diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
index e7fcf173c6026..bba00f0adbec0 100644
--- a/pkgs/build-support/bintools-wrapper/default.nix
+++ b/pkgs/build-support/bintools-wrapper/default.nix
@@ -334,7 +334,7 @@ stdenvNoCC.mkDerivation {
       hardening_unsupported_flags+=" pic"
     ''
 
-    + optionalString (targetPlatform.isAvr || targetPlatform.isWindows) ''
+    + optionalString (targetPlatform.isAvr || targetPlatform.isWindows || targetPlatform.isWasi) ''
       hardening_unsupported_flags+=" relro bindnow"
     ''
 
diff --git a/pkgs/build-support/rust/lib/default.nix b/pkgs/build-support/rust/lib/default.nix
index e09f913bfbd39..777bcb21fd181 100644
--- a/pkgs/build-support/rust/lib/default.nix
+++ b/pkgs/build-support/rust/lib/default.nix
@@ -23,8 +23,10 @@ rec {
 
     ccForHost = "${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
     cxxForHost = "${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++";
-    linkerForHost = if shouldUseLLD stdenv.targetPlatform
-      && !stdenv.cc.bintools.isLLVM
+    # For wasi: Rust recognizes "clang" or "gcc" as compilers, but not "cc" as in ccForHost.
+    #           So it defaults to expecting lld and passes arguments accordingly.
+    linkerForHost = if stdenv.targetPlatform.isWasi
+      || (shouldUseLLD stdenv.targetPlatform && !stdenv.cc.bintools.isLLVM)
       then "${pkgsBuildHost.llvmPackages.bintools}/bin/${stdenv.cc.targetPrefix}ld.lld"
       else ccForHost;