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 = $(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_OPTIMIZE_FAST),y)
132 TARGET_OPTIMIZATION = -Ofast
134 ifeq ($(BR2_DEBUG_1),y)
135 TARGET_DEBUGGING = -g1
137 ifeq ($(BR2_DEBUG_2),y)
138 TARGET_DEBUGGING = -g2
140 ifeq ($(BR2_DEBUG_3),y)
141 TARGET_DEBUGGING = -g3
144 TARGET_CFLAGS_RELRO = -Wl,-z,relro
145 TARGET_CFLAGS_RELRO_FULL = -Wl,-z,now $(TARGET_CFLAGS_RELRO)
147 TARGET_LDFLAGS = $(call qstrip,$(BR2_TARGET_LDFLAGS))
149 ifeq ($(BR2_SSP_REGULAR),y)
150 TARGET_CPPFLAGS += -fstack-protector
151 else ifeq ($(BR2_SSP_STRONG),y)
152 TARGET_CPPFLAGS += -fstack-protector-strong
153 else ifeq ($(BR2_SSP_ALL),y)
154 TARGET_CPPFLAGS += -fstack-protector-all
157 ifeq ($(BR2_RELRO_PARTIAL),y)
158 TARGET_CPPFLAGS += $(TARGET_CFLAGS_RELRO)
159 TARGET_LDFLAGS += $(TARGET_CFLAGS_RELRO)
160 else ifeq ($(BR2_RELRO_FULL),y)
161 TARGET_CPPFLAGS += -fPIE $(TARGET_CFLAGS_RELRO_FULL)
162 TARGET_LDFLAGS += -pie
165 ifeq ($(BR2_FORTIFY_SOURCE_1),y)
166 TARGET_CPPFLAGS += -D_FORTIFY_SOURCE=1
167 else ifeq ($(BR2_FORTIFY_SOURCE_2),y)
168 TARGET_CPPFLAGS += -D_FORTIFY_SOURCE=2
171 TARGET_CPPFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
172 TARGET_CFLAGS = $(TARGET_CPPFLAGS) $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
173 TARGET_CXXFLAGS = $(TARGET_CFLAGS)
174 TARGET_FCFLAGS = $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
176 ifeq ($(BR2_BINFMT_FLAT),y)
177 TARGET_CFLAGS += $(if $($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt=-s$($(PKG)_FLAT_STACKSIZE),\
179 TARGET_CXXFLAGS += $(if $($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt=-s$($(PKG)_FLAT_STACKSIZE),\
181 TARGET_FCFLAGS += $(if $($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt=-s$($(PKG)_FLAT_STACKSIZE),\
183 TARGET_LDFLAGS += $(if $($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt=-s$($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt)
186 ifeq ($(BR2_BINFMT_FLAT_SHARED),y)
187 TARGET_LDFLAGS += -mid-shared-library -mshared-library-id=0
188 TARGET_CFLAGS += -mid-shared-library -mshared-library-id=0
189 TARGET_FCFLAGS += -mid-shared-library -mshared-library-id=0
190 TARGET_CXXFLAGS += -mid-shared-library -mshared-library-id=0
192 ifeq ($(BR2_BINFMT_FLAT_SEP_DATA),y)
193 TARGET_LDFLAGS += -msep-data
194 TARGET_CFLAGS += -msep-data
195 TARGET_FCFLAGS += -msep-data
196 TARGET_CXXFLAGS += -msep-data
199 ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
200 TARGET_CROSS = $(HOST_DIR)/bin/$(GNU_TARGET_NAME)-
202 TARGET_CROSS = $(HOST_DIR)/bin/$(TOOLCHAIN_EXTERNAL_PREFIX)-
205 # Define TARGET_xx variables for all common binutils/gcc
206 TARGET_AR = $(TARGET_CROSS)ar
207 TARGET_AS = $(TARGET_CROSS)as
208 TARGET_CC = $(TARGET_CROSS)gcc
209 TARGET_CPP = $(TARGET_CROSS)cpp
210 TARGET_CXX = $(TARGET_CROSS)g++
211 TARGET_FC = $(TARGET_CROSS)gfortran
212 TARGET_LD = $(TARGET_CROSS)ld
213 TARGET_NM = $(TARGET_CROSS)nm
214 TARGET_RANLIB = $(TARGET_CROSS)ranlib
215 TARGET_READELF = $(TARGET_CROSS)readelf
216 TARGET_OBJCOPY = $(TARGET_CROSS)objcopy
217 TARGET_OBJDUMP = $(TARGET_CROSS)objdump
219 ifeq ($(BR2_STRIP_strip),y)
220 STRIP_STRIP_DEBUG := --strip-debug
221 TARGET_STRIP = $(TARGET_CROSS)strip
222 STRIPCMD = $(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note
224 TARGET_STRIP = /bin/true
225 STRIPCMD = $(TARGET_STRIP)
227 INSTALL := $(shell which install || type -p install)
228 FLEX := $(shell which flex || type -p flex)
229 BISON := $(shell which bison || type -p bison)
230 UNZIP := $(shell which unzip || type -p unzip) -q
232 APPLY_PATCHES = PATH=$(HOST_DIR)/bin:$$PATH support/scripts/apply-patches.sh $(if $(QUIET),-s)
234 HOST_CPPFLAGS = -I$(HOST_DIR)/include
236 HOST_CFLAGS += $(HOST_CPPFLAGS)
237 HOST_CXXFLAGS += $(HOST_CFLAGS)
238 HOST_LDFLAGS += -L$(HOST_DIR)/lib -Wl,-rpath,$(HOST_DIR)/lib
240 # The macros below are taken from linux 4.11 and adapted slightly.
