mirror of
https://git.busybox.net/buildroot.git
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d75e29c9b2
Linux on ARM supports FDPIC binaries intended for use on no-MMU systems. This patch enables support for building a toolchain that produces FDPIC binaries, only for ARMv7-M platforms, for which FDPIC binaries are relevant. The target name for a FDPIC toolchain must be arm-<vendor>-uclinuxfdpiceabi, which doesn't follow the standard format and requires a special case. Signed-off-by: Ben Wolsieffer <Ben.Wolsieffer@hefring.com> Signed-off-by: Waldemar Brodkorb <wbx@openadk.org> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
469 lines
15 KiB
Makefile
469 lines
15 KiB
Makefile
ifndef MAKE
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MAKE := make
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endif
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ifndef HOSTMAKE
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HOSTMAKE = $(MAKE)
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endif
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HOSTMAKE := $(shell which $(HOSTMAKE) || type -p $(HOSTMAKE) || echo make)
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# If BR2_JLEVEL is 0, scale the maximum concurrency with the number of
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# CPUs. An additional job is used in order to keep processors busy
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# while waiting on I/O.
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# If the number of processors is not available, assume one.
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ifeq ($(BR2_JLEVEL),0)
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PARALLEL_JOBS := $(shell echo \
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$$((1 + `getconf _NPROCESSORS_ONLN 2>/dev/null || echo 1`)))
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else
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PARALLEL_JOBS := $(BR2_JLEVEL)
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endif
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# Only build one job at a time, *and* to not randomise goals and
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# prerequisites ordering in make 4.4+
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MAKE1 := $(HOSTMAKE) -j1 $(if $(findstring --shuffle,$(MAKEFLAGS)),--shuffle=none)
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override MAKE = $(HOSTMAKE) \
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$(if $(findstring j,$(filter-out --%,$(MAKEFLAGS))),,-j$(PARALLEL_JOBS))
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
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TARGET_VENDOR = $(call qstrip,$(BR2_TOOLCHAIN_BUILDROOT_VENDOR))
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else
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TARGET_VENDOR = buildroot
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endif
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# Sanity checks
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ifeq ($(TARGET_VENDOR),)
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$(error BR2_TOOLCHAIN_BUILDROOT_VENDOR is not allowed to be empty)
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endif
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ifeq ($(TARGET_VENDOR),unknown)
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$(error BR2_TOOLCHAIN_BUILDROOT_VENDOR cannot be 'unknown'. \
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It might be confused with the native toolchain)
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endif
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# Compute GNU_TARGET_NAME
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# FDPIC on ARM requires a special target name: it has no OS field and must
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# use the suffix -uclinuxfdpiceabi.
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ifeq ($(BR2_arm)$(BR2_armeb):$(BR2_BINFMT_FDPIC),y:y)
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GNU_TARGET_NAME = $(ARCH)-$(TARGET_VENDOR)-uclinuxfdpiceabi
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else
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GNU_TARGET_NAME = $(ARCH)-$(TARGET_VENDOR)-$(TARGET_OS)-$(LIBC)$(ABI)
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endif
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# FLAT binary format needs uclinux, except RISC-V which needs the
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# regular linux name.
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ifeq ($(BR2_BINFMT_FLAT):$(BR2_riscv),y:)
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TARGET_OS = uclinux
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else
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TARGET_OS = linux
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endif
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ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)
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LIBC = uclibc
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else ifeq ($(BR2_TOOLCHAIN_USES_MUSL),y)
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LIBC = musl
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else ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
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LIBC = gnu
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else ifeq ($(BR_BUILDING),y)
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# This happens if there is a bug in Buildroot that allows an
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# architecture configuration that isn't supported by any library.
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$(error No C library enabled, this is not possible.)
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endif
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# The ABI suffix is a bit special on ARM, as it needs to be
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# -uclibcgnueabi for uClibc EABI, and -gnueabi for glibc EABI.
