7 HOSTMAKE
:= $(shell which
$(HOSTMAKE
) || type
-p
$(HOSTMAKE
) || echo make
)
9 # If BR2_JLEVEL is 0, scale the maximum concurrency with the number of
10 # CPUs. An additional job is used in order to keep processors busy
11 # while waiting on I/O.
12 # If the number of processors is not available, assume one.
13 ifeq ($(BR2_JLEVEL
),0)
14 PARALLEL_JOBS
:= $(shell echo \
15 $$((1 + `getconf _NPROCESSORS_ONLN 2>/dev/null || echo 1`)))
17 PARALLEL_JOBS
:= $(BR2_JLEVEL
)
20 MAKE1
:= $(HOSTMAKE
) -j1
21 override MAKE
= $(HOSTMAKE
) \
22 $(if
$(findstring j
,$(filter-out --%,$(MAKEFLAGS
))),,-j
$(PARALLEL_JOBS
))
24 ifeq ($(BR2_TOOLCHAIN_BUILDROOT
),y
)
25 TARGET_VENDOR
= $(call qstrip
,$(BR2_TOOLCHAIN_BUILDROOT_VENDOR
))
27 TARGET_VENDOR
= buildroot
31 ifeq ($(TARGET_VENDOR
),)
32 $(error BR2_TOOLCHAIN_BUILDROOT_VENDOR is not allowed to be empty
)
34 ifeq ($(TARGET_VENDOR
),unknown
)
35 $(error BR2_TOOLCHAIN_BUILDROOT_VENDOR cannot be
'unknown'. \
36 It might be confused with the native toolchain
)
39 # Compute GNU_TARGET_NAME
40 GNU_TARGET_NAME
= $(ARCH
)-$(TARGET_VENDOR
)-$(TARGET_OS
)-$(LIBC
)$(ABI
)
42 # FLAT binary format needs uclinux
43 ifeq ($(BR2_BINFMT_FLAT
),y
)
49 ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC
),y
)
51 else ifeq ($(BR2_TOOLCHAIN_USES_MUSL
),y
)
57 # The ABI suffix is a bit special on ARM, as it needs to be
58 # -uclibcgnueabi for uClibc EABI, and -gnueabi for glibc EABI.
59 # This means that the LIBC and ABI aren't strictly orthogonal,
60 # which explains why we need the test on LIBC below.
61 ifeq ($(BR2_arm
)$(BR2_armeb
),y
)
68 ifeq ($(BR2_ARM_EABIHF
),y
)
73 # For FSL PowerPC there's SPE
74 ifeq ($(BR2_powerpc_SPE
),y
)
76 # MPC8540s are e500v1 with single precision FP
77 ifeq ($(BR2_powerpc_8540
),y
)
78 TARGET_ABI
+= -mabi
=spe
-mfloat-gprs
=single
-Wa
,-me500
80 ifeq ($(BR2_powerpc_8548
),y
)
81 TARGET_ABI
+= -mabi
=spe
-mfloat-gprs
=double
-Wa
,-me500x2
83 ifeq ($(BR2_powerpc_e500mc
),y
)
84 TARGET_ABI
+= -mabi
=spe
-mfloat-gprs
=double
-Wa
,-me500mc
88 # Use longcalls option for Xtensa globally.
89 # The 'longcalls' option allows calls across a greater range of addresses,
90 # and is required for some packages. While this option can degrade both
91 # code size and performance, the linker can usually optimize away the
92 # overhead when a call ends up within a certain range.
94 # Use auto-litpools for Xtensa globally.
95 # Collecting literals into separate section can be advantageous if that
96 # section is placed into DTCM at link time. This is applicable for code
97 # running on bare metal, but makes no sense under linux, where userspace
98 # is isolated from the physical memory details. OTOH placing literals into
99 # separate section breaks build of huge source files, because l32r
100 # instruction can only access literals in 256 KBytes range.
