Switch to autoconf/automake/libtool.

libtool is included as future preparation for exporting a library.

Makefile.am

@@ -0,0 +1,26 @@
+ACLOCAL_AMFLAGS = -I build-aux/m4
+
+AM_CFLAGS = -DYYDEBUG=1
+
+bin_PROGRAMS = sql
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libsqlpars.pc
+
+# TESTS = test/unitester
+
+# noinst_PROGRAMS = $(TESTS)
+EXTRA_DIST=sql.y sql.l
+
+sql_SOURCES = exec.c sql-parser.h
+nodist_sql_SOURCES = sql.c sql.tab.c sql.tab.h sql.lex.h
+
+BUILT_SOURCES = $(nodist_sql_SOURCES)
+CLEANFILES = $(nodist_sql_SOURCES) sql.output
+
+sql.tab.c sql.tab.h:   sql.y Makefile
+	${BISON} -vd $<
+
+sql.c sql.lex.h: sql.l Makefile
+	${LEX} -o $@ $<
+