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gnu: libstdc++: Fix cross-compilation.

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* gnu/packages/gcc.scm (make-libstdc++): Adjust 'hide-gcc-headers' for
cross-compiled libstdc++.
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Ludovic Courtès 2023-03-09 13:08:53 +01:00
parent b0f1728187
commit 0ad86e94f5
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1 changed files with 13 additions and 5 deletions
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18
gnu/packages/gcc.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012-2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2012-2023 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015, 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2014, 2015, 2016, 2017, 2019, 2021 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
@ -849,9 +849,12 @@ using compilers other than GCC."
#:phases
(modify-phases %standard-phases
,@(if (version>=? (package-version gcc) "11")
'((add-after 'unpack 'hide-gcc-headers
`((add-after 'unpack 'hide-gcc-headers
(lambda* (#:key native-inputs inputs #:allow-other-keys)
(let ((gcc (assoc-ref (or native-inputs inputs) "gcc")))
(let ((gcc (assoc-ref (or native-inputs inputs)
,(if (%current-target-system)
"cross-gcc"
"gcc"))))
;; Fix a regression in GCC 11 where the GCC headers
;; shadows glibc headers when building libstdc++. An
;; upstream fix was added in GCC 11.3.0, but it only
@ -861,11 +864,16 @@ using compilers other than GCC."
;; and the similar adjustment in GCC-FINAL.
(substitute* "libstdc++-v3/src/c++17/Makefile.in"
(("AM_CXXFLAGS = ")
(string-append "CPLUS_INCLUDE_PATH = "
(string-append ,(if (%current-target-system)
"CROSS_CPLUS_INCLUDE_PATH = "
"CPLUS_INCLUDE_PATH = ")
(string-join
(remove (cut string-prefix? gcc <>)
(string-split
(getenv "CPLUS_INCLUDE_PATH")
(getenv
,(if (%current-target-system)
"CROSS_CPLUS_INCLUDE_PATH"
"CPLUS_INCLUDE_PATH"))
#\:))
":")
"\nAM_CXXFLAGS = ")))))))