1# Copyright (C) 2010 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14# 15 16# Check that we have a Cygwin-compatible make. 17# 18# For some reason, a lot of application developers on Windows 19# have another GNU Make installed in their path, that fails 20# miserably with our build scripts. If we can detect this use 21# case, early, we will be able to dump a human-readable error 22# message with some help to fix the issue. 23# 24 25.PHONY: all 26all: 27 28# Get the cygwin-specific path to the make executable 29# (e.g. /cygdrive/c/cygwin/usr/bin/make), then strip the 30# .exe suffix, if any. 31# 32CYGWIN_MAKE := $(shell cygpath --unix --absolute $(firstword $(MAKE))) 33CYGWIN_MAKE := $(CYGWIN_MAKE:%.exe=%) 34 35# Now try to find it on the file system, a non-cygwin compatible 36# GNU Make, even if launched from a Cygwin shell, will not 37# 38SELF_MAKE := $(strip $(wildcard $(CYGWIN_MAKE).exe)) 39ifeq ($(SELF_MAKE),) 40 $(error Android NDK: $(firstword $(MAKE)) is not cygwin-compatible) 41endif 42 43# that's all 44