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# This means that the LIBC and ABI aren't strictly orthogonal,
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# which explains why we need the test on LIBC below.
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ifeq ($(BR2_arm)$(BR2_armeb),y)
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ifeq ($(LIBC),uclibc)
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ABI = gnueabi
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else
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ABI = eabi
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endif
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ifeq ($(BR2_ARM_EABIHF),y)
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ABI := $(ABI)hf
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endif
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endif
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# For FSL PowerPC there's SPE
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ifeq ($(BR2_POWERPC_CPU_HAS_SPE),y)
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ABI = spe
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# MPC8540s are e500v1 with single precision FP
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ifeq ($(BR2_powerpc_8540),y)
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TARGET_ABI += -mabi=spe -mfloat-gprs=single -Wa,-me500
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endif
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ifeq ($(BR2_powerpc_8548),y)
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TARGET_ABI += -mabi=spe -mfloat-gprs=double -Wa,-me500x2
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endif
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ifeq ($(BR2_powerpc_e500mc),y)
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TARGET_ABI += -mabi=spe -mfloat-gprs=double -Wa,-me500mc
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endif
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endif
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# Use longcalls option for Xtensa globally.
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# The 'longcalls' option allows calls across a greater range of addresses,
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# and is required for some packages. While this option can degrade both
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# code size and performance, the linker can usually optimize away the
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# overhead when a call ends up within a certain range.
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#
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# Use auto-litpools for Xtensa globally.
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# Collecting literals into separate section can be advantageous if that
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# section is placed into DTCM at link time. This is applicable for code
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# running on bare metal, but makes no sense under linux, where userspace
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# is isolated from the physical memory details. OTOH placing literals into
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# separate section breaks build of huge source files, because l32r
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# instruction can only access literals in 256 KBytes range.
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#
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ifeq ($(BR2_xtensa),y)
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TARGET_ABI += -mlongcalls -mauto-litpools
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endif
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STAGING_SUBDIR = $(GNU_TARGET_NAME)/sysroot
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STAGING_DIR = $(HOST_DIR)/$(STAGING_SUBDIR)
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ifeq ($(BR2_OPTIMIZE_0),y)
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TARGET_OPTIMIZATION = -O0
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endif
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ifeq ($(BR2_OPTIMIZE_1),y)
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TARGET_OPTIMIZATION = -O1
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endif
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ifeq ($(BR2_OPTIMIZE_2),y)
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TARGET_OPTIMIZATION = -O2
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endif
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ifeq ($(BR2_OPTIMIZE_3),y)
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TARGET_OPTIMIZATION = -O3
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endif
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ifeq ($(BR2_OPTIMIZE_G),y)
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TARGET_OPTIMIZATION = -Og
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endif
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ifeq ($(BR2_OPTIMIZE_S),y)
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TARGET_OPTIMIZATION = -Os
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endif
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ifeq ($(BR2_OPTIMIZE_FAST),y)
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TARGET_OPTIMIZATION = -Ofast
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endif
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ifeq ($(BR2_ENABLE_DEBUG),)
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TARGET_DEBUGGING = -g0
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endif
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ifeq ($(BR2_DEBUG_1),y)
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TARGET_DEBUGGING = -g1
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endif
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ifeq ($(BR2_DEBUG_2),y)
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TARGET_DEBUGGING = -g2
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endif
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ifeq ($(BR2_DEBUG_3),y)
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TARGET_DEBUGGING = -g3
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endif
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TARGET_LDFLAGS = $(call qstrip,$(BR2_TARGET_LDFLAGS))
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# musl's dynamic loader doesn't support DT_TEXTREL, which results in a runtime
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# crash if it gets used. The "-z text" linker option issues a build-time error
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# when DT_TEXREL is used, so we capture the problem earlier.
