From c13f72ee0a6600963a10e57155d2e814d56599e2 Mon Sep 17 00:00:00 2001
From: Marco Hinz <mh.codebro@gmail.com>
Date: Sat, 8 Oct 2016 02:23:51 +0200
Subject: [PATCH] Makefile: add PREFIX variable

We use a Makefile which in turn uses cmake. If we wanted to set the install
prefix for cmake, we had to do this so far:

  make CMAKE_FLAGS="-DCMAKE_INSTALL_PREFIX=/tmp/nvim"

That's long and hard to remember. Following the conventions of other Makefiles,
this now works as well and is equivalent:

  make PREFIX=/tmp/nvim
---
 Makefile                 | 4 ++++
 contrib/local.mk.example | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 8fdf007260..ef4b9cdcb5 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,10 @@ CLINT_ERRORS_FILE_PATH := /reports/clint/errors.json
 BUILD_TYPE ?= $(shell (type ninja > /dev/null 2>&1 && echo "Ninja") || \
     echo "Unix Makefiles")
 
+ifneq (,$(PREFIX))
+  CMAKE_FLAGS += -DCMAKE_INSTALL_PREFIX:PATH="$(PREFIX)"
+endif
+
 ifeq (,$(BUILD_TOOL))
   ifeq (Ninja,$(BUILD_TYPE))
     ifneq ($(shell cmake --help 2>/dev/null | grep Ninja),)
diff --git a/contrib/local.mk.example b/contrib/local.mk.example
index a0b2d034e1..6959107ea2 100644
--- a/contrib/local.mk.example
+++ b/contrib/local.mk.example
@@ -2,7 +2,7 @@
 # Individual entries must be uncommented to take effect.
 
 # By default, the installation prefix is '/usr/local'.
-# CMAKE_EXTRA_FLAGS += -DCMAKE_INSTALL_PREFIX=/usr/local/nvim-latest
+# PREFIX := /usr/local/nvim-latest
 
 # These CFLAGS can be used in addition to those specified in CMakeLists.txt:
 # CMAKE_EXTRA_FLAGS="-DCMAKE_C_FLAGS=-ftrapv -Wlogical-op"