MantisBT - CMake

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Project

Category

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Date Submitted

Last Update

0014023

CMake

public

2013-03-18 13:15

2013-11-04 09:33

Reporter

Andreas Mohr

Assigned To

Brad King

Priority

normal

Severity

minor

Reproducibility

always

Status

closed

Resolution

fixed

Platform

Windows

OS Version

Product Version

CMake 2.8.10.2

Target Version

CMake 2.8.12

Fixed in Version

CMake 2.8.12

Summary

0014023: cmake -E touch / touch_nocreate of a directory fails on Windows yet succeeds on Linux

Description

Touching a *file* returns success on both Windows and Linux, yet touching a *directory* succeeds on Linux (ext3) and fails on Windows 7 32bit (NTFS).
Of course I wouldn't be reporting it here if it weren't for the fact that I got a bloody nose from that ;)
(while trying to use these things in a build-time mechanism)

I'm not quite sure whether this really is something that should be made consistent in CMake's implementation, since it might simply be a difference in underlying filesystem mechanisms of the platforms.

IOW, I don't know whether CMake's system-side implementation contains a stupid mistake,
or whether it's simply that touch:ing a directory on Windows is supposed to do what it currently does.

Any ideas, hints?

Thanks!

Steps To Reproduce

cmake_minimum_required(VERSION 2.6)

project(test_touch_nocreate NONE)

set(touch_sample_1 "${CMAKE_BINARY_DIR}/mytestdir")
file(MAKE_DIRECTORY "${touch_sample_1}")

set(touch_sample_2 "${CMAKE_CURRENT_LIST_FILE}")

set(mytouch "${touch_sample_1}")
# This works:
#set(mytouch "${touch_sample_2}")

# Does not matter whether we choose touch or touch_nocreate.
set(touch_cmd_1 "touch")
set(touch_cmd_2 "touch_nocreate")

set(touch_cmd "${touch_cmd_1}")

execute_process(
COMMAND "${CMAKE_COMMAND}" -E ${touch_cmd} "${mytouch}"
RESULT_VARIABLE res
)
message("res is ${res}")

Additional Information