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gnu: libcxx: Hide GCC's C++ headers during the build process.

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* gnu/packages/llvm.scm (libcxx)[arguments]: New field.
This commit is contained in:
Marius Bakke 2020-03-15 16:08:06 +01:00
parent f42bfc7a99
commit 40a461fd97
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1 changed files with 17 additions and 0 deletions
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gnu/packages/llvm.scm
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@ -671,6 +671,23 @@ output), and Binutils.")
(base32
"0d2bj5i6mk4caq7skd5nsdmz8c2m5w5anximl5wz3x32p08zz089"))))
(build-system cmake-build-system)
(arguments
`(#:phases
(modify-phases (@ (guix build cmake-build-system) %standard-phases)
(add-after 'set-paths 'adjust-CPLUS_INCLUDE_PATH
(lambda* (#:key inputs #:allow-other-keys)
(let ((gcc (assoc-ref inputs "gcc")))
;; Hide GCC's C++ headers so that they do not interfere with
;; the ones we are attempting to build.
(setenv "CPLUS_INCLUDE_PATH"
(string-join (delete (string-append gcc "/include/c++")
(string-split (getenv "CPLUS_INCLUDE_PATH")
#\:))
":"))
(format #t
"environment variable `CPLUS_INCLUDE_PATH' changed to ~a~%"
(getenv "CPLUS_INCLUDE_PATH"))
#t))))))
(native-inputs
`(("clang" ,clang)
("llvm" ,llvm)))