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#
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# See also: https://www.openwall.com/lists/musl/2020/09/25/4
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#
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# NOTE: We're using "-ztext" instead of "-Wl,-z,text" here, because some
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# packages pass TARGET_LDFLAGS directly to ld rather than gcc, and ld doesn't
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# support -Wl,[...]. -z is supported by both gcc and clang, so it probably
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# won't cause us problems.
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#
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# We're using "-ztext" instead of "-z text" here, because some buildsystems
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# (like scons, for gpsd) will reorder and/or drop LDFLAGS, causing a lone
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# "-z" to be passed and the "text" keyword to be dropped otherwise. Both
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# gcc and ld supports that, so it probably won't cause us problems.
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ifeq ($(BR2_TOOLCHAIN_USES_MUSL):$(BR2_STATIC_LIBS),y:)
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TARGET_LDFLAGS += -ztext
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endif
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# By design, _FORTIFY_SOURCE requires gcc optimization to be enabled.
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# Therefore, we need to pass _FORTIFY_SOURCE and the optimization level
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# through the same mechanism, i.e currently through CFLAGS. Passing
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# _FORTIFY_SOURCE through the wrapper and the optimization level
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# through CFLAGS would not work, because CFLAGS are sometimes
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# ignored/overridden by packages, but the flags passed by the wrapper
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# are enforced: this would cause _FORTIFY_SOURCE to be used without any
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# optimization level, leading to a build / configure failure. So we keep
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# passing _FORTIFY_SOURCE and the optimization level both through CFLAGS.
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ifeq ($(BR2_FORTIFY_SOURCE_1),y)
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TARGET_HARDENED += -D_FORTIFY_SOURCE=1
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else ifeq ($(BR2_FORTIFY_SOURCE_2),y)
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TARGET_HARDENED += -D_FORTIFY_SOURCE=2
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else ifeq ($(BR2_FORTIFY_SOURCE_3),y)
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TARGET_HARDENED += -D_FORTIFY_SOURCE=3
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endif
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TARGET_CPPFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
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ifeq ($(BR2_TIME_BITS_64),y)
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TARGET_CPPFLAGS += -D_TIME_BITS=64
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endif
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TARGET_CFLAGS = $(TARGET_CPPFLAGS) $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING) $(TARGET_HARDENED)
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TARGET_CXXFLAGS = $(TARGET_CFLAGS)
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TARGET_FCFLAGS = $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79509
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ifeq ($(BR2_m68k_cf),y)
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TARGET_CFLAGS += -fno-dwarf2-cfi-asm
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TARGET_CXXFLAGS += -fno-dwarf2-cfi-asm
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endif
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ifeq ($(BR2_BINFMT_FLAT),y)
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ifeq ($(BR2_riscv),y)
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TARGET_CFLAGS += -fPIC
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endif
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ELF2FLT_FLAGS = $(if $($(PKG)_FLAT_STACKSIZE),\
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-Wl$(comma)-elf2flt="-r -s$($(PKG)_FLAT_STACKSIZE)",\
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-Wl$(comma)-elf2flt=-r)
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TARGET_CFLAGS += $(ELF2FLT_FLAGS)
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TARGET_CXXFLAGS += $(ELF2FLT_FLAGS)
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TARGET_FCFLAGS += $(ELF2FLT_FLAGS)
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TARGET_LDFLAGS += $(ELF2FLT_FLAGS)
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endif
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
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TARGET_CROSS = $(HOST_DIR)/bin/$(GNU_TARGET_NAME)-
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else
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TARGET_CROSS = $(HOST_DIR)/bin/$(TOOLCHAIN_EXTERNAL_PREFIX)-
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endif
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# gcc-4.7 and later ships with wrappers that will automatically pass
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# arguments to the binutils tools. Those are paths to necessary linker
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# plugins.
