build: prevent host default LDFLAGS from leaking into packages
[openwrt.git] / include / toplevel.mk
1 # Makefile for OpenWrt
2 #
3 # Copyright (C) 2007-2012 OpenWrt.org
4 #
5 # This is free software, licensed under the GNU General Public License v2.
6 # See /LICENSE for more information.
7 #
8
9 RELEASE:=Designated Driver
10 PREP_MK= OPENWRT_BUILD= QUIET=0
11
12 export IS_TTY=$(shell tty -s && echo 1 || echo 0)
13
14 include $(TOPDIR)/include/verbose.mk
15
16 ifeq ($(SDK),1)
17   include $(TOPDIR)/include/version.mk
18 else
19   REVISION:=$(shell $(TOPDIR)/scripts/getver.sh)
20 endif
21
22 HOSTCC ?= $(CC)
23 export RELEASE
24 export REVISION
25 export GIT_CONFIG_PARAMETERS='core.autocrlf=false'
26 export MAKE_JOBSERVER=$(filter --jobserver%,$(MAKEFLAGS))
27
28 # prevent perforce from messing with the patch utility
29 unexport P4PORT P4USER P4CONFIG P4CLIENT
30
31 # prevent user defaults for quilt from interfering
32 unexport QUILT_PATCHES QUILT_PATCH_OPTS
33
34 unexport C_INCLUDE_PATH CROSS_COMPILE ARCH
35
36 # prevent distro default LPATH from interfering
37 unexport LPATH
38
39 # make sure that a predefined CFLAGS variable does not disturb packages
40 export CFLAGS=
41 export LDFLAGS=
42
43 empty:=
44 space:= $(empty) $(empty)
45 path:=$(subst :,$(space),$(PATH))
46 path:=$(filter-out .%,$(path))
47 path:=$(subst $(space),:,$(path))
48 export PATH:=$(path)
49
50 unexport TAR_OPTIONS
51
52 ifneq ($(shell $(HOSTCC) 2>&1 | grep clang),)
53   export HOSTCC_REAL?=$(HOSTCC)
54   export HOSTCC_WRAPPER:=$(TOPDIR)/scripts/clang-gcc-wrapper
55 else
56   export HOSTCC_WRAPPER:=$(HOSTCC)
57 endif
58
59 ifeq ($(FORCE),)
60   .config scripts/config/conf scripts/config/mconf: staging_dir/host/.prereq-build
61 endif
62
63 SCAN_COOKIE?=$(shell echo $$$$)
64 export SCAN_COOKIE
65
66 SUBMAKE:=umask 022; $(SUBMAKE)
67
68 ULIMIT_FIX=_limit=`ulimit -n`; [ "$$_limit" = "unlimited" -o "$$_limit" -ge 1024 ] || ulimit -n 1024;
69
70 prepare-mk: FORCE ;
71
72 prepare-tmpinfo: FORCE
73         @+$(MAKE) -r -s staging_dir/host/.prereq-build $(PREP_MK)
74         mkdir -p tmp/info
75         $(_SINGLE)$(NO_TRACE_MAKE) -j1 -r -s -f include/scan.mk SCAN_TARGET="packageinfo" SCAN_DIR="package" SCAN_NAME="package" SCAN_DEPS="$(TOPDIR)/include/package*.mk $(TOPDIR)/overlay/*/*.mk" SCAN_DEPTH=5 SCAN_EXTRA=""
76         $(_SINGLE)$(NO_TRACE_MAKE) -j1 -r -s -f include/scan.mk SCAN_TARGET="targetinfo" SCAN_DIR="target/linux" SCAN_NAME="target" SCAN_DEPS="profiles/*.mk $(TOPDIR)/include/kernel*.mk $(TOPDIR)/include/target.mk" SCAN_DEPTH=2 SCAN_EXTRA="" SCAN_MAKEOPTS="TARGET_BUILD=1"
77         for type in package target; do \
78                 f=tmp/.$${type}info; t=tmp/.config-$${type}.in; \
79                 [ "$$t" -nt "$$f" ] || ./scripts/metadata.pl $${type}_config "$$f" > "$$t" || { rm -f "$$t"; echo "Failed to build $$t"; false; break; }; \
80         done
