gnu: linux-libre: Remove glibc from CPATH before the build.
Fixes <https://bugs.gnu.org/37593>. * gnu/packages/linux.scm (make-linux-libre*)[arguments]: Drop "libc" from CPATH.
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@ -663,6 +663,7 @@ for ARCH and optionally VARIANT, or #f if there is no such configuration."
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`(#:modules ((guix build gnu-build-system)
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(guix build utils)
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(srfi srfi-1)
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(srfi srfi-26)
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(ice-9 match))
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#:phases
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(modify-phases %standard-phases
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@ -679,6 +680,18 @@ for ARCH and optionally VARIANT, or #f if there is no such configuration."
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,@(if (%current-target-system)
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'((unsetenv "CROSS_CPATH"))
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'())
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;; On AArch64 (at least), we need to remove glibc headers from CPATH
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;; (they are still available as "system headers"), so that the kernel
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;; can override uint64_t. See <https://bugs.gnu.org/37593>.
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(setenv "CPATH"
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(string-join
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(remove (cut string-prefix? (assoc-ref inputs "libc") <>)
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(string-split (getenv "CPATH") #\:))
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":"))
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(format #t "environment variable `CPATH' changed to `~a'~%"
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(getenv "CPATH"))
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;; Avoid introducing timestamps
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(setenv "KCONFIG_NOTIMESTAMP" "1")
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(setenv "KBUILD_BUILD_TIMESTAMP" (getenv "SOURCE_DATE_EPOCH"))
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