76 lines
2.4 KiB
Plaintext
76 lines
2.4 KiB
Plaintext
-------------------------------------------------------------------------------
|
|
README
|
|
-------------------------------------------------------------------------------
|
|
|
|
This directory contains makefile modular support files, that can be used in
|
|
your project.
|
|
|
|
Each module is packaged with two inclusion makefiles, <module>-config.mk and
|
|
<module>-rules.mk. The first one defines some new variables for the make, or
|
|
appends values to the existing variables for the make. The second defines rules
|
|
for support building.
|
|
|
|
So in your project, the <module>-config.mk should be included at some place,
|
|
where you are defining variables (near the beginning of the file), and file
|
|
<module>-rules.mk should be included in the rules part of makefile (somewhere
|
|
near to the end of file).
|
|
|
|
Example makefile using gcc compiler module:
|
|
|
|
>>>>>>
|
|
OBJS += foo.o bar.o
|
|
|
|
CFLAGS += -O0 -g
|
|
CPPFLAGS += -MD -MP $(@F).d
|
|
CPPFLAGS += $(DEFS)
|
|
CPPFLAGS += $(INCS)
|
|
LDFLAGS += --static --nostartfiles
|
|
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
|
|
# parameters for gcc module
|
|
PREFIX = arm-elf
|
|
|
|
include $(OPENCM3_DIR)/mk/gcc-config.mk
|
|
|
|
.PHONY: clean all
|
|
|
|
all: binary.images
|
|
|
|
%.images: %.elf %.hex
|
|
|
|
include $(OPENCM3_DIR)/mk/gcc-rules.mk
|
|
|
|
clean:
|
|
$(Q)$(RM) -rf binary.* *.o *.d
|
|
|
|
-include $(OBJS:.o=.d)
|
|
<<<<<<
|
|
|
|
|
|
MODULES
|
|
=======
|
|
|
|
-------------------------------------------------------------------------------
|
|
gcc
|
|
-------------------------------------------------------------------------------
|
|
|
|
This module adds an extended support for GCC toolchain. This adds rules,
|
|
neccessary for compiling C and C++ files into elf binary, and rules for
|
|
generation of bin, hex, or srec output files for flashing.
|
|
|
|
Variables to control the build process (should be set in your makefile):
|
|
------------------------------------------------------------------------
|
|
|
|
CFLAGS C compiler flags
|
|
CXXFLAGS C++ compiler flags
|
|
CPPFLAGS C preprocessor flags (used for C and for C++ compiler)
|
|
LDFLAGS Linker flags
|
|
ARCH_FLAGS Architecture specification flags (-mcpu, -march etc )
|
|
|
|
Variables to tell gcc about project dependencies and input files
|
|
----------------------------------------------------------------
|
|
|
|
LDSCRIPT Linker script file name (can be generated or fixed)
|
|
LIBDEPS Array of library filenames that shoud be rebuilt if needed
|
|
LDLIBS Array of libraries to be linked with (array of -l<libname>)
|
|
OBJS Array of object files to be built
|