4 files changed, 4 insertions, 4 deletions
diff --git a/pkgs/development/compilers/gcc/common/platform-flags.nix b/pkgs/development/compilers/gcc/common/platform-flags.nix
index 66af8c4a4cc77..f3cdce4119397 100644
--- a/pkgs/development/compilers/gcc/common/platform-flags.nix
+++ b/pkgs/development/compilers/gcc/common/platform-flags.nix
@@ -1,7 +1,7 @@
 { lib, targetPlatform }:
 
 let
-  p =  targetPlatform.gcc or {}
+  p =  targetPlatform.platform.gcc or {}
     // targetPlatform.parsed.abi;
 in lib.concatLists [
   (lib.optional (!targetPlatform.isx86_64 && p ? arch) "--with-arch=${p.arch}") # --with-arch= is unknown flag on x86_64
diff --git a/pkgs/development/compilers/julia/1.0.nix b/pkgs/development/compilers/julia/1.0.nix
index 78f7c2ef1b91c..0325632ad0ab9 100644
--- a/pkgs/development/compilers/julia/1.0.nix
+++ b/pkgs/development/compilers/julia/1.0.nix
@@ -123,7 +123,7 @@ stdenv.mkDerivation rec {
     let
       arch = stdenv.lib.head (stdenv.lib.splitString "-" stdenv.system);
       march = {
-        x86_64 = stdenv.hostPlatform.gcc.arch or "x86-64";
+        x86_64 = stdenv.hostPlatform.platform.gcc.arch or "x86-64";
         i686 = "pentium4";
         aarch64 = "armv8-a";
       }.${arch}
diff --git a/pkgs/development/compilers/julia/1.3.nix b/pkgs/development/compilers/julia/1.3.nix
index 2a270b7c72c18..8096af0b320c2 100644
--- a/pkgs/development/compilers/julia/1.3.nix
+++ b/pkgs/development/compilers/julia/1.3.nix
@@ -73,7 +73,7 @@ stdenv.mkDerivation rec {
     let
       arch = head (splitString "-" stdenv.system);
       march = {
-        x86_64 = stdenv.hostPlatform.gcc.arch or "x86-64";
+        x86_64 = stdenv.hostPlatform.platform.gcc.arch or "x86-64";
         i686 = "pentium4";
         aarch64 = "armv8-a";
       }.${arch}
diff --git a/pkgs/development/compilers/julia/1.5.nix b/pkgs/development/compilers/julia/1.5.nix
index 778a9c3a9d796..be3cfc39635c7 100644
--- a/pkgs/development/compilers/julia/1.5.nix
+++ b/pkgs/development/compilers/julia/1.5.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
     let
       arch = head (splitString "-" stdenv.system);
       march = {
-        x86_64 = stdenv.hostPlatform.gcc.arch or "x86-64";
+        x86_64 = stdenv.hostPlatform.platform.gcc.arch or "x86-64";
         i686 = "pentium4";
         aarch64 = "armv8-a";
       }.${arch}