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-rw-r--r--gnu/packages/crypto.scm2
1 files changed, 2 insertions, 0 deletions
diff --git a/gnu/packages/crypto.scm b/gnu/packages/crypto.scm
index 1ec6c47239..c3d3e3658c 100644
--- a/gnu/packages/crypto.scm
+++ b/gnu/packages/crypto.scm
@@ -750,6 +750,8 @@ SHA256, SHA512, SHA3, AICH, ED2K, Tiger, DC++ TTH, BitTorrent BTIH, GOST R
(lambda* (#:key inputs outputs #:allow-other-keys)
(let* ((out (assoc-ref %outputs "out"))
(lib (string-append out "/lib")))
+ ;; Upstream tests and benchmarks with -O3.
+ (setenv "CXXFLAGS" "-O3")
(invoke "python" "./configure.py"
(string-append "--prefix=" out)
;; Otherwise, the `botan` executable cannot find