From 38e9c81795e79a1f127518e108e7ecf29975ba20 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Mon, 27 Dec 2021 11:27:26 +0100
Subject: Add forgotten common.mak

---
 common.mak | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 common.mak

diff --git a/common.mak b/common.mak
new file mode 100644
index 00000000..0886e8a6
--- /dev/null
+++ b/common.mak
@@ -0,0 +1,59 @@
+#
+# common bits used by all libraries
+#
+
+# first so "all" becomes default target
+all: all-yes
+
+OBJS      += $(OBJS-yes)
+TESTPROGS += $(TESTPROGS-yes)
+
+EXAMPLES  := $(EXAMPLES:%=$(SUBDIR)%-example$(EXESUF))
+OBJS      := $(sort $(OBJS:%=$(SUBDIR)%))
+TESTOBJS  := $(TESTOBJS:%=$(SUBDIR)%) $(TESTPROGS:%=$(SUBDIR)%-test.o)
+TESTPROGS := $(TESTPROGS:%=$(SUBDIR)%-test$(EXESUF))
+HOSTOBJS  := $(HOSTPROGS:%=$(SUBDIR)%.o)
+HOSTPROGS := $(HOSTPROGS:%=$(SUBDIR)%$(HOSTEXESUF))
+TOOLS     += $(TOOLS-yes)
+TOOLOBJS  := $(TOOLS:%=tools/%.o)
+TOOLS     := $(TOOLS:%=tools/%$(EXESUF))
+HEADERS   += $(HEADERS-yes)
+
+SRC_DIR    := $(SRC_PATH)/lib$(NAME)
+ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)/$(ARCH)/*.h))
+SKIPHEADERS += $(ARCH_HEADERS:%=$(ARCH)/%) $(SKIPHEADERS-)
+SKIPHEADERS := $(SKIPHEADERS:%=$(SUBDIR)%)
+HOBJS        = $(filter-out $(SKIPHEADERS:.h=.h.o),$(ALLHEADERS:.h=.h.o))
+checkheaders: $(HOBJS)
+.SECONDARY:   $(HOBJS:.o=.c)
+
+alltools: $(TOOLS)
+
+$(HOSTOBJS): %.o: %.c
+	$(call COMPILE,HOSTCC)
+
+$(HOSTPROGS): %$(HOSTEXESUF): %.o
+	$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $< $(HOSTLIBS)
+
+$(OBJS):     | $(sort $(dir $(OBJS)))
+$(HOBJS):    | $(sort $(dir $(HOBJS)))
+$(HOSTOBJS): | $(sort $(dir $(HOSTOBJS)))
+$(TESTOBJS): | $(sort $(dir $(TESTOBJS)))
+$(TOOLOBJS): | tools
+
+OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(TESTOBJS))
+
+CLEANSUFFIXES     = *.d *.o *~ *.h.c *.map *.ver *.gcno *.gcda
+DISTCLEANSUFFIXES = *.pc
+LIBSUFFIXES       = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a
+
+define RULES
+clean::
+	$(RM) $(OBJS) $(OBJS:.o=.d)
+	$(RM) $(HOSTPROGS)
+	$(RM) $(TOOLS)
+endef
+
+$(eval $(RULES))
+
+-include $(wildcard $(OBJS:.o=.d) $(HOSTOBJS:.o=.d) $(TESTOBJS:.o=.d) $(HOBJS:.o=.d))
-- 
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