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 ($(BR2_OPTIMIZE_G
),y
)
126 TARGET_OPTIMIZATION
= -Og
128 ifeq ($(BR2_OPTIMIZE_S
),y
)
129 TARGET_OPTIMIZATION
= -Os
131 ifeq ($(BR2_DEBUG_1
),y
)
132 TARGET_DEBUGGING
= -g1
134 ifeq ($(BR2_DEBUG_2
),y
)
135 TARGET_DEBUGGING
= -g2
137 ifeq ($(BR2_DEBUG_3
),y
)
138 TARGET_DEBUGGING
= -g3
141 TARGET_CPPFLAGS
+= -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS
=64
142 TARGET_CFLAGS
= $(TARGET_CPPFLAGS
) $(TARGET_ABI
) $(TARGET_OPTIMIZATION
) $(TARGET_DEBUGGING
)
143 TARGET_CXXFLAGS
= $(TARGET_CFLAGS
)
144 TARGET_FCFLAGS
= $(TARGET_ABI
) $(TARGET_OPTIMIZATION
) $(TARGET_DEBUGGING
)
145 TARGET_LDFLAGS
= $(call qstrip
,$(BR2_TARGET_LDFLAGS
))
147 ifeq ($(BR2_BINFMT_FLAT
),y
)
148 TARGET_CFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),\
150 TARGET_CXXFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),\
152 TARGET_FCFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),\
154 TARGET_LDFLAGS
+= $(if
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
=-s
$($(PKG
)_FLAT_STACKSIZE
),-Wl
$(comma
)-elf2flt
)
157 ifeq ($(BR2_BINFMT_FLAT_SHARED
),y
)
158 TARGET_LDFLAGS
+= -mid-shared-library
-mshared-library-id
=0
159 TARGET_CFLAGS
+= -mid-shared-library
-mshared-library-id
=0
160 TARGET_FCFLAGS
+= -mid-shared-library
-mshared-library-id
=0
161 TARGET_CXXFLAGS
+= -mid-shared-library
-mshared-library-id
=0
163 ifeq ($(BR2_BINFMT_FLAT_SEP_DATA
),y
)
164 TARGET_LDFLAGS
+= -msep-data
165 TARGET_CFLAGS
+= -msep-data
166 TARGET_FCFLAGS
+= -msep-data
167 TARGET_CXXFLAGS
+= -msep-data
170 ifeq ($(BR2_SSP_REGULAR
),y
)
171 TARGET_CFLAGS
+= -fstack-protector
172 TARGET_CXXFLAGS
+= -fstack-protector
173 TARGET_FCFLAGS
+= -fstack-protector
174 else ifeq ($(BR2_SSP_STRONG
),y
)
175 TARGET_CFLAGS
+= -fstack-protector-strong
176 TARGET_CXXFLAGS
+= -fstack-protector-strong
177 TARGET_FCFLAGS
+= -fstack-protector-strong
178 else ifeq ($(BR2_SSP_ALL
),y
)
179 TARGET_CFLAGS
+= -fstack-protector-all
180 TARGET_CXXFLAGS
+= -fstack-protector-all
181 TARGET_FCFLAGS
+= -fstack-protector-all
184 ifeq ($(BR2_TOOLCHAIN_BUILDROOT
),y
)
185 TARGET_CROSS
= $(HOST_DIR
)/usr
/bin
/$(GNU_TARGET_NAME
)-
187 TARGET_CROSS
= $(HOST_DIR
)/usr
/bin
/$(call qstrip
,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX
))-
190 # Define TARGET_xx variables for all common binutils/gcc
191 TARGET_AR
= $(TARGET_CROSS
)ar
192 TARGET_AS
= $(TARGET_CROSS
)as
193 TARGET_CC
= $(TARGET_CROSS
)gcc
194 TARGET_CPP
= $(TARGET_CROSS
)cpp
195 TARGET_CXX
= $(TARGET_CROSS
)g
++
196 TARGET_FC
= $(TARGET_CROSS
)gfortran
197 TARGET_LD
= $(TARGET_CROSS
)ld
198 TARGET_NM
= $(TARGET_CROSS
)nm
199 TARGET_RANLIB
= $(TARGET_CROSS
)ranlib
200 TARGET_READELF
= $(TARGET_CROSS
)readelf
201 TARGET_OBJCOPY
= $(TARGET_CROSS
)objcopy
202 TARGET_OBJDUMP
= $(TARGET_CROSS
)objdump
204 ifeq ($(BR2_STRIP_strip
),y
)
205 STRIP_STRIP_DEBUG
:= --strip-debug
206 STRIP_STRIP_UNNEEDED
:= --strip-unneeded
207 STRIP_STRIP_ALL
:= --strip-all
208 TARGET_STRIP
= $(TARGET_CROSS
)strip
209 STRIPCMD
= $(TARGET_CROSS
)strip --remove-section
=.comment
--remove-section
=.note
210 KSTRIPCMD
= $(STRIPCMD
) $(STRIP_STRIP_UNNEEDED
)
212 ifeq ($(BR2_STRIP_none
),y
)
214 STRIPCMD
= $(TARGET_STRIP
)
215 KSTRIPCMD
= $(TARGET_STRIP
)
217 INSTALL
:= $(shell which
install || type
-p
install)
218 FLEX
