Used standard DESTDIR variable in make install

diff --git a/Makefile b/Makefile
index 22b954a..902a238 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -25,10 +25,12 @@ ifeq ($(origin SUB_VERSION), undefined)
        endif
 endif
 
+# for backward compatibility
+DESTDIR := $(INSTALL_DIR)
 
 # Configurable variables for installation (default /usr/local/...)
-ifeq ($(origin INSTALL_DIR), undefined)
-       INSTALL_DIR := /usr/local/bin
+ifeq ($(origin DESTDIR), undefined)
+       DESTDIR := /usr/local/bin
 endif
 
 HOST_GOOS=$(shell go env GOOS)
@@ -117,7 +119,7 @@ distclean: clean
 
 .PHONY: install
 install: all
-       mkdir -p $(INSTALL_DIR) && cp $(LOCAL_BINDIR)/* $(INSTALL_DIR)
+       mkdir -p $(DESTDIR) && cp $(LOCAL_BINDIR)/* $(DESTDIR)
 
 vendor: tools/glide glide.yaml
        ./tools/glide install --strip-vendor

diff --git a/README.md b/README.md
index 4249251..06d0725 100644 (file)
--- a/README.md
+++ b/README.md
@@ -30,12 +30,19 @@ Clone this repo into your `$GOPATH/src/github.com/iotbzh` and use delivered Make
  make all
 ```
 
-And to install xds-agent in /usr/local/bin:
+And to install xds-agent (by default in `/usr/local/bin`):
 ```bash
 make install
 ```
 
-> **NOTE**: To cross build for example for Windows, just execute:
+>**NOTE:** Used `DESTDIR` to specify another install directory
+>```bash
+>make install DESTDIR=$HOME/opt/xds-agent
+>```
+
+
+#### Cross build
+For example on a Linux machine to cross-build for Windows, just execute:
 ```bash
 export GOOS=windows
 export GOARCH=amd64