Support building using an external toolchain. Questions to the mailing list and all other comments to <biteme@devnull.com>.
This commit is contained in:
"Steven J. Hill"
parent
4cdc420621
commit
02f71aab47
4
Makefile
4
Makefile
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@ -44,7 +44,11 @@ ifeq ($(strip $(BR2_HAVE_DOT_CONFIG)),y)
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# along with the packages to build for the target.
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#
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##############################################################
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
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TARGETS:=uclibc-configured binutils gcc uclibc-target-utils
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else
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TARGETS:=uclibc
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endif
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include toolchain/Makefile.in
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include package/Makefile.in
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@ -19,7 +19,12 @@ TAR_OPTIONS=$(subst ",, $(BR2_TAR_OPTIONS)) -xf
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#")
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
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TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
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else
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TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING) -I$(STAGING_DIR)/include -I$(TOOLCHAIN_EXTERNAL_PATH)/$(TOOLCHAIN_EXTERNAL_PREFIX)/include
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TARGET_LDFLAGS=-L$(STAGING_DIR)/lib -L$(STAGING_DIR)/usr/lib
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endif
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HOSTCC:=gcc
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HOSTCXX:=g++
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@ -44,13 +49,14 @@ endif
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#PATCH_DIR=$(BASE_DIR)/sources/patches
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BUILD_DIR:=$(BASE_DIR)/$(TOPDIR_PREFIX)build_$(ARCH)$(ARCH_FPU_SUFFIX)$(TOPDIR_SUFFIX)
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TARGET_DIR:=$(BUILD_DIR)/root
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TOOL_BUILD_DIR=$(BASE_DIR)/$(TOPDIR_PREFIX)toolchain_build_$(ARCH)$(ARCH_FPU_SUFFIX)$(TOPDIR_SUFFIX)
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GNU_TARGET_SUFFIX:=-$(strip $(subst ",, $(BR2_GNU_TARGET_SUFFIX)))
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#"))
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STAGING_DIR:=$(strip $(subst ",, $(BR2_STAGING_DIR)))
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#"))
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
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TOOL_BUILD_DIR=$(BASE_DIR)/$(TOPDIR_PREFIX)toolchain_build_$(ARCH)$(ARCH_FPU_SUFFIX)$(TOPDIR_SUFFIX)
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# Quotes are needed for spaces et al in path components.
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TARGET_PATH="$(STAGING_DIR)/bin:$(TOOL_BUILD_DIR)/bin:$(PATH)"
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@ -59,6 +65,19 @@ REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)$(GNU_TARGET_SUFFIX)
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GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-linux
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KERNEL_CROSS=$(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)$(GNU_TARGET_SUFFIX)-
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TARGET_CROSS=$(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)$(GNU_TARGET_SUFFIX)-
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else
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TOOLCHAIN_EXTERNAL_PREFIX:=$(strip $(subst ",, $(BR2_TOOLCHAIN_EXTERNAL_PREFIX)))
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#"))
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TOOLCHAIN_EXTERNAL_PATH:=$(strip $(subst ",, $(BR2_TOOLCHAIN_EXTERNAL_PATH)))
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#"))
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TOOL_BUILD_DIR=$(BASE_DIR)/$(TOPDIR_PREFIX)toolchain_build_$(TOOLCHAIN_EXTERNAL_PREFIX)
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TARGET_PATH="$(STAGING_DIR)/bin:$(TOOL_BUILD_DIR)/bin:$(TOOLCHAIN_EXTERNAL_PATH)/bin:$(PATH)"
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IMAGE:=$(BASE_DIR)/rootfs.$(TOOLCHAIN_EXTERNAL_PREFIX)
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REAL_GNU_TARGET_NAME=$(TOOLCHAIN_EXTERNAL_PREFIX)
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GNU_TARGET_NAME=$(TOOLCHAIN_EXTERNAL_PREFIX)
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KERNEL_CROSS=$(TOOLCHAIN_EXTERNAL_PATH)/bin/$(TOOLCHAIN_EXTERNAL_PREFIX)-
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TARGET_CROSS=$(TOOLCHAIN_EXTERNAL_PATH)/bin/$(TOOLCHAIN_EXTERNAL_PREFIX)-
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endif
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TARGET_CC=$(TARGET_CROSS)gcc
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TARGET_CXX=$(TARGET_CROSS)g++
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TARGET_RANLIB=$(TARGET_CROSS)ranlib
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@ -7,4 +7,7 @@ include target/powerpc/Makefile.in
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# and finally build the filesystems/tarballs
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include target/*/*.mk
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# kernel rules
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ifeq ($(BR2_PACKAGE_LINUX),y)
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TARGETS+=linux26
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endif
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include target/linux*.mk
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@ -1,6 +1,3 @@
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TARGET_DEVICE_DEPMOD:=target/device/x86/depmod.pl
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-include target/device/*/Makefile.in
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ifeq ($(BR2_PACKAGE_LINUX),y)
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TARGETS+=linux26
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endif
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@ -1,67 +1,20 @@
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#
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menu "Toolchain Options"
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source "toolchain/kernel-headers/Config.in"
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source "toolchain/uClibc/Config.in"
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source "toolchain/binutils/Config.in"
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source "toolchain/gcc/Config.in"
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source "toolchain/ccache/Config.in"
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source "toolchain/gdb/Config.in"
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source "toolchain/elf2flt/Config.in"
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source "toolchain/mklibs/Config.in"
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comment "Common Toolchain Options"
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source "toolchain/sstrip/Config.in"
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config BR2_ENABLE_MULTILIB
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bool "Enable multilib support?"
