From 3ce7ae5c2de955d5d79fc23a02ee06fa9071f24a Mon Sep 17 00:00:00 2001
From: Gaëtan Gilbert <gaetan.gilbert@skyskimmer.net>
Date: Tue, 1 May 2018 19:31:45 +0200
Subject: Automatically run alienclean before compiling.

This removes the "leftover files without known source" error in favor
of automatic handling.
---
 Makefile | 52 +++++++++++++++++-----------------------------------
 1 file changed, 17 insertions(+), 35 deletions(-)

diff --git a/Makefile b/Makefile
index 793afb661..897acb649 100644
--- a/Makefile
+++ b/Makefile
@@ -137,40 +137,6 @@ Then, you may want to consider whether you want to restore the autosaves)
 #run.
 endif
 
-# Check that every compiled file around has a known source file.
-# This should help preventing weird compilation failures caused by leftover
-# compiled files after deleting or moving some source files.
-
-EXISTINGVO:=$(call find, '*.vo')
-KNOWNVO:=$(patsubst %.v,%.vo,$(call find, '*.v'))
-ALIENVO:=$(filter-out $(KNOWNVO),$(EXISTINGVO))
-
-EXISTINGOBJS:=$(call find, '*.cm[oxia]' -o -name '*.cmxa')
-KNOWNML:=$(EXISTINGML) $(GENMLFILES) $(GENML4FILES) $(MLPACKFILES:.mlpack=.ml) \
- $(patsubst %.mlp,%.ml,$(wildcard grammar/*.mlp))
-KNOWNOBJS:=$(KNOWNML:.ml=.cmo) $(KNOWNML:.ml=.cmx) $(KNOWNML:.ml=.cmi) \
- $(MLIFILES:.mli=.cmi) \
- $(MLLIBFILES:.mllib=.cma) $(MLLIBFILES:.mllib=.cmxa) grammar/grammar.cma
-ALIENOBJS:=$(filter-out $(KNOWNOBJS),$(EXISTINGOBJS))
-
-ifeq (,$(findstring clean,$(MAKECMDGOALS))) # Skip this for 'make clean' and alii
-ifndef ACCEPT_ALIEN_VO
-ifdef ALIENVO
-$(error Leftover compiled Coq files without known sources: $(ALIENVO); \
-remove them first, for instance via 'make voclean' or 'make alienclean' \
-(or skip this check via 'make ACCEPT_ALIEN_VO=1'))
-endif
-endif
-
-ifndef ACCEPT_ALIEN_OBJ
-ifdef ALIENOBJS
-$(error Leftover compiled OCaml files without known sources: $(ALIENOBJS); \
-remove them first, for instance via 'make clean' or 'make alienclean' \
-(or skip this check via 'make ACCEPT_ALIEN_OBJ=1'))
-endif
-endif
-endif
-
 # Apart from clean and tags, everything will be done in a sub-call to make
 # on Makefile.build. This way, we avoid doing here the -include of .d :
 # since they trigger some compilations, we do not want them for a mere clean.
@@ -186,7 +152,7 @@ endif
 
 MAKE_OPTS := --warn-undefined-variable --no-builtin-rules
 
-submake:
+submake: alienclean
 	$(MAKE) $(MAKE_OPTS) -f Makefile.build $(MAKECMDGOALS)
 
 noconfig:
@@ -283,6 +249,22 @@ devdocclean:
 	rm -f $(OCAMLDOCDIR)/ocamldoc.sty $(OCAMLDOCDIR)/coq.tex
 	rm -f $(OCAMLDOCDIR)/html/*.html
 
+# Ensure that every compiled file around has a known source file.
+# This should help preventing weird compilation failures caused by leftover
+# compiled files after deleting or moving some source files.
+
+EXISTINGVO:=$(call find, '*.vo')
+KNOWNVO:=$(patsubst %.v,%.vo,$(call find, '*.v'))
+ALIENVO:=$(filter-out $(KNOWNVO),$(EXISTINGVO))
+
+EXISTINGOBJS:=$(call find, '*.cm[oxia]' -o -name '*.cmxa')
+KNOWNML:=$(EXISTINGML) $(GENMLFILES) $(GENML4FILES) $(MLPACKFILES:.mlpack=.ml) \
+ $(patsubst %.mlp,%.ml,$(wildcard grammar/*.mlp))
+KNOWNOBJS:=$(KNOWNML:.ml=.cmo) $(KNOWNML:.ml=.cmx) $(KNOWNML:.ml=.cmi) \
+ $(MLIFILES:.mli=.cmi) \
+ $(MLLIBFILES:.mllib=.cma) $(MLLIBFILES:.mllib=.cmxa) grammar/grammar.cma
+ALIENOBJS:=$(filter-out $(KNOWNOBJS),$(EXISTINGOBJS))
+
 alienclean:
 	rm -f $(ALIENOBJS) $(ALIENVO)
 
-- 
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