102 ifeq ($(BR2_xtensa
),y
)
103 TARGET_ABI
+= -mlongcalls
-mauto-litpools
106 ifeq ($(BR2_arc
)$(BR2_ARC_ATOMIC_EXT
),yy
)
107 TARGET_ABI
+= -matomic
110 STAGING_SUBDIR
= usr
/$(GNU_TARGET_NAME
)/sysroot
111 STAGING_DIR
= $(HOST_DIR
)/$(STAGING_SUBDIR
)
113 ifeq ($(BR2_OPTIMIZE_0
),y
)
114 TARGET_OPTIMIZATION
= -O0
116 ifeq ($(BR2_OPTIMIZE_1
),y
)
117 TARGET_OPTIMIZATION
= -O1
119 ifeq ($(BR2_OPTIMIZE_2
),y
)
120 TARGET_OPTIMIZATION
= -O2
122 ifeq ($(BR2_OPTIMIZE_3
),y
)
123 TARGET_OPTIMIZATION
= -O3
125 ifeq ($(BR2_OPTIMIZE_S
),y
)
126 TARGET_OPTIMIZATION
= -Os
128 ifeq ($(BR2_DEBUG_1
),y
)
129 TARGET_DEBUGGING
= -g1
131 ifeq ($(BR2_DEBUG_2
),y
)
132 TARGET_DEBUGGING
= -g2
134 ifeq ($(BR2_DEBUG_3
),y
)
135 TARGET_DEBUGGING
= -g3
138 TARGET_CPPFLAGS
+= -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS
=64
139 TARGET_CFLAGS
= $(TARGET_CPPFLAGS
) $(TARGET_ABI
) $(TARGET_OPTIMIZATION
) $(TARGET_DEBUGGING
)
140 TARGET_CXXFLAGS
= $(TARGET_CFLAGS
)
141 TARGET_LDFLAGS
= $(call qstrip
,$(BR2_TARGET_LDFLAGS
))
143 ifeq ($(BR2_BINFMT_FLAT
),y
)
144 TARGET_CFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),\
146 TARGET_CXXFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),\
148 TARGET_LDFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
)
151 ifeq ($(BR2_BINFMT_FLAT_SHARED
),y
)
152 TARGET_LDFLAGS
+= -mid-shared-library
-mshared-library-id
=0
153 TARGET_CFLAGS
+= -mid-shared-library
-mshared-library-id
=0
154 TARGET_CXXFLAGS
+= -mid-shared-library
-mshared-library-id
=0
156 ifeq ($(BR2_BINFMT_FLAT_SEP_DATA
),y
)
157 TARGET_LDFLAGS
+= -msep-data
158 TARGET_CFLAGS
+= -msep-data
159 TARGET_CXXFLAGS
+= -msep-data
162 ifeq ($(BR2_SSP_REGULAR
),y
)
163 TARGET_CFLAGS
+= -fstack-protector
164 TARGET_CXXFLAGS
+= -fstack-protector
165 else ifeq ($(BR2_SSP_STRONG
),y
)
166 TARGET_CFLAGS
+= -fstack-protector-strong
167 TARGET_CXXFLAGS
+= -fstack-protector-strong
168 else ifeq ($(BR2_SSP_ALL
),y
)
169 TARGET_CFLAGS
+= -fstack-protector-all
170 TARGET_CXXFLAGS
+= -fstack-protector-all
173 ifeq ($(BR2_TOOLCHAIN_BUILDROOT
),y
)
174 TARGET_CROSS
= $(HOST_DIR
)/usr
/bin
/$(GNU_TARGET_NAME
)-
176 TARGET_CROSS
= $(HOST_DIR
)/usr
/bin
/$(call qstrip
,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX
))-
179 # Define TARGET_xx variables for all common binutils/gcc
180 TARGET_AR
= $(TARGET_CROSS
)ar
181 TARGET_AS
= $(TARGET_CROSS
)as
182 TARGET_CC
= $(TARGET_CROSS
)gcc
183 TARGET_CPP
= $(TARGET_CROSS
)cpp
184 TARGET_CXX
= $(TARGET_CROSS
)g
++
185 TARGET_FC
= $(TARGET_CROSS
)gfortran
186 TARGET_LD
= $(TARGET_CROSS
)ld
187 TARGET_NM
= $(TARGET_CROSS
)nm
188 TARGET_RANLIB
= $(TARGET_CROSS
)ranlib
189 TARGET_READELF
= $(TARGET_CROSS
)readelf
190 TARGET_OBJCOPY
= $(TARGET_CROSS
)objcopy
191 TARGET_OBJDUMP
= $(TARGET_CROSS
)objdump
193 ifeq ($(BR2_STRIP_strip
),y
)
194 STRIP_STRIP_DEBUG
:= --strip-debug
195 STRIP_STRIP_UNNEEDED
:= --strip-unneeded
196 STRIP_STRIP_ALL
:= --strip-all
197 TARGET_STRIP
= $(TARGET_CROSS
)strip
198 STRIPCMD
= $(TARGET_CROSS
)strip --remove-section
=.comment
--remove-section
=.note
199 KSTRIPCMD
= $(STRIPCMD
) $(STRIP_STRIP_UNNEEDED
)
201 ifeq ($(BR2_STRIP_sstrip
),y
)
203 STRIP_STRIP_UNNEEDED
:=
205 TARGET_STRIP
= $(HOST_DIR
)/usr
/bin
/$(GNU_TARGET_NAME
)-sstrip
206 STRIPCMD
= $(TARGET_STRIP
)
207 KSTRIPCMD
= $(TARGET_CROSS
)strip --remove-section
=.comment
--remove-section
=.note
--strip-unneeded
209 ifeq ($(BR2_STRIP_none
),y
)
211 STRIPCMD
