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-rw-r--r--pkgs/development/libraries/speech-tools/default.nix4
1 files changed, 4 insertions, 0 deletions
diff --git a/pkgs/development/libraries/speech-tools/default.nix b/pkgs/development/libraries/speech-tools/default.nix
index 11f8ee46969..8e5ee80b0bf 100644
--- a/pkgs/development/libraries/speech-tools/default.nix
+++ b/pkgs/development/libraries/speech-tools/default.nix
@@ -14,6 +14,10 @@ stdenv.mkDerivation rec {
   preConfigure = ''
     sed -e s@/usr/bin/@@g -i $( grep -rl '/usr/bin/' . )
     sed -re 's@/bin/(rm|printf|uname)@\1@g' -i $( grep -rl '/bin/' . )
+
+    # c99 makes isnan valid for float and double
+    substituteInPlace include/EST_math.h \
+      --replace '__isnanf(X)' 'isnan(X)'
   '';
 
   installPhase = ''