From cbb267f60bb13baa1cac65517f60249b1b5bd436 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Sun, 8 Nov 2015 00:56:44 -0500
Subject: tidy Makefile

---
 proto/Makefile  | 48 +++++++++++++-----------------------------------
 proto/common.mk | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+), 35 deletions(-)
 create mode 100644 proto/common.mk

diff --git a/proto/Makefile b/proto/Makefile
index e4730d5..6c15198 100644
--- a/proto/Makefile
+++ b/proto/Makefile
@@ -15,45 +15,23 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301 USA
 
-d := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
+srcdir := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
 
-generate += $d/server/interface_backend.go
-generate += $d/server/func_handlerequest.go
-generate += $d/server/type_nilbackend.go
-secondary += $d/requests.txt
-
-ifeq (1,$(words $(MAKEFILE_LIST)))
-
-all: generate
-.PHONY: all
-
-generate: $(generate)
-.PHONY: generate
-
-clean:
-	rm -f -- $(secondary)
-.PHONY: clean
-maintainer-clean: clean
-	rm -f -- $(generate)
-.PHONY: maintainer-clean
-
-.DELETE_ON_ERROR:
-.SECONDARY:
-
-else
-
-# fix these to the current value of `d`
-generate := $(generate)
-secondary := $(secondary)
+generate += $(srcdir)/server/interface_backend.go
+generate += $(srcdir)/server/func_handlerequest.go
+generate += $(srcdir)/server/type_nilbackend.go
+generate_secondary += $(srcdir)/requests.txt
 
+ifeq (1,$(words $(MAKEFILE_LIST)))
+  include common.mk
 endif
-
-$d/requests.txt: $d/nslcd_h.go $d/Makefile
+
+$(srcdir)/requests.txt: $(srcdir)/nslcd_h.go $(srcdir)/Makefile
 	< $< grep -Eo '\btype Request_([^_ ]+)(_\S+)?' | sed 's/^type Request_//' > $@
 
 %.go: %.go.sh
-	./$^ > $@
+	$(call rel,$^) > $@
 
-$d/server/interface_backend.go: $d/requests.txt
-$d/server/func_handlerequest.go: $d/requests.txt
-$d/server/type_nilbackend.go: $d/server/interface_backend.go
+$(srcdir)/server/interface_backend.go: $(srcdir)/requests.txt
+$(srcdir)/server/func_handlerequest.go: $(srcdir)/requests.txt
+$(srcdir)/server/type_nilbackend.go: $(srcdir)/server/interface_backend.go
diff --git a/proto/common.mk b/proto/common.mk
new file mode 100644
index 0000000..41f5c79
--- /dev/null
+++ b/proto/common.mk
@@ -0,0 +1,55 @@
+# Copyright © 2015 Luke Shumaker
+# This work is free. You can redistribute it and/or modify it under the
+# terms of the Do What The Fuck You Want To Public License, Version 2,
+# as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
+
+rel = $(patsubst $(abspath .)/%,./%,$(abspath $1))
+
+all: build
+.PHONY: all
+
+include $(addsuffix /Makefile,$(subdirs))
+
+generate: $(generate)
+.PHONY: generate
+
+configure: generate $(configure)
+.PHONY: configure
+
+build: configure $(build)
+.PHONY: build
+
+install: build $(install)
+.PHONY: install
+
+# un-build
+clean:
+	rm -rf -- $(build) $(build_secondary)
+.PHONY: clean
+
+# un-configure
+distclean: clean
+	rm -rf -- $(configure) $(configure_secondary)
+.PHONY: distclean
+
+# un-generate
+maintainer-clean: distclean
+	rm -rf -- $(generate) $(generate_secondary)
+.PHONY: maintainer-clean
+
+# un-install
+uninstall:
+	rm -f -- $(install)
+	rmdir -p -- $(sort $(dir $(install))) 2>/dev/null || true
+.PHONY: uninstall
+
+
+# Now, this is magic.  It stores the values of environment variables,
+# so that if you change them in a way that would cause something to be
+# rebuilt, then Make knows.
+.var.%: FORCE
+	$(Q)printf '%s' '$($*)' > .tmp$@ && { cmp -s .tmp$@ $@ && rm -f -- .tmp$@ || mv -Tf .tmp$@ $@; } || { rm -f -- .tmp$@; false; }
+
+.DELETE_ON_ERROR:
+.SECONDARY:
+.PHONY: FORCE
-- 
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