MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0015193CMakeCMakepublic2014-10-03 09:012016-06-10 14:31
ReporterYichao Yu 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
Platformx86_64OSLinuxOS VersionArch Linux
Product VersionCMake 3.0.2 
Target VersionFixed in Version 
Summary0015193: Error when one of the parent directory is a symlink to it's parent directory
DescriptionIf one of the parent directory of the source directory is a symlink to one of its parent directory, cmake fails at configure time on add_subdirectory.

Directory structure to reproduce this:
```
% tree
.
├── 1
│   ├── 2
│   │   └── cmake
│   │   ├── a
│   │   │   └── CMakeLists.txt
│   │   └── CMakeLists.txt
│   └── 4 -> .
└── 3 -> 1

6 directories, 2 files
```

The higher level `CMakeLists.txt` is
```
% cat 1/2/cmake/CMakeLists.txt
project(cmake-test)
cmake_minimum_required(VERSION 2.8)
add_subdirectory(a)
```

and the lower level `CMakeLists.txt` is empty.

When trying to build in `1/4/2/cmake/build`
```
% cmake ..
-- The C compiler identification is GNU 4.9.1
-- The CXX compiler identification is GNU 4.9.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
CMake Error at CMakeLists.txt:3 (add_subdirectory):
  add_subdirectory not given a binary directory but the given source
  directory "/home/yuyichao/tmp/cmake-test/1/4/4/4/2/cmake/a" is not a
  subdirectory of "/home/yuyichao/tmp/cmake-test/1/4/4/2/cmake". When
  specifying an out-of-tree source a binary directory must be explicitly
  specified.


-- Configuring incomplete, errors occurred!
See also "/home/yuyichao/tmp/cmake-test/1/4/2/cmake/build/CMakeFiles/CMakeOutput.log".
```

Another real life example can be found in the comment here[1] and the qtcurve issue here[2].

[1] http://kde-look.org/content/show.php?content=40492 [^]
[2] https://github.com/QtCurve/qtcurve/issues/77 [^]
Steps To Reproduce
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Issue History
Date ModifiedUsernameFieldChange
2014-10-03 09:01Yichao YuNew Issue
2016-05-07 05:34Michal WirthNote Added: 0041035
2016-06-10 14:29Kitware RobotNote Added: 0042642
2016-06-10 14:29Kitware RobotStatusnew => resolved
2016-06-10 14:29Kitware RobotResolutionopen => moved
2016-06-10 14:29Kitware RobotAssigned To => Kitware Robot
2016-06-10 14:31Kitware RobotStatusresolved => closed

Notes
(0041035)
Michal Wirth   
2016-05-07 05:34   
Hi, just confirming same behavior with CMake 3.5.2
(0042642)
Kitware Robot   
2016-06-10 14:29   
Resolving issue as `moved`.

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