241 # Copy more when needed.
244 # Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise)
245 # Exit code chooses option. "$$TMP" is can be used as temporary file and
246 # is automatically cleaned up.
247 try-run = $(shell set -e; \
248 TMP="$$(tempfile)"; \
249 if ($(1)) >/dev/null 2>&1; \
256 # Usage: HOST_FOO_CFLAGS += $(call host-cc-option,-no-pie,)
257 host-cc-option = $(call try-run,\
258 $(HOSTCC) $(HOST_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))
261 # host-intltool should be executed with the system perl, so we save
262 # the path to the system perl, before a host-perl built by Buildroot
263 # might get installed into $(HOST_DIR)/bin and therefore appears
264 # in our PATH. This system perl will be used as INTLTOOL_PERL.
265 export PERL=$(shell which perl)
267 # host-intltool needs libxml-parser-perl, which Buildroot installs in
268 # $(HOST_DIR)/lib/perl, so we must make sure that the system perl
269 # finds this perl module by exporting the proper value for PERL5LIB.
270 export PERL5LIB=$(HOST_DIR)/lib/perl
272 TARGET_MAKE_ENV = PATH=$(BR_PATH)
274 TARGET_CONFIGURE_OPTS = \
282 CPP="$(TARGET_CPP)" \
283 CXX="$(TARGET_CXX)" \
286 RANLIB="$(TARGET_RANLIB)" \
287 READELF="$(TARGET_READELF)" \
288 STRIP="$(TARGET_STRIP)" \
289 OBJCOPY="$(TARGET_OBJCOPY)" \
290 OBJDUMP="$(TARGET_OBJDUMP)" \
291 AR_FOR_BUILD="$(HOSTAR)" \
292 AS_FOR_BUILD="$(HOSTAS)" \
293 CC_FOR_BUILD="$(HOSTCC)" \
294 GCC_FOR_BUILD="$(HOSTCC)" \
295 CXX_FOR_BUILD="$(HOSTCXX)" \
296 LD_FOR_BUILD="$(HOSTLD)" \
297 CPPFLAGS_FOR_BUILD="$(HOST_CPPFLAGS)" \
298 CFLAGS_FOR_BUILD="$(HOST_CFLAGS)" \
299 CXXFLAGS_FOR_BUILD="$(HOST_CXXFLAGS)" \
300 LDFLAGS_FOR_BUILD="$(HOST_LDFLAGS)" \
301 FCFLAGS_FOR_BUILD="$(HOST_FCFLAGS)" \
302 DEFAULT_ASSEMBLER="$(TARGET_AS)" \
303 DEFAULT_LINKER="$(TARGET_LD)" \
304 CPPFLAGS="$(TARGET_CPPFLAGS)" \
305 CFLAGS="$(TARGET_CFLAGS)" \
306 CXXFLAGS="$(TARGET_CXXFLAGS)" \
307 LDFLAGS="$(TARGET_LDFLAGS)" \
308 FCFLAGS="$(TARGET_FCFLAGS)" \
309 FFLAGS="$(TARGET_FCFLAGS)" \
310 PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
311 STAGING_DIR="$(STAGING_DIR)" \
312 INTLTOOL_PERL=$(PERL)
317 PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
318 PKG_CONFIG_SYSROOT_DIR="/" \
319 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \
320 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \
321 PKG_CONFIG_LIBDIR="$(HOST_DIR)/lib/pkgconfig:$(HOST_DIR)/share/pkgconfig"
323 HOST_CONFIGURE_OPTS = \
333 OBJCOPY="$(HOSTOBJCOPY)" \
334 RANLIB="$(HOSTRANLIB)" \
335 CPPFLAGS="$(HOST_CPPFLAGS)" \
336 CFLAGS="$(HOST_CFLAGS)" \
337 CXXFLAGS="$(HOST_CXXFLAGS)" \
338 LDFLAGS="$(HOST_LDFLAGS)" \
339 INTLTOOL_PERL=$(PERL)
341 # This is extra environment we can not export ourselves (eg. because some
342 # packages use that variable internally, eg. uboot), so we have to
343 # explicitly pass it to user-supplied external hooks (eg. post-build,
347 BR2_DL_DIR=$(BR2_DL_DIR) \
348 BUILD_DIR=$(BUILD_DIR) \
351 ################################################################################
352 # settings we need to pass to configure
354 # does unaligned access trap?
