diff options
Diffstat (limited to 'toolchain')
| -rw-r--r-- | toolchain/Config.in | 16 | ||||
| -rw-r--r-- | toolchain/helpers.mk (renamed from toolchain/external-toolchain/ext-tool.mk) | 118 | ||||
| -rw-r--r-- | toolchain/toolchain-buildroot.mk | 12 | ||||
| -rw-r--r-- | toolchain/toolchain-buildroot/Config.in (renamed from toolchain/Config.in.1) | 2 | ||||
| -rw-r--r-- | toolchain/toolchain-buildroot/Config.in.2 | 37 | ||||
| -rw-r--r-- | toolchain/toolchain-common.in (renamed from toolchain/Config.in.2) | 46 | ||||
| -rw-r--r-- | toolchain/toolchain-external.mk | 14 | ||||
| -rw-r--r-- | toolchain/toolchain-external/Config.in (renamed from toolchain/external-toolchain/Config.in) | 0 | ||||
| -rw-r--r-- | toolchain/toolchain-external/Config.in.2 (renamed from toolchain/external-toolchain/Config.in.2) | 0 | ||||
| -rw-r--r-- | toolchain/toolchain-external/ext-tool.mk | 115 |
10 files changed, 196 insertions, 164 deletions
diff --git a/toolchain/Config.in b/toolchain/Config.in index ee94143a2..fc9a0487a 100644 --- a/toolchain/Config.in +++ b/toolchain/Config.in @@ -16,16 +16,10 @@ config BR2_TOOLCHAIN_EXTERNAL endchoice -source "toolchain/Config.in.1" -source "toolchain/external-toolchain/Config.in" - -# we want gdb config in the middle of both source and external -# toolchains, but mconf won't let us source the same file twice, -# so put it here instead -source "toolchain/gdb/Config.in" -comment "Common Toolchain Options" - -source "toolchain/Config.in.2" -source "toolchain/external-toolchain/Config.in.2" +source "toolchain/toolchain-buildroot/Config.in" +source "toolchain/toolchain-external/Config.in" +source "toolchain/toolchain-common.in" +source "toolchain/toolchain-buildroot/Config.in.2" +source "toolchain/toolchain-external/Config.in.2" endmenu diff --git a/toolchain/external-toolchain/ext-tool.mk b/toolchain/helpers.mk index 8be86f53a..5c87d2bfa 100644 --- a/toolchain/external-toolchain/ext-tool.mk +++ b/toolchain/helpers.mk @@ -1,41 +1,6 @@ - -# -# This file implements the support for external toolchains, i.e -# toolchains that have not been produced by Buildroot itself and that -# are already available on the system on which Buildroot runs. So far, -# we have tested this with: -# -# * Toolchains generated by Crosstool-NG -# * Toolchains generated by Buildroot -# * ARM, MIPS and PowerPC toolchains made available by -# Codesourcery. For the MIPS toolchain, the -muclibc variant isn't -# supported yet, only the default glibc-based variant is. -# -# The basic principle is the following -# -# 1. Perform some checks on the conformity between the toolchain -# configuration described in the Buildroot menuconfig system, and the -# real configuration of the external toolchain. This is for example -# important to make sure that the Buildroot configuration system -# knows whether the toolchain supports RPC, IPv6, locales, large -# files, etc. Unfortunately, these things cannot be detected -# automatically, since the value of these options (such as -# BR2_INET_RPC) are needed at configuration time because these -# options are used as dependencies for other options. And at -# configuration time, we are not able to retrieve the external -# toolchain configuration. -# -# 2. Copy the libraries needed at runtime to the target directory, -# $(TARGET_DIR). Obviously, things such as the C library, the dynamic -# loader and a few other utility libraries are needed if dynamic -# applications are to be executed on the target system. -# -# 3. Copy the libraries and headers to the staging directory. This -# will allow all further calls to gcc to be made using --sysroot -# $(STAGING_DIR), which greatly simplifies the compilation of the -# packages when using external toolchains. So in the end, only the -# cross-compiler binaries remains external, all libraries and headers -# are imported into the Buildroot tree. +# This Makefile fragment declares helper functions, usefull to handle +# non- buildroot-built toolchains, eg. purely external toolchains or +# toolchains (internally) built using crosstool-NG. # # Copy a toolchain library and its symbolic links from the sysroot @@ -277,80 +242,3 @@ check_cross_compiler_exists = \ echo "Cannot execute cross-compiler '$(TARGET_CC)'" ; \ exit 1 ; \ fi ; \ - -uclibc: dependencies $(STAMP_DIR)/ext-toolchain-installed - -LIB_EXTERNAL_LIBS=ld*.so libc.so libcrypt.so libdl.so libgcc_s.so libm.so libnsl.so libresolv.so librt.so libutil.so -ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC),y) -LIB_EXTERNAL_LIBS+=libnss_files.so libnss_dns.so -endif - -ifeq ($(BR2_INSTALL_LIBSTDCPP),y) -USR_LIB_EXTERNAL_LIBS+=libstdc++.so -endif - -ifneq ($(BR2_PTHREADS_NONE),y) -LIB_EXTERNAL_LIBS+=libpthread.so -ifeq ($(BR2_PACKAGE_GDB_SERVER),y) -LIB_EXTERNAL_LIBS+=libthread_db.so -endif # gdbserver -endif # ! no threads - -# SYSROOT_DIR selection. We first try the -print-sysroot option, -# available in gcc 4.4.x and in some Codesourcery toolchains. If this -# option is not available, we fallback to the value of --with-sysroot -# as visible in CROSS-gcc -v. We don't pass any option to gcc that -# could select a multilib variant as we want the "main" sysroot, which -# contains all variants of the C library in the case of multilib -# toolchains. -TARGET_CC_NO_SYSROOT=$(filter-out --sysroot=%,$(TARGET_CC)) -SYSROOT_DIR=$(shell $(TARGET_CC_NO_SYSROOT) -print-sysroot 2>/dev/null) -ifeq ($(SYSROOT_DIR),) -SYSROOT_DIR=$(shell readlink -f $$(LANG=C $(TARGET_CC_NO_SYSROOT) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;') -endif - -# Now, find if the toolchain specifies a sub-directory for the -# specific architecture variant we're interested in. This is the case -# with multilib toolchain, when the selected architecture variant is -# not the default one. To do so, we ask the compiler by passing all -# flags, except the --sysroot flag since we want to the compiler to -# tell us where its original sysroot is. ARCH_SUBDIR will contain the -# subdirectory, in the main SYSROOT_DIR, that corresponds to the -# selected architecture variant. ARCH_SYSROOT_DIR will contain the -# full path to this location. -ARCH_SUBDIR=$(shell $(TARGET_CC_NO_SYSROOT) $(TARGET_CFLAGS) -print-multi-directory) -ARCH_SYSROOT_DIR=$(SYSROOT_DIR)/$(ARCH_SUBDIR) - -$(STAMP_DIR)/ext-toolchain-installed: - @echo "Checking external toolchain settings" - $(Q)$(call check_cross_compiler_exists) -ifeq ($(strip $(SYSROOT_DIR)),) - @echo "External toolchain doesn't support --sysroot. Cannot use." - exit 1 -endif -ifeq ($(BR2_arm),y) - $(Q)$(call check_arm_abi) -endif -ifeq ($(BR2_INSTALL_LIBSTDCPP),y) - $(Q)$(call check_cplusplus) -endif -ifeq ($(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y) - $(Q)$(call check_uclibc,$(SYSROOT_DIR)) -else - $(Q)$(call check_glibc,$(SYSROOT_DIR)) -endif - mkdir -p $(TARGET_DIR)/lib - @echo "Copy external toolchain libraries to target..." - $(Q)for libs in $(LIB_EXTERNAL_LIBS); do \ - $(call copy_toolchain_lib_root,$(ARCH_SYSROOT_DIR),$$libs,/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ - done - $(Q)for libs in $(USR_LIB_EXTERNAL_LIBS); do \ - $(call copy_toolchain_lib_root,$(ARCH_SYSROOT_DIR),$$libs,/usr/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ - done - @echo "Copy external