1 files changed, 7 insertions, 2 deletions
diff --git a/pkgs/development/compilers/llvm/3.9/libc++/default.nix b/pkgs/development/compilers/llvm/3.9/libc++/default.nix
index 7e5c30bdfd35..da18e10c68a6 100644
--- a/pkgs/development/compilers/llvm/3.9/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/3.9/libc++/default.nix
@@ -17,7 +17,12 @@ stdenv.mkDerivation rec {
   patches = [
     # glibc 2.26 fix
     ./xlocale-glibc-2.26.patch
-  ] ++ lib.optional stdenv.isDarwin ./darwin.patch;
+  ]
+  ++ lib.optional stdenv.isDarwin ./darwin.patch
+  ++ stdenv.lib.optionals stdenv.hostPlatform.isMusl [
+    ../../libcxx-0001-musl-hacks.patch
+    ../../libcxx-max_align_t.patch
+  ];
 
   buildInputs = [ cmake libcxxabi ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
 
@@ -25,7 +30,7 @@ stdenv.mkDerivation rec {
       "-DLIBCXX_LIBCXXABI_LIB_PATH=${libcxxabi}/lib"
       "-DLIBCXX_LIBCPPABI_VERSION=2"
       "-DLIBCXX_CXX_ABI=libcxxabi"
-    ];
+  ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "-DLIBCXX_HAS_MUSL_LIBC=1";
 
   enableParallelBuilding = true;