[cmake-developers] [CMake 0014706]: Sources compiled multiple times when building with make, multiple jobs, and targets with common dependencies

Mantis Bug Tracker mantis at public.kitware.com
Fri Jan 17 15:11:16 EST 2014


The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=14706 
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Reported By:                Luis Vega
Assigned To:                
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Project:                    CMake
Issue ID:                   14706
Category:                   CMake
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
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Date Submitted:             2014-01-17 15:11 EST
Last Modified:              2014-01-17 15:11 EST
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Summary:                    Sources compiled multiple times when building with
make, multiple jobs, and targets with common dependencies
Description: 
A source file will be compiled multiple times when the following combination of
conditions are met:
-Using gnu make to build the project.
-Two targets that have a common dependency are specified to the make command.
-Using multiple jobs.

If targets "foo" and "bar" depend on target "dep" and a build command is issued
as:
make -j foo bar
Then "dep" sources will be compiled twice.

Steps to Reproduce: 
Create library target "dep"
Create executable target "foo" and link to "dep"
Create executable target "bar" and link to "dep"
Create gnu makefiles with cmake
Issue build command as:   make -j foo bar

Output will show that each "dep" source was compiled twice (once per target that
depends on "dep").
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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2014-01-17 15:11 Luis Vega      New Issue                                    
2014-01-17 15:11 Luis Vega      File Added: example.tar.gz                    
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