I have a problem with a Qt project that specifies install commands. My build toolkit is a standard, recent MinGW installation, external to Qt 4.6. The install part of the build fails with this message:
zsh: command not found: mkdir
Which is weird since I can't find any zsh executable on my system.

I got exactly the same result from running "make install" from the MS shell in the build directory, which is also weird as it is not supposed to know about make. But it did, because some old install of Hugin had put a dir containing gnu make on PATH (but that dir has no zsh.exe either). I removed that dir from PATH.

However, the build continues to fail when run from Qt Creator, but works fine if I run "make install" from the Msys shell.

I _think_ this project worked with a previous installation of Qt -- 4.4 or 4.5.

Any insights?

And can anyone point me at documentation of how Qt Creator decides what shell to run, and how it sets that shell's environment?

Thanks, Tom