Migrate to a CMake-based build system.

This completely removes the old system of mkfiles.pl + Recipe + .R
files that I used to manage the various per-platform makefiles and
other build scripts in this code base. In its place is a
CMakeLists.txt setup, which is still able to compile for Linux,
Windows, MacOS, NestedVM and Emscripten.

The main reason for doing this is because mkfiles.pl was a horrible
pile of unmaintainable cruft. It was hard to keep up to date (e.g.
didn't reliably support the latest Visual Studio project files); it
was so specific to me that nobody else could maintain it (or was even
interested in trying, and who can blame them?), and it wasn't even
easy to _use_ if you weren't me. And it didn't even produce very good
makefiles.

In fact I've been wanting to hurl mkfiles.pl in the bin for years, but
was blocked by CMake not quite being able to support my clang-cl based
system for cross-compiling for Windows on Linux. But CMake 3.20 was
released this month and fixes the last bug in that area (it had to do
with preprocessing of .rc files), so now I'm unblocked!

CMake is not perfect, but it's better at mkfiles.pl's job than
mkfiles.pl was, and it has the great advantage that lots of other
people already know about it.

Other advantages of the CMake system:

 - Easier to build with. At least for the big three platforms, it's
   possible to write down a list of build commands that's actually the
   same everywhere ("cmake ." followed by "cmake --build ."). There's
   endless scope for making your end-user cmake commands more fancy
   than that, for various advantages, but very few people _have_ to.

 - Less effort required to add a new puzzle. You just add a puzzle()
   statement to the top-level CMakeLists.txt, instead of needing to
   remember eight separate fiddly things to put in the .R file. (Look
   at the reduction in CHECKLST.txt!)

 - The 'unfinished' subdirectory is now _built_ unconditionally, even
   if the things in it don't go into the 'make install' target. So
   they won't bit-rot in future.

 - Unix build: unified the old icons makefile with the main build, so
   that each puzzle builds without an icon, runs to build its icon,
   then relinks with it.

 - Windows build: far easier to switch back and forth between debug
   and release than with the old makefiles.

 - MacOS build: CMake has its own .dmg generator, which is surely
   better thought out than my ten-line bodge.

 - net reduction in the number of lines of code in the code base. In
   fact, that's still true _even_ if you don't count the deletion of
   mkfiles.pl itself - that script didn't even have the virtue of
   allowing everything else to be done exceptionally concisely.