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ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_4_7),y)
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TARGET_GCC_WRAPPERS_PREFIX = gcc-
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endif
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# Define TARGET_xx variables for all common binutils/gcc
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TARGET_AR = $(TARGET_CROSS)$(TARGET_GCC_WRAPPERS_PREFIX)ar
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TARGET_AS = $(TARGET_CROSS)as
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TARGET_CC = $(TARGET_CROSS)gcc
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TARGET_CPP = $(TARGET_CROSS)cpp
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TARGET_CXX = $(TARGET_CROSS)g++
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TARGET_FC = $(TARGET_CROSS)gfortran
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TARGET_LD = $(TARGET_CROSS)ld
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TARGET_NM = $(TARGET_CROSS)$(TARGET_GCC_WRAPPERS_PREFIX)nm
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TARGET_RANLIB = $(TARGET_CROSS)$(TARGET_GCC_WRAPPERS_PREFIX)ranlib
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TARGET_READELF = $(TARGET_CROSS)readelf
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TARGET_OBJCOPY = $(TARGET_CROSS)objcopy
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TARGET_OBJDUMP = $(TARGET_CROSS)objdump
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ifeq ($(BR2_STRIP_strip),y)
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STRIP_STRIP_DEBUG := --strip-debug
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TARGET_STRIP = $(TARGET_CROSS)strip
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STRIPCMD = $(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note
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else
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TARGET_STRIP = /bin/true
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STRIPCMD = $(TARGET_STRIP)
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endif
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INSTALL := $(shell which install || type -p install)
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UNZIP := $(shell which unzip || type -p unzip) -q
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APPLY_PATCHES = TAR="$(TAR)" PATH=$(HOST_DIR)/bin:$$PATH support/scripts/apply-patches.sh $(if $(QUIET),-s)
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HOST_CPPFLAGS = -I$(HOST_DIR)/include
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HOST_CFLAGS ?= -O2
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HOST_CFLAGS += $(HOST_CPPFLAGS)
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HOST_CXXFLAGS += $(HOST_CFLAGS)
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HOST_LDFLAGS += -L$(HOST_DIR)/lib -Wl,-rpath,$(HOST_DIR)/lib
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# host-intltool should be executed with the system perl, so we save
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# the path to the system perl, before a host-perl built by Buildroot
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# might get installed into $(HOST_DIR)/bin and therefore appears
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# in our PATH. This system perl will be used as INTLTOOL_PERL.
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export PERL=$(shell which perl)
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# host-intltool needs libxml-parser-perl, which Buildroot installs in
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# $(HOST_DIR)/lib/perl, so we must make sure that the system perl
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# finds this perl module by exporting the proper value for PERL5LIB.
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export PERL5LIB=$(HOST_DIR)/lib/perl
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TARGET_MAKE_ENV = \
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GIT_DIR=. \
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PATH=$(BR_PATH)
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TARGET_CONFIGURE_OPTS = \
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$(TARGET_MAKE_ENV) \
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AR="$(TARGET_AR)" \
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AS="$(TARGET_AS)" \
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LD="$(TARGET_LD)" \
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NM="$(TARGET_NM)" \
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CC="$(TARGET_CC)" \
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GCC="$(TARGET_CC)" \
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CPP="$(TARGET_CPP)" \
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CXX="$(TARGET_CXX)" \
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FC="$(TARGET_FC)" \
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F77="$(TARGET_FC)" \
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RANLIB="$(TARGET_RANLIB)" \
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READELF="$(TARGET_READELF)" \
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STRIP="$(TARGET_STRIP)" \
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OBJCOPY="$(TARGET_OBJCOPY)" \
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OBJDUMP="$(TARGET_OBJDUMP)" \
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AR_FOR_BUILD="$(HOSTAR)" \
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AS_FOR_BUILD="$(HOSTAS)" \
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CC_FOR_BUILD="$(HOSTCC)" \
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GCC_FOR_BUILD="$(HOSTCC)" \
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CXX_FOR_BUILD="$(HOSTCXX)" \
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LD_FOR_BUILD="$(HOSTLD)" \
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CPPFLAGS_FOR_BUILD="$(HOST_CPPFLAGS)" \
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CFLAGS_FOR_BUILD="$(HOST_CFLAGS)" \
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CXXFLAGS_FOR_BUILD="$(HOST_CXXFLAGS)" \
