From 8f98ab238866b10c2f522288febb617fcb1755fb Mon Sep 17 00:00:00 2001
From: Luciano Iam <lucianito@gmail.com>
Date: Mon, 18 Jan 2021 12:20:14 +0100
Subject: [PATCH] Allow building projects outside the examples dir

Project Makefiles can now define a DPF_CUSTOM_PATH

When setting a DPF_CUSTOM_PATH also DPF_CUSTOM_TARGET_DIR (for binaries) and
DPF_CUSTOM_BUILD_DIR (objects) need to be set.

If the project depends on DPF's graphic library, it has to be built first by
cd'ing to DPF and running make dgl
---
 Makefile.plugins.mk | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Makefile.plugins.mk b/Makefile.plugins.mk
index cc7cade5..5cd9be1f 100644
--- a/Makefile.plugins.mk
+++ b/Makefile.plugins.mk
@@ -7,19 +7,36 @@
 # NOTE: NAME, FILES_DSP and FILES_UI must have been defined before including this file!
 
 
+ifeq ($(DPF_CUSTOM_PATH),)
 ifeq (,$(wildcard ../../Makefile.base.mk))
 DPF_PATH=../../dpf
 else
 DPF_PATH=../..
 endif
+else
+DPF_PATH = $(DPF_CUSTOM_PATH)
+endif
 
 include $(DPF_PATH)/Makefile.base.mk
 
 # ---------------------------------------------------------------------------------------------------------------------
 # Basic setup
 
+ifeq ($(DPF_CUSTOM_PATH),)
 TARGET_DIR = ../../bin
 BUILD_DIR = ../../build/$(NAME)
+else
+ifeq ($(DPF_CUSTOM_TARGET_DIR),)
+$(error DPF_CUSTOM_TARGET_DIR is not set)
+else
+TARGET_DIR = $(DPF_CUSTOM_TARGET_DIR)
+endif
+ifeq ($(DPF_CUSTOM_BUILD_DIR),)
+$(error DPF_CUSTOM_BUILD_DIR is not set)
+else
+BUILD_DIR = $(DPF_CUSTOM_BUILD_DIR)
+endif
+endif
 
 BUILD_C_FLAGS   += -I.
 BUILD_CXX_FLAGS += -I. -I$(DPF_PATH)/distrho -I$(DPF_PATH)/dgl