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-rw-r--r--pkgs/build-support/cc-wrapper/cc-wrapper.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/build-support/cc-wrapper/cc-wrapper.sh b/pkgs/build-support/cc-wrapper/cc-wrapper.sh
index 548b19106457..e374e1656a47 100644
--- a/pkgs/build-support/cc-wrapper/cc-wrapper.sh
+++ b/pkgs/build-support/cc-wrapper/cc-wrapper.sh
@@ -80,8 +80,8 @@ if [ "$NIX_ENFORCE_PURITY" = 1 -a -n "$NIX_STORE" ]; then
 fi
 
 if [[ "@prog@" = *++ ]]; then
-    if  echo "$@" | grep -qvw -- -nostdlib; then
-        NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE $NIX_CXXSTDLIB_COMPILE"
+    if  echo "$@" | grep -qv -- -nostdlib; then
+        NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE ${NIX_CXXSTDLIB_COMPILE-@default_cxx_stdlib_compile@}"
         NIX_CFLAGS_LINK="$NIX_CFLAGS_LINK $NIX_CXXSTDLIB_LINK"
     fi
 fi