3 # Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
10 # * Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # * Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in
14 # the documentation and/or other materials provided with the
16 # * Neither the name of Intel Corporation nor the names of its
17 # contributors may be used to endorse or promote products derived
18 # from this software without specific prior written permission.
20 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 # version: DPDK.L.1.2.3-3
35 # Common to rte.lib.mk, rte.app.mk, rte.obj.mk
38 SRCS-all := $(SRCS-y) $(SRCS-n) $(SRCS-)
40 # convert source to obj file
41 src2obj = $(strip $(patsubst %.c,%.o,\
42 $(patsubst %.S,%_s.o,$(1))))
44 # add a dot in front of the file name
45 dotfile = $(strip $(foreach f,$(1),\
46 $(join $(dir $f),.$(notdir $f))))
48 # convert source/obj files into dot-dep filename (does not
50 src2dep = $(strip $(call dotfile,$(patsubst %.c,%.o.d, \
51 $(patsubst %.S,,$(1)))))
52 obj2dep = $(strip $(call dotfile,$(patsubst %.o,%.o.d,$(1))))
54 # convert source/obj files into dot-cmd filename
55 src2cmd = $(strip $(call dotfile,$(patsubst %.c,%.o.cmd, \
56 $(patsubst %.S,%_s.o.cmd,$(1)))))
57 obj2cmd = $(strip $(call dotfile,$(patsubst %.o,%.o.cmd,$(1))))
59 OBJS-y := $(call src2obj,$(SRCS-y))
60 OBJS-n := $(call src2obj,$(SRCS-n))
61 OBJS- := $(call src2obj,$(SRCS-))
62 OBJS-all := $(filter-out $(SRCS-all),$(OBJS-y) $(OBJS-n) $(OBJS-))
64 DEPS-y := $(call src2dep,$(SRCS-y))
65 DEPS-n := $(call src2dep,$(SRCS-n))
66 DEPS- := $(call src2dep,$(SRCS-))
67 DEPS-all := $(DEPS-y) $(DEPS-n) $(DEPS-)
68 DEPSTMP-all := $(DEPS-all:%.d=%.d.tmp)
70 CMDS-y := $(call src2cmd,$(SRCS-y))
71 CMDS-n := $(call src2cmd,$(SRCS-n))
72 CMDS- := $(call src2cmd,$(SRCS-))
73 CMDS-all := $(CMDS-y) $(CMDS-n) $(CMDS-)
75 -include $(DEPS-y) $(CMDS-y)
77 # command to compile a .c file to generate an object
79 C_TO_O = $(HOSTCC) -Wp,-MD,$(call obj2dep,$(@)).tmp $(HOST_CFLAGS) \
80 $(CFLAGS_$(@)) $(HOST_EXTRA_CFLAGS) -o $@ -c $<
81 C_TO_O_STR = $(subst ','\'',$(C_TO_O)) #'# fix syntax highlight
82 C_TO_O_DISP = $(if $(V),"$(C_TO_O_STR)"," HOSTCC $(@)")
84 C_TO_O = $(CC) -Wp,-MD,$(call obj2dep,$(@)).tmp $(CFLAGS) \
85 $(CFLAGS_$(@)) $(EXTRA_CFLAGS) -o $@ -c $<
86 C_TO_O_STR = $(subst ','\'',$(C_TO_O)) #'# fix syntax highlight
87 C_TO_O_DISP = $(if $(V),"$(C_TO_O_STR)"," CC $(@)")
89 C_TO_O_CMD = "cmd_$@ = $(C_TO_O_STR)"
90 C_TO_O_DO = @set -e; \
91 echo $(C_TO_O_DISP); \
93 echo $(C_TO_O_CMD) > $(call obj2cmd,$(@)) && \
94 sed 's,'$@':,dep_'$@' =,' $(call obj2dep,$(@)).tmp > $(call obj2dep,$(@)) && \
95 rm -f $(call obj2dep,$(@)).tmp
97 # return an empty string if string are equal
98 compare = $(strip $(subst $(1),,$(2)) $(subst $(2),,$(1)))
100 # return a non-empty string if the dst file does not exist
101 file_missing = $(call compare,$(wildcard $@),$@)
103 # return a non-empty string if cmdline changed
104 cmdline_changed = $(call compare,$(cmd_$@),$(1))
106 # return a non-empty string if a dependency file does not exist
107 depfile_missing = $(call compare,$(wildcard $(dep_$@)),$(dep_$@))
109 # return an empty string if no prereq is newer than target
110 # - $^ -> names of all the prerequisites
111 # - $(wildcard $^) -> every existing prereq
112 # - $(filter-out $(wildcard $^),$^) -> every prereq that don't
113 # exist (filter-out removes existing ones from the list)
114 # - $? -> names of all the prerequisites newer than target
115 depfile_newer = $(strip $(filter-out FORCE,$? \
116 $(filter-out $(wildcard $^),$^)))
118 # return 1 if parameter is a non-empty string, else 0
119 boolean = $(if $1,1,0)
122 # Compile .c file if needed
123 # Note: dep_$$@ is from the .d file and DEP_$$@ can be specified by
124 # user (by default it is empty)
127 %.o: %.c $$(wildcard $$(dep_$$@)) $$(DEP_$$(@)) FORCE
128 @[ -d $(dir $@) ] || mkdir -p $(dir $@)
130 @echo -n "$< -> $@ " ; \
131 echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
132 echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(C_TO_O_STR))) " ; \
133 echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
134 echo "depfile_newer=$(call boolean,$(depfile_newer))")
137 $(call cmdline_changed,$(C_TO_O_STR)),\
142 # command to assemble a .S file to generate an object
144 S_TO_O = $(CPP) $(HOST_CPPFLAGS) $($(@)_CPPFLAGS) $(HOST_EXTRA_CPPFLAGS) $< $(@).tmp && \
145 $(HOSTAS) $(HOST_ASFLAGS) $($(@)_ASFLAGS) $(HOST_EXTRA_ASFLAGS) -o $@ $(@).tmp
146 S_TO_O_STR = $(subst ','\'',$(S_TO_O)) #'# fix syntax highlight
147 S_TO_O_DISP = $(if $(V),"$(S_TO_O_STR)"," HOSTAS $(@)")
149 S_TO_O = $(CPP) $(CPPFLAGS) $($(@)_CPPFLAGS) $(EXTRA_CPPFLAGS) $< -o $(@).tmp && \
150 $(AS) $(ASFLAGS) $($(@)_ASFLAGS) $(EXTRA_ASFLAGS) -o $@ $(@).tmp
151 S_TO_O_STR = $(subst ','\'',$(S_TO_O)) #'# fix syntax highlight
152 S_TO_O_DISP = $(if $(V),"$(S_TO_O_STR)"," AS $(@)")
155 S_TO_O_CMD = "cmd_$@ = $(S_TO_O_STR)"
156 S_TO_O_DO = @set -e; \
157 echo $(S_TO_O_DISP); \
159 echo $(S_TO_O_CMD) > $(call obj2cmd,$(@))
162 # Compile .S file if needed
163 # Note: DEP_$$@ can be specified by user (by default it is empty)
165 %_s.o: %.S $$(DEP_$$@) FORCE
166 @[ ! -d $(dir $@) ] || mkdir -p $(dir $@)
168 @echo -n "$< -> $@ " ; \
169 echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
170 echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(S_TO_O_STR))) " ; \
171 echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
172 echo "depfile_newer=$(call boolean,$(depfile_newer)) ")
175 $(call cmdline_changed,$(S_TO_O_STR)),\