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ifneq ($(MKENV_INCLUDED),1)
# We assume that mkenv is in the same directory as this file.
THIS_MAKEFILE = $(lastword $(MAKEFILE_LIST))
include $(dir $(THIS_MAKEFILE))mkenv.mk
endif
# This file expects that OBJ contains a list of all of the object files.
# The directory portion of each object file is used to locate the source
# and should not contain any ..'s but rather be relative to the top of the
# tree.
#
# So for example, py/map.c would have an object file name py/map.o
# The object files will go into the build directory and mantain the same
# directory structure as the source tree. So the final dependency will look
# like this:
#
# build/py/map.o: py/map.c
#
# We set vpath to point to the top of the tree so that the source files
# can be located. By following this scheme, it allows a single build rule
# to be used to compile all .c files.
vpath %.S . $(TOP)
$(BUILD)/%.o: %.S
$(ECHO) "CC $<"
$(Q)$(CC) $(CFLAGS) -c -o $@ $<
vpath %.s . $(TOP)
$(BUILD)/%.o: %.s
$(ECHO) "AS $<"
$(Q)$(AS) -o $@ $<
define compile_c
$(ECHO) "CC $<"
$(Q)$(CC) $(CFLAGS) -c -MD -o $@ $<
@# The following fixes the dependency file.
@# See http://make.paulandlesley.org/autodep.html for details.
@$(CP) $(@:.o=.d) $(@:.o=.P); \
$(SED) -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
-e '/^$$/ d' -e 's/$$/ :/' < $(@:.o=.d) >> $(@:.o=.P); \
$(RM) -f $(@:.o=.d)
endef
vpath %.c . $(TOP)
$(BUILD)/%.o: %.c
$(call compile_c)
$(BUILD)/%.pp: %.c
$(ECHO) "PreProcess $<"
$(Q)$(CC) $(CFLAGS) -E -Wp,-C,-dD,-dI -o $@ $<
# The following rule uses | to create an order only prereuisite. Order only
# prerequisites only get built if they don't exist. They don't cause timestamp
# checking to be performed.
#
# $(sort $(var)) removes duplicates
#
# The net effect of this, is it causes the objects to depend on the
# object directories (but only for existence), and the object directories
# will be created if they don't exist.
OBJ_DIRS = $(sort $(dir $(OBJ)))
$(OBJ): $(HEADER_BUILD)/qstrdefs.generated.h | $(OBJ_DIRS)
$(OBJ_DIRS):
$(MKDIR) -p $@
$(HEADER_BUILD):
$(MKDIR) -p $@
ifneq ($(PROG),)
# Build a standalone executable (unix and unix-cpy do this)
all: $(PROG)
$(PROG): $(OBJ)
$(ECHO) "LINK $@"
$(Q)$(CC) $(COPT) -o $@ $(OBJ) $(LIB) $(LDFLAGS)
ifndef DEBUG
$(Q)$(STRIP) $(STRIPFLAGS_EXTRA) $(PROG)
endif
$(Q)$(SIZE) $(PROG)
clean: clean-prog
clean-prog:
$(RM) -f $(PROG)
$(RM) -f $(PROG).map
.PHONY: clean-prog
endif
clean:
$(RM) -rf $(BUILD)
.PHONY: clean
print-cfg:
$(ECHO) "PY_SRC = $(PY_SRC)"
$(ECHO) "BUILD = $(BUILD)"
$(ECHO) "OBJ = $(OBJ)"
.PHONY: print-cfg
print-def:
@$(ECHO) "The following defines are built into the $(CC) compiler"
touch __empty__.c
@$(CC) -E -Wp,-dM __empty__.c
@$(RM) -f __empty__.c
-include $(OBJ:.o=.P)
|
