cross: Allow Windows toolchains to use ucrt as libc.

1 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/development/compilers/gcc/9/default.nix b/pkgs/development/compilers/gcc/9/default.nix
index 2ecfa1bb1cf..09e4ef3fdff 100644
--- a/pkgs/development/compilers/gcc/9/default.nix
+++ b/pkgs/development/compilers/gcc/9/default.nix
@@ -98,7 +98,7 @@ let majorVersion = "9";
       ++ [ ../libsanitizer-no-cyclades-9.patch ];
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -311,7 +311,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }