diff --git a/.gitignore b/.gitignore
index 059a49089..563afa687 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ mk/cc.flags.mk
 PYTHON_COMMAND
 test_completions.txt
 timing.txt
+test/common/build_config.sh
diff --git a/configure b/configure
index e5145a012..5709551ed 100755
--- a/configure
+++ b/configure
@@ -804,6 +804,11 @@ rm -f $rootdir/mk/cc.flags.mk
 [ -n "$DESTDIR" ] && echo "DESTDIR?=$DESTDIR" >> $rootdir/mk/cc.flags.mk
 echo "done."
 
+# Create .sh with build config for easy sourcing|lookup during the tests.
+for conf in "${!CONFIG[@]}"; do
+	echo "CONFIG_$conf=${CONFIG[$conf]}"
+done >"$rootdir/test/common/build_config.sh"
+
 if [[ $sys_name == "FreeBSD" ]]; then
 	echo "Type 'gmake' to build."
 else