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gnu: llvm: Let it cross-compile.

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The derivation when compiling natively remains the same,
so this doesn't cause any rebuilds.

* gnu/packages/llvm.scm (llvm-12)[arguments]<#:configure-flags>: Set
  LLVM_TABLEGEN, LLVM_DEFAULT_TARGET_TRIPLE, LLVM_TARGET_ARCH and
  LLVM_TARGETS_TO_BUILD when cross-compiling.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
This commit is contained in:
Maxime Devos 2021-09-23 23:08:25 +02:00 committed by Mathieu Othacehe
parent de47a6e13b
commit 211c3ac423
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1 changed files with 26 additions and 7 deletions
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33
gnu/packages/llvm.scm
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@ -17,6 +17,7 @@
;;; Copyright © 2020 Giacomo Leidi <goodoldpaul@autistici.org>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
;;; Copyright © 2021 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2021 Lars-Dominik Braun <lars@6xq.net>
;;;
@ -39,6 +40,7 @@ (define-module (gnu packages llvm)
#:use-module (guix packages)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix download)
#:use-module (guix gexp)
#:use-module (guix git-download)
#:use-module (guix memoization)
#:use-module (guix utils)
@ -498,13 +500,30 @@ (define-public llvm-12
(propagated-inputs
`(("zlib" ,zlib))) ;to use output from llvm-config
(arguments
`(#:configure-flags '("-DCMAKE_SKIP_BUILD_RPATH=FALSE"
"-DCMAKE_BUILD_WITH_INSTALL_RPATH=FALSE"
"-DBUILD_SHARED_LIBS:BOOL=TRUE"
"-DLLVM_ENABLE_FFI:BOOL=TRUE"
"-DLLVM_REQUIRES_RTTI=1" ; For some third-party utilities
"-DLLVM_INSTALL_UTILS=ON") ; Needed for rustc.
;; TODO(core-updates): Unconditionally use quasiquote
`(#:configure-flags
,#~(#$(if (%current-target-system)
#~quasiquote
#~quote)
;; These options are required for cross-compiling LLVM according to
;; https://llvm.org/docs/HowToCrossCompileLLVM.html.
(#$@(if (%current-target-system)
#~(,(string-append "-DLLVM_TABLEGEN="
#+(file-append this-package
"/bin/llvm-tblgen"))
#$(string-append "-DLLVM_DEFAULT_TARGET_TRIPLE="
(%current-target-system))
#$(string-append "-DLLVM_TARGET_ARCH="
(system->llvm-target))
#$(string-append "-DLLVM_TARGETS_TO_BUILD="
(system->llvm-target)))
#~())
"-DCMAKE_SKIP_BUILD_RPATH=FALSE"
"-DCMAKE_BUILD_WITH_INSTALL_RPATH=FALSE"
"-DBUILD_SHARED_LIBS:BOOL=TRUE"
"-DLLVM_ENABLE_FFI:BOOL=TRUE"
"-DLLVM_REQUIRES_RTTI=1" ; For some third-party utilities
"-DLLVM_INSTALL_UTILS=ON")) ; Needed for rustc.
;; Don't use '-g' during the build, to save space.
#:build-type "Release"
#:phases