Add target to run tests incremental

Avoid the configure step each time during development.

1 files changed, 4 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 6d5b004..1d92d2d 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,10 @@ linked-clone:
         cp -r $$SRCDIR/tests .
         @echo -e "==> DONE. <==\nCompile a debug build with\n  make compile_debug SRC=src-$(CLONE)"
 
-tests: release  ## compile a release build and run the testsuite
+tests: release tests-incremental  ## compile a release build and run the testsuite
+
+tests-incremental:  ## perform an incremental build and run the testsuite
+        make -C $(SRC)
         TEST_PHP_ARGS='-q' REPORT_EXIT_STATUS=1 SP_SKIP_OLD_PHP_CHECK=1 make -C $(SRC) test
 
 coverage:  ## compile snuffleugpaus, and run the testsuite with coverage