push sheeet

pkgs/development/compilers/gcc/common/extra-target-flags.nix

@@ -0,0 +1,58 @@
+{
+  lib,
+  stdenv,
+  withoutTargetLibc,
+  libcCross,
+  threadsCross,
+}:
+
+let
+  inherit (stdenv) hostPlatform targetPlatform;
+in
+
+{
+  # For non-cross builds these flags are currently assigned in builder.sh.
+  # It would be good to consolidate the generation of makeFlags
+  # ({C,CXX,LD}FLAGS_FOR_{BUILD,TARGET}, etc...) at some point.
+  EXTRA_FLAGS_FOR_TARGET =
+    let
+      mkFlags =
+        dep:
+        lib.optionals ((!lib.systems.equals targetPlatform hostPlatform) && dep != null) (
+          [
+            "-O2 -idirafter ${lib.getDev dep}${dep.incdir or "/include"}"
+          ]
+          ++ lib.optionals (!withoutTargetLibc) [
+            "-B${lib.getLib dep}${dep.libdir or "/lib"}"
+          ]
+        );
+    in
+    mkFlags libcCross
+    ++ lib.optionals (!withoutTargetLibc) (mkFlags (threadsCross.package or null))
+    ++ mkFlags (libcCross.w32api or null);
+
+  EXTRA_LDFLAGS_FOR_TARGET =
+    let
+      mkFlags =
+        dep:
+        lib.optionals ((!lib.systems.equals targetPlatform hostPlatform) && dep != null) (
+          [
+            "-Wl,-L${lib.getLib dep}${dep.libdir or "/lib"}"
+          ]
+          ++ (
+            if withoutTargetLibc then
+              [
+                "-B${lib.getLib dep}${dep.libdir or "/lib"}"
+              ]
+            else
+              [
+                "-Wl,-rpath,${lib.getLib dep}${dep.libdir or "/lib"}"
+                "-Wl,-rpath-link,${lib.getLib dep}${dep.libdir or "/lib"}"
+              ]
+          )
+        );
+    in
+    mkFlags libcCross
+    ++ lib.optionals (!withoutTargetLibc) (mkFlags (threadsCross.package or null))
+    ++ mkFlags (libcCross.w32api or null);
+}