File: Makefile

package info (click to toggle)
klibc 2.0.6-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 5,240 kB
  • sloc: ansic: 48,401; asm: 2,531; perl: 789; makefile: 231; sh: 160
file content (185 lines) | stat: -rw-r--r-- 5,306 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
SRCROOT = .

# *DOCUMENTATION*
# To see a list of typical targets execute "make help"

# kbuild compatibility
export srctree  := $(or $(KBUILD_SRC),$(shell pwd))
export objtree  := $(shell pwd)
export KLIBCSRC := usr/klibc
export VERSION := $(shell cat $(srctree)/$(KLIBCSRC)/version)
export KLIBCINC := usr/include
export KLIBCOBJ := usr/klibc
export KLIBCKERNELSRC ?= linux

export VPATH := $(srctree)

include $(srctree)/scripts/Kbuild.include

KLIBCROSS	?= $(CROSS_COMPILE)
export KLIBCROSS
export CC	:= $(KLIBCROSS)gcc
export LD	:= $(KLIBCROSS)ld
export AR	:= $(KLIBCROSS)ar
export RANLIB	:= $(KLIBCROSS)ranlib
export STRIP	:= $(KLIBCROSS)strip
export NM	:= $(KLIBCROSS)nm
export OBJCOPY  := $(KLIBCROSS)objcopy
export OBJDUMP  := $(KLIBCROSS)objdump

NOSTDINC_FLAGS := -nostdlib -nostdinc -isystem $(shell $(CC) -print-file-name=include)

ARCH	          := $(shell uname -m | sed -e s/i.86/i386/ \
			-e s/parisc64/parisc/ -e s/sun4u/sparc64/ \
			-e s/arm.*/arm/ -e s/sa110/arm/ \
			-e s/aarch64.*/arm64/ -e s/sh.*/sh/ \
			-e s/ppc64le/ppc64/)
export KLIBCARCH  ?= $(ARCH)
export KLIBCARCHDIR := $(shell echo $(KLIBCARCH) | sed -e s/s390x/s390/)

export HOSTCC     := gcc
export HOSTCFLAGS := -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
export PERL       := perl

# Location for installation
export prefix      = /usr
export bindir      = $(prefix)/bin
export libdir      = $(prefix)/lib
export mandir      = $(prefix)/man
export INSTALLDIR  = $(prefix)/lib/klibc
export INSTALLROOT =

# Create a fake .config as present in the kernel tree
# But if it exists leave it alone
$(if $(wildcard $(objtree)/.config),,\
  $(shell cp $(srctree)/defconfig $(objtree)/.config))

# Prefix Make commands with $(Q) to silence them
# Use quiet_cmd_xxx, cmd_xxx to create nice output
# use make V=1 to get verbose output

ifdef V
  ifeq ("$(origin V)", "command line")
    KBUILD_VERBOSE = $(V)
  endif
endif
ifndef KBUILD_VERBOSE
  KBUILD_VERBOSE = 0
endif

ifeq ($(KBUILD_VERBOSE),1)
  quiet =
  Q =
else
  quiet=quiet_
  Q = @
endif

# If the user is running make -s (silent mode), suppress echoing of
# commands

ifneq ($(findstring s,$(MAKEFLAGS)),)
  quiet=silent_
endif

export quiet Q KBUILD_VERBOSE

# Do not print "Entering directory ..."
MAKEFLAGS += --no-print-directory

# Shorthand to call Kbuild.klibc
klibc := -f $(srctree)/scripts/Kbuild.klibc obj

# Very first target
.PHONY: all klcc klibc
all: klcc klibc

$(objtree)/.config: $(srctree)/defconfig
	@echo "defconfig has changed, please remove or edit .config"
	@false

$(KLIBCKERNELSRC):
	@echo "Cannot find kernel UAPI headers."
	@echo "Either make a 'linux' symlink point to the usr subdirectory "
	@echo "of a kernel tree with headers installed for the $(KLIBCARCH) "
	@echo "architecture or specify KLIBCKERNELSRC=<path>."
	@false

rpmbuild = $(shell which rpmbuild 2>/dev/null || which rpm)

klibc.spec: klibc.spec.in $(KLIBCSRC)/version
	sed -e 's/@@VERSION@@/$(VERSION)/g' < $< > $@

# Build klcc - it is the first target
klcc: $(objtree)/.config $(KLIBCKERNELSRC)
	$(Q)$(MAKE) $(klibc)=klcc

klibc: $(objtree)/.config $(KLIBCKERNELSRC)
	$(Q)$(MAKE) $(klibc)=.

test: klibc
	$(Q)$(MAKE) $(klibc)=usr/klibc/tests

help:
	@echo	'Cleaning targets:'
	@echo	'  clean	- Remove most generated files'
	@echo	'  mrproper	- Remove all generated files + config'
	@echo	'  distclean	- mprproper + editor backup + patch files'
	@echo	''
	@echo	'Build targets:'
	@echo	'all		- Build all targets'
	@echo	'install	- Install klibc'
	@echo	'klcc		- Wrapper around gcc to compile against klibc'
	@echo	'test		- Run klibc tests'
	@echo
	@echo	'Build options:'
	@echo	'KLIBCKERNELSRC - Path to usr directory containing UAPI headers'
	@echo	'make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
	@echo	'make V=2   [targets] 2 => give reason for rebuild of target'
	@echo
	@echo	'Sample invocation:'
	@echo	'make  KLIBCKERNELSRC=`pwd`/../linux/usr/'

###
# allow one to say make dir/file.o
# Caveat: works only for .c files where we have a Kbuild file in same dir
%.o: %.c FORCE
	 $(Q)$(MAKE) $(klibc)=$(dir $<) $(dir $<)$(notdir $@)

%.s: %.c FORCE
	 $(Q)$(MAKE) $(klibc)=$(dir $<) $(dir $<)$(notdir $@)

%.i: %.c FORCE
	 $(Q)$(MAKE) $(klibc)=$(dir $<) $(dir $<)$(notdir $@)

FORCE: ;
###
# clean: remove generated files
# mrproper does a full cleaning including .config and linux symlink
FIND_IGNORE := \( -name .git -o -name .pc \) -prune -o
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),RM     $(wildcard $(rm-files)))
      cmd_rmfiles = rm -f $(rm-files)
clean:
	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.clean obj=.
	$(Q)find . $(FIND_IGNORE) \
		\( -name *.o -o -name *.a -o -name '.*.cmd' -o \
		   -name '.*.d' -o -name '.*.tmp' \) \
		-type f -print | xargs rm -f

rm-files := $(objtree)/.config linux
distclean mrproper: clean
	 $(Q)find . $(FIND_IGNORE) \
		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
		-o -name '.*.rej' -o -size 0 \
		-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
		-type f -print | xargs rm -f
	$(call cmd,rmfiles)

install: all
	$(Q)$(MAKE) -f $(srctree)/scripts/Kbuild.install obj=.

# This does all the prep work needed to turn a freshly exported git repository
# into a release tarball tree
release: klibc.spec
	rm -f .config