From 8b862425310cf631c30c823eb0fa2bfd79d36823 Mon Sep 17 00:00:00 2001 From: Leo Famulari Date: Wed, 27 Oct 2021 11:29:40 -0400 Subject: [PATCH] gnu: b2sum: Build on the local machine. * gnu/packages/crypto.scm (b2sum)[arguments]: Set '#:substitutable? #f'. --- gnu/packages/crypto.scm | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/gnu/packages/crypto.scm b/gnu/packages/crypto.scm index 3acd147f25..de8bcf1d70 100644 --- a/gnu/packages/crypto.scm +++ b/gnu/packages/crypto.scm @@ -858,9 +858,18 @@ (define-public b2sum (base32 "04z631v0vzl52g73v390ask5fnzi5wg83lcjkjhpmmymaz0jn152")))) (build-system gnu-build-system) (arguments - `(#:make-flags (list (string-append "CC=" ,(cc-for-target)) - (string-append "PREFIX=" (assoc-ref %outputs "out"))) + `(;; By default, b2sum uses the compiler to generate instructions + ;; tailored to the CPU of the running machine, using "-march=native". + ;; This gives a ~1.5x speedup on a Core i5-6300U with a large dataset + ;; paged in, whereas compilation of b2sum takes ~1.5 seconds. + ;; b2sum does not support run-time feature detection: + ;; https://github.com/BLAKE2/BLAKE2/issues/1 + ;; For more information, see the discussion beginning here: + ;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=51198#13 + #:substitutable? #f #:tests? #f ; No test suite + #:make-flags (list (string-append "CC=" ,(cc-for-target)) + (string-append "PREFIX=" (assoc-ref %outputs "out"))) #:phases (modify-phases %standard-phases (add-before 'build 'change-directory -- 2.33.1