From 11c93a1e79e5a3401b8643b9234ccf21d9b74758 Mon Sep 17 00:00:00 2001
From: Duncaen <duncaen@voidlinux.org>
Date: Tue, 5 Jul 2022 17:13:37 +0200
Subject: [PATCH] common: correctly unset build_option_* variables

We can use the bash feature ${!prefix@}/${!prefix*} which expands to
all variables with the prefix.
This avoids leaking build_options between sourced templates.
---
 common/environment/setup/sourcepkg.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/environment/setup/sourcepkg.sh b/common/environment/setup/sourcepkg.sh
index 1191993c9ab..5b31f6c1f81 100644
--- a/common/environment/setup/sourcepkg.sh
+++ b/common/environment/setup/sourcepkg.sh
@@ -21,6 +21,9 @@ unset -v CFLAGS CXXFLAGS FFLAGS CPPFLAGS LDFLAGS LD_LIBRARY_PATH
 unset -v CC CXX CPP GCC LD AR AS RANLIB NM OBJDUMP OBJCOPY STRIP READELF PKG_CONFIG
 unset -v CMAKE_GENERATOR
 
+# unset all $build_option_ variables
+unset -v "${!build_option_@}"
+
 # hooks/do-extract/00-distfiles
 unset -v skip_extraction