# -*-python-*-
Import ('env')
-sources = env['src_glob'] (env, '*.cc') + ['parser.yy', 'lexer.ll']
-includes = env['src_glob'] (env, 'include/*.hh')
+
outdir = Dir ('.').abspath
+cc_sources = env['src_glob'] (env, '*.cc')
+sources = cc_sources + ['parser.yy', 'lexer.ll']
+includes = env['src_glob'] (env, 'include/*.hh')
e = env.Copy ()
-e.Append (YACCFLAGS = '-d')
e.Append (CPPPATH = [outdir, '#/lily/include', '#/flower/include'])
+e.Append (LEXFLAGS = ['-Cfe', '-p', '-p'])
+
+# SCons builds parser.cc and parser.hh automagically with this but
+# keeps removing and rebuilding parser.cc because it wants parser.hpp.
+# e.Append (YACCFLAGS = '-d')
+# e.Depends ('lexer.cc', 'parser.cc')
+# e.Depends ('my-lily-lexer.o', 'parser.cc')
+# e.Depends ('my-lily-parser.o', 'parser.cc')
-e.Depends ('lexer.cc', 'parser.cc')
-e.Depends ('my-lily-lexer.o', 'parser.cc')
-e.Depends ('my-lily-parser.o', 'parser.cc')
-map (e.Precious, ['parser.cc', 'lexer.cc', 'parser.hh'])
+# Adding an explicit Builder works well, we do not even need to list
+# header dependencies.
+HH = Builder (action = 'bison -d -o ${TARGET.base}.cc $SOURCE',
+ suffix = '.hh', src_suffix = '.yy')
+e.Append (BUILDERS = {'HH' : HH})
+e.HH ('parser.hh', 'parser.yy')
e.Append (LIBS = ['flower'])
e.ParseConfig ('guile-config link')
env.Install (env['bindir'], lily)
env.Alias ('install', env['bindir'])
-#po = e.PO (sources + includes)
-#env.Alias ('po', po)
+po = env.Command ('lilypond.po', cc_sources + includes, env['pocommand'])
+env.Alias ('po-update', po)