3 files changed, 8 insertions, 7 deletions
diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
index 4a56f00db49e..0abce22c6765 100644
--- a/pkgs/build-support/bintools-wrapper/default.nix
+++ b/pkgs/build-support/bintools-wrapper/default.nix
@@ -34,8 +34,8 @@ let
   targetPrefix = stdenv.lib.optionalString (targetPlatform != hostPlatform)
                                         (targetPlatform.config + "-");
 
-  bintoolsVersion = (builtins.parseDrvName bintools.name).version;
-  bintoolsName = (builtins.parseDrvName bintools.name).name;
+  bintoolsVersion = stdenv.lib.getVersion bintools;
+  bintoolsName = stdenv.lib.removePrefix targetPrefix (stdenv.lib.getName bintools);
 
   libc_bin = if libc == null then null else getBin libc;
   libc_dev = if libc == null then null else getDev libc;
@@ -74,7 +74,7 @@ in
 
 stdenv.mkDerivation {
   name = targetPrefix
-    + (if name != "" then name else stdenv.lib.removePrefix targetPrefix "${bintoolsName}-wrapper")
+    + (if name != "" then name else "${bintoolsName}-wrapper")
     + (stdenv.lib.optionalString (bintools != null && bintoolsVersion != "") "-${bintoolsVersion}");
 
   preferLocalBuild = true;
@@ -184,6 +184,7 @@ stdenv.mkDerivation {
       else if targetPlatform.isMsp430 then "msp430"
       else if targetPlatform.isAvr then "avr"
       else if targetPlatform.isAlpha then "alpha"
+      else if targetPlatform.isVc4 then "vc4"
       else throw "unknown emulation for platform: ${targetPlatform.config}";
     in if targetPlatform.useLLVM or false then ""
        else targetPlatform.platform.bfdEmulation or (fmt + sep + arch);
diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index d6037552ef6e..d02f47fde8cd 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -35,8 +35,8 @@ let
   targetPrefix = stdenv.lib.optionalString (targetPlatform != hostPlatform)
                                            (targetPlatform.config + "-");
 
-  ccVersion = (builtins.parseDrvName cc.name).version;
-  ccName = (builtins.parseDrvName cc.name).name;
+  ccVersion = stdenv.lib.getVersion cc;
+  ccName = stdenv.lib.removePrefix targetPrefix (stdenv.lib.getName cc);
 
   libc_bin = if libc == null then null else getBin libc;
   libc_dev = if libc == null then null else getDev libc;
@@ -94,7 +94,7 @@ assert nativePrefix == bintools.nativePrefix;
 
 stdenv.mkDerivation {
   name = targetPrefix
-    + (if name != "" then name else stdenv.lib.removePrefix targetPrefix "${ccName}-wrapper")
+    + (if name != "" then name else "${ccName}-wrapper")
     + (stdenv.lib.optionalString (cc != null && ccVersion != "") "-${ccVersion}");
 
   preferLocalBuild = true;
diff --git a/pkgs/build-support/setup-hooks/set-java-classpath.sh b/pkgs/build-support/setup-hooks/set-java-classpath.sh
index 5d3548dc2e88..445fa56d61de 100644
--- a/pkgs/build-support/setup-hooks/set-java-classpath.sh
+++ b/pkgs/build-support/setup-hooks/set-java-classpath.sh
@@ -6,7 +6,7 @@ export CLASSPATH
 addPkgToClassPath () {
     local jar
     for jar in $1/share/java/*.jar; do
-        export CLASSPATH=''${CLASSPATH}''${CLASSPATH:+:}''${jar}
+        export CLASSPATH=''${CLASSPATH-}''${CLASSPATH:+:}''${jar}
     done
 }