1 files changed, 176 insertions, 0 deletions
diff --git a/mk/internal/rte.compile-pre.mk b/mk/internal/rte.compile-pre.mk
new file mode 100644
index 00000000..b9bff4a7
--- /dev/null
+++ b/mk/internal/rte.compile-pre.mk
@@ -0,0 +1,176 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#
+# Common to rte.lib.mk, rte.app.mk, rte.obj.mk
+#
+
+SRCS-all := $(SRCS-y) $(SRCS-n) $(SRCS-)
+
+# convert source to obj file
+src2obj = $(strip $(patsubst %.c,%.o,\
+	$(patsubst %.S,%_s.o,$(1))))
+
+# add a dot in front of the file name
+dotfile = $(strip $(foreach f,$(1),\
+	$(join $(dir $f),.$(notdir $f))))
+
+# convert source/obj files into dot-dep filename (does not
+# include .S files)
+src2dep = $(strip $(call dotfile,$(patsubst %.c,%.o.d, \
+		$(patsubst %.S,,$(1)))))
+obj2dep = $(strip $(call dotfile,$(patsubst %.o,%.o.d,$(1))))
+
+# convert source/obj files into dot-cmd filename
+src2cmd = $(strip $(call dotfile,$(patsubst %.c,%.o.cmd, \
+		$(patsubst %.S,%_s.o.cmd,$(1)))))
+obj2cmd = $(strip $(call dotfile,$(patsubst %.o,%.o.cmd,$(1))))
+
+OBJS-y := $(call src2obj,$(SRCS-y))
+OBJS-n := $(call src2obj,$(SRCS-n))
+OBJS-  := $(call src2obj,$(SRCS-))
+OBJS-all := $(filter-out $(SRCS-all),$(OBJS-y) $(OBJS-n) $(OBJS-))
+
+DEPS-y := $(call src2dep,$(SRCS-y))
+DEPS-n := $(call src2dep,$(SRCS-n))
+DEPS-  := $(call src2dep,$(SRCS-))
+DEPS-all := $(DEPS-y) $(DEPS-n) $(DEPS-)
+DEPSTMP-all := $(DEPS-all:%.d=%.d.tmp)
+
+CMDS-y := $(call src2cmd,$(SRCS-y))
+CMDS-n := $(call src2cmd,$(SRCS-n))
+CMDS-  := $(call src2cmd,$(SRCS-))
+CMDS-all := $(CMDS-y) $(CMDS-n) $(CMDS-)
+
+-include $(DEPS-y) $(CMDS-y)
+
+# command to compile a .c file to generate an object
+ifeq ($(USE_HOST),1)
+C_TO_O = $(HOSTCC) -Wp,-MD,$(call obj2dep,$(@)).tmp $(HOST_CFLAGS) \
+	$(CFLAGS_$(@)) $(HOST_EXTRA_CFLAGS) -o $@ -c $<
+C_TO_O_STR = $(subst ','\'',$(C_TO_O)) #'# fix syntax highlight
+C_TO_O_DISP = $(if $(V),"$(C_TO_O_STR)","  HOSTCC $(@)")
+else
+C_TO_O = $(CC) -Wp,-MD,$(call obj2dep,$(@)).tmp $(CFLAGS) \
+	$(CFLAGS_$(@)) $(EXTRA_CFLAGS) -o $@ -c $<
+C_TO_O_STR = $(subst ','\'',$(C_TO_O)) #'# fix syntax highlight
+C_TO_O_DISP = $(if $(V),"$(C_TO_O_STR)","  CC $(@)")
+endif
+C_TO_O_CMD = 'cmd_$@ = $(C_TO_O_STR)'
+C_TO_O_DO = @set -e; \
+	echo $(C_TO_O_DISP); \
+	$(C_TO_O) && \
+	echo $(C_TO_O_CMD) > $(call obj2cmd,$(@)) && \
+	sed 's,'$@':,dep_'$@' =,' $(call obj2dep,$(@)).tmp > $(call obj2dep,$(@)) && \
+	rm -f $(call obj2dep,$(@)).tmp
+
+# return an empty string if string are equal
+compare = $(strip $(subst $(1),,$(2)) $(subst $(2),,$(1)))
+
+# return a non-empty string if the dst file does not exist
+file_missing = $(call compare,$(wildcard $@),$@)
+
+# return a non-empty string if cmdline changed
+cmdline_changed = $(call compare,$(strip $(cmd_$@)),$(strip $(1)))
