diff --git a/common/environment/configure/debug-debug-prefix-map.sh b/common/environment/configure/debug-debug-prefix-map.sh
index b2e187dd407..40b3a7b46bc 100644
--- a/common/environment/configure/debug-debug-prefix-map.sh
+++ b/common/environment/configure/debug-debug-prefix-map.sh
@@ -1,13 +1,16 @@
+local _wrksrc="$wrksrc${build_wrksrc:+/$build_wrksrc}"
 case "$build_style" in
 cmake)
-	CFLAGS="${CFLAGS} -fdebug-prefix-map=$wrksrc/${cmake_builddir:-build}=."
-	CXXFLAGS="${CXXFLAGS} -fdebug-prefix-map=$wrksrc/${cmake_builddir:-build}=."
+	CFLAGS="${CFLAGS} -fdebug-prefix-map=$_wrksrc/${cmake_builddir:-build}=."
+	CXXFLAGS="${CXXFLAGS} -fdebug-prefix-map=$_wrksrc/${cmake_builddir:-build}=."
 	;;
 meson)
-	CFLAGS="${CFLAGS} -fdebug-prefix-map=$wrksrc/${meson_builddir:-build}=."
-	CXXFLAGS="${CXXFLAGS} -fdebug-prefix-map=$wrksrc/${meson_builddir:-build}=."
+	CFLAGS="${CFLAGS} -fdebug-prefix-map=$_wrksrc/${meson_builddir:-build}=."
+	CXXFLAGS="${CXXFLAGS} -fdebug-prefix-map=$_wrksrc/${meson_builddir:-build}=."
 	;;
 *)
-	CFLAGS="${CFLAGS} -fdebug-prefix-map=$wrksrc=."
-	CXXFLAGS="${CXXFLAGS} -fdebug-prefix-map=$wrksrc=."
+	CFLAGS="${CFLAGS} -fdebug-prefix-map=$_wrksrc=."
+	CXXFLAGS="${CXXFLAGS} -fdebug-prefix-map=$_wrksrc=."
 esac
+
+unset _wrksrc