Buildscr: make long parts of the build conditionalisable.

If I want to rebuild just the Javascript puzzles (for example) in
circumstances where I don't expect to need a great many
edit-compile-link cycles, it's easier to get bob to do it for me than
to remember how to set up the development tools on my path. But it
takes ages to run the whole build script if I also have to wait for
the Windows, Mac and Java puzzles to be built, not to mention the
initial Unix build that runs for no purpose other than generating the
icon images.

So now I can run the build with various time-consuming parts
conditioned out, for development purposes. Of course, the default is
still to build absolutely everything.

Buildscr

@@ -1,5 +1,9 @@
 # -*- sh -*-
 # Build script to build Puzzles.
+#
+# You can cut out large components of the build by defining a subset
+# of these options on the bob command line:
+# -DNOSIGN -DNOWINDOWS -DNOMACOS -DNOICONS -DNOJAVA -DNOJS
 
 module puzzles
 
@@ -24,6 +28,7 @@ in puzzles do echo '$#define VER "Version $(Version)"' >> version.h
 # them!)
 in puzzles do perl -i -pe 's/Unidentified build/$(Version)/' osx-info.plist
 
+ifneq "$(NOICONS)" yes then
   # First build some local binaries, to run the icon build.
   in puzzles do perl mkfiles.pl -U CFLAGS='-Wwrite-strings -Werror'
   in puzzles do make
@@ -36,19 +41,25 @@ in puzzles/icons do xvfb-run -s "-screen 0 1024x768x24" make web winicons gtkico
   # servers.
   in puzzles do make distclean
 
-# Re-run mkfiles.pl now that it knows the icons are there.
+endif
+
+# Re-run mkfiles.pl now that it knows the icons are there. (Or for the
+# first time, if we didn't bother building the icons.)
 in puzzles do perl mkfiles.pl
 
 # Rebuild the configure script.
 in puzzles do ./mkauto.sh
 
+ifneq "$(NOMACOS)" yes then
   # Build the OS X .dmg archive.
   delegate osx
     in puzzles do make -f Makefile.osx clean
     in puzzles do make -f Makefile.osx release VER=-DVER=$(Version) XFLAGS='-Wwrite-strings -Werror'
     return puzzles/Puzzles.dmg
   enddelegate
+endif
 
+ifneq "$(NOWINDOWS)" yes then
   # Build the Windows binaries and installer, and the CHM file.
   in puzzles do make -f Makefile.doc clean
   in puzzles do make -f Makefile.doc # build help files for installer
@@ -80,6 +91,7 @@ else
     enddelegate
   endif
   in puzzles do chmod +x win32/*.exe win64/*.exe
+endif
 
 # Build the Pocket PC binaries and CAB.
 #
@@ -122,6 +134,7 @@ in puzzles do mkdir devel
 in puzzles/doc do halibut --html -Chtml-contents-filename:index.html -Chtml-index-filename:indexpage.html -Chtml-template-filename:%k.html -Chtml-template-fragment:%k ../puzzles.but
 in puzzles/devel do halibut --html -Chtml-contents-filename:index.html -Chtml-index-filename:indexpage.html -Chtml-template-filename:%k.html -Chtml-template-fragment:%k ../devel.but
 
+ifneq "$(NOWINDOWS)" yes then
   # Move the deliver-worthy Windows binaries (those specified in
   # gamedesc.txt, which is generated by mkfiles.pl and helpfully
   # excludes the command-line auxiliary utilities such as solosolver,
@@ -133,6 +146,7 @@ in puzzles/win32 do mv `cut -f2 -d: ../gamedesc.txt` ../winbin32
   # Make a zip file of the Windows binaries and help files.
   in puzzles do zip -j puzzles.zip winbin64/*.exe puzzles.chm puzzles.hlp puzzles.cnt
   in puzzles do zip -j puzzles32.zip winbin32/*.exe puzzles.chm puzzles.hlp puzzles.cnt
+endif
 
 # Create the source archive. (That writes the archive into the
 # _parent_ directory, so be careful when we deliver it.)
@@ -145,15 +159,18 @@ ifneq "$(JAVA_UNFINISHED)" "" in puzzles do perl -i~ -pe 'print "!srcdir unfinis
 ifneq "$(JAVA_UNFINISHED)" "" in puzzles do ln -s unfinished/group.R .
 ifneq "$(JAVA_UNFINISHED)" "" in puzzles do perl mkfiles.pl
 
+ifneq "$(NOJAVA)" yes then
   # Build the Java applets.
   delegate nestedvm
     in puzzles do make -f Makefile.nestedvm NESTEDVM="$$NESTEDVM" VER=-DVER=$(Version) XFLAGS="-Wwrite-strings -Werror"
     return puzzles/*.jar
   enddelegate
+endif
 
 # Build the Javascript applets. Since my master build machine doesn't
 # have the right dependencies installed for Emscripten, I do this by a
 # delegation.
+ifneq "$(NOJS)" yes then
   in puzzles do mkdir js # so we can tell output .js files from emcc*.js
   delegate emscripten
     in puzzles do make -f Makefile.emcc OUTPREFIX=js/ clean
@@ -170,6 +187,7 @@ enddelegate
   # sure the main functionality works.
   in puzzles do mkdir jstest
   in puzzles/jstest do ../html/jspage.pl --jspath=../js/ /dev/null ../html/*.html
+endif
 
 # Set up .htaccess containing a redirect for the archive filename.
 in puzzles do echo "AddType application/octet-stream .chm" > .htaccess
@@ -179,25 +197,35 @@ in . do set -- puzzles*.tar.gz; echo RedirectMatch temp '(.*/)'puzzles.tar.gz '$
 in puzzles do echo RedirectMatch temp '(.*/)'puzzles-installer.msi '$$1'puzzles-$(Version)-installer.msi >> .htaccess
 
 # Phew, we're done. Deliver everything!
+ifneq "$(NOICONS)" yes then
   deliver puzzles/icons/*-web.png $@
+endif
+ifneq "$(NOWINDOWS)" yes then
   deliver puzzles/winbin64/*.exe $@
   deliver puzzles/winbin32/*.exe w32/$@
-deliver puzzles/.htaccess $@
-deliver puzzles/doc/*.html doc/$@
-deliver puzzles/devel/*.html devel/$@
-deliver puzzles/Puzzles.dmg $@
-deliver puzzles/puzzles.chm $@
-deliver puzzles/puzzles.hlp $@
-deliver puzzles/puzzles.cnt $@
   deliver puzzles/puzzles.zip $@
   deliver puzzles/puzzles32.zip w32/$@
   deliver puzzles/puzzles.msi puzzles-$(Version)-installer.msi
   deliver puzzles/puzzles32.msi w32/puzzles-$(Version)-32bit-installer.msi
+  deliver puzzles/puzzles.chm $@
+  deliver puzzles/puzzles.hlp $@
+  deliver puzzles/puzzles.cnt $@
+endif
+deliver puzzles/.htaccess $@
+deliver puzzles/doc/*.html doc/$@
+deliver puzzles/devel/*.html devel/$@
+ifneq "$(NOMACOS)" yes then
+  deliver puzzles/Puzzles.dmg $@
+endif
+ifneq "$(NOJAVA)" yes then
   deliver puzzles/*.jar java/$@
+endif
+ifneq "$(NOJS)" yes then
   deliver puzzles/js/*.js js/$@
   deliver puzzles/jstest/*.html jstest/$@
   deliver puzzles/html/*.html html/$@
   deliver puzzles/html/*.pl html/$@
+endif
 deliver puzzles/wwwspans.html $@
 deliver puzzles/wwwlinks.html $@