Fix cross compilation for lmbench

pkgs/lmbench/default.nix

@@ -22,7 +22,11 @@ stdenv.mkDerivation rec {
   '';
 
   buildInputs = [ libtirpc ];
-  patches = [ ./fix-install.patch ./gcc-14.patch ];
+  patches = [
+    ./fix-install.patch
+    ./gcc-14.patch
+    ./fix-cross.patch
+  ];
 
   hardeningDisable = [ "all" ];
 
@@ -35,6 +39,8 @@ stdenv.mkDerivation rec {
       CFLAGS=-Wno-implicit-int
       CPPFLAGS=-I${libtirpc.dev}/include/tirpc
       LDFLAGS=-ltirpc
+      CC=${stdenv.cc.targetPrefix}cc
+      AR=${stdenv.cc.targetPrefix}ar
     )
   '';
 

pkgs/lmbench/fix-cross.patch

@@ -0,0 +1,13 @@
+diff --git a/src/Makefile b/src/Makefile
+index 2555014..356eeb3 100644
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -36,7 +36,7 @@ SHELL=/bin/sh
+ 
+ CC=`../scripts/compiler`
+ MAKE=`../scripts/make`
+-AR=ar
++AR?=ar
+ ARCREATE=cr
+ 
+ # base of installation location