* Refactoring: put the Nix expression evaluator in its own library so

that it can be used by multiple programs.

src/libexpr/Makefile.am

@@ -0,0 +1,22 @@
+bin_PROGRAMS = nix-instantiate
+
+nix_instantiate_SOURCES = nixexpr.cc parser.cc eval.cc primops.cc main.cc
+nix_instantiate_LDADD = ../libmain/libmain.a ../libstore/libstore.a ../libutil/libutil.a \
+ ../boost/format/libformat.a -L../../externals/inst/lib -ldb_cxx \
+ -lsglr -lATB -lconversion -lasfix2 -lmept -lATerm
+
+AM_CXXFLAGS = \
+ -I.. -I../../externals/inst/include -I../libutil -I../libstore -I../libmain
+
+
+# Parse table generation.
+
+parser.o: parse-table.h
+
+parse-table.h: nix.tbl
+	../bin2c/bin2c nixParseTable < $< > $@ || (rm $@ && exit 1)
+
+%.tbl: %.sdf
+	../../externals/inst/bin/sdf2table -s -i $< -o $@
+
+CLEANFILES = parse-table.h nix.tbl