--- src/phobos/linux.mak.orig	2008-04-01 00:27:21.000000000 +0200
+++ src/phobos/linux.mak	2008-04-01 00:25:51.000000000 +0200
@@ -44,6 +44,10 @@
 ifeq (html,$(MAKECMDGOALS))
     OBJDIR=none
 endif
+ifeq (headers,$(MAKECMDGOALS))
+    DFLAGS:=$(DFLAGS) -O -release
+    OBJDIR=none
+endif
 
 ifndef OBJDIR
     $(error Cannot make $(MAKECMDGOALS). Please make either \
@@ -243,3 +246,19 @@
 	$(RM) libphobos2.a all_std_modules_generated.d
 	$(RM) -r $(DOC_OUTPUT_DIR) obj
 
+
+HEADERDIR = include
+HEADERS = object.d \
+	$(addprefix std/,$(addsuffix .d,$(STD_MODULES))) \
+	$(addprefix std/,$(addsuffix .d,$(STD_MODULES_NOTBUILT))) \
+	$(addprefix std/c/,$(addsuffix .d,$(STD_C_MODULES))) \
+	$(addprefix std/c/,$(addsuffix .d,$(STD_C_MODULES_NOTBUILT))) \
+	$(addprefix std/c/linux/,$(addsuffix .d,$(STD_C_LINUX_MODULES))) \
+	$(addprefix std/c/linux/,$(addsuffix .d,$(STD_C_LINUX_MODULES_NOTBUILT))) 
+
+HEADERS := $(addprefix $(HEADERDIR)/,$(HEADERS))
+
+$(HEADERDIR)/%.d : %.d
+	$(DMD) -I$(dir $<) -o- -c -H $(DFLAGS) -Hf$@ $<
+
+headers: $(HEADERS)