generic Makefile

Makefile

@@ -1,14 +1,3 @@
-.PHONY=all clean
-
-all: Makefile.coq
-	$(MAKE) -f Makefile.coq
-
-install: Makefile.coq
-	$(MAKE) install -f Makefile.coq
-
-Makefile.coq: _CoqProject
-	coq_makefile -f _CoqProject -o Makefile.coq
-
-clean: Makefile.coq
-	$(MAKE) -f Makefile.coq clean
-	rm -r Makefile.coq
+# -*- Makefile -*-
+# Main Makefile
+include Makefile.common

Makefile.common

@@ -0,0 +1,87 @@
+# -*- Makefile -*-
+
+######################################################################
+# USAGE:                                                             #
+# The rules this-config::, this-build::, this-distclean::,           #
+# pre-makefile::, this-clean:: and __always__:: may be extended      #
+# Additionally, the following variables may be customized:           #
+SUBDIRS?=
+COQBIN?=$(dir $(shell which coqtop))
+COQMAKEFILE?=$(COQBIN)coq_makefile
+COQDEP?=$(COQBIN)coqdep
+COQPROJECT?=_CoqProject
+COQMAKEOPTIONS?=
+COQMAKEFILEOPTIONS?=
+V?=
+VERBOSE?=V
+######################################################################
+
+# local context: -----------------------------------------------------
+.PHONY: all config build clean distclean __always__
+.SUFFIXES:
+
+H:= $(if $(VERBOSE),,@)  # not used yet
+TOP     = $(dir $(lastword $(MAKEFILE_LIST)))
+COQMAKE = $(MAKE) -f Makefile.coq $(COQMAKEOPTIONS)
+
+# all: ---------------------------------------------------------------
+all: config build
+
+# Makefile.coq: ------------------------------------------------------
+.PHONY: pre-makefile
+
+Makefile.coq: pre-makefile Makefile
+	$(COQMAKEFILE) $(COQMAKEFILEOPTIONS) -f $(COQPROJECT) -o Makefile.coq
+
+# Global config, build, clean and distclean --------------------------
+config: sub-config this-config
+
+build: sub-build this-build
+
+clean: sub-clean this-clean
+
+distclean: sub-distclean this-distclean
+
+# Local config, build, clean and distclean ---------------------------
+.PHONY: this-config this-build this-distclean this-clean
+
+this-config:: __always__
+
+this-build:: this-config Makefile.coq
+	+$(COQMAKE)
+
+this-distclean:: this-clean $(OTHERCLEAN)
+	rm -f Makefile.coq Makefile.coq.conf Makefile.coq
+
+this-clean:: __always__
+	@if [ -f Makefile.coq ]; then $(COQMAKE) cleanall; fi
+
+# Install target -----------------------------------------------------
+.PHONY: install
+
+install: __always__ Makefile.coq
+	$(COQMAKE) install
+# counting lines of Coq code -----------------------------------------
+.PHONY: count
+
+COQFILES := $(shell grep '.v$$' Make)
+
+count:
+	@coqwc $(COQFILES) | tail -1 | \
+	  awk '{printf ("%d (spec=%d+proof=%d)\n", $$1+$$2, $$1, $$2)}'
+# Additionally cleaning backup (*~) files ----------------------------
+this-distclean::
+	rm -f $(shell find . -name '*~')
+
+# Make in SUBDIRS ----------------------------------------------------
+ifdef SUBDIRS
+sub-%: __always__
+	@set -e; for d in $(SUBDIRS); do +$(MAKE) -C $$d $(@:sub-%=%); done
+else
+sub-%: __always__
+	@true
+endif
+
+# Make of individual .vo ---------------------------------------------
+%.vo: __always__ Makefile.coq
+	+$(COQMAKE) $@