MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0016137CMakeCMakepublic2016-06-07 09:562016-06-10 14:21
ReporterAndry81 
Assigned To 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionno change required 
PlatformIntel x86OSWindowsOS Version7 x64
Product VersionCMake 3.5.2 
Target VersionFixed in Version 
Summary0016137: ExternalProject_Add: Can't escape ; character in CMAKE_ARGS
DescriptionSeems ExternalProject_Add became broken from some time ago. I could not figure out when, but from version 3.5.2 (including 3.5.2-rc1) it does not work anymore.
All ";" characters does replace now by space whenever and not matter how you use the expression.
Steps To ReproduceExternalProject_Add(MySubProject SOURCE_DIR ${SUBPROJECT_ROOT}
    CMAKE_ARGS
        -DMYPATH=c:/blabla1;c:/blabla1/blabla2;c:/blabla1/blabla3
    INSTALL_COMMAND "" )
Additional InformationI Tried these to workaround it:
1. Quotes around the expression ("-DMYPATH=...")
2. Backlash escaping ("-DMYPATH=...\;...")
3. LIST APPEND instead SET
4. LIST_SEPARATOR in ExternalProject_Add
5. STRING REPLACE ^^ to ;

Nothing works.
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Issue History
Date ModifiedUsernameFieldChange
2016-06-07 09:56Andry81New Issue
2016-06-07 10:10Brad KingNote Added: 0041140
2016-06-07 10:10Brad KingStatusnew => resolved
2016-06-07 10:10Brad KingResolutionopen => no change required
2016-06-07 10:16Andry81Note Added: 0041141
2016-06-07 10:17Andry81Note Added: 0041142
2016-06-07 10:17Andry81Statusresolved => feedback
2016-06-07 10:17Andry81Resolutionno change required => reopened
2016-06-07 10:28Andry81Note Deleted: 0041142
2016-06-07 10:28Andry81Note Deleted: 0041141
2016-06-07 10:30Andry81Note Added: 0041143
2016-06-07 10:30Andry81Statusfeedback => new
2016-06-07 10:37Brad KingNote Added: 0041144
2016-06-07 10:37Brad KingStatusnew => resolved
2016-06-07 10:37Brad KingResolutionreopened => no change required
2016-06-07 10:42Andry81Note Added: 0041145
2016-06-07 11:00Brad KingNote Added: 0041146
2016-06-07 11:17Andry81Note Added: 0041147
2016-06-07 11:25Brad KingNote Added: 0041148
2016-06-07 11:28Brad KingNote Added: 0041149
2016-06-10 14:21Kitware RobotNote Added: 0041155
2016-06-10 14:21Kitware RobotStatusresolved => closed

Notes
(0041140)
Brad King   
2016-06-07 10:10   
Use this:

  CMAKE_ARGS -DMYPATH=c:/blabla1|c:/blabla1/blabla2|c:/blabla1/blabla3
  LIST_SEPARATOR |

The purpose of LIST_SEPARATOR is to work around this limitation of the CMake language.
(0041143)
Andry81   
2016-06-07 10:30   
Seems our build system uses some wrapper over ExternalProject_Add macro and not all arguments passes from wrapper to the cmake command. I'll try to look into this to fix that case. Thx!
(0041144)
Brad King   
2016-06-07 10:37   
$ cmake --version
cmake version 3.6.0-rc1

$ cat ../CMakeLists.txt
cmake_minimum_required(VERSION 3.5)
project(Issue16137 NONE)
include(ExternalProject)

ExternalProject_Add(MySubProject
  SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/SubProject
  CMAKE_ARGS -DMYPATH=c:/blabla1|c:/blabla1/blabla2|c:/blabla1/blabla3
  LIST_SEPARATOR |
  INSTALL_COMMAND ""
  )

$ cat ../SubProject/CMakeLists.txt
cmake_minimum_required(VERSION 3.5)
project(IssueSubProject NONE)
message(STATUS "MYPATH='${MYPATH}'")

$ cmake ..
-- Building for: Visual Studio 14 2015
...

$ grep MYPATH MySubProject.vcxproj
"C:\Program Files\CMake\bin\cmake.exe" -DMYPATH=c:/blabla1";"c:/blabla1/blabla2";"c:/blabla1/blabla3 "-GVisual Studio 14 2015" C:/.../SubProject

$ cmake --build . --config Debug
...
  Performing configure step for 'MySubProject'
  -- MYPATH='c:/blabla1;c:/blabla1/blabla2;c:/blabla1/blabla3'
...
(0041145)
Andry81   
2016-06-07 10:42   
Strange output. How can i get this one?
"C:\Program Files\CMake\bin\cmake.exe" "-DMYPATH=c:/blabla1;c:/blabla1/blabla2;c:/blabla1/blabla3" "-GVisual Studio 14 2015" C:/.../SubProject
(0041146)
Brad King   
2016-06-07 11:00   
The commands

   "C:\Program Files\CMake\bin\cmake.exe" "-DMYPATH=c:/blabla1;c:/blabla1/blabla2;c:/blabla1/blabla3" "-GVisual Studio 14 2015" C:/.../SubProject

and

   "C:\Program Files\CMake\bin\cmake.exe" -DMYPATH=c:/blabla1";"c:/blabla1/blabla2";"c:/blabla1/blabla3 "-GVisual Studio 14 2015" C:/.../SubProject

are identical after command line parsing. The details of how the arguments are quoted are not important.
(0041147)
Andry81   
2016-06-07 11:17   
Not in this case:
"C:\Program Files\CMake\bin\cmake.exe" "-DMYPATH=c:/bla bla1;c:/bla bla1/blabla2;c:/bla bla1/blabla3" "-GVisual Studio 14 2015" C:/.../SubProject
(0041148)
Brad King   
2016-06-07 11:25   
$ cat ../CMakeLists.txt
cmake_minimum_required(VERSION 3.5)
project(Issue16137 NONE)
include(ExternalProject)

ExternalProject_Add(MySubProject
  SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/SubProject
  CMAKE_ARGS "-DMYPATH=c:/bla bla1|c:/bla bla1/blabla2|c:/blabla1/bla bla3"
  LIST_SEPARATOR |
  INSTALL_COMMAND ""
  )

$ cmake ..

$ grep MYPATH MySubProject.vcxproj
"C:\Program Files\CMake\bin\cmake.exe" "-DMYPATH=c:/bla bla1";"c:/bla bla1/blabla2";"c:/blabla1/bla bla3" "-GVisual Studio 14 2015" C:/.../SubProject

$ cmake --build . --config Debug
...
  Performing configure step for 'MySubProject'
  -- MYPATH='c:/bla bla1;c:/bla bla1/blabla2;c:/blabla1/bla bla3'
...
(0041149)
Brad King   
2016-06-07 11:28   
For reference, the strange-looking ";" quoting behavior is specific to the VS IDE generators and is explained here:

  https://cmake.org/gitweb?p=cmake.git;a=blob;f=Source/cmOutputConverter.cxx;hb=v3.6.0-rc1#l814 [^]
(0041155)
Kitware Robot   
2016-06-10 14:21   
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