diff --git a/pkgs/build-support/bintools-wrapper/setup-hook.sh b/pkgs/build-support/bintools-wrapper/setup-hook.sh
index f65b792485a..2cf606cce7c 100644
--- a/pkgs/build-support/bintools-wrapper/setup-hook.sh
+++ b/pkgs/build-support/bintools-wrapper/setup-hook.sh
@@ -59,11 +59,11 @@ for cmd in \
     ar as ld nm objcopy objdump readelf ranlib strip strings size windres
 do
     if
-        PATH=$_PATH type -p "@targetPrefix@${cmd}" > /dev/null
+        cmd_path=$(PATH=$_PATH command -v "@targetPrefix@${cmd}")
     then
         upper_case="$(echo "$cmd" | tr "[:lower:]" "[:upper:]")"
-        export "${role_pre}${upper_case}=@targetPrefix@${cmd}";
-        export "${upper_case}${role_post}=@targetPrefix@${cmd}";
+        export "${role_pre}${upper_case}=${cmd_path}";
+        export "${upper_case}${role_post}=${cmd_path}";
     fi
 done
 
@@ -72,5 +72,5 @@ done
 export NIX_HARDENING_ENABLE
 
 # No local scope in sourced file
-unset -v role_pre role_post cmd upper_case
+unset -v role_pre role_post cmd cmd_path upper_case
 set +u
diff --git a/pkgs/build-support/cc-wrapper/setup-hook.sh b/pkgs/build-support/cc-wrapper/setup-hook.sh
index 28060de7411..619e75a3974 100644
--- a/pkgs/build-support/cc-wrapper/setup-hook.sh
+++ b/pkgs/build-support/cc-wrapper/setup-hook.sh
@@ -109,10 +109,10 @@ fi
 
 export NIX_${role_pre}CC=@out@
 
-export ${role_pre}CC=@named_cc@
-export ${role_pre}CXX=@named_cxx@
-export CC${role_post}=@named_cc@
-export CXX${role_post}=@named_cxx@
+export ${role_pre}CC=@out@/bin/@named_cc@
+export ${role_pre}CXX=@out@/bin/@named_cxx@
+export CC${role_post}=@out@/bin/@named_cc@
+export CXX${role_post}=@out@/bin/@named_cxx@
 
 # If unset, assume the default hardening flags.
 : ${NIX_HARDENING_ENABLE="fortify stackprotector pic strictoverflow format relro bindnow"}
diff --git a/pkgs/development/compilers/ghc/8.0.2.nix b/pkgs/development/compilers/ghc/8.0.2.nix
index ddd9c27589a..fdbe4cf902f 100644
--- a/pkgs/development/compilers/ghc/8.0.2.nix
+++ b/pkgs/development/compilers/ghc/8.0.2.nix
@@ -102,15 +102,16 @@ stdenv.mkDerivation rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
-    export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
+    # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
+    export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/8.2.2.nix b/pkgs/development/compilers/ghc/8.2.2.nix
index 79c910e5fd2..6ff1a248372 100644
--- a/pkgs/development/compilers/ghc/8.2.2.nix
+++ b/pkgs/development/compilers/ghc/8.2.2.nix
@@ -134,16 +134,16 @@ stdenv.mkDerivation rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/8.4.3.nix b/pkgs/development/compilers/ghc/8.4.3.nix
index 3f1f539cab7..923b5b6647b 100644
--- a/pkgs/development/compilers/ghc/8.4.3.nix
+++ b/pkgs/development/compilers/ghc/8.4.3.nix
@@ -114,16 +114,16 @@ stdenv.mkDerivation (rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/8.6.1.nix b/pkgs/development/compilers/ghc/8.6.1.nix
index fdb60ce3f2e..a94c9e3d3f1 100644
--- a/pkgs/development/compilers/ghc/8.6.1.nix
+++ b/pkgs/development/compilers/ghc/8.6.1.nix
@@ -98,16 +98,16 @@ stdenv.mkDerivation (rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index 2824ce669ee..b0b6ed3bab0 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -100,16 +100,16 @@ stdenv.mkDerivation rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     echo ${version} >VERSION
diff --git a/pkgs/development/libraries/gcc/libgcc/default.nix b/pkgs/development/libraries/gcc/libgcc/default.nix
index 0a29ab6927f..ef605d8702f 100644
--- a/pkgs/development/libraries/gcc/libgcc/default.nix
+++ b/pkgs/development/libraries/gcc/libgcc/default.nix
@@ -46,22 +46,16 @@ stdenvNoLibs.mkDerivation rec {
     mkdir -p "$buildRoot/gcc"
     cd "$buildRoot/gcc"
     (
-      export AS_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$AS_FOR_BUILD
-      export CC_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CC_FOR_BUILD
-      export CPP_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CPP_FOR_BUILD
-      export CXX_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CXX_FOR_BUILD
-      export LD_FOR_BUILD=${buildPackages.stdenv.cc.bintools}/bin/$LD_FOR_BUILD
-
       export AS=$AS_FOR_BUILD
       export CC=$CC_FOR_BUILD
       export CPP=$CPP_FOR_BUILD
       export CXX=$CXX_FOR_BUILD
       export LD=$LD_FOR_BUILD
 
-      export AS_FOR_TARGET=${stdenvNoLibs.cc}/bin/$AS
-      export CC_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CC
-      export CPP_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CPP
-      export LD_FOR_TARGET=${stdenvNoLibs.cc.bintools}/bin/$LD
+      export AS_FOR_TARGET=$AS
+      export CC_FOR_TARGET=$CC
+      export CPP_FOR_TARGET=$CPP
+      export LD_FOR_TARGET=$LD
 
       export NIX_BUILD_CFLAGS_COMPILE+=' -DGENERATOR_FILE=1'
 
@@ -87,23 +81,6 @@ stdenvNoLibs.mkDerivation rec {
     cd "$buildRoot/gcc/${hostPlatform.config}/libgcc"
     configureScript=$sourceRoot/configure
     chmod +x "$configureScript"
-
-    export AS_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$AS_FOR_BUILD
-    export CC_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CC_FOR_BUILD
-    export CPP_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CPP_FOR_BUILD
-    export CXX_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CXX_FOR_BUILD
-    export LD_FOR_BUILD=${buildPackages.stdenv.cc.bintools}/bin/$LD_FOR_BUILD
-
-    export AS=${stdenvNoLibs.cc}/bin/$AS
-    export CC=${stdenvNoLibs.cc}/bin/$CC
-    export CPP=${stdenvNoLibs.cc}/bin/$CPP
-    export CXX=${stdenvNoLibs.cc}/bin/$CXX
-    export LD=${stdenvNoLibs.cc.bintools}/bin/$LD
-
-    export AS_FOR_TARGET=${stdenvNoLibs.cc}/bin/$AS_FOR_TARGET
-    export CC_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CC_FOR_TARGET
-    export CPP_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CPP_FOR_TARGET
-    export LD_FOR_TARGET=${stdenvNoLibs.cc.bintools}/bin/$LD_FOR_TARGET
   '';
 
   gccConfigureFlags = [