From 2b7e434f7327b7fdda72950e27f8fc0a27de2547 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-S=C3=A9bastien=20P=C3=A9dron?=
 <jean-sebastien.pedron@dumbbell.fr>
Date: Tue, 25 Jun 2019 14:18:43 +0200
Subject: Accept a list of deps to forcibly rebuild in `$(FORCE_REBUILD)`

... in addition to the `$(force_rebuild_dep)` function.

It's easier for the common use case than specify a function.
---
 core/deps.mk | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'core/deps.mk')

diff --git a/core/deps.mk b/core/deps.mk
index 4146cc0..8c5543a 100644
--- a/core/deps.mk
+++ b/core/deps.mk
@@ -120,6 +120,25 @@ ifeq ($(IS_APP)$(IS_DEP),)
 	$(verbose) rm -f $(ERLANG_MK_TMP)/apps.log $(ERLANG_MK_TMP)/deps.log
 endif
 
+# Erlang.mk does not rebuild dependencies after they were compiled
+# once. If a developer is working on the top-level project and some
+# dependencies at the same time, he may want to change this behavior.
+# There are two solutions:
+#     1. Set `FULL=1` so that all dependencies are visited and
+#        recursively recompiled if necessary.
+#     2. Set `FORCE_REBUILD=` to the specific list of dependencies that
+#        should be recompiled (instead of the whole set).
+
+FORCE_REBUILD ?=
+
+ifeq ($(origin FULL),undefined)
+ifneq ($(strip $(force_rebuild_dep)$(FORCE_REBUILD)),)
+define force_rebuild_dep
+echo "$(FORCE_REBUILD)" | grep -qw "$$(basename "$1")"
+endef
+endif
+endif
+
 ifneq ($(SKIP_DEPS),)
 deps::
 else
-- 
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