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default n
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choice
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prompt "Toolchain type"
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default BR2_TOOLCHAIN_BUILDROOT
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help
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If you want multilib enabled, enable this...
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Select whether to use the toolchain built by the buildroot
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system or an external pre-built toolchain.
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config BR2_LARGEFILE
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bool "Enable large file (files > 2 GB) support?"
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depends on !BR2_cris
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default y
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help
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Enable large file (files > 2 GB) support
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config BR2_TOOLCHAIN_BUILDROOT
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bool
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prompt "Buildroot toolchain"
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config BR2_SOFT_FLOAT
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bool "Use software floating point by default"
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default n
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depends on BR2_arm || BR2_armeb || BR2_mips || BR2_mipsel || BR2_powerpc
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help
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If your target CPU does not have a Floating Point Unit (FPU) or a
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kernel FPU emulator, but you still wish to support floating point
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functions, then everything will need to be compiled with soft
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floating point support (-msoft-float).
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Most people will answer N.
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#config BR2_SOFT_FLOAT_FP
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# bool "Use softfp"
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# default n
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config BR2_TARGET_OPTIMIZATION
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string "Target Optimizations"
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default "-Os -pipe"
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help
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Optimizations to use when building for the target host.
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config BR2_CROSS_TOOLCHAIN_TARGET_UTILS
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bool "Include target utils in cross toolchain"
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default y
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help
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When using buildroot to build a deployable cross toolchain,
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it is handy to include certain target apps with that toolchain
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as a convenience.
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Examples include ldd, gdbserver, and strace.
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Answer Y if you want these apps (if built) copied into the
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cross toolchain dir under <arch>-linux-uclibc/target_utils/.
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endmenu
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config BR2_TOOLCHAIN_EXTERNAL
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bool
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prompt " External toolchain"
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endchoice
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source "toolchain/Config.in.2"
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source "toolchain/external-toolchain/Config.in"
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66
toolchain/Config.in.2
Normal file
66
toolchain/Config.in.2
Normal file
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@ -0,0 +1,66 @@
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#
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menu "Toolchain Options"
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depends on BR2_TOOLCHAIN_BUILDROOT
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source "toolchain/kernel-headers/Config.in"
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source "toolchain/uClibc/Config.in"
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source "toolchain/binutils/Config.in"
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source "toolchain/gcc/Config.in"
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source "toolchain/ccache/Config.in"
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source "toolchain/gdb/Config.in"
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source "toolchain/elf2flt/Config.in"
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source "toolchain/mklibs/Config.in"
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comment "Common Toolchain Options"
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source "toolchain/sstrip/Config.in"
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config BR2_ENABLE_MULTILIB
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bool "Enable multilib support?"
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default n
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help
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If you want multilib enabled, enable this...
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config BR2_LARGEFILE
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bool "Enable large file (files > 2 GB) support?"
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depends on !BR2_cris
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default y
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help
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Enable large file (files > 2 GB) support
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config BR2_SOFT_FLOAT
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bool "Use software floating point by default"
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default n
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depends on BR2_arm || BR2_armeb || BR2_mips || BR2_mipsel || BR2_powerpc
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help
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If your target CPU does not have a Floating Point Unit (FPU) or a
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kernel FPU emulator, but you still wish to support floating point
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functions, then everything will need to be compiled with soft
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floating point support (-msoft-float).
