01/01: gnu: subread: Use SSE optimizations on x86_64 only.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit 104c1986ac0c786440ece5d3fe88e9d501ba65e3
Author: Ricardo Wurmus <address@hidden>
Date:   Fri Oct 23 14:16:27 2015 +0200

    gnu: subread: Use SSE optimizations on x86_64 only.
    
    * gnu/packages/bioinformatics.scm (subread)[arguments]: Override CC and
      CCFLAGS conditionally dependent on target system.
---
 gnu/packages/bioinformatics.scm |   19 ++++++++++++++++++-
 1 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index 4b7e70f..9765f1a 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -2704,7 +2704,24 @@ sequences.")
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f ;no "check" target
-       #:make-flags '("-f" "Makefile.Linux")
+      ;; The CC and CCFLAGS variables are set to contain a lot of x86_64
+      ;; optimizations by default, so we override these flags such that x86_64
+      ;; flags are only added when the build target is an x86_64 system.
+       #:make-flags
+       (list (let ((system ,(or (%current-target-system)
+                                (%current-system)))
+                   (flags '("-ggdb" "-fomit-frame-pointer"
+                            "-ffast-math" "-funroll-loops"
+                            "-fmessage-length=0"
+                            "-O9" "-Wall" "-DMAKE_FOR_EXON"
+                            "-DMAKE_STANDALONE"
+                            "-DSUBREAD_VERSION=\\\"${SUBREAD_VERSION}\\\""))
+                   (flags64 '("-mmmx" "-msse" "-msse2" "-msse3")))
+               (if (string-prefix? "x86_64" system)
+                   (string-append "CCFLAGS=" (string-join (append flags 
flags64)))
+                   (string-append "CCFLAGS=" (string-join flags))))
+             "-f" "Makefile.Linux"
+             "CC=gcc ${CCFLAGS}")
        #:phases
        (alist-cons-after
         'unpack 'enter-dir