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2012-03-01external-toolchain: add support for Linaro 2012.01Thomas Petazzoni
Linaro has just released a new pre-built toolchain, available as a tarball, which is a pure toolchain (only the C library is included). This makes this new Linaro 2012.01 toolchain usable in Buildroot, so let's integrate the support for it. In addition to simply adding the new external toolchain at the usual locations, this patch allows need to adapt a few things to support Linaro toolchains. Most toolchains store their libraries in the "lib/" or "usr/lib" directories relative to the toolchain. Buildroot toolchains on the other hand, store the libraries in the "usr/<target-name>/lib" directory. And the Linaro toolchain has choosen to use the "lib/<target-name>" directory. Therefore, this patch adjust: * The logic to search a particular library when that library needs to be copied to the target directory * The logic to deduce the sysroot directory from the libc.a file location in the toolchain: removing "(usr/?)lib(64?)" is no longer sufficient, we need to take into account the "lib/<target-name>/" case. Since the Linaro toolchain generates code for Cortex-A processors only, the selection of this toolchain is limited to Cortex-A8 and Cortex-A9. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2012-03-01external-toolchain: adjust check for uClibc static toolchainsThomas Petazzoni
The current check for uClibc toolchain was verifying that a ld-uClibc.so dynamic loader was present. However, with static-only uClibc toolchains, this does not work. Instead, we check for an uClibc-specific header file in the sysroot. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2012-03-01Support multilib variants in sub-subdirectoriesThomas Petazzoni
When an external toolchain has multiple variants organized in sub-directories, Buildroot only copies the selected sysroot and not all sysroots. In order to make this work, Buildroot creates a symbolic link of the name of the original selected sysroot to the main sysroot to trick the compiler so that it finds its libraries at the expected location. I.e, if the toolchain as the following organization (example take on the ARM CodeSourcery toolchain) : . for ARMv5T armv4 for ARMv4T thumb2 for ARMv7-A/Thumb and ARMv4T is selected, then Buildroot will copy the contents of armv4t/ from the toolchain into its $(STAGING_DIR) and then create a $(STAGING_DIR)/armv4t symbolic link to $(STAGING_DIR). However, our logic to do so only works when there was one directory level for multilib sysroots. But in the MIPS CodeSourcery toolchain there are multiple levels. For example, the MIPS16 soft-float little-endian sysroot variant is in mips16/soft-float/el/ compared to the main sysroot. This patch improves our logic to support this case. The logic is a bit more complicated as we don't want to create a symbolic link to an absolute path, but a symbolic link to a relative path, because we want the host/ directory to be relocatable. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2012-03-01Improve external toolchain logic to support IA32 Sourcery CodeBench toolchainThomas Petazzoni
The IA32 Sourcery CodeBench toolchain has a relatively special structure, with the following multilib variants: * Intel Pentium 4, 32 bits, the multilib variant is in ./ relative to the main sysroot, with the libraries in the lib/ directory. * Intel Xeon Nocona, 64 bits, the multilib variant is in ./ relative to the main sysroot, with the libraries in the lib64/ directory. * Intel Atom 32 bits, the multilib variant is in atom/ relative to the main sysroot, with the libraries in the lib/ directory. * Intel Core 2 64 bits, the multilib variant is in core2/ relative to the main sysroot, with the libraries in lib64/ directory. So the first two variants are in the same sysroot, only the name of the directory for the libraries is different. Therefore, we introduce a new ARCH_LIB_DIR variable, which contains either 'lib' or 'lib64'. This variable is defined according to the location of the libc.a file for the selected multilib variant, and is then used when copying the libraries to the target and to the staging directory. In addition to this, we no longer use the -print-multi-directory to get the ARCH_SUBDIR, since in the case of the 64 bits variants of this toolchain, it returns just '64' and not a real path. Instead, we simply compute the difference between the arch-specific sysroot and the main sysroot. We also take that opportunity to expand the documentation on the meaning of the different variables. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2011-11-24gdb: fix kconfig dependency handling with !BR_TOOLCHAIN_BUILDROOTPeter Korsgaard
Newer versions of GDB need pthread debugging support if threads are enabled, which is always the case for glibc but is a configure option for uClibc. We have solved this for internal toolchains by selecting the BR2_PTHREAD_DEBUG option from the GDB selection if needed, but as this option isn't available when ctng/external toolchains are used, mconf prints ugly warnings and the build may fail if an external uClibc toolchain without pthread debugging support is used. Fix it by introducing 2 more hidden config options: - BR2_TOOLCHAIN_HAS_THREADS_DEBUG - BR2_TOOLCHAIN_HAS_THREADS_DEBUG_IF_NEEDED The first tells us if the toolchain HAS pthreads debugging support, and is checked by check_uclibc_feature in helper.mk for external uClibc based toolchains. The second tells us if the toolchain is ABLE TO provide pthreads debugging support if threads are enabled, either because it's an internal toolchain where we can force enable it or an external glibc/eglibc toolchain or uClibc with the option enabled. Crosstool-ng forcibly enables this support, so those will always work. The preconfigured uClibc-based toolchains we have also all enable it. Finally, show a comment if this isn't the case so the (external toolchain) user knows why. This is placed outside the choice option, as menuconfig has a bug where it doesn't show choice selections which only contain comments. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-11-02ext-toolchain: fix ct-ng as external rsync issuesGustavo Zacarias
