diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /scripts/Makefile.modpost |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'scripts/Makefile.modpost')
-rw-r--r-- | scripts/Makefile.modpost | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost new file mode 100644 index 000000000000..94b550e21be8 --- /dev/null +++ b/scripts/Makefile.modpost | |||
@@ -0,0 +1,110 @@ | |||
1 | # =========================================================================== | ||
2 | # Module versions | ||
3 | # =========================================================================== | ||
4 | # | ||
5 | # Stage one of module building created the following: | ||
6 | # a) The individual .o files used for the module | ||
7 | # b) A <module>.o file wich is the .o files above linked together | ||
8 | # c) A <module>.mod file in $(MODVERDIR)/, listing the name of the | ||
9 | # the preliminary <module>.o file, plus all .o files | ||
10 | |||
11 | # Stage 2 is handled by this file and does the following | ||
12 | # 1) Find all modules from the files listed in $(MODVERDIR)/ | ||
13 | # 2) modpost is then used to | ||
14 | # 3) create one <module>.mod.c file pr. module | ||
15 | # 4) create one Module.symvers file with CRC for all exported symbols | ||
16 | # 5) compile all <module>.mod.c files | ||
17 | # 6) final link of the module to a <module.ko> file | ||
18 | |||
19 | # Step 3 is used to place certain information in the module's ELF | ||
20 | # section, including information such as: | ||
21 | # Version magic (see include/vermagic.h for full details) | ||
22 | # - Kernel release | ||
23 | # - SMP is CONFIG_SMP | ||
24 | # - PREEMPT is CONFIG_PREEMPT | ||
25 | # - GCC Version | ||
26 | # Module info | ||
27 | # - Module version (MODULE_VERSION) | ||
28 | # - Module alias'es (MODULE_ALIAS) | ||
29 | # - Module license (MODULE_LICENSE) | ||
30 | # - See include/linux/module.h for more details | ||
31 | |||
32 | # Step 4 is solely used to allow module versioning in external modules, | ||
33 | # where the CRC of each module is retreived from the Module.symers file. | ||
34 | |||
35 | .PHONY: _modpost | ||
36 | _modpost: __modpost | ||
37 | |||
38 | include .config | ||
39 | include scripts/Makefile.lib | ||
40 | |||
41 | symverfile := $(objtree)/Module.symvers | ||
42 | |||
43 | # Step 1), find all modules listed in $(MODVERDIR)/ | ||
44 | __modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod))) | ||
45 | modules := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o))) | ||
46 | |||
47 | _modpost: $(modules) | ||
48 | |||
49 | |||
50 | # Step 2), invoke modpost | ||
51 | # Includes step 3,4 | ||
52 | quiet_cmd_modpost = MODPOST | ||
53 | cmd_modpost = scripts/mod/modpost \ | ||
54 | $(if $(CONFIG_MODVERSIONS),-m) \ | ||
55 | $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,) \ | ||
56 | $(if $(KBUILD_EXTMOD),-i,-o) $(symverfile) \ | ||
57 | $(filter-out FORCE,$^) | ||
58 | |||
59 | .PHONY: __modpost | ||
60 | __modpost: $(wildcard vmlinux) $(modules:.ko=.o) FORCE | ||
61 | $(call cmd,modpost) | ||
62 | |||
63 | # Declare generated files as targets for modpost | ||
64 | $(symverfile): __modpost ; | ||
65 | $(modules:.ko=.mod.c): __modpost ; | ||
66 | |||
67 | |||
68 | # Step 5), compile all *.mod.c files | ||
69 | |||
70 | # modname is set to make c_flags define KBUILD_MODNAME | ||
71 | modname = $(*F) | ||
72 | |||
73 | quiet_cmd_cc_o_c = CC $@ | ||
74 | cmd_cc_o_c = $(CC) $(c_flags) $(CFLAGS_MODULE) \ | ||
75 | -c -o $@ $< | ||
76 | |||
77 | $(modules:.ko=.mod.o): %.mod.o: %.mod.c FORCE | ||
78 | $(call if_changed_dep,cc_o_c) | ||
79 | |||
80 | targets += $(modules:.ko=.mod.o) | ||
81 | |||
82 | # Step 6), final link of the modules | ||
83 | quiet_cmd_ld_ko_o = LD [M] $@ | ||
84 | cmd_ld_ko_o = $(LD) $(LDFLAGS) $(LDFLAGS_MODULE) -o $@ \ | ||
85 | $(filter-out FORCE,$^) | ||
86 | |||
87 | $(modules): %.ko :%.o %.mod.o FORCE | ||
88 | $(call if_changed,ld_ko_o) | ||
89 | |||
90 | targets += $(modules) | ||
91 | |||
92 | |||
93 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. | ||
94 | # --------------------------------------------------------------------------- | ||
95 | |||
96 | .PHONY: FORCE | ||
97 | |||
98 | FORCE: | ||
99 | |||
100 | # Read all saved command lines and dependencies for the $(targets) we | ||
101 | # may be building above, using $(if_changed{,_dep}). As an | ||
102 | # optimization, we don't need to read them if the target does not | ||
103 | # exist, we will rebuild anyway in that case. | ||
104 | |||
105 | targets := $(wildcard $(sort $(targets))) | ||
106 | cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | ||
107 | |||
108 | ifneq ($(cmd_files),) | ||
109 | include $(cmd_files) | ||
110 | endif | ||