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Most people will answer N.
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#config BR2_SOFT_FLOAT_FP
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# bool "Use softfp"
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# default n
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config BR2_TARGET_OPTIMIZATION
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string "Target Optimizations"
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default "-Os -pipe"
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help
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Optimizations to use when building for the target host.
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config BR2_CROSS_TOOLCHAIN_TARGET_UTILS
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bool "Include target utils in cross toolchain"
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default y
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help
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When using buildroot to build a deployable cross toolchain,
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it is handy to include certain target apps with that toolchain
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as a convenience.
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Examples include ldd, gdbserver, and strace.
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Answer Y if you want these apps (if built) copied into the
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cross toolchain dir under <arch>-linux-uclibc/target_utils/.
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endmenu
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72
toolchain/external-toolchain/Config.in
Normal file
72
toolchain/external-toolchain/Config.in
Normal file
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@ -0,0 +1,72 @@
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#
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menu "Toolchain Options"
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depends on BR2_TOOLCHAIN_EXTERNAL
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config BR2_TOOLCHAIN_EXTERNAL_LIB_C
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string "The core C library from the external toolchain"
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default "libc.so.6"
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help
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Specify the core C shared library found in the external
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toolchain. This is required in addition to any other
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libraries to be copied.
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config BR2_TOOLCHAIN_EXTERNAL_LIBS
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string "Libraries to copy from the external toolchain"
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default ""
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help
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A space separated list of the shared libraries to be copied
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from the external toolchain into the root filesystem. Only
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the top-level name is needed, i.e. libc.so, libpthread.so as
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the actual shared library symlinked to will be copied also.
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config BR2_TOOLCHAIN_EXTERNAL_STRIP
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bool
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default y
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prompt "Strip shared libraries"
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help
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Strip shared libraries copied from the external toolchain.
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source "toolchain/gdb/Config.in.2"
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comment "Common Toolchain Options"
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config BR2_TOOLCHAIN_EXTERNAL_PATH
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string "External toolchain path"
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default ""
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help
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Path to where the external toolchain is installed.
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config BR2_TOOLCHAIN_EXTERNAL_PREFIX
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string "External toolchain prefix"
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default ""
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help
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This the the external toolchain prefix. For example:
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armeb-unknown-linux-gnu, mipsel-unknown-linux-gnu, etc.
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config BR2_LARGEFILE
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bool "Enable large file (files > 2 GB) support?"
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depends on !BR2_cris
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default y
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help
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Enable large file (files > 2 GB) support
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config BR2_SOFT_FLOAT
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bool "Use software floating point by default"
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default n
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depends on BR2_arm || BR2_armeb || BR2_mips || BR2_mipsel || BR2_powerpc
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help
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If your target CPU does not have a Floating Point Unit (FPU) or a
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kernel FPU emulator, but you still wish to support floating point
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functions, then everything will need to be compiled with soft
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floating point support (-msoft-float).
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Most people will answer N.
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config BR2_TARGET_OPTIMIZATION
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string "Target Optimizations"
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default "-Os -pipe"
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help
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Optimizations to use when building for the target host.
