More stuff builds; almost the C compiler now.

util/LLgen/build.lua

@@ -0,0 +1,97 @@
+cprogram {
+	name = "llgen",
+
+	-- These use pre-LLgen'd versions of LLgen.c, Lpars.c and tokens.c. If
+	-- LLgen.g gets updated, they need rebuilding. Use the bootstrap script to
+	-- do this.
+
+	srcs = { "./src/*.c" },
+	cflags = { "-DLIBDIR=\\\""..abspath("util/LLgen/lib").."\\\"", "-DNON_CORRECTING" },
+}
+
+definerule("llgen",
+	{
+		srcs = { type="targets" },
+	},
+	function(e)
+		-- Remember this is executed from the caller's directory; local
+		-- target names will resolve there
+		local fs = replace(basename(e.srcs), "%.g$", "")
+
+		return normalrule {
+			name = e.name,
+			cwd = e.cwd,
+			outleaves = {
+				"Lpars.c",
+				"Lpars.h",
+				unpack(replace(fs, "$", ".c"))
+			},
+			ins = {
+				"util/LLgen+llgen",
+				unpack(e.srcs),
+			},
+			commands = {
+				"cd %{dir} && %{abspath(ins)}"
+			}
+		}
+	end
+)
+
+--[[
+D := util/LLgen
+
+# Rule to build LLgen.
+
+define build-llgen-impl
+	$(call reset)
+	$(eval cflags += -DNON_CORRECTING -DLIBDIR=\"$(abspath $D/lib)\")
+	$(call cfile, $D/src/main.c)
+	$(call cfile, $D/src/gencode.c)
+	$(call cfile, $D/src/compute.c)
+	$(call cfile, $D/src/check.c)
+	$(call cfile, $D/src/reach.c)
+	$(call cfile, $D/src/global.c)
+	$(call cfile, $D/src/name.c)
+	$(call cfile, $D/src/sets.c)
+	$(call cfile, $D/src/alloc.c)
+	$(call cfile, $D/src/machdep.c)
+	$(call cfile, $D/src/cclass.c)
+	$(call cfile, $D/src/savegram.c)
+
+	# These use pre-LLgen'd version of the files. If LLgen.g gets updated,
+	# they need rebuilding. Use the bootstrap script to do this.
+
+	$(call cfile, $D/src/LLgen.c)
+	$(call cfile, $D/src/Lpars.c)
+	$(call cfile, $D/src/tokens.c)
+
+	$(call cprogram, $(BINDIR)/LLgen)
+	LLGEN := $o
+endef
+
+$(eval $(build-llgen-impl))
+
+# Rule to invoke to *use* LLgen.
+#
+#  $1: directory to put output files
+#  $2: input files
+#
+# Output files are compiled via cfile and queued.
+
+define llgen-impl
+$(eval o := $1/Lpars.c $(patsubst %.g, $(strip $1)/%.c, $(notdir $2)))
+$(eval CLEANABLES += $o $1/Lpars.h)
+
+$o: $1/Lpars.h
+$1/Lpars.h: $2 $(LLGEN)
+	@echo LLGEN $1/Lpars.c
+	@mkdir -p $1
+	$(hide) $(RM) $o $1/Lpars.h
+	$(hide) cd $1 && $(LLGEN) $(abspath $2)
+
+$(foreach f,$o,$(call cfile,$f))
+
+endef
+
+llgen = $(eval $(call llgen-impl,$1,$2))
+--]]