= $(TARGET_STRIP
)
212 KSTRIPCMD
= $(TARGET_STRIP
)
214 INSTALL
:= $(shell which
install || type
-p
install)
215 FLEX
:= $(shell which flex || type
-p flex
)
216 BISON
:= $(shell which bison || type
-p bison
)
217 SED
:= $(shell which sed || type
-p sed
) -i
-e
218 UNZIP
:= $(shell which unzip || type
-p unzip
) -q
220 APPLY_PATCHES
= support
/scripts
/apply-patches.sh
$(if
$(QUIET
),-s
)
222 HOST_CPPFLAGS
= -I
$(HOST_DIR
)/usr
/include
224 HOST_CFLAGS
+= $(HOST_CPPFLAGS
)
225 HOST_CXXFLAGS
+= $(HOST_CFLAGS
)
226 HOST_LDFLAGS
+= -L
$(HOST_DIR
)/lib
-L
$(HOST_DIR
)/usr
/lib
-Wl
,-rpath
,$(HOST_DIR
)/usr
/lib
228 # host-intltool should be executed with the system perl, so we save
229 # the path to the system perl, before a host-perl built by Buildroot
230 # might get installed into $(HOST_DIR)/usr/bin and therefore appears
231 # in our PATH. This system perl will be used as INTLTOOL_PERL.
232 export PERL
=$(shell which perl
)
234 # host-intltool needs libxml-parser-perl, which Buildroot installs in
235 # $(HOST_DIR)/usr/lib/perl, so we must make sure that the system perl
236 # finds this perl module by exporting the proper value for PERL5LIB.
237 export PERL5LIB
=$(HOST_DIR
)/usr
/lib
/perl
239 TARGET_CONFIGURE_OPTS
= \
247 CPP
="$(TARGET_CPP)" \
248 CXX
="$(TARGET_CXX)" \
250 RANLIB
="$(TARGET_RANLIB)" \
251 READELF
="$(TARGET_READELF)" \
252 STRIP
="$(TARGET_STRIP)" \
253 OBJCOPY
="$(TARGET_OBJCOPY)" \
254 OBJDUMP
="$(TARGET_OBJDUMP)" \
255 AR_FOR_BUILD
="$(HOSTAR)" \
256 AS_FOR_BUILD
="$(HOSTAS)" \
257 CC_FOR_BUILD
="$(HOSTCC)" \
258 GCC_FOR_BUILD
="$(HOSTCC)" \
259 CXX_FOR_BUILD
="$(HOSTCXX)" \
260 LD_FOR_BUILD
="$(HOSTLD)" \
261 CPPFLAGS_FOR_BUILD
="$(HOST_CPPFLAGS)" \
262 CFLAGS_FOR_BUILD
="$(HOST_CFLAGS)" \
263 CXXFLAGS_FOR_BUILD
="$(HOST_CXXFLAGS)" \
264 LDFLAGS_FOR_BUILD
="$(HOST_LDFLAGS)" \
265 FCFLAGS_FOR_BUILD
="$(HOST_FCFLAGS)" \
266 DEFAULT_ASSEMBLER
="$(TARGET_AS)" \
267 DEFAULT_LINKER
="$(TARGET_LD)" \
268 CPPFLAGS
="$(TARGET_CPPFLAGS)" \
269 CFLAGS
="$(TARGET_CFLAGS)" \
270 CXXFLAGS
="$(TARGET_CXXFLAGS)" \
271 LDFLAGS
="$(TARGET_LDFLAGS)" \
272 FCFLAGS
="$(TARGET_FCFLAGS)" \
273 PKG_CONFIG
="$(PKG_CONFIG_HOST_BINARY)" \
274 STAGING_DIR
="$(STAGING_DIR)" \
275 INTLTOOL_PERL
=$(PERL
)
277 TARGET_MAKE_ENV
= PATH
=$(BR_PATH
)
280 HOST_CONFIGURE_OPTS
= \
290 OBJCOPY
="$(HOSTOBJCOPY)" \
291 RANLIB
="$(HOSTRANLIB)" \
292 CPPFLAGS
="$(HOST_CPPFLAGS)" \
293 CFLAGS
="$(HOST_CFLAGS)" \
294 CXXFLAGS
="$(HOST_CXXFLAGS)" \
295 LDFLAGS
="$(HOST_LDFLAGS)" \
296 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS
=1 \
297 PKG_CONFIG_ALLOW_SYSTEM_LIBS
=1 \
298 PKG_CONFIG
="$(PKG_CONFIG_HOST_BINARY)" \
299 PKG_CONFIG_SYSROOT_DIR
="/" \
300 PKG_CONFIG_LIBDIR
="$(HOST_DIR)/usr/lib/pkgconfig:$(HOST_DIR)/usr/share/pkgconfig" \
301 INTLTOOL_PERL
=$(PERL
)
305 PKG_CONFIG
="$(PKG_CONFIG_HOST_BINARY)" \
306 PKG_CONFIG_SYSROOT_DIR
="/" \
307 PKG_CONFIG_LIBDIR
="$(HOST_DIR)/usr/lib/pkgconfig"
309 # This is extra environment we can not export ourselves (eg. because some
310 # packages use that variable internally, eg. uboot), so we have to
311 # explicitly pass it to user-supplied external hooks (eg. post-build,
315 BR2_DL_DIR
=$(BR2_DL_DIR
) \
316 BUILD_DIR
=$(BUILD_DIR
) \
317 BR2_EXTERNAL
=$(BR2_EXTERNAL
)
319 ################################################################################
320 # settings we need to pass to configure
322 # does unaligned access trap?
