toolchain: fix the helpers.mk comment
This commit fixes various typos and mistakes in the comment at the top of the helpers.mk file: * usefull -> useful * The optional stripping of libraries no longer exists, so there's no reason to mention it. * Indicate that the copy_toolchain_lib_root function is also used by the glibc package, not only by the external toolchain logic. * Separate more clearly the top comment introducing the entire file, from the comment introducing the first function. [Peter: reword top comment, add missing 'by'] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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@ -1,9 +1,10 @@
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# This Makefile fragment declares helper functions, usefull to handle
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# non- buildroot-built toolchains, eg. purely external toolchains.
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#
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# Copy a toolchain library and its symbolic links from the sysroot
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# directory to the target directory. Also optionaly strips the
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# library.
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# This Makefile fragment declares toolchain related helper functions.
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# The copy_toolchain_lib_root function copies a toolchain library and
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# its symbolic links from the sysroot directory to the target
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# directory. Note that this function is used both by the external
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# toolchain logic, and the glibc package, so care must be taken when
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# changing this function.
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#
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# Most toolchains (CodeSourcery ones) have their libraries either in
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# /lib or /usr/lib relative to their ARCH_SYSROOT_DIR, so we search
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