We can build our first C file.

util/misc/build.lua

@@ -19,10 +19,27 @@ cprogram {
 	}
 }
 
+cprogram {
+	name = "decode",
+	srcs = { "./convert.c" },
+	deps = {
+		"h+emheaders",
+		"modules+headers",
+		"modules/src/alloc+lib",
+		"modules/src/em_code+lib_k",
+		"modules/src/print+lib",
+		"modules/src/read_em+lib_kv",
+		"modules/src/string+lib",
+		"modules/src/system+lib",
+		"util/data+em_data",
+	}
+}
+
 installable {
 	name = "pkg",
 	map = {
 		["$(PLATDEP)/em_encode"] = "+encode",
+		["$(PLATDEP)/em_decode"] = "+decode",
 		["$(INSDIR)/bin/esize"] = "+esize",
 		["$(PLATIND)/man/man1/esize.1"] = "./esize.1",
 		["$(PLATIND)/man/man6/em_decode.6"] = "./em_decode.6"

util/opt/build.lua

@@ -0,0 +1,85 @@
+include("first/yacc.lua")
+
+yacc {
+	name = "yacc",
+	srcs = { "./mktab.y" }
+}
+
+flex {
+	name = "flex",
+	srcs = { "./scan.l" }
+}
+
+cprogram {
+	name = "mktab",
+	srcs = {
+		matching(filenamesof("+yacc"), "%.c$"),
+		matching(filenamesof("+flex"), "%.c$"),
+	},
+	deps = {
+		"+flex",
+		"+yacc",
+		"util/data+em_data",
+	}
+}
+
+normalrule {
+	name = "pattern_c",
+	ins = {
+		"+mktab",
+		"./patterns",
+		"lang/cem/cpp.ansi+cpp"
+	},
+	outleaves = { "pattern.c" },
+	commands = {
+		"%{ins[3]} < %{ins[2]} | %{ins[1]} > %{outs}"
+	}
+}
+
+normalrule {
+	name = "pop_push_c",
+	ins = {
+		"./pop_push.awk",
+		"h/em_table"
+	},
+	outleaves = { "pop_push.c" },
+	commands = {
+		"awk -f %{ins[1]} < %{ins[2]} > %{outs}"
+	}
+}
+
+local function variant(name, cflags)
+	cprogram {
+		name = name,
+		srcs = {
+			"+pattern_c",
+			"+pop_push_c",
+			"./*.c",
+		},
+		deps = {
+			"./*.h",
+			"h+emheaders",
+			"modules/src/alloc+lib",
+			"modules/src/print+lib",
+			"modules/src/string+lib",
+			"modules/src/system+lib",
+			"util/data+em_data",
+		},
+		vars = {
+			["+cflags"] = cflags
+		}
+	}
+end
+
+variant("em_opt", {})
+variant("em_opt2", {"-DGLOBAL_OPT"})
+
+installable {
+	name = "pkg",
+	map = {
+		["$(PLATDEP)/em_opt"] = "+em_opt",
+		["$(PLATDEP)/em_opt2"] = "+em_opt2",
+		["$(INSDIR)/share/man/man6/em_opt.6"] = "./em_opt.6",
+	}
+}
+