[cmake-developers] [CMake 0015556]: CMAKE_<lang>_VISIBILITY_PRESET not used when compiling static libraries

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=15556 
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Reported By:                Kjell Irgens
Assigned To:                
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Project:                    CMake
Issue ID:                   15556
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2015-05-06 06:11 EDT
Last Modified:              2015-05-06 06:11 EDT
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Summary:                    CMAKE_<lang>_VISIBILITY_PRESET not used when
compiling static libraries
Description: 
When compiling a STATIC library the -fvisibility=hidden compiler flag is not set
to gcc when compiling.

Why is this a problem?  I am linking the resulting static library into another
SHARED library, and I want the symbols defined in the link library to be hidden,
which is why I used CMAKE_CPP_VISIBILITY_PRESET in the first place.

https://gcc.gnu.org/wiki/Visibility
"In your build system (Makefile etc), you will probably wish to add the
-fvisibility=hidden and -fvisibility-inlines-hidden options to the command line
arguments of every GCC invocation"

The workaround is to add -fvisibility=HIDDEN as to COMPILE_FLAGS.


Steps to Reproduce: 
set (CMAKE_C_VISIBILITY_PRESET hidden)

add_library (mplug STATIC test.c)

make VERBOSE=1

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Issue History 
Date Modified    Username       Field                    Change               
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2015-05-06 06:11 Kjell Irgens   New Issue                                    
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