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LDFLAGS_FOR_BUILD="$(HOST_LDFLAGS)" \
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FCFLAGS_FOR_BUILD="$(HOST_FCFLAGS)" \
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DEFAULT_ASSEMBLER="$(TARGET_AS)" \
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DEFAULT_LINKER="$(TARGET_LD)" \
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CPPFLAGS="$(TARGET_CPPFLAGS)" \
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CFLAGS="$(TARGET_CFLAGS)" \
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CXXFLAGS="$(TARGET_CXXFLAGS)" \
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LDFLAGS="$(TARGET_LDFLAGS)" \
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FCFLAGS="$(TARGET_FCFLAGS)" \
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FFLAGS="$(TARGET_FCFLAGS)" \
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PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
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STAGING_DIR="$(STAGING_DIR)" \
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INTLTOOL_PERL=$(PERL)
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HOST_MAKE_ENV = \
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GIT_DIR=. \
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PATH=$(BR_PATH) \
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PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
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PKG_CONFIG_SYSROOT_DIR="/" \
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PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \
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PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \
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PKG_CONFIG_LIBDIR="$(HOST_DIR)/lib/pkgconfig:$(HOST_DIR)/share/pkgconfig"
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HOST_CONFIGURE_OPTS = \
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$(HOST_MAKE_ENV) \
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AR="$(HOSTAR)" \
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AS="$(HOSTAS)" \
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LD="$(HOSTLD)" \
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NM="$(HOSTNM)" \
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CC="$(HOSTCC)" \
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GCC="$(HOSTCC)" \
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CXX="$(HOSTCXX)" \
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CPP="$(HOSTCPP)" \
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OBJCOPY="$(HOSTOBJCOPY)" \
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RANLIB="$(HOSTRANLIB)" \
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CPPFLAGS="$(HOST_CPPFLAGS)" \
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CFLAGS="$(HOST_CFLAGS)" \
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CXXFLAGS="$(HOST_CXXFLAGS)" \
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LDFLAGS="$(HOST_LDFLAGS)" \
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INTLTOOL_PERL=$(PERL)
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# This is extra environment we can not export ourselves (eg. because some
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# packages use that variable internally, eg. uboot), so we have to
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# explicitly pass it to user-supplied external hooks (eg. post-build,
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# post-images)
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EXTRA_ENV = \
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PATH=$(BR_PATH) \
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BR2_DL_DIR=$(BR2_DL_DIR) \
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BUILD_DIR=$(BUILD_DIR) \
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CONFIG_DIR=$(CONFIG_DIR) \
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O=$(CANONICAL_O) \
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PARALLEL_JOBS=$(PARALLEL_JOBS)
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################################################################################
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# settings we need to pass to configure
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# does unaligned access trap?
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BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=yes
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ifeq ($(BR2_i386),y)
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BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_x86_64),y)
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BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_m68k),y)
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BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_powerpc)$(BR2_powerpc64)$(BR2_powerpc64le),y)
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BR2_AC_CV_TRAP_CHECK = ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_ENDIAN),"BIG")
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BR2_AC_CV_C_BIGENDIAN = ac_cv_c_bigendian=yes
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else
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BR2_AC_CV_C_BIGENDIAN = ac_cv_c_bigendian=no
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endif
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# AM_GNU_GETTEXT misdetects musl gettext support.
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# musl currently implements api level 1 and 2 (basic + ngettext)
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# http://www.openwall.com/lists/musl/2015/04/16/3
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#
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# These autoconf variables should only be pre-seeded when the minimal
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# gettext implementation of musl is used. When the full blown
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# implementation provided by gettext libintl is used, auto-detection
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# works fine, and pre-seeding those values is actually wrong.
