[cmake-developers] [CMake 0013643]: GenerateExportHeader should work for module libraries too

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=13643 
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Reported By:                Gregoire
Assigned To:                
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Project:                    CMake
Issue ID:                   13643
Category:                   Modules
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2012-11-02 06:13 EDT
Last Modified:              2012-11-02 06:13 EDT
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Summary:                    GenerateExportHeader should work for module
libraries too
Description: 
I am doing my tests with visual 2008 and mingw.

As far as I understand a module is like a shared library that cannot 
be linked. Instead it is dynamically loaded and then we find and use 
symbols in it. It is like doing the linker's job manually at runtime.
 
If nothing is exported from my module then I do cannot find any 
symbol in it. Or at least I do not know how to do so.
 
I modified the GenerateExportHeader module to be able to export 
symbols from my MODULE:

# if(${type} STREQUAL "MODULE")
   # message(WARNING "This macro should not be used with libraries of
   # type MODULE") return()
# endif()
if(NOT ${type} STREQUAL "STATIC_LIBRARY" AND NOT ${type} STREQUAL
"SHARED_LIBRARY" AND NOT ${type} STREQUAL "MODULE_LIBRARY")
   message(WARNING "This macro can only be used with libraries")
   return()
endif()


Steps to Reproduce: 
Build a module with visual without exported symbols.
Use depends.exe (from http://www.dependencywalker.com/) to open the generated
dll.
It will not find any symbols which means that your application won't be able to
find it either, the module is useless.
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Issue History 
Date Modified    Username       Field                    Change               
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2012-11-02 06:13 Gregoire       New Issue                                    
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