1 # SPDX-License-Identifier: GPL-2.0
2 include ../../scripts/Makefile.include
3 include ../../scripts/utilities.mak		# QUIET_CLEAN
4 
5 ifeq ($(srctree),)
6 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
7 srctree := $(patsubst %/,%,$(dir $(srctree)))
8 srctree := $(patsubst %/,%,$(dir $(srctree)))
9 #$(info Determined 'srctree' to be $(srctree))
10 endif
11 
12 CC ?= $(CROSS_COMPILE)gcc
13 AR ?= $(CROSS_COMPILE)ar
14 LD ?= $(CROSS_COMPILE)ld
15 
16 MAKEFLAGS += --no-print-directory
17 
18 INSTALL = install
19 
20 
21 # Use DESTDIR for installing into a different root directory.
22 # This is useful for building a package. The program will be
23 # installed in this directory as if it was the root directory.
24 # Then the build tool can move it later.
25 DESTDIR ?=
26 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
27 
28 LIBFILE = $(OUTPUT)libapi.a
29 
30 CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
31 CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -U_FORTIFY_SOURCE -fPIC
32 
33 ifeq ($(DEBUG),0)
34   CFLAGS += -O3
35 endif
36 
37 ifeq ($(DEBUG),0)
38   CFLAGS += -D_FORTIFY_SOURCE
39 endif
40 
41 # Treat warnings as errors unless directed not to
42 ifneq ($(WERROR),0)
43   CFLAGS += -Werror
44 endif
45 
46 CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
47 CFLAGS += -I$(srctree)/tools/lib/api
48 CFLAGS += -I$(srctree)/tools/include
49 
50 RM = rm -f
51 
52 API_IN := $(OUTPUT)libapi-in.o
53 
54 ifeq ($(LP64), 1)
55   libdir_relative = lib64
56 else
57   libdir_relative = lib
58 endif
59 
60 prefix ?=
61 libdir = $(prefix)/$(libdir_relative)
62 
63 # Shell quotes
64 libdir_SQ = $(subst ','\'',$(libdir))
65 
66 all:
67 
68 export srctree OUTPUT CC LD CFLAGS V
69 include $(srctree)/tools/build/Makefile.include
70 include $(srctree)/tools/scripts/Makefile.include
71 
72 all: fixdep $(LIBFILE)
73 
74 $(API_IN): FORCE
75 	@$(MAKE) $(build)=libapi
76 
77 $(LIBFILE): $(API_IN)
78 	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(API_IN)
79 
80 define do_install_mkdir
81 	if [ ! -d '$(DESTDIR_SQ)$1' ]; then             \
82 		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
83 	fi
84 endef
85 
86 define do_install
87 	if [ ! -d '$2' ]; then             \
88 		$(INSTALL) -d -m 755 '$2'; \
89 	fi;                                \
90 	$(INSTALL) $1 $(if $3,-m $3,) '$2'
91 endef
92 
93 install_lib: $(LIBFILE)
94 	$(call QUIET_INSTALL, $(LIBFILE)) \
95 		$(call do_install_mkdir,$(libdir_SQ)); \
96 		cp -fpR $(LIBFILE) $(DESTDIR)$(libdir_SQ)
97 
98 HDRS := cpu.h debug.h io.h
99 FD_HDRS := fd/array.h
100 FS_HDRS := fs/fs.h fs/tracing_path.h
101 INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/api
102 INSTALL_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(HDRS))
103 INSTALL_FD_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(FD_HDRS))
104 INSTALL_FS_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(FS_HDRS))
105 
106 $(INSTALL_HDRS): $(INSTALL_HDRS_PFX)/%.h: %.h
107 	$(call QUIET_INSTALL, $@) \
108 		$(call do_install,$<,$(INSTALL_HDRS_PFX)/,644)
109 
110 $(INSTALL_FD_HDRS): $(INSTALL_HDRS_PFX)/fd/%.h: fd/%.h
111 	$(call QUIET_INSTALL, $@) \
112 		$(call do_install,$<,$(INSTALL_HDRS_PFX)/fd/,644)
113 
114 $(INSTALL_FS_HDRS): $(INSTALL_HDRS_PFX)/fs/%.h: fs/%.h
115 	$(call QUIET_INSTALL, $@) \
116 		$(call do_install,$<,$(INSTALL_HDRS_PFX)/fs/,644)
117 
118 install_headers: $(INSTALL_HDRS) $(INSTALL_FD_HDRS) $(INSTALL_FS_HDRS)
119 	$(call QUIET_INSTALL, libapi_headers)
120 
121 install: install_lib install_headers
122 
123 clean:
124 	$(call QUIET_CLEAN, libapi) $(RM) $(LIBFILE); \
125 	find $(or $(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
126 
127 FORCE:
128 
129 .PHONY: clean FORCE
130