:= $(shell which flex || type
-p flex
)
219 BISON
:= $(shell which bison || type
-p bison
)
220 SED
:= $(shell which sed || type
-p sed
) -i
-e
221 UNZIP
:= $(shell which unzip || type
-p unzip
) -q
223 APPLY_PATCHES
= support
/scripts
/apply-patches.sh
$(if
$(QUIET
),-s
)
225 HOST_CPPFLAGS
= -I
$(HOST_DIR
)/usr
/include
227 HOST_CFLAGS
+= $(HOST_CPPFLAGS
)
228 HOST_CXXFLAGS
+= $(HOST_CFLAGS
)
229 HOST_LDFLAGS
+= -L
$(HOST_DIR
)/lib
-L
$(HOST_DIR
)/usr
/lib
-Wl
,-rpath
,$(HOST_DIR
)/usr
/lib
231 # host-intltool should be executed with the system perl, so we save
232 # the path to the system perl, before a host-perl built by Buildroot
233 # might get installed into $(HOST_DIR)/usr/bin and therefore appears
234 # in our PATH. This system perl will be used as INTLTOOL_PERL.
235 export PERL
=$(shell which perl
)
237 # host-intltool needs libxml-parser-perl, which Buildroot installs in
238 # $(HOST_DIR)/usr/lib/perl, so we must make sure that the system perl
239 # finds this perl module by exporting the proper value for PERL5LIB.
240 export PERL5LIB
=$(HOST_DIR
)/usr
/lib
/perl
242 TARGET_CONFIGURE_OPTS
= \
250 CPP
="$(TARGET_CPP)" \
251 CXX
="$(TARGET_CXX)" \
254 RANLIB
="$(TARGET_RANLIB)" \
255 READELF
="$(TARGET_READELF)" \
256 STRIP
="$(TARGET_STRIP)" \
257 OBJCOPY
="$(TARGET_OBJCOPY)" \
258 OBJDUMP
="$(TARGET_OBJDUMP)" \
259 AR_FOR_BUILD
="$(HOSTAR)" \
260 AS_FOR_BUILD
="$(HOSTAS)" \
261 CC_FOR_BUILD
="$(HOSTCC)" \
262 GCC_FOR_BUILD
="$(HOSTCC)" \
263 CXX_FOR_BUILD
="$(HOSTCXX)" \
264 LD_FOR_BUILD
="$(HOSTLD)" \
265 CPPFLAGS_FOR_BUILD
="$(HOST_CPPFLAGS)" \
266 CFLAGS_FOR_BUILD
="$(HOST_CFLAGS)" \
267 CXXFLAGS_FOR_BUILD
="$(HOST_CXXFLAGS)" \
268 LDFLAGS_FOR_BUILD
="$(HOST_LDFLAGS)" \
269 FCFLAGS_FOR_BUILD
="$(HOST_FCFLAGS)" \
270 DEFAULT_ASSEMBLER
="$(TARGET_AS)" \
271 DEFAULT_LINKER
="$(TARGET_LD)" \
272 CPPFLAGS
="$(TARGET_CPPFLAGS)" \
273 CFLAGS
="$(TARGET_CFLAGS)" \
274 CXXFLAGS
="$(TARGET_CXXFLAGS)" \
275 LDFLAGS
="$(TARGET_LDFLAGS)" \
276 FCFLAGS
="$(TARGET_FCFLAGS)" \
277 FFLAGS
="$(TARGET_FCFLAGS)" \
278 PKG_CONFIG
="$(PKG_CONFIG_HOST_BINARY)" \
279 STAGING_DIR
="$(STAGING_DIR)" \
280 INTLTOOL_PERL
=$(PERL
)
282 TARGET_MAKE_ENV
= PATH
=$(BR_PATH
)
285 HOST_CONFIGURE_OPTS
= \
295 OBJCOPY
="$(HOSTOBJCOPY)" \
296 RANLIB
="$(HOSTRANLIB)" \
297 CPPFLAGS
="$(HOST_CPPFLAGS)" \
298 CFLAGS
="$(HOST_CFLAGS)" \
299 CXXFLAGS
="$(HOST_CXXFLAGS)" \
300 LDFLAGS
="$(HOST_LDFLAGS)" \
301 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS
=1 \
302 PKG_CONFIG_ALLOW_SYSTEM_LIBS
=1 \
303 PKG_CONFIG
="$(PKG_CONFIG_HOST_BINARY)" \
304 PKG_CONFIG_SYSROOT_DIR
="/" \
305 PKG_CONFIG_LIBDIR
="$(HOST_DIR)/usr/lib/pkgconfig:$(HOST_DIR)/usr/share/pkgconfig" \
306 INTLTOOL_PERL
=$(PERL
)
310 PKG_CONFIG
="$(PKG_CONFIG_HOST_BINARY)" \
311 PKG_CONFIG_SYSROOT_DIR
="/" \
312 PKG_CONFIG_LIBDIR
="$(HOST_DIR)/usr/lib/pkgconfig"
314 # This is extra environment we can not export ourselves (eg. because some
315 # packages use that variable internally, eg. uboot), so we have to
316 # explicitly pass it to user-supplied external hooks (eg. post-build,
320 BR2_DL_DIR
=$(BR2_DL_DIR
) \
321 BUILD_DIR
=$(BUILD_DIR
) \
322 BR2_EXTERNAL
=$(BR2_EXTERNAL
)
324 ################################################################################
325 # settings we need to pass to configure
327 # does unaligned access trap?
