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Makefile (GNU make) > ifeq ($(.FEATURES),) > Special Variablesの一つ: .FEATURES

Last updated at Posted at 2018-06-23
動作環境
GeForce GTX 1070 (8GB)
ASRock Z170M Pro4S [Intel Z170chipset]
Ubuntu 16.04.4 LTS desktop amd64
TensorFlow v1.7.0
cuDNN v5.1 for Linux
CUDA v8.0
Python 3.5.2
IPython 6.0.0 -- An enhanced Interactive Python.
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu)
scipy v0.19.1
geopandas v0.3.0
MATLAB R2017b (Home Edition)
ADDA v.1.3b6
gnustep-gui-runtime v0.24.0-3.1
PyMieScatt v1.7.0

This article is related to ADDA (light scattering simulator based on the discrete dipole approximation).

下記はADDAのMakefileからの抜粋。

Makefile
ifeq ($(.FEATURES),)
  $(error GNU make version 3.81 or higher is required)
endif

.FEATURESというのはSpecial Variablesの一つのようだ。

上記の実装では、.FEATURESが空の時にGNU makeのバージョンが3.8未満と分かるようだ。

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