toolchain sysroot to staging..." - $(Q)$(call copy_toolchain_sysroot,$(SYSROOT_DIR),$(ARCH_SYSROOT_DIR),$(ARCH_SUBDIR)) - # Create lib64 symbolic links if needed - $(Q)if [ -L $(ARCH_SYSROOT_DIR)/lib64 ] ; then \ - $(call create_lib64_symlinks) ; \ - fi - @touch $@ diff --git a/toolchain/toolchain-buildroot.mk b/toolchain/toolchain-buildroot.mk new file mode 100644 index 000000000..d879697e9 --- /dev/null +++ b/toolchain/toolchain-buildroot.mk @@ -0,0 +1,12 @@ +# Include files required for the internal toolchain backend + +include toolchain/dependencies/dependencies.mk +include toolchain/binutils/binutils.mk +include toolchain/ccache/ccache.mk +include toolchain/elf2flt/elf2flt.mk +include toolchain/gcc/gcc-uclibc-4.x.mk +include toolchain/gdb/gdb.mk +include toolchain/kernel-headers/kernel-headers.mk +include toolchain/mklibs/mklibs.mk +include toolchain/sstrip/sstrip.mk +include toolchain/uClibc/uclibc.mk diff --git a/toolchain/Config.in.1 b/toolchain/toolchain-buildroot/Config.in index 5c26858d0..a9dd19240 100644 --- a/toolchain/Config.in.1 +++ b/toolchain/toolchain-buildroot/Config.in @@ -1,4 +1,4 @@ -# +# Config entries for internal toolchain backend if BR2_TOOLCHAIN_BUILDROOT source "toolchain/kernel-headers/Config.in" diff --git a/toolchain/toolchain-buildroot/Config.in.2 b/toolchain/toolchain-buildroot/Config.in.2 new file mode 100644 index 000000000..512a60844 --- /dev/null +++ b/toolchain/toolchain-buildroot/Config.in.2 @@ -0,0 +1,37 @@ +# Buildroot backend specific options + +if BR2_TOOLCHAIN_BUILDROOT +source "toolchain/elf2flt/Config.in" +source "toolchain/mklibs/Config.in" +source "toolchain/sstrip/Config.in" + +config BR2_ENABLE_MULTILIB + bool "Enable multilib support?" + help + Build libraries to support different ABIs. + +config BR2_VFP_FLOAT + bool "Use ARM Vector Floating Point unit" + depends on !BR2_SOFT_FLOAT + depends on BR2_arm || BR2_armeb + help + Setting this option will enable the "-mfpu=vfp" option. + If your ARM CPU has a Vector Floating Point Unit (VFP) + and the toolchain supports the option, then the + code can be optimized. + + Most people will answer N. + +config BR2_CROSS_TOOLCHAIN_TARGET_UTILS + bool "Include target utils in cross toolchain" + default y + help + When using buildroot to build a deployable cross toolchain, + it is handy to include certain target apps with that toolchain + as a convenience. + Examples include ldd, gdbserver, and strace. + + Answer Y if you want these apps (if built) copied into the + cross toolchain dir under <arch>-linux-uclibc/target_utils/. + +endif diff --git a/toolchain/Config.in.2 b/toolchain/toolchain-common.in index 35263ce81..bea0c7c43 100644 --- a/toolchain/Config.in.2 +++ b/toolchain/toolchain-common.in @@ -1,4 +1,12 @@ -# +# Generic toolchain options + +# we want gdb config in the middle of both source and external +# toolchains, but mconf won't let us source the same file twice, +# so put it here instead +source "toolchain/gdb/Config.in" + +comment "Common Toolchain Options" + config BR2_LARGEFILE bool "Enable large file (files > 2 GB) support?" depends on !BR2_cris @@ -162,39 +170,3 @@ config BR2_TARGET_OPTIMIZATION help Optimizations to use when building for the target host. NOTE: gcc optimization level is defined in build options. - -if BR2_TOOLCHAIN_BUILDROOT -source "toolchain/elf2flt/Config.in" -source "toolchain/mklibs/Config.in" -source "toolchain/sstrip/Config.in" - -config BR2_ENABLE_MULTILIB - bool "Enable multilib support?" - help - Build libraries to support different ABIs. - -config BR2_VFP_FLOAT - bool "Use ARM Vector Floating Point unit" - depends on !BR2_SOFT_FLOAT - depends on BR2_arm || BR2_armeb - help - Setting this option will enable the "-mfpu=vfp" option. - If your ARM CPU has a Vector Floating Point Unit (VFP) - and the toolchain supports the option, then the - code can be optimized. - - Most people will answer N. - -config BR2_CROSS_TOOLCHAIN_TARGET_UTILS - bool "Include target utils in cross toolchain" - default y - help - When using buildroot to build a deployable cross toolchain, - it is handy to include certain target apps with that toolchain - as a convenience. - Examples include ldd, gdbserver, and strace. - - Answer Y if you want these apps (if built) copied into the - cross toolchain dir under <arch>-linux-uclibc/target_utils/. - -endif diff --git a/toolchain/toolchain-external.mk b/toolchain/toolchain-external.mk new file mode 100644 index 000000000..6f1f641ac --- /dev/null +++ b/toolchain/toolchain-external.mk @@ -0,0 +1,14 @@ +# Required includes for the external toolchain backend + +include toolchain/helpers.mk +include toolchain/binutils/binutils.mk +include toolchain/ccache/ccache.mk +include toolchain/dependencies/dependencies.mk +include toolchain/elf2flt/elf2flt.mk +include toolchain/gcc/gcc-uclibc-4.x.mk +include toolchain/gdb/gdb.mk +include toolchain/kernel-headers/kernel-headers.mk +include toolchain/mklibs/mklibs.mk +include toolchain/sstrip/sstrip.mk +include toolchain/toolchain-external/ext-tool.mk +include toolchain/uClibc/uclibc.mk diff --git a/toolchain/external-toolchain/Config.in b/toolchain/toolchain-external/Config.in index efc8378c0..efc8378c0 100644 --- a/toolchain/external-toolchain/Config.in +++ b/toolchain/toolchain-external/Config.in diff --git a/toolchain/external-toolchain/Config.in.2 b/toolchain/toolchain-external/Config.in.2 index 489558c0f..489558c0f 100644 --- a/toolchain/external-toolchain/Config.in.2 +++ b/toolchain/toolchain-external/Config.in.2 diff --git a/toolchain/toolchain-external/ext-tool.mk b/toolchain/toolchain-external/ext-tool.mk new file mode 100644 index 000000000..7e4645ddb --- /dev/null +++ b/toolchain/toolchain-external/ext-tool.mk @@ -0,0 +1,115 @@ + +# +# This file implements the support for external toolchains, i.e +# toolchains that have not been produced by Buildroot itself and that +# are already available on the system on which Buildroot runs. So far, +# we have tested this with: +# +# * Toolchains generated by Crosstool-NG +# * Toolchains generated by Buildroot +# * ARM, MIPS and PowerPC toolchains made available by +# Codesourcery. For the MIPS toolchain, the -muclibc variant isn't +# supported yet, only the default glibc-based variant is. +# +# The basic principle is the following +# +# 1. Perform some checks on the conformity between the toolchain +# configuration described in the Buildroot menuconfig system, and the +# real configuration of the external toolchain. This is for example +# important to make sure that the Buildroot configuration system +# knows whether the toolchain supports RPC, IPv6, locales, large +# files, etc. Unfortunately, these things cannot be detected +# automatically, since the value of these options (such as +# BR2_INET_RPC) are needed at configuration time because these +# options are used as dependencies for other options. And at +# configuration time, we are not able to retrieve the external +# toolchain configuration. +# +# 2. Copy the libraries needed at runtime to the target directory, +# $(TARGET_DIR). Obviously, things such as the C library, the dynamic +# loader and a few other utility libraries are needed if dynamic +# applications are to be executed on the target system. +# +# 3. Copy