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-rw-r--r--pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh b/pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh
index 66e24fe5877..86c241cd0f5 100644
--- a/pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh
+++ b/pkgs/os-specific/darwin/apple-sdk/cf-setup-hook.sh
@@ -1,5 +1,5 @@
 linkSystemCoreFoundationFramework() {
-  NIX_CFLAGS_COMPILE="-F@out@/Library/Frameworks $NIX_CFLAGS_COMPILE"
+  NIX_CFLAGS_COMPILE="-F@out@/Library/Frameworks${NIX_CFLAGS_COMPILE:+ }${NIX_CFLAGS_COMPILE-}"
   # gross! many symbols (such as _OBJC_CLASS_$_NSArray) are defined in system CF, but not
   # in the opensource release
   # if the package needs private headers, we assume they also want to link with system CF