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-rw-r--r--gnu/packages/boost.scm4
1 files changed, 3 insertions, 1 deletions
diff --git a/gnu/packages/boost.scm b/gnu/packages/boost.scm
index ccc1f0664f..ab31fa8c5c 100644
--- a/gnu/packages/boost.scm
+++ b/gnu/packages/boost.scm
@@ -90,7 +90,9 @@
          (replace
              'build
            (lambda* (#:key outputs make-flags #:allow-other-keys)
-             (zero? (apply system* "./b2" make-flags))))
+             (zero? (apply system* "./b2"
+                           (format #f "-j~a" (parallel-job-count))
+                           make-flags))))
          (replace
              'install
            (lambda* (#:key outputs make-flags #:allow-other-keys)