When using a CT-NG toolchain as external toolchain (not with the integration) and said toolchain has u-w directories rsync fails. So instruct rsync to chmod u+w directories in the target copy to avoid the issue. [Peter: notice that this is a workaround for a rsync 3.0.8 bug] Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-10-10toolchain: speed up sysroot lib copyingMike Frysinger
The copy_toolchain_lib_root helper searches the entire sysroot, but is only interested in files in certain subdirs. So rather than waste time in walking the entire tree, walk the few subdirs at the depth level we are actually going to be poaching files from. Some simplification suggested by Yann E. MORIN <yann.morin.1998@anciens.enib.fr> and Arnout Vandecappelle <arnout@mind.be>, added by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-10-09external toolchain: slightly optimize the copy of the toolchain sysrootThomas Petazzoni
The sysroot of an ARM CodeSourcery toolchain takes about 1.4 GB of space, but 1.1+ GB of this space consists in locale-related information which Buildroot doesn't use. By skipping the copy of those unused files, we save quite a bit of time while importing the toolchain sysroot. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-07-29toolchain/helpers.mk: unbreak check_glibc after PROGRAM_INVOCATION removalPeter Korsgaard
As noticed by Thomas Petazzoni on IRC. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-07-27uClibc: drop BR2_PROGRAM_INVOCATION optionPeter Korsgaard
Remove the BR option and enable the configuration setting in the uClibc defconfigs. The BR2_PROGRAM_INVOCATION option only adds very little overhead to uClibc, and we have a number of packages needing it, so simply always enable it - Simplifying the kconfig logic and the number of choices users have to make. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-05-08external-toolchain: fix supportThomas Petazzoni
The recent commit adding the external toolchain wrapper has broken the support for external toolchain. The check_arm_eabi, check_cplusplus and check_cross_compiler_exists functions were using TARGET_CC, which points to the toolchain wrapper, but at the moment those functions are called, the wrapper hasn't been generated yet. We fix this by passing to these functions the path to the C or C++ compiler they should use for their tests. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-01-15toolchain: add a USE_MMU build optionMike Frysinger
Some packages need to know whether the MMU is in play, so add a toolchain option to expose the feature to them. [Peter: only show option on archs where it makes sense] Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-12-21toolchain: fix multilib symlink for external toolchainsThomas Petazzoni
ARCH_SUBDIR is a shell variable, so it should be referenced with $${ARCH_SUBDIR}. Without this, no symbolic link is created, and the external toolchain fails to work if the non-default multilib variant is used. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-12-13toolchain: check that the thread option selection is correctThomas Petazzoni
When an external toolchain is used, the user is responsible for telling Buildroot what the configuration of the toolchain is. In order to make sure that the selection is correct, we already perform checks against the configuration of the uClibc in the selected external toolchain. This commit adds the check for thread support. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-12-13toolchain: rework C++ optionsThomas Petazzoni
Instead of having BR2_GCC_CROSS_CXX and BR2_INSTALL_LIBSTDCPP, with BR2_GCC_CROSS_CXX not being visible (and therefore being useless), let's just keep BR2_INSTALL_LIBSTDCPP to enable C++ in the toolchain and install C++ libraries on the target. We also take that opportunity to make BR2_INSTALL_LIBSTDCPP an hidden option, which is selected by an option in Buildroot toolchain support or an option in External toolchain support, just as we did for other toolchain features. Some work definitely remains to be done : - The name BR2_INSTALL_LIBSTDCPP is ugly, but we keep it for the moment in order to avoid changing all packages. - We should clarify the other language-related options (Fortran, Java, Objective-C, etc.). Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-12-13toolchain: remove toolchain-specific strippingThomas Petazzoni
We already handle the stripping of libraries in $(TARGET_DIR) at the global level, so there's no need to have toolchain-specific option and code for this. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-12-13toolchain: remove ending semi-colon in helpersThomas Petazzoni
Some helpers had their final line ending with a semi-colon, some did not. For consistency, remove the final semi-colon from all helpers, it's the responsability of the caller to add the final semi-colon as needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-09-30toolchain: fix helpers for POSIX complianceYann E. MORIN
Using two '=' for string comparison is a bashism. Revert to using one, as stated in POSIX 1003.1-2008. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-07-28toolchain: move helper functions from external toolchainYann E. MORIN
The helper functions used for external toolchains may also be useful to alternate toolchain backends (currently, the external toolchain is the sole user). Signed-off-by: Yann E. MORIN <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>