+
+# return a non-empty string if a dependency file does not exist
+depfile_missing = $(call compare,$(wildcard $(dep_$@)),$(dep_$@))
+
+# return an empty string if no prereq is newer than target
+#     - $^ -> names of all the prerequisites
+#     - $(wildcard $^) -> every existing prereq
+#     - $(filter-out $(wildcard $^),$^) -> every prereq that don't
+#       exist (filter-out removes existing ones from the list)
+#     - $? -> names of all the prerequisites newer than target
+depfile_newer = $(strip $(filter-out FORCE,$? \
+	$(filter-out $(wildcard $^),$^)))
+
+# return 1 if parameter is a non-empty string, else 0
+boolean = $(if $1,1,0)
+
+#
+# Compile .c file if needed
+# Note: dep_$$@ is from the .d file and DEP_$$@ can be specified by
+# user (by default it is empty)
+#
+.SECONDEXPANSION:
+%.o: %.c $$(wildcard $$(dep_$$@)) $$(DEP_$$(@)) FORCE
+	@[ -d $(dir $@) ] || mkdir -p $(dir $@)
+	$(if $(D),\
+		@echo -n "$< -> $@ " ; \
+		echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
+		echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(C_TO_O))) " ; \
+		echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
+		echo "depfile_newer=$(call boolean,$(depfile_newer))")
+	$(if $(or \
+		$(file_missing),\
+		$(call cmdline_changed,$(C_TO_O)),\
+		$(depfile_missing),\
+		$(depfile_newer)),\
+		$(C_TO_O_DO))
+
+# command to assemble a .S file to generate an object
+ifeq ($(USE_HOST),1)
+S_TO_O = $(CPP) $(HOST_CPPFLAGS) $($(@)_CPPFLAGS) $(HOST_EXTRA_CPPFLAGS) $< $(@).tmp && \
+	$(HOSTAS) $(HOST_ASFLAGS) $($(@)_ASFLAGS) $(HOST_EXTRA_ASFLAGS) -o $@ $(@).tmp
+S_TO_O_STR = $(subst ','\'',$(S_TO_O)) #'# fix syntax highlight
+S_TO_O_DISP =  $(if $(V),"$(S_TO_O_STR)","  HOSTAS $(@)")
+else
+S_TO_O = $(CPP) $(CPPFLAGS) $($(@)_CPPFLAGS) $(EXTRA_CPPFLAGS) $< -o $(@).tmp && \
+	$(AS) $(ASFLAGS) $($(@)_ASFLAGS) $(EXTRA_ASFLAGS) -o $@ $(@).tmp
+S_TO_O_STR = $(subst ','\'',$(S_TO_O)) #'# fix syntax highlight
+S_TO_O_DISP =  $(if $(V),"$(S_TO_O_STR)","  AS $(@)")
+endif
+
+S_TO_O_CMD = "cmd_$@ = $(S_TO_O_STR)"
+S_TO_O_DO = @set -e; \
+	echo $(S_TO_O_DISP); \
+	$(S_TO_O) && \
+	echo $(S_TO_O_CMD) > $(call obj2cmd,$(@))
+
+#
+# Compile .S file if needed
+# Note: DEP_$$@ can be specified by user (by default it is empty)
+#
+%_s.o: %.S $$(DEP_$$@) FORCE
+	@[ ! -d $(dir $@) ] || mkdir -p $(dir $@)
+	$(if $(D),\
+		@echo -n "$< -> $@ " ; \
+		echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
+		echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(S_TO_O_STR))) " ; \
+		echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
+		echo "depfile_newer=$(call boolean,$(depfile_newer)) ")
+	$(if $(or \
+		$(file_missing),\
+		$(call cmdline_changed,$(S_TO_O_STR)),\
+		$(depfile_missing),\
+		$(depfile_newer)),\
+		$(S_TO_O_DO))