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IDProjectCategoryView StatusDate SubmittedLast Update
0014716CMakeCMakeSetuppublic2014-01-22 08:302016-05-02 08:30
Reporteriljau 
Assigned ToBrad King 
PrioritynormalSeverityminorReproducibilitysometimes
StatusclosedResolutionfixed 
PlatformOSWindowsOS Version7
Product VersionCMake 2.8.12.1 
Target VersionCMake 3.5Fixed in VersionCMake 3.5 
Summary0014716: CMake installer can't modify %PATH% if it's 'loo long'.
DescriptionCMake windows installer fails to add installation directory to %PATH% if contents of %PATH% environment variable are above some hardcoded limit.
Steps To Reproduce1. Fill your user %PATH% environment variable with something long (in my case 466 characters).
2. Run installer.
3. Select "Add CMake to the system PATH for current user" in the installer.
4. Click "Next >"
5. After installing cmake, following window pops up:
   "Warning! PATH too long installer unable to modify PATH!"
TagsNo tags attached.
Attached Filespng file icon cmake-path.png [^] (305,171 bytes) 2015-04-07 12:41

 Relationships
related to 0010257closedBill Hoffman Installer erasing windows PATH 
related to 0015635closedKitware Robot CPACK_NSIS_MODIFY_PATH has no affect on PATH variable 

  Notes
(0035031)
Brad King (manager)
2014-02-03 16:07

 For reference, the current "PATH too long" messages comes from this change:

 Fix for bug 10257, NSIS could remove a PATH if it was too long
 http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=0619813e [^]

meant to fix issue 0010257.
(0037768)
Marek R (reporter)
2015-01-22 04:51

 Confirming issue on Windows 7 64x with cmake-3.1.0-winn32-x86.exe installer.
My path was 1232 character long (before change).
(0038466)
Chris G (reporter)
2015-04-07 12:41
edited on: 2015-04-07 12:45

 This error is reproducable on my system which has the Path variable containing only ONE entry for %DEVPATH% which contains my previous path.

My path is NINE characters in length yet I still receive the path too long error whether I choose to add CMake to the local user path or the system path from the installer.

Echoing %PATH% returns all the paths references in %DEVPATH% yet the entry itself only contains the NINE characters of "%DEVPATH%". This may be the cause of the bug depending on how the installer tests for %PATH%'s length.

I have attached a screenshot to display what I mean just in case the above isn't completely clear.

Edit: My %DEVPATH% variable is 1445 characters in length.
(0038542)
imphead (reporter)
2015-04-19 11:22

 Could you escalate this please? Still happens in 3.2.2.
(0038544)
Brad King (manager)
2015-04-20 08:41

 AFAIK the limit is in NSIS, not CMake. The behavior reported in this issue is intentional as according to the change linked in 0014716:0035031. The warning is better than silently breaking the existing PATH.
(0040143)
jaykrell (reporter)
2016-01-05 15:15

 I hit this too.

---------------------------
CMake 3.4.1 Setup
---------------------------
Warning! PATH too long installer unable to modify PATH!
---------------------------
OK
---------------------------


C:\Users\jaykrell>path
PATH=C:\Program Files (x86)\ActiveState Komodo Edit 9\;C:\Python27\;C:\Python27\
Scripts;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Cl
ient\;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Fil
es (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windo
ws;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Progr
am Files (x86)\Common Files\Roxio Shared\DLLShared\;C:\Program Files (x86)\Commo
n Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Sh
ared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\12.0\DL
LShared\;C:\Program Files (x86)\Roxio\OEM\AudioCore\;C:\Program Files (x86)\Wind
ows Live\Shared;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL
;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Fil
es (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\
Intel\Intel(R) Management Engine Components\IPT;C:\CodeWarrior\7.0\Bin;C:\CodeWa
rrior\7.0\Other Metrowerks Tools\Command Line Tools;C:\CodeWarrior\7.0\Win32-x86
 Support\Libraries\Runtime\Libs\MSL_All-DLLs;C:\Windows\system32\config\systempr
ofile\.dnx\bin;C:\Program Files\Microsoft DNX\Dnvm\;C:\Program Files\Microsoft S
QL Server\120\Tools\Binn\;C:\Program Files (x86)\nodejs\;C:\Program Files (x86)\
Windows Kits\10\Windows Performance Toolkit\;C:\Program Files\IDM Computer Solut
ions\UltraEdit;C:\Users\jaykrell\.dnx\bin;C:\cm3\bin;C:\Users\jaykrell\AppData\R
oaming\npm
(0040146)
Brad King (manager)
2016-01-07 13:36

 This is an issue with NSIS itself.

We've switched to using the WiX generator to produce a .msi installer instead:

 Utilities/Release: Switch to .msi builder for Windows binary
 https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=083312a8 [^]

This avoids the issue altogether.
(0040993)
Robert Maynard (manager)
2016-05-02 08:30

 Closing resolved issues that have not been updated in more than 4 months.

 Issue History
Date Modified Username Field Change
2014-01-22 08:30 iljau New Issue
2014-02-03 16:05 Brad King Relationship added related to 0010257
2014-02-03 16:07 Brad King Note Added: 0035031
2015-01-22 04:51 Marek R Note Added: 0037768
2015-04-07 12:41 Chris G File Added: cmake-path.png
2015-04-07 12:41 Chris G Note Added: 0038466
2015-04-07 12:45 Chris G Note Edited: 0038466
2015-04-19 11:22 imphead Note Added: 0038542
2015-04-20 08:41 Brad King Note Added: 0038544
2015-06-29 13:19 David Cole Relationship added related to 0015635
2016-01-05 15:15 jaykrell Note Added: 0040143
2016-01-07 13:36 Brad King Note Added: 0040146
2016-01-07 13:36 Brad King Assigned To => Brad King
2016-01-07 13:36 Brad King Status new => resolved
2016-01-07 13:36 Brad King Resolution open => fixed
2016-01-07 13:36 Brad King Fixed in Version => CMake 3.5
2016-01-07 13:36 Brad King Target Version => CMake 3.5
2016-05-02 08:30 Robert Maynard Note Added: 0040993
2016-05-02 08:30 Robert Maynard Status resolved => closed

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