为ifeq出错:意外令牌附近的语法错误 [英] Make error for ifeq: syntax error near unexpected token

问题描述

我正在编写一个Makefile，该文件在一个位置进行字符串匹配，代码如下:

I'm writing a Makefile that does string matching at one place, the code is like:

if test ...; \
    then \
    shell scripts... \
fi

ifeq ($(DIST_TYPE),nightly)
    shell scripts ...
endif

第一个if是shell脚本，第二个ifeq是GNU Make的条件脚本.但是，会产生以下错误:

Here the first if is shell script, the second ifeq is GNU Make's conditional. However the following error generates:

ifeq(每晚，每晚)

ifeq (nightly,nightly)

/bin/sh:-c:第0行:语法标记为每晚，每晚"的意外错误附近

/bin/sh: -c: line 0: syntax error near unexpected token `nightly,nightly'

/bin/sh:-c:第0行:"ifeq(每晚，每晚)"

/bin/sh: -c: line 0: `ifeq (nightly,nightly)'

这是怎么回事?似乎Make正在尝试调用Shell.

What's happening here? It seems that Make is trying to call the shell.

谢谢.

推荐答案

我在代码旁玩耍，发现条件语句应该不缩进地编写，这解决了我的问题.

I played around the code and found that the conditional statements should be written without indentation, and this solved my problem.

如果没有缩进，Make会将其视为自身的指令；否则，它将被视为shell脚本.

If there is no indentation, Make will treat it as a directive for itself; otherwise, it's regarded as a shell script.

错误:

target:
    ifeq (foo, bar)
        ...
    endif

正确:

target:
ifeq (foo, bar)
    ...
endif

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