MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0015961CMakeCMakepublic2016-02-09 08:142016-06-10 14:31
Reporterraffael casagrande 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
PlatformWindows 7OSOS Version
Product VersionCMake 3.3.2 
Target VersionFixed in Version 
Summary0015961: CMake Regex does not support lookahead regular expressions.
DescriptionTrying to use a Regular expression that contains a lookahead clause is not supported by CMake.
Steps To ReproduceTry to execute the following CMake statement:
string(REGEX MATH "(?!red|green|blue)" _bla ${CMAKE_CURRENT_LIST_DIR})

It will fail with:

 string sub-command REGEX, mode REPLACE failed to compile regex
  "(?!red|green|blue)".
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Issue History
Date ModifiedUsernameFieldChange
2016-02-09 08:14raffael casagrandeNew Issue
2016-02-09 09:07Ben BoeckelNote Added: 0040447
2016-06-10 14:29Kitware RobotNote Added: 0042935
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
(0040447)
Ben Boeckel   
2016-02-09 09:07   
Yeah, that isn't supported. Adding support would likely mean rewriting the regex engine (which is old, global variable-driven C code).
(0042935)
Kitware Robot   
2016-06-10 14:29   
Resolving issue as `moved`.

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