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Make target not working: Cannot run program "mymake": Launching failed [message #228846]

Fri, 16 January 2009 22:41

San

Messages: 11
Registered: July 2009

Junior Member

Hi all,

I have Eclipse in Windows, with the Cygwin toolchain.

I have a script that I use to build (named mymake), instead of make (my
script handles some variables and it invokes make). When I run the script
from a (Cygwin) bash prompt, it works fine. The directory where the script
is located is in the PATH.

In Eclipse, I created a make target for that project, which I attempt to
use for building. I have tried several things on "Build command" line,
listed below with the corresponding output:

1- which make

-----

**** Build of configuration Cygwin GCC for project multfem ****

which make
/usr/bin/make

2- make

-----

**** Build of configuration Cygwin GCC for project multfem ****

make
make: *** No targets specified and no makefile found. Stop.

Note: this means that it is finding and executing make, i.e., behaving as
expected

3- which mymake

-----

**** Build of configuration Cygwin GCC for project multfem ****

which mymake
/cygdrive/d/Appls/make/mymake

4- mymake

-----

**** Build of configuration Cygwin GCC for project multfem ****

(Cannot run program "mymake": Launching failed)

Does anyone know why, if my script is in the PATH (as found by which
mymake) it cannot be run? It has the right permissions. To test a little
more, I had copied it in the same directory as make, and then I did

chmod --reference=make mymake
chown --reference=make mymake
chgrp --reference=make mymake

with the same result. I had previously renamed the original mymake to be
sure that the script being found in the PATH was the one located in
/usr/bin.

What makes mymake different from make, given that make can be run and
mymake not?

I went nuts about this!!

Thanks

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Re: Make target not working: Cannot run program "mymake": Launching failed [message #228854 is a reply to message #228846]

Sat, 17 January 2009 03:39

Andrew Gvozdev

Messages: 257
Registered: July 2009

Senior Member

San wrote:

> Hi all,

> I have Eclipse in Windows, with the Cygwin toolchain.

> I have a script that I use to build (named mymake), instead of make (my
> script handles some variables and it invokes make). When I run the script
> from a (Cygwin) bash prompt, it works fine. The directory where the script
> is located is in the PATH.

...
> **** Build of configuration Cygwin GCC for project multfem ****
> (Cannot run program "mymake": Launching failed)
...

> What makes mymake different from make, given that make can be run and
> mymake not?

> I went nuts about this!!

Don't go nuts yet, you'll be fine. The difference is that you run your
script from bash shell but eclipse is not. Try this way:

bash -c mymake

Andrew

> Thanks

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Re: Make target not working: Cannot run program "mymake": Launching failed [message #228878 is a reply to message #228854]

Sat, 17 January 2009 13:29

San

Messages: 11
Registered: July 2009

Junior Member

Dear Andrew, it worked. But still, I do not understand why would 'make'
work and not 'mymake', when mymake was either in its original directory or
when it was in /usr/bin.

Thanks a lot!

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Re: Make target not working: Cannot run program "mymake": Launching failed [message #228886 is a reply to message #228878]

Sat, 17 January 2009 13:51

James Blackburn

Messages: 36
Registered: July 2009

Member

San wrote:
> Dear Andrew, it worked. But still, I do not understand why would 'make'
> work and not 'mymake', when mymake was either in its original directory
> or when it was in /usr/bin.

Does yourmake have #!/bin/bash at the top?

James

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Re: Make target not working: Cannot run program "mymake": Launching failed [message #228894 is a reply to message #228886]

Sat, 17 January 2009 16:32

Andrew Gvozdev

Messages: 257
Registered: July 2009

Senior Member

James Blackburn wrote:

> San wrote:
>> Dear Andrew, it worked. But still, I do not understand why would 'make'
>> work and not 'mymake', when mymake was either in its original directory
>> or when it was in /usr/bin.

mymake is a script which by definition is a set of commands for a shell.
Eclipse runs it as executable program. Try to run your script from Windows
Command Prompt - it won't run either. Eclipse is just a messenger here
using Win XP to execute programs.

> Does yourmake have #!/bin/bash at the top?
This is another instruction for a Unix shell. MS Windows won't honor that.

Andrew

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Re: Make target not working: Cannot run program "mymake": Launching failed [message #228901 is a reply to message #228894]

Sun, 18 January 2009 13:23

San

Messages: 11
Registered: July 2009

Junior Member

Andrew Gvozdev wrote:

> James Blackburn wrote:

>> San wrote:
>>> Dear Andrew, it worked. But still, I do not understand why would 'make'
>>> work and not 'mymake', when mymake was either in its original directory
>>> or when it was in /usr/bin.

> mymake is a script which by definition is a set of commands for a shell.
> Eclipse runs it as executable program. Try to run your script from Windows
> Command Prompt - it won't run either. Eclipse is just a messenger here
> using Win XP to execute programs.

>> Does yourmake have #!/bin/bash at the top?
> This is another instruction for a Unix shell. MS Windows won't honor that.

I think you are essentially right. From a DOS prompt, the 'make.exe' from
Cygwin can still run, but 'mymake' cannot. That is the difference.

Thanks a lot!

> Andrew

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