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ifeq ($(BR2_TOOLCHAIN_USES_MUSL):$(BR2_PACKAGE_GETTEXT_PROVIDES_LIBINTL),y:)
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BR2_GT_CV_FUNC_GNUGETTEXT_LIBC = \
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gt_cv_func_gnugettext1_libc=yes \
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gt_cv_func_gnugettext2_libc=yes
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endif
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TARGET_CONFIGURE_ARGS = \
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$(BR2_AC_CV_TRAP_CHECK) \
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ac_cv_func_mmap_fixed_mapped=yes \
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ac_cv_func_memcmp_working=yes \
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ac_cv_have_decl_malloc=yes \
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gl_cv_func_malloc_0_nonnull=yes \
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ac_cv_func_malloc_0_nonnull=yes \
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ac_cv_func_calloc_0_nonnull=yes \
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ac_cv_func_realloc_0_nonnull=yes \
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lt_cv_sys_lib_search_path_spec="" \
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$(BR2_AC_CV_C_BIGENDIAN) \
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$(BR2_GT_CV_FUNC_GNUGETTEXT_LIBC)
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################################################################################
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ifeq ($(BR2_SYSTEM_ENABLE_NLS),y)
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NLS_OPTS = --enable-nls
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TARGET_NLS_DEPENDENCIES = host-gettext
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ifeq ($(BR2_PACKAGE_GETTEXT_PROVIDES_LIBINTL),y)
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TARGET_NLS_DEPENDENCIES += gettext
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TARGET_NLS_LIBS += -lintl
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endif
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else
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NLS_OPTS = --disable-nls
|
|
endif
|
|
|
|
# We need anything that is invalid. Traditionally, we'd have used 'false' (and
|
|
# we did so in the past). However, that breaks libtool for packages that have
|
|
# optional C++ support (e.g. gnutls), because libtool will *require* a *valid*
|
|
# C++ preprocessor as long as CXX is not 'no'.
|
|
# Now, whether we use 'no' or 'false' for CXX as the same side effect: it is an
|
|
# invalid C++ compiler, and thus will cause detection of C++ to fail (which is
|
|
# expected and what we want), while at the same time taming libtool into
|
|
# silence.
|
|
ifneq ($(BR2_INSTALL_LIBSTDCPP),y)
|
|
TARGET_CONFIGURE_OPTS += CXX=no
|
|
endif
|
|
|
|
ifeq ($(BR2_STATIC_LIBS),y)
|
|
SHARED_STATIC_LIBS_OPTS = --enable-static --disable-shared
|
|
TARGET_CFLAGS += -static
|
|
TARGET_CXXFLAGS += -static
|
|
TARGET_FCFLAGS += -static
|
|
TARGET_LDFLAGS += -static
|
|
else ifeq ($(BR2_SHARED_LIBS),y)
|
|
SHARED_STATIC_LIBS_OPTS = --disable-static --enable-shared
|
|
else ifeq ($(BR2_SHARED_STATIC_LIBS),y)
|
|
SHARED_STATIC_LIBS_OPTS = --enable-static --enable-shared
|
|
endif
|
|
|
|
# Used by our binutils patches.
|
|
export BR_COMPILER_PARANOID_UNSAFE_PATH=enabled
|
|
|
|
include package/pkg-download.mk
|
|
include package/pkg-autotools.mk
|
|
include package/pkg-cmake.mk
|
|
include package/pkg-luarocks.mk
|
|
include package/pkg-perl.mk
|
|
include package/pkg-python.mk
|
|
include package/pkg-virtual.mk
|
|
include package/pkg-generic.mk
|
|
include package/pkg-kconfig.mk
|
|
include package/pkg-rebar.mk
|
|
include package/pkg-kernel-module.mk
|
|
include package/pkg-waf.mk
|
|
include package/pkg-golang.mk
|
|
include package/pkg-meson.mk
|
|
include package/pkg-qmake.mk
|
|
include package/pkg-cargo.mk
|