mirror of
https://github.com/licsber/micropython.git
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65dc960e3b
unix-cpy was originally written to get semantic equivalent with CPython without writing functional tests. When writing the initial implementation of uPy it was a long way between lexer and functional tests, so the half-way test was to make sure that the bytecode was correct. The idea was that if the uPy bytecode matched CPython 1-1 then uPy would be proper Python if the bytecodes acted correctly. And having matching bytecode meant that it was less likely to miss some deep subtlety in the Python semantics that would require an architectural change later on. But that is all history and it no longer makes sense to retain the ability to output CPython bytecode, because: 1. It outputs CPython 3.3 compatible bytecode. CPython's bytecode changes from version to version, and seems to have changed quite a bit in 3.5. There's no point in changing the bytecode output to match CPython anymore. 2. uPy and CPy do different optimisations to the bytecode which makes it harder to match. 3. The bytecode tests are not run. They were never part of Travis and are not run locally anymore. 4. The EMIT_CPYTHON option needs a lot of extra source code which adds heaps of noise, especially in compile.c. 5. Now that there is an extensive test suite (which tests functionality) there is no need to match the bytecode. Some very subtle behaviour is tested with the test suite and passing these tests is a much better way to stay Python-language compliant, rather than trying to match CPy bytecode.
115 lines
3.2 KiB
Makefile
115 lines
3.2 KiB
Makefile
ifneq ($(MKENV_INCLUDED),1)
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# We assume that mkenv is in the same directory as this file.
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THIS_MAKEFILE = $(lastword $(MAKEFILE_LIST))
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include $(dir $(THIS_MAKEFILE))mkenv.mk
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endif
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# This file expects that OBJ contains a list of all of the object files.
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# The directory portion of each object file is used to locate the source
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# and should not contain any ..'s but rather be relative to the top of the
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# tree.
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#
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# So for example, py/map.c would have an object file name py/map.o
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# The object files will go into the build directory and mantain the same
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# directory structure as the source tree. So the final dependency will look
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# like this:
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#
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# build/py/map.o: py/map.c
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#
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# We set vpath to point to the top of the tree so that the source files
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# can be located. By following this scheme, it allows a single build rule
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# to be used to compile all .c files.
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vpath %.S . $(TOP)
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$(BUILD)/%.o: %.S
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$(ECHO) "CC $<"
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$(Q)$(CC) $(CFLAGS) -c -o $@ $<
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vpath %.s . $(TOP)
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$(BUILD)/%.o: %.s
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$(ECHO) "AS $<"
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$(Q)$(AS) -o $@ $<
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define compile_c
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$(ECHO) "CC $<"
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$(Q)$(CC) $(CFLAGS) -c -MD -o $@ $<
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@# The following fixes the dependency file.
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@# See http://make.paulandlesley.org/autodep.html for details.
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@# Regex adjusted from the above to play better with Windows paths, etc.
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@$(CP) $(@:.o=.d) $(@:.o=.P); \
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$(SED) -e 's/#.*//' -e 's/^.*: *//' -e 's/ *\\$$//' \
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-e '/^$$/ d' -e 's/$$/ :/' < $(@:.o=.d) >> $(@:.o=.P); \
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$(RM) -f $(@:.o=.d)
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endef
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vpath %.c . $(TOP)
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$(BUILD)/%.o: %.c
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$(call compile_c)
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$(BUILD)/%.pp: %.c
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$(ECHO) "PreProcess $<"
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$(Q)$(CC) $(CFLAGS) -E -Wp,-C,-dD,-dI -o $@ $<
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# The following rule uses | to create an order only prereuisite. Order only
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# prerequisites only get built if they don't exist. They don't cause timestamp
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# checking to be performed.
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#
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# We don't know which source files actually need the generated.h (since
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# it is #included from str.h). The compiler generated dependencies will cause
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# the right .o's to get recompiled if the generated.h file changes. Adding
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# an order-only dependendency to all of the .o's will cause the generated .h
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# to get built before we try to compile any of them.
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$(OBJ): | $(HEADER_BUILD)/qstrdefs.generated.h $(HEADER_BUILD)/mpversion.h
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# $(sort $(var)) removes duplicates
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#
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# The net effect of this, is it causes the objects to depend on the
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# object directories (but only for existence), and the object directories
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# will be created if they don't exist.
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OBJ_DIRS = $(sort $(dir $(OBJ)))
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$(OBJ): | $(OBJ_DIRS)
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$(OBJ_DIRS):
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$(MKDIR) -p $@
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$(HEADER_BUILD):
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$(MKDIR) -p $@
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ifneq ($(PROG),)
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# Build a standalone executable (unix does this)
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all: $(PROG)
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$(PROG): $(OBJ)
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$(ECHO) "LINK $@"
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$(Q)$(CC) $(COPT) -o $@ $(OBJ) $(LIB) $(LDFLAGS)
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ifndef DEBUG
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$(Q)$(STRIP) $(STRIPFLAGS_EXTRA) $(PROG)
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endif
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$(Q)$(SIZE) $(PROG)
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clean: clean-prog
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clean-prog:
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$(RM) -f $(PROG)
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$(RM) -f $(PROG).map
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.PHONY: clean-prog
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endif
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clean:
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$(RM) -rf $(BUILD)
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.PHONY: clean
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print-cfg:
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$(ECHO) "PY_SRC = $(PY_SRC)"
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$(ECHO) "BUILD = $(BUILD)"
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$(ECHO) "OBJ = $(OBJ)"
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.PHONY: print-cfg
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print-def:
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@$(ECHO) "The following defines are built into the $(CC) compiler"
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touch __empty__.c
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@$(CC) -E -Wp,-dM __empty__.c
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@$(RM) -f __empty__.c
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-include $(OBJ:.o=.P)
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