gnu: infamous-plugins: Remove compiler optimizations.

* gnu/packages/audio.scm (infamous-plugins)[arguments]: Add phase
removing built-in compiler optimizations in the source code.

gnu/packages/audio.scm

@@ -351,8 +351,24 @@ tools (analyzer, mono/stereo tools, crossovers).")
                (base32
                 "0qm3ak07vc1l3f5c3c2lq9gkfknlxwn8ks03cysw1pk8hj7dwnv6"))))
     (build-system cmake-build-system)
-    ;; There are no tests
+    (arguments
-    (arguments `(#:tests? #f))
+     `(#:tests? #f ; There are no tests
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'remove-compiler-flags
+           (lambda _
+             (substitute* '("src/casynth/CMakeLists.txt"
+                            "src/cheapdist/CMakeLists.txt"
+                            "src/duffer/CMakeLists.txt"
+                            "src/envfollower/CMakeLists.txt"
+                            "src/ewham/CMakeLists.txt"
+                            "src/hip2b/CMakeLists.txt"
+                            "src/lushlife/CMakeLists.txt"
+                            "src/powercut/CMakeLists.txt"
+                            "src/powerup/CMakeLists.txt"
+                            "src/stuck/CMakeLists.txt")
+                          (("-msse2 -mfpmath=sse") ""))
+             #t)))))
     (inputs
      `(("cairo" ,cairo)
        ("fftwf" ,fftwf)