81         [ tmp/.config-feeds.in -nt tmp/.packagefeeds ] || ./scripts/feeds feed_config > tmp/.config-feeds.in
82         ./scripts/metadata.pl package_mk tmp/.packageinfo > tmp/.packagedeps || { rm -f tmp/.packagedeps; false; }
83         ./scripts/metadata.pl package_feeds tmp/.packageinfo > tmp/.packagefeeds || { rm -f tmp/.packagefeeds; false; }
84         touch $(TOPDIR)/tmp/.build
85
86 .config: ./scripts/config/conf $(if $(CONFIG_HAVE_DOT_CONFIG),,prepare-tmpinfo)
87         @+if [ \! -e .config ] || ! grep CONFIG_HAVE_DOT_CONFIG .config >/dev/null; then \
88                 [ -e $(HOME)/.openwrt/defconfig ] && cp $(HOME)/.openwrt/defconfig .config; \
89                 $(_SINGLE)$(NO_TRACE_MAKE) menuconfig $(PREP_MK); \
90         fi
91
92 scripts/config/mconf:
93         @$(_SINGLE)$(SUBMAKE) -s -C scripts/config all CC="$(HOSTCC_WRAPPER)"
94
95 $(eval $(call rdep,scripts/config,scripts/config/mconf))
96
97 scripts/config/conf:
98         @$(_SINGLE)$(SUBMAKE) -s -C scripts/config conf CC="$(HOSTCC_WRAPPER)"
99
100 config: scripts/config/conf prepare-tmpinfo FORCE
101         $< Config.in
102
103 config-clean: FORCE
104         $(_SINGLE)$(NO_TRACE_MAKE) -C scripts/config clean
105
106 defconfig: scripts/config/conf prepare-tmpinfo FORCE
107         touch .config
108         @if [ -e $(HOME)/.openwrt/defconfig ]; then cp $(HOME)/.openwrt/defconfig .config; fi
109         $< --defconfig=.config Config.in
110
111 confdefault-y=allyes
112 confdefault-m=allmod
113 confdefault-n=allno
114 confdefault:=$(confdefault-$(CONFDEFAULT))
115
116 oldconfig: scripts/config/conf prepare-tmpinfo FORCE
117         $< --$(if $(confdefault),$(confdefault),old)config Config.in
118
119 menuconfig: scripts/config/mconf prepare-tmpinfo FORCE
120         if [ \! -e .config -a -e $(HOME)/.openwrt/defconfig ]; then \
121                 cp $(HOME)/.openwrt/defconfig .config; \
122         fi
123         $< Config.in
124
125 prepare_kernel_conf: .config FORCE
126
127 ifeq ($(wildcard staging_dir/host/bin/quilt),)
128   prepare_kernel_conf:
129         @+$(SUBMAKE) -r tools/quilt/install
130 else
131   prepare_kernel_conf: ;
132 endif
133
134 kernel_oldconfig: prepare_kernel_conf
135         $(_SINGLE)$(NO_TRACE_MAKE) -C target/linux oldconfig
136
137 kernel_menuconfig: prepare_kernel_conf
138         $(_SINGLE)$(NO_TRACE_MAKE) -C target/linux menuconfig
139
140 kernel_nconfig: prepare_kernel_conf
141         $(_SINGLE)$(NO_TRACE_MAKE) -C target/linux nconfig
142
143 staging_dir/host/.prereq-build: include/prereq-build.mk
144         mkdir -p tmp
145         rm -f tmp/.host.mk
146         @$(_SINGLE)$(NO_TRACE_MAKE) -j1 -r -s -f $(TOPDIR)/include/prereq-build.mk prereq 2>/dev/null || { \
147                 echo "Prerequisite check failed. Use FORCE=1 to override."; \
148                 false; \
149         }
150   ifneq ($(realpath $(TOPDIR)/include/prepare.mk),)