355 BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=yes
357 BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
359 ifeq ($(BR2_x86_64),y)
360 BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
363 BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
365 ifeq ($(BR2_powerpc)$(BR2_powerpc64)$(BR2_powerpc64le),y)
366 BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
369 ifeq ($(BR2_ENDIAN),"BIG")
370 BR2_AC_CV_C_BIGENDIAN = ac_cv_c_bigendian=yes
372 BR2_AC_CV_C_BIGENDIAN = ac_cv_c_bigendian=no
375 # AM_GNU_GETTEXT misdetects musl gettext support.
376 # musl currently implements api level 1 and 2 (basic + ngettext)
377 # http://www.openwall.com/lists/musl/2015/04/16/3
379 # These autoconf variables should only be pre-seeded when the minimal
380 # gettext implementation of musl is used. When the full blown
381 # implementation provided by gettext libintl is used, auto-detection
382 # works fine, and pre-seeding those values is actually wrong.
383 ifeq ($(BR2_TOOLCHAIN_USES_MUSL):$(BR2_PACKAGE_GETTEXT_PROVIDES_LIBINTL),y:)
384 BR2_GT_CV_FUNC_GNUGETTEXT_LIBC = \
385 gt_cv_func_gnugettext1_libc=yes \
386 gt_cv_func_gnugettext2_libc=yes
389 TARGET_CONFIGURE_ARGS = \
390 $(BR2_AC_CV_TRAP_CHECK) \
391 ac_cv_func_mmap_fixed_mapped=yes \
392 ac_cv_func_memcmp_working=yes \
393 ac_cv_have_decl_malloc=yes \
394 gl_cv_func_malloc_0_nonnull=yes \
395 ac_cv_func_malloc_0_nonnull=yes \
396 ac_cv_func_calloc_0_nonnull=yes \
397 ac_cv_func_realloc_0_nonnull=yes \
398 lt_cv_sys_lib_search_path_spec="" \
399 $(BR2_AC_CV_C_BIGENDIAN) \
400 $(BR2_GT_CV_FUNC_GNUGETTEXT_LIBC)
402 ################################################################################
404 ifeq ($(BR2_SYSTEM_ENABLE_NLS),y)
405 NLS_OPTS = --enable-nls
406 TARGET_NLS_DEPENDENCIES = host-gettext
407 ifeq ($(BR2_PACKAGE_GETTEXT_PROVIDES_LIBINTL),y)
408 TARGET_NLS_DEPENDENCIES += gettext
409 TARGET_NLS_LIBS += -lintl
412 NLS_OPTS = --disable-nls
415 ifneq ($(BR2_INSTALL_LIBSTDCPP),y)
416 TARGET_CONFIGURE_OPTS += CXX=false CXXCPP=cpp
419 ifeq ($(BR2_STATIC_LIBS),y)
420 SHARED_STATIC_LIBS_OPTS = --enable-static --disable-shared
421 TARGET_CFLAGS += -static
422 TARGET_CXXFLAGS += -static
423 TARGET_FCFLAGS += -static
424 TARGET_LDFLAGS += -static
425 else ifeq ($(BR2_SHARED_LIBS),y)
426 SHARED_STATIC_LIBS_OPTS = --disable-static --enable-shared
427 else ifeq ($(BR2_SHARED_STATIC_LIBS),y)
428 SHARED_STATIC_LIBS_OPTS = --enable-static --enable-shared
431 ifeq ($(BR2_COMPILER_PARANOID_UNSAFE_PATH),y)
432 export BR_COMPILER_PARANOID_UNSAFE_PATH=enabled
435 include package/pkg-download.mk
436 include package/pkg-autotools.mk
437 include package/pkg-cmake.mk
438 include package/pkg-luarocks.mk
439 include package/pkg-perl.mk
440 include package/pkg-python.mk
441 include package/pkg-virtual.mk
442 include package/pkg-generic.mk
443 include package/pkg-kconfig.mk
444 include package/pkg-rebar.mk
445 include package/pkg-kernel-module.mk
446 include package/pkg-waf.mk