the libraries and headers to the staging directory. This +# will allow all further calls to gcc to be made using --sysroot +# $(STAGING_DIR), which greatly simplifies the compilation of the +# packages when using external toolchains. So in the end, only the +# cross-compiler binaries remains external, all libraries and headers +# are imported into the Buildroot tree. + +uclibc: dependencies $(STAMP_DIR)/ext-toolchain-installed + +LIB_EXTERNAL_LIBS=ld*.so libc.so libcrypt.so libdl.so libgcc_s.so libm.so libnsl.so libresolv.so librt.so libutil.so +ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC),y) +LIB_EXTERNAL_LIBS+=libnss_files.so libnss_dns.so +endif + +ifeq ($(BR2_INSTALL_LIBSTDCPP),y) +USR_LIB_EXTERNAL_LIBS+=libstdc++.so +endif + +ifneq ($(BR2_PTHREADS_NONE),y) +LIB_EXTERNAL_LIBS+=libpthread.so +ifeq ($(BR2_PACKAGE_GDB_SERVER),y) +LIB_EXTERNAL_LIBS+=libthread_db.so +endif # gdbserver +endif # ! no threads + +# SYSROOT_DIR selection. We first try the -print-sysroot option, +# available in gcc 4.4.x and in some Codesourcery toolchains. If this +# option is not available, we fallback to the value of --with-sysroot +# as visible in CROSS-gcc -v. We don't pass any option to gcc that +# could select a multilib variant as we want the "main" sysroot, which +# contains all variants of the C library in the case of multilib +# toolchains. +TARGET_CC_NO_SYSROOT=$(filter-out --sysroot=%,$(TARGET_CC)) +SYSROOT_DIR=$(shell $(TARGET_CC_NO_SYSROOT) -print-sysroot 2>/dev/null) +ifeq ($(SYSROOT_DIR),) +SYSROOT_DIR=$(shell readlink -f $$(LANG=C $(TARGET_CC_NO_SYSROOT) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;') +endif + +# Now, find if the toolchain specifies a sub-directory for the +# specific architecture variant we're interested in. This is the case +# with multilib toolchain, when the selected architecture variant is +# not the default one. To do so, we ask the compiler by passing all +# flags, except the --sysroot flag since we want to the compiler to +# tell us where its original sysroot is. ARCH_SUBDIR will contain the +# subdirectory, in the main SYSROOT_DIR, that corresponds to the +# selected architecture variant. ARCH_SYSROOT_DIR will contain the +# full path to this location. +ARCH_SUBDIR=$(shell $(TARGET_CC_NO_SYSROOT) $(TARGET_CFLAGS) -print-multi-directory) +ARCH_SYSROOT_DIR=$(SYSROOT_DIR)/$(ARCH_SUBDIR) + +$(STAMP_DIR)/ext-toolchain-installed: + @echo "Checking external toolchain settings" + $(Q)$(call check_cross_compiler_exists) +ifeq ($(strip $(SYSROOT_DIR)),) + @echo "External toolchain doesn't support --sysroot. Cannot use." + exit 1 +endif +ifeq ($(BR2_arm),y) + $(Q)$(call check_arm_abi) +endif +ifeq ($(BR2_INSTALL_LIBSTDCPP),y) + $(Q)$(call check_cplusplus) +endif +ifeq ($(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y) + $(Q)$(call check_uclibc,$(SYSROOT_DIR)) +else + $(Q)$(call check_glibc,$(SYSROOT_DIR)) +endif + mkdir -p $(TARGET_DIR)/lib + @echo "Copy external toolchain libraries to target..." + $(Q)for libs in $(LIB_EXTERNAL_LIBS); do \ + $(call copy_toolchain_lib_root,$(ARCH_SYSROOT_DIR),$$libs,/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ + done + $(Q)for libs in $(USR_LIB_EXTERNAL_LIBS); do \ + $(call copy_toolchain_lib_root,$(ARCH_SYSROOT_DIR),$$libs,/usr/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ + done + @echo "Copy external toolchain sysroot to staging..." + $(Q)$(call copy_toolchain_sysroot,$(SYSROOT_DIR),$(ARCH_SYSROOT_DIR),$(ARCH_SUBDIR)) + # Create lib64 symbolic links if needed + $(Q)if [ -L $(ARCH_SYSROOT_DIR)/lib64 ] ; then \ + $(call create_lib64_symlinks) ; \ + fi + @touch $@ |