Re: [CMake] How to set environment variables with spaces in commands

[Qingping Hou]

On Thu, Dec 10, 2015 at 4:38 AM, Ruslan Baratov
 wrote:
> This makes writing ExternalProject_Add steps with modification of
> environment quite non-trivial task (at least doing it correctly). This
> feature definitely missing in CMake. I've mentioned it once already:
> https://cmake.org/pipermail/cmake-developers/2015-August/026053.html

Interesting, good to know that it's actually a missing feature instead
of me trying to do something dumb ;)

hunter is a pretty cool project! I will read through the code and see
how it works around this issue.
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Re: [CMake] How to set environment variables with spaces in commands

[Qingping Hou]

On Wed, Dec 9, 2015 at 9:52 PM, Attila Krasznahorkay
 wrote:
> Probably not the intended solution, but what I’m doing in such cases is that 
> in a patch step I create a shell script that does the configuration for me. 
> With all the environment settings and everything. Like:
>
> PATCH_COMMAND ${CMAKE_COMMAND} -E echo “cd someDir/; CC=\”something\” 
> ./configure” > configure.sh
> CONFIGURE_COMMAND sh configure.sh

Thanks Attila for the tip. In fact, since you are already constructing
the command as a string, why not just run it through sh?

CONFIGURE_COMMAND sh “cd someDir/; CC=\”something\” ./configure”
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[CMake] How to set environment variables with spaces in commands

[Qingping Hou]

Hi all,

I am trying to setup an ExternalProject in cmake but got stuck in the
configuration step. I am using ccache to speed up the compilation:

```
ExternalProject_Add(
  ...
  CONFIGURE_COMMAND CC="ccache arm-linux-gnueabihf-gcc" ./configure
  ...
)
```

However, when cmake generates the Makefile, it moves the quotes around
and breaks the command:

```
"CC=ccache arm-linux-gnueabihf-gcc" ./configure
```

I have tried various escaping method to try to get it work properly
without any luck. Is this a bug or an unintended feature?

Thanks,
QP
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