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endmenu
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56
toolchain/external-toolchain/ext-tool.mk
Normal file
56
toolchain/external-toolchain/ext-tool.mk
Normal file
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@ -0,0 +1,56 @@
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#
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# copy_toolchain_lib_root
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#
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# $1: source
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# $2: destination
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# $2: strip (y|n) default is to strip
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#
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copy_toolchain_lib_root = \
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LIB="$(strip $1)"; \
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DST="$(strip $2)"; \
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STRIP="$(strip $3)"; \
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\
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LIB_DIR=`$(TARGET_CC) -print-file-name=$${LIB} | sed -e "s,/$${LIB}\$$,,"`; \
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\
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if test -z "$${LIB_DIR}"; then \
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echo "copy_toolchain_lib_root: lib=$${LIB} not found"; \
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exit -1; \
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fi; \
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\
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LIB="$(strip $1)"; \
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for FILE in `find $${LIB_DIR} -type l -name "$${LIB}*" -maxdepth 1`; do \
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LIB=`basename $${FILE}`; \
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while test \! -z "$${LIB}"; do \
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echo "copy_toolchain_lib_root lib=$${LIB} dst=$${DST}"; \
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rm -fr $(TARGET_DIR)$${DST}/$${LIB}; \
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mkdir -p $(TARGET_DIR)$${DST}; \
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if test -h $${LIB_DIR}/$${LIB}; then \
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cp -d $${LIB_DIR}/$${LIB} $(TARGET_DIR)$${DST}/; \
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elif test -f $${LIB_DIR}/$${LIB}; then \
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cp $${LIB_DIR}/$${LIB} $(TARGET_DIR)$${DST}/$${LIB}; \
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case "$${STRIP}" in \
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(0 | n | no) \
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;; \
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(*) \
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$(TARGET_CROSS)strip "$(TARGET_DIR)$${DST}/$${LIB}"; \
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;; \
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esac; \
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else \
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exit -1; \
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fi; \
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LIB="`readlink $${LIB_DIR}/$${LIB}`"; \
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done; \
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done; \
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\
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echo -n
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uclibc: dependencies $(TARGET_DIR)/lib/$(strip $(subst ",, $(BR2_TOOLCHAIN_EXTERNAL_LIB_C)))
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$(TARGET_DIR)/lib/$(strip $(subst ",, $(BR2_TOOLCHAIN_EXTERNAL_LIB_C))):
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#"))
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mkdir -p $(TARGET_DIR)/lib
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@$(call copy_toolchain_lib_root, $(strip $(subst ",, $(BR2_TOOLCHAIN_EXTERNAL_LIB_C))), /lib, $(BR2_TOOLCHAIN_EXTERNAL_STRIP))
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#")))
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for libs in $(strip $(subst ",, $(BR2_TOOLCHAIN_EXTERNAL_LIBS))) ; do \
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$(call copy_toolchain_lib_root, $$libs, /lib, $(BR2_TOOLCHAIN_EXTERNAL_STRIP)) ; \
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done
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55
toolchain/gdb/Config.in.2
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55
toolchain/gdb/Config.in.2
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@ -0,0 +1,55 @@
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# Keep this in sync with Config.in
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comment "Gdb Options"
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config BR2_PACKAGE_GDB
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bool "Build gdb debugger for the Target"
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default n
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select BR2_PACKAGE_NCURSES
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help
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Build the full gdb debugger to run on the target.
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config BR2_PACKAGE_GDB_SERVER
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bool "Build gdb server for the Target"
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default n
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help
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Build the gdbserver stub to run on the target.
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A full gdb is needed to debug the progam.
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config BR2_PACKAGE_GDB_HOST
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bool "Build gdb for the Host"
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default n
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help
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Build gdb to run on the host to debug programs run on the target.
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choice
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prompt "GDB debugger Version"
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default BR2_GDB_VERSION_6_3
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depends on BR2_PACKAGE_GDB || BR2_PACKAGE_GDB_SERVER || BR2_PACKAGE_GDB_HOST
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help
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Select the version of gdb you wish to use.
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config BR2_EXT_GDB_VERSION_6_2_1
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bool "gdb 6.2.1"
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config BR2_EXT_GDB_VERSION_6_3
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bool "gdb 6.3"
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config BR2_EXT_GDB_VERSION_6_4
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bool "gdb 6.4"
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config BR2_EXT_GDB_VERSION_6_5
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bool "gdb 6.5"
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config BR2_EXT_GDB_VERSION_SNAPSHOT
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bool "gdb snapshot"
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endchoice
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config BR2_EXT_GDB_VERSION
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string
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default "6.2.1" if BR2_EXT_GDB_VERSION_6_2_1
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default "6.3" if BR2_EXT_GDB_VERSION_6_3
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default "6.4" if BR2_EXT_GDB_VERSION_6_4
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default "6.5" if BR2_EXT_GDB_VERSION_6_5
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default "snapshot" if BR2_EXT_GDB_VERSION_SNAPSHOT
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@ -4,6 +4,7 @@
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#
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#############################################################
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
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ifeq ($(BR2_UCLIBC_VERSION_SNAPSHOT),y)
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# Be aware that this changes daily....
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@ -339,3 +340,4 @@ uclibc_target-clean:
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uclibc_target-dirclean:
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rm -rf $(TARGET_DIR)/usr/include
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endif
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Reference in New Issue
Block a user