diff --git a/pkgs/development/libraries/febio/default.nix b/pkgs/development/libraries/febio/default.nix
index 4d01bf52bf7..d0c54b8b157 100644
--- a/pkgs/development/libraries/febio/default.nix
+++ b/pkgs/development/libraries/febio/default.nix
@@ -1,5 +1,6 @@
 { lib, stdenv, fetchFromGitHub, cmake, boost, eigen, libxml2, mpi, python3
 , mklSupport ? true, mkl
+, substituteAll
 }:
 
 stdenv.mkDerivation rec {
@@ -14,13 +15,18 @@ stdenv.mkDerivation rec {
   };
 
   patches = [
-    ./fix-cmake.patch  # cannot find mkl libraries without this
+    (substituteAll {
+      src = ./fix-cmake.patch;  # cannot find mkl libraries without this
+      so = stdenv.hostPlatform.extensions.sharedLibrary;
+    })
   ];
 
   cmakeFlags = lib.optional mklSupport "-DUSE_MKL=On"
     ++ lib.optional mklSupport "-DMKLROOT=${mkl}"
   ;
 
+  env.CXXFLAGS = lib.optionalString stdenv.isLinux "-include cstring";
+
   installPhase = ''
     runHook preInstall
 
diff --git a/pkgs/development/libraries/febio/fix-cmake.patch b/pkgs/development/libraries/febio/fix-cmake.patch
index 5af10a0b396..456179ca836 100644
--- a/pkgs/development/libraries/febio/fix-cmake.patch
+++ b/pkgs/development/libraries/febio/fix-cmake.patch
@@ -5,7 +5,7 @@
              PATHS ${${libDir}} NO_DEFAULT_PATH)
      else()
 -        find_library(TEMP NAMES lib${libName}.a lib${ARGV3}.a lib${ARGV4}.a lib${ARGV5}.a lib${ARGV6}.a
-+        find_library(TEMP NAMES lib${libName}.a lib${ARGV3}.a lib${ARGV4}.a lib${ARGV5}.a lib${ARGV6}.a lib${libName}.so lib${ARGV3}.so lib${ARGV4}.so lib${ARGV5}.so lib${ARGV6}.so
++        find_library(TEMP NAMES lib${libName}.a lib${ARGV3}.a lib${ARGV4}.a lib${ARGV5}.a lib${ARGV6}.a lib${libName}@so@ lib${ARGV3}@so@ lib${ARGV4}@so@ lib${ARGV5}@so@ lib${ARGV6}@so@
              PATHS ${${libDir}} NO_DEFAULT_PATH)
      endif()
      
@@ -19,7 +19,7 @@ index 2d644005f..7261ba923 100644
          find_library(MKL_OMP_LIB 
 -            NAMES iomp5 iomp5md libiomp5md.lib
 -            PATHS ${MKLROOT}/../lib ${MKLROOT}/../compiler/lib
-+            NAMES libiomp5.so libiomp5 iomp5 iomp5md libiomp5md.lib
++            NAMES libiomp5@so@ libiomp5 iomp5 iomp5md libiomp5md.lib
 +            PATHS ${MKLROOT}/lib ${MKLROOT}/../lib ${MKLROOT}/../compiler/lib
              PATH_SUFFIXES "intel64" "intel32"
              NO_DEFAULT_PATH