1 files changed, 0 insertions, 171 deletions

diff --git a/Recipe b/Recipe
deleted file mode 100644
index f94b1f9..0000000
--- a/Recipe
+++ /dev/null
@@ -1,171 +0,0 @@
-# -*- makefile -*-
-# 
-# This file describes which puzzle binaries are made up from which
-# object and resource files. It is processed into the various
-# Makefiles by means of a Perl script. Makefile changes should
-# really be made by editing this file and/or the Perl script, not
-# by editing the actual Makefiles.
-
-!name puzzles
-
-!makefile gtk Makefile.gtk
-!makefile am Makefile.am
-!makefile vc Makefile.vc
-!makefile wce Makefile.wce
-!makefile cygwin Makefile.cyg
-!makefile osx Makefile.osx
-!makefile gnustep Makefile.gnustep
-!makefile nestedvm Makefile.nestedvm
-!makefile emcc Makefile.emcc
-!makefile clangcl Makefile.clangcl
-
-!srcdir icons/
-
-WINDOWS_COMMON = printing
-         + user32.lib gdi32.lib comctl32.lib comdlg32.lib winspool.lib
-WINDOWS  = windows WINDOWS_COMMON
-COMMON   = midend drawing misc malloc random version
-GTK      = gtk printing ps
-# Objects needed for auxiliary command-line programs.
-STANDALONE = nullfe random misc malloc
-
-ALL      = list
-
-LATIN_DEPS   = matching tree234
-LATIN        = latin LATIN_DEPS
-LATIN_SOLVER = latin[STANDALONE_SOLVER] LATIN_DEPS
-
-# First half of list.c.
-!begin >list.c
-/*
- * list.c: List of pointers to puzzle structures, for monolithic
- * platforms.
- *
- * This file is automatically generated by mkfiles.pl. Do not edit
- * it directly, or the changes will be lost next time mkfiles.pl runs.
- * Instead, edit Recipe and/or its *.R subfiles.
- */
-#include "puzzles.h"
-#define GAMELIST(A) \
-!end
-
-# Now each .R file adds part of the macro definition of GAMELIST to list.c.
-!include *.R
-
-# Then we finish up list.c as follows:
-!begin >list.c
-
-#define DECL(x) extern const game x;
-#define REF(x) &x,
-GAMELIST(DECL)
-const game *gamelist[] = { GAMELIST(REF) };
-const int gamecount = lenof(gamelist);
-!end
-
-# Unix standalone application for special-purpose obfuscation.
-obfusc : [U] obfusc STANDALONE
-
-# Test program built from latin.c.
-latincheck : [U] latin[STANDALONE_LATIN_TEST] LATIN_DEPS STANDALONE
-latincheck : [C] latin[STANDALONE_LATIN_TEST] LATIN_DEPS STANDALONE
-
-# Test program built from matching.c.
-matching : [U] matching[STANDALONE_MATCHING_TEST] tree234 STANDALONE
-matching : [C] matching[STANDALONE_MATCHING_TEST] tree234 STANDALONE
-
-puzzles  : [G] windows[COMBINED] WINDOWS_COMMON COMMON ALL noicon.res
-
-# Mac OS X unified application containing all the puzzles.
-Puzzles  : [MX] osx osx.icns osx-info.plist COMMON ALL
-# For OS X, we must create the online help and include it in the
-# application bundle.) Also we add -DCOMBINED to the compiler flags
-# so as to inform the code that we're building a single binary for
-# all the puzzles. Then I've also got some code in here to build a
-# distributable .dmg disk image.
-!begin osx
-Puzzles_extra = Puzzles.app/Contents/Resources/Help/index.html
-Puzzles.app/Contents/Resources/Help/index.html: \
-	Puzzles.app/Contents/Resources/Help osx-help.but puzzles.but
-	cd Puzzles.app/Contents/Resources/Help; \
-		halibut --html ../../../../osx-help.but ../../../../puzzles.but
-Puzzles.app/Contents/Resources/Help: Puzzles.app/Contents/Resources
-	mkdir -p Puzzles.app/Contents/Resources/Help
-
-release: Puzzles.dmg
-Puzzles.dmg: Puzzles
-	rm -f raw.dmg
-	hdiutil create -megabytes 5 -layout NONE raw.dmg
-	hdid -nomount raw.dmg > devicename
-	newfs_hfs -v "Simon Tatham's Puzzle Collection" `cat devicename`
-	hdiutil eject `cat devicename`
-	hdid raw.dmg | cut -f1 -d' ' > devicename
-	cp -R Puzzles.app /Volumes/"Simon Tatham's Puzzle Collection"
-	hdiutil eject `cat devicename`
-	rm -f Puzzles.dmg
-	hdiutil convert -format UDCO raw.dmg -o Puzzles.dmg
-	rm -f raw.dmg devicename
-!end
-
-!begin am
-bin_PROGRAMS = $(GAMES)
-!end
-!begin am_begin
-GAMES =
-!end
-
-# make install for Unix.
-!begin gtk
-install:
-	for i in $(GAMES); do \
-		$(INSTALL_PROGRAM) -m 755 $(BINPREFIX)$$i $(DESTDIR)$(gamesdir)/$(BINPREFIX)$$i \
-		|| exit 1; \
-	done
-!end
-!begin nestedvm
-%.tmpdir/PuzzleEngine.class: %.mips
-	mkdir -p $(patsubst %.mips,%,$<).tmpdir
-	cd $(patsubst %.mips,%,$<).tmpdir && \
-		java -cp $(NESTEDVM)/build:$(NESTEDVM)/upstream/build/classgen/build \
-		org.ibex.nestedvm.Compiler -outformat class -d . \
-		PuzzleEngine ../$<
-
-org:
-	mkdir -p org/ibex/nestedvm/util
-	cp $(NESTEDVM)/build/org/ibex/nestedvm/Registers.class org/ibex/nestedvm
-	cp $(NESTEDVM)/build/org/ibex/nestedvm/UsermodeConstants.class org/ibex/nestedvm
-	cp $(NESTEDVM)/build/org/ibex/nestedvm/Runtime*.class org/ibex/nestedvm
-	cp $(NESTEDVM)/build/org/ibex/nestedvm/util/Platform*.class org/ibex/nestedvm/util
-	cp $(NESTEDVM)/build/org/ibex/nestedvm/util/Seekable*.class org/ibex/nestedvm/util
-
-applet.manifest:
-	echo "Main-Class: PuzzleApplet" >applet.manifest
-
-PuzzleApplet.class: PuzzleApplet.java org
-	javac -source 1.7 -target 1.7 PuzzleApplet.java
-
-%.jar: %.tmpdir/PuzzleEngine.class PuzzleApplet.class applet.manifest org
-	cd $(patsubst %.jar,%,$@).tmpdir && ln -s ../applet.manifest ../org ../PuzzleApplet*.class .
-	cd $(patsubst %.jar,%,$@).tmpdir && jar cfm ../$@ applet.manifest PuzzleEngine.class PuzzleApplet*.class org
-	echo '<applet archive="'$@'" code="PuzzleApplet" width="700" height="500"></applet>' >$*.html
-!end
-
-# A benchmarking and testing target for the GTK puzzles.
-!begin gtk
-test: benchmark.html benchmark.txt
-
-benchmark.html: benchmark.txt benchmark.pl
-	./benchmark.pl benchmark.txt > $@
-
-benchmark.txt: benchmark.sh $(GAMES)
-	./benchmark.sh > $@
-
-!end
-!begin am
-test: benchmark.html benchmark.txt
-
-benchmark.html: benchmark.txt benchmark.pl
-	./benchmark.pl benchmark.txt > $@
-
-benchmark.txt: benchmark.sh $(GAMES)
-	./benchmark.sh > $@
-!end