151         @$(_SINGLE)$(NO_TRACE_MAKE) -j1 -r -s -f $(TOPDIR)/include/prepare.mk prepare 2>/dev/null || { \
152                 echo "Preparation failed."; \
153                 false; \
154         }
155   endif
156         touch $@
157
158 printdb: FORCE
159         @$(_SINGLE)$(NO_TRACE_MAKE) -p $@ V=99 DUMP_TARGET_DB=1 2>&1
160
161 download: .config FORCE
162         @+$(SUBMAKE) tools/download
163         @+$(SUBMAKE) toolchain/download
164         @+$(SUBMAKE) package/download
165         @+$(SUBMAKE) target/download
166
167 clean dirclean: .config
168         @+$(SUBMAKE) -r $@
169
170 prereq:: prepare-tmpinfo .config
171         @+$(NO_TRACE_MAKE) -r -s $@
172
173 WARN_PARALLEL_ERROR = $(if $(BUILD_LOG),,$(and $(filter -j,$(MAKEFLAGS)),$(findstring s,$(OPENWRT_VERBOSE))))
174
175 ifeq ($(SDK),1)
176
177 %::
178         @+$(PREP_MK) $(NO_TRACE_MAKE) -r -s prereq
179         @./scripts/config/conf --defconfig=.config Config.in
180         @+$(ULIMIT_FIX) $(SUBMAKE) -r $@
181
182 else
183
184 %::
185         @+$(PREP_MK) $(NO_TRACE_MAKE) -r -s prereq
186         @( \
187                 cp .config tmp/.config; \
188                 ./scripts/config/conf --defconfig=tmp/.config -w tmp/.config Config.in > /dev/null 2>&1; \
189                 if ./scripts/kconfig.pl '>' .config tmp/.config | grep -q CONFIG; then \
190                         printf "$(_R)WARNING: your configuration is out of sync. Please run make menuconfig, oldconfig or defconfig!$(_N)\n" >&2; \
191                 fi \
192         )
193         @+$(ULIMIT_FIX) $(SUBMAKE) -r $@ $(if $(WARN_PARALLEL_ERROR), || { \
194                 printf "$(_R)Build failed - please re-run with -j1 to see the real error message$(_N)\n" >&2; \
195                 false; \
196         } )
197
198 endif
199
200 # update all feeds, re-create index files, install symlinks
201 package/symlinks:
202         ./scripts/feeds update -a
203         ./scripts/feeds install -a
204
205 # re-create index files, install symlinks
206 package/symlinks-install:
207         ./scripts/feeds update -i
208         ./scripts/feeds install -a
209
210 # remove all symlinks, don't touch ./feeds
211 package/symlinks-clean:
212         ./scripts/feeds uninstall -a
213
214 help:
215         cat README
216
217 docs docs/compile: FORCE
218         @$(_SINGLE)$(SUBMAKE) -C docs compile
219
220 docs/clean: FORCE
221         @$(_SINGLE)$(SUBMAKE) -C docs clean
222
223 distclean:
224         rm -rf bin build_dir .config* dl feeds key-build* logs package/feeds package/openwrt-packages staging_dir tmp
225         @$(_SINGLE)$(SUBMAKE) -C scripts/config clean
226
227 ifeq ($(findstring v,$(DEBUG)),)
228   .SILENT: symlinkclean clean dirclean distclean config-clean download help tmpinfo-clean .config scripts/config/mconf scripts/config/conf menuconfig staging_dir/host/.prereq-build tmp/.prereq-package prepare-tmpinfo
229 endif
230 .PHONY: help FORCE
231 .NOTPARALLEL:
232