328 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=yes
330 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
332 ifeq ($(BR2_x86_64
),y
)
333 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
336 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
338 ifeq ($(BR2_powerpc
)$(BR2_powerpc64
)$(BR2_powerpc64le
),y
)
339 BR2_AC_CV_TRAP_CHECK
= ac_cv_lbl_unaligned_fail
=no
342 ifeq ($(BR2_ENDIAN
),"BIG")
343 BR2_AC_CV_C_BIGENDIAN
= ac_cv_c_bigendian
=yes
345 BR2_AC_CV_C_BIGENDIAN
= ac_cv_c_bigendian
=no
348 # AM_GNU_GETTEXT misdetects musl gettext support.
349 # musl currently implements api level 1 and 2 (basic + ngettext)
350 # http://www.openwall.com/lists/musl/2015/04/16/3
351 ifeq ($(BR2_TOOLCHAIN_USES_MUSL
),y
)
352 BR2_GT_CV_FUNC_GNUGETTEXT_LIBC
= \
353 gt_cv_func_gnugettext1_libc
=yes \
354 gt_cv_func_gnugettext2_libc
=yes
357 TARGET_CONFIGURE_ARGS
= \
358 $(BR2_AC_CV_TRAP_CHECK
) \
359 ac_cv_func_mmap_fixed_mapped
=yes \
360 ac_cv_func_memcmp_working
=yes \
361 ac_cv_have_decl_malloc
=yes \
362 gl_cv_func_malloc_0_nonnull
=yes \
363 ac_cv_func_malloc_0_nonnull
=yes \
364 ac_cv_func_calloc_0_nonnull
=yes \
365 ac_cv_func_realloc_0_nonnull
=yes \
366 lt_cv_sys_lib_search_path_spec
="" \
367 $(BR2_AC_CV_C_BIGENDIAN
) \
368 $(BR2_GT_CV_FUNC_GNUGETTEXT_LIBC
)
370 ################################################################################
372 ifeq ($(BR2_ENABLE_LOCALE
),y
)
375 DISABLE_NLS
:=--disable-nls
378 ifneq ($(BR2_INSTALL_LIBSTDCPP
),y
)
379 TARGET_CONFIGURE_OPTS
+= CXX
=false
382 ifeq ($(BR2_STATIC_LIBS
),y
)
383 SHARED_STATIC_LIBS_OPTS
= --enable-static
--disable-shared
384 TARGET_CFLAGS
+= -static
385 TARGET_CXXFLAGS
+= -static
386 TARGET_FCFLAGS
+= -static
387 TARGET_LDFLAGS
+= -static
388 else ifeq ($(BR2_SHARED_LIBS
),y
)
389 SHARED_STATIC_LIBS_OPTS
= --disable-static
--enable-shared
390 else ifeq ($(BR2_SHARED_STATIC_LIBS
),y
)
391 SHARED_STATIC_LIBS_OPTS
= --enable-static
--enable-shared
394 ifeq ($(BR2_COMPILER_PARANOID_UNSAFE_PATH
),y
)
395 export BR_COMPILER_PARANOID_UNSAFE_PATH
=enabled
398 include package
/pkg-download.mk
399 include package
/pkg-autotools.mk
400 include package
/pkg-cmake.mk
401 include package
/pkg-luarocks.mk
402 include package
/pkg-perl.mk
403 include package
/pkg-python.mk
404 include package
/pkg-virtual.mk
405 include package
/pkg-generic.mk
406 include package
/pkg-kconfig.mk
407 include package
/pkg-rebar.mk
408 include package
/pkg-kernel-module.mk