix)')";