# Build error - CTK CustomBuild failed

**URL:** <https://discourse.slicer.org/t/build-error-ctk-custombuild-failed/764>\
**Category:** Development\
**Created:** [July 25, 2017, 5:55pm UTC](https://discourse.slicer.org/t/build-error-ctk-custombuild-failed/764 "2017-07-25T17:55:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![JK\_Kim](https://avatars.discourse-cdn.com/v4/letter/j/b9bd4f/32.png) [@JK\_Kim](https://discourse.slicer.org/u/JK_Kim)\
**Post date:** [July 25, 2017, 5:55pm UTC](https://discourse.slicer.org/t/build-error-ctk-custombuild-failed/764/1 "2017-07-25T17:55:20Z")

</div>

I am following the instructions for building ([https://www.slicer.org/wiki/Documentation/Nightly/Developers/Build\_Instructions](https://www.slicer.org/wiki/Documentation/Nightly/Developers/Build_Instructions)) and getting the following four errors. I am on Window 7 using VS2013(update 4). Everything else works well other than these four errors. Can anyone help with this. This is my first Slicer build. Thank you~~  
JK

Error 1 error MSB6006: “cmd.exe” exited with code 1. [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK-build\Libs\Widgets\CTKWidgetsPythonQt.vcxproj] [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK.vcxproj] C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets 170 5 CTK  
Error 2 error MSB6006: “cmd.exe” exited with code 1. [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK-build\Libs\Widgets\CTKWidgetsPythonQt.vcxproj] [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK.vcxproj] C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets 170 5 CTK  
Error 3 error MSB6006: “cmd.exe” exited with code 1. [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK-build\Libs\Widgets\CTKWidgetsPythonQt.vcxproj] [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK.vcxproj] C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets 170 5 CTK  
Error 4 error MSB6006: “cmd.exe” exited with code 1. [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK-build\Libs\Widgets\CTKWidgetsPythonQt.vcxproj] [G:\Libs\slicer\Slicer\_072417\_64\CTK-build\CTK.vcxproj] C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets 170 5 CTK

\<CustomBuild  
Sources ="@(CustomBuild)“  
BuildSuffix =”$(\_BuildSuffix)"

```
  TrackerLogDirectory ="%(CustomBuild.TrackerLogDirectory)"
  MinimalRebuildFromTracking ="%(CustomBuild.MinimalRebuildFromTracking)"

  TLogReadFiles ="@(CustomBuildTLogReadFiles)"
  TLogWriteFiles ="@(CustomBuildTLogWriteFiles)"
  TrackFileAccess ="$(TrackFileAccess)"
  ToolArchitecture ="$(CustomBuildToolArchitecture)"
  TrackerFrameworkPath ="$(CustomBuildTrackerFrameworkPath)"
  TrackerSdkPath ="$(CustomBuildTrackerSdkPath)"

  AcceptableNonZeroExitCodes ="%(CustomBuild.AcceptableNonZeroExitCodes)"
  >
</CustomBuild>
```

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [July 25, 2017, 5:56pm UTC](https://discourse.slicer.org/t/build-error-ctk-custombuild-failed/764/2 "2017-07-25T17:56:34Z")

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Unfortunately, a change was introduced a few days ago that breaks debug-mode build on windows. See details here: [Slicer debug-mode buid error in 2017-07-23 version on Windows due to bzip2](https://discourse.slicer.org/t/slicer-debug-mode-buid-error-in-2017-07-23-version-on-windows-due-to-bzip2/751/5)

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<div class="post-metadata">

**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [July 25, 2017, 6:00pm UTC](https://discourse.slicer.org/t/build-error-ctk-custombuild-failed/764/3 "2017-07-25T18:00:07Z")

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> Re: Slicer debug-mode buid error in 2017-07-23 version on Windows due to bzip2 + CTK errors

This is being addressed. I will keep you posted.

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<div class="post-metadata">

**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [July 26, 2017, 2:06am UTC](https://discourse.slicer.org/t/build-error-ctk-custombuild-failed/764/4 "2017-07-26T02:06:06Z")

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@JK_Kim Please update the source and try to rebuild. This should be fixed in [26174](http://viewvc.slicer.org/viewvc.cgi/Slicer4?view=revision&revision=26174)