Makefile make的编译器行为异常

关于makefile有一个非常奇怪的问题，请让我描述一下：

我的项目中有两个文件，一个文件是makefile，其中makefile的内容如下：

context::
    @echo "hello makefile"

all:
    echo "hello makefile.out"

############################################################################
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.  The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################/


context::
    @echo "hello makefile"

另一个是makefile.out，该makefile.out文件的内容如下：

context::
    @echo "hello makefile"

all:
    echo "hello makefile.out"

############################################################################
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.  The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################/


context::
    @echo "hello makefile"

当我要编译我的项目时，我将使用

make-f makefile.out

替换

make

操作，因为我想调用makefile.out文件，但奇怪的是，当我执行

make-f makefile.out

时，我会在控制台上看到这样的操作：

cp Makefile Makefile.out
hello makefile

然后我的makefile.out文件被修改如下：

context::
    @echo "hello makefile"

all:
    echo "hello makefile.out"

############################################################################
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.  The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################/


context::
    @echo "hello makefile"

正如你所看到的，这个结果不是我想要的，但我不知道为什么会出现这个问题

---

我不知道是否有人在我身上遇到过类似的问题。如果是这样，您能告诉我解决方案代码吗？

我知道为什么会发生这种情况

首先，GNU make有一个内置规则，显示如何从

%

文件中构建

%

文件<代码>制作-p将显示：

%.out: %
#  recipe to execute (built-in):
        @rm -f $@
         cp $< $@

第三，您可以通过将以下内容添加到makefile中来删除该默认规则：

%.out: %

（没有其他先决条件，没有配方）。看

第四，您可以通过向

MAKEFLAGS

添加

-r

选项来删除所有内置模式规则；将其添加到makefile中，如下所示：

MAKEFLAGS += -r

---

注意：此解决方案需要GNU make 4.0或更高版本。

您使用的make版本是什么？（请尝试

make-v

）您确定正在从包含您描述的文件的目录中运行

make

？我不会用GNU make 4.0复制这一点。我不准备相信任何一致的

make

实现在使用一个makefile时会表现出所描述的行为，该makefile的完整内容如问题中对两个makefile的描述。感谢您的快速回复，它完美地解决了我的问题。