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gnu: llvm: Add 'system->llvm-target' procedure. 

* gnu/packages/llvm.scm (system->llvm-target): New procedure.
This commit is contained in:
Ludovic Courtès 2019-07-23 16:57:25 +02:00
parent c42db89ff9
commit 96a9a8d398
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1 changed files with 24 additions and 1 deletions
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25
gnu/packages/llvm.scm
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@ -46,7 +46,30 @@
#:use-module (gnu packages perl)
#:use-module (gnu packages pkg-config)
#:use-module (gnu packages python)
#:use-module (gnu packages xml))
#:use-module (gnu packages xml)
#:export (system->llvm-target))
(define* (system->llvm-target #:optional
(system (or (and=> (%current-target-system)
gnu-triplet->nix-system)
(%current-system))))
"Return the LLVM target name that corresponds to SYSTEM, a system type such
as \"x86_64-linux\"."
;; See the 'lib/Target' directory of LLVM for a list of supported targets.
(letrec-syntax ((matches (syntax-rules (=>)
((_ (system-prefix => target) rest ...)
(if (string-prefix? system-prefix system)
target
(matches rest ...)))
((_)
(error "LLVM target for system is unknown" system)))))
(matches ("aarch64" => "AArch64")
("armhf" => "ARM")
("mips64el" => "Mips")
("powerpc" => "PowerPC")
("riscv" => "RISCV")
("x86_64" => "X86")
("i686" => "X86"))))
(define-public llvm-8
(package