1 files changed, 5 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/tools/networking/socat/default.nix b/nixpkgs/pkgs/tools/networking/socat/default.nix
index c52bdb0802d1..255455811a65 100644
--- a/nixpkgs/pkgs/tools/networking/socat/default.nix
+++ b/nixpkgs/pkgs/tools/networking/socat/default.nix
@@ -23,6 +23,11 @@ stdenv.mkDerivation rec {
       --replace /sbin/ifconfig ifconfig
   '';
 
+  configureFlags = lib.optionals stdenv.hostPlatform.isMusl [
+    # musl doesn't have getprotobynumber_r
+    "sc_cv_getprotobynumber_r=2"
+  ];
+
   buildInputs = [ openssl readline ];
 
   hardeningEnable = [ "pie" ];