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Change the way modules are built so that object paths are relative and use vpath for locating sources (so source paths are also shorter).

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Add some basic documentation for the build system files while we're at it.
This commit is contained in:
px4dev
2013-05-11 11:32:05 -07:00
parent 15aae728e5
commit 196ee8b16f
4 changed files with 110 additions and 24 deletions
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makefiles/firmware.mk
+5 -2
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@@ -223,12 +223,15 @@ MODULE_OBJS := $(foreach path,$(dir $(MODULE_MKFILES)),$(WORK_DIR)$(path)module
.PHONY: $(MODULE_OBJS)
$(MODULE_OBJS): relpath = $(patsubst $(WORK_DIR)%,%,$@)
$(MODULE_OBJS): mkfile = $(patsubst %module.pre.o,%module.mk,$(relpath))
$(MODULE_OBJS): workdir = $(@D)
$(MODULE_OBJS): $(GLOBAL_DEPS) $(NUTTX_CONFIG_HEADER)
$(Q) $(MKDIR) -p $(workdir)
$(Q) $(MAKE) -r -f $(PX4_MK_DIR)module.mk \
MODULE_WORK_DIR=$(dir $@) \
-C $(workdir) \
MODULE_WORK_DIR=$(workdir) \
MODULE_OBJ=$@ \
MODULE_MK=$(mkfile) \
MODULE_NAME=$(lastword $(subst /, ,$(@D))) \
MODULE_NAME=$(lastword $(subst /, ,$(workdir))) \
module
# make a list of phony clean targets for modules