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-rw-r--r--pkgs/tools/archivers/zpaq/default.nix12
-rw-r--r--pkgs/tools/archivers/zpaq/zpaqd.nix4
2 files changed, 6 insertions, 10 deletions
diff --git a/pkgs/tools/archivers/zpaq/default.nix b/pkgs/tools/archivers/zpaq/default.nix
index 150633e620ae4..6d0f00f514903 100644
--- a/pkgs/tools/archivers/zpaq/default.nix
+++ b/pkgs/tools/archivers/zpaq/default.nix
@@ -13,17 +13,13 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ perl /* for pod2man */ ];
 
-  preBuild = let
-    CPPFLAGS = with stdenv; ""
-      + (lib.optionalString (!isi686 && !isx86_64) "-DNOJIT ")
-      + "-Dunix";
-    CXXFLAGS = "-O3 -DNDEBUG";
-  in ''
-    buildFlagsArray=( "CPPFLAGS=${CPPFLAGS}" "CXXFLAGS=${CXXFLAGS}" )
-  '';
+  CPPFLAGS = [ "-Dunix" ] ++
+    lib.optional (!stdenv.isi686 && !stdenv.isx86_64) "-DNOJIT";
+  CXXFLAGS = [ "-O3" "-DNDEBUG" ];
 
   enableParallelBuilding = true;
 
+  makeFlags = [ "CXX=${stdenv.cc.targetPrefix}c++" ];
   installFlags = [ "PREFIX=$(out)" ];
 
   meta = with lib; {
diff --git a/pkgs/tools/archivers/zpaq/zpaqd.nix b/pkgs/tools/archivers/zpaq/zpaqd.nix
index 1d674911f49ee..6896897be3b15 100644
--- a/pkgs/tools/archivers/zpaq/zpaqd.nix
+++ b/pkgs/tools/archivers/zpaq/zpaqd.nix
@@ -19,8 +19,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ unzip ];
 
   buildPhase = ''
-    g++ ${compileFlags} -fPIC --shared libzpaq.cpp -o libzpaq.so
-    g++ ${compileFlags} -L. -L"$out/lib" -lzpaq zpaqd.cpp -o zpaqd
+    $CXX ${compileFlags} -fPIC --shared libzpaq.cpp -o libzpaq.so
+    $CXX ${compileFlags} -L. -L"$out/lib" -lzpaq zpaqd.cpp -o zpaqd
   '';
 
   installPhase = ''