323 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=yes
325 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
327 ifeq ($(BR2_x86_64
),y
)
328 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
331 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
333 ifeq ($(BR2_powerpc
)$(BR2_powerpc64
)$(BR2_powerpc64le
),y
)
334 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
337 ifeq ($(BR2_ENDIAN
),"BIG")
338 BR2_AC_CV_C_BIGENDIAN
= ac_cv_c_bigendian
=yes
340 BR2_AC_CV_C_BIGENDIAN
= ac_cv_c_bigendian
=no
343 # AM_GNU_GETTEXT misdetects musl gettext support.
344 # musl currently implements api level 1 and 2 (basic + ngettext)
345 # http://www.openwall.com/lists/musl/2015/04/16/3
346 ifeq ($(BR2_TOOLCHAIN_USES_MUSL
),y
)
347 BR2_GT_CV_FUNC_GNUGETTEXT_LIBC
= \
348 gt_cv_func_gnugettext1_libc
=yes \
349 gt_cv_func_gnugettext2_libc
=yes
352 TARGET_CONFIGURE_ARGS
= \
353 $(BR2_AC_CV_TRAP_CHECK
) \
354 ac_cv_func_mmap_fixed_mapped
=yes \
355 ac_cv_func_memcmp_working
=yes \
356 ac_cv_have_decl_malloc
=yes \
357 gl_cv_func_malloc_0_nonnull
=yes \
358 ac_cv_func_malloc_0_nonnull
=yes \
359 ac_cv_func_calloc_0_nonnull
=yes \
360 ac_cv_func_realloc_0_nonnull
=yes \
361 lt_cv_sys_lib_search_path_spec
="" \
362 $(BR2_AC_CV_C_BIGENDIAN
) \
363 $(BR2_GT_CV_FUNC_GNUGETTEXT_LIBC
)
365 ################################################################################
367 ifeq ($(BR2_ENABLE_LOCALE
),y
)
370 DISABLE_NLS
:=--disable-nls
373 ifneq ($(BR2_INSTALL_LIBSTDCPP
),y
)
374 TARGET_CONFIGURE_OPTS
+= CXX
=false
377 ifeq ($(BR2_STATIC_LIBS
),y
)
378 SHARED_STATIC_LIBS_OPTS
= --enable-static
--disable-shared
379 TARGET_CFLAGS
+= -static
380 TARGET_CXXFLAGS
+= -static
381 TARGET_LDFLAGS
+= -static
382 else ifeq ($(BR2_SHARED_LIBS
),y
)
383 SHARED_STATIC_LIBS_OPTS
= --disable-static
--enable-shared
384 else ifeq ($(BR2_SHARED_STATIC_LIBS
),y
)
385 SHARED_STATIC_LIBS_OPTS
= --enable-static
--enable-shared
388 ifeq ($(BR2_COMPILER_PARANOID_UNSAFE_PATH
),y
)
389 export BR_COMPILER_PARANOID_UNSAFE_PATH
=enabled
392 include package
/pkg-download.mk
393 include package
/pkg-autotools.mk
394 include package
/pkg-cmake.mk
395 include package
/pkg-luarocks.mk
396 include package
/pkg-perl.mk
397 include package
/pkg-python.mk
398 include package
/pkg-virtual.mk
399 include package
/pkg-generic.mk
400 include package
/pkg-kconfig.mk
401 include package
/pkg-rebar.mk
402 include package
/pkg-kernel-module.mk