[Boost-bugs] [Boost C++ Libraries] #6695: config/auto_link.hpp #errors unnecessarily errors when mixing /RTC and release CRTs

Subject: [Boost-bugs] [Boost C++ Libraries] #6695: config/auto_link.hpp #errors unnecessarily errors when mixing /RTC and release CRTs
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-03-16 18:42:34

#6695: config/auto_link.hpp #errors unnecessarily errors when mixing /RTC and
release CRTs
------------------------------------------+---------------------------------
 Reporter:  Ben Craig <ben.craig@…>       |       Owner:  johnmaddock
     Type:  Bugs                          |      Status:  new        
Milestone:  Boost 1.50.0                  |   Component:  config     
  Version:  Boost 1.46.1                  |    Severity:  Problem    
 Keywords:                                |  
------------------------------------------+---------------------------------
 config/auto_link.hpp has the following code:
 #if defined(__MSVC_RUNTIME_CHECKS) && !defined(_DEBUG)
 #  pragma message("Using the /RTC option without specifying a debug
 runtime will lead to linker errors")
 #  pragma message("Hint: go to the code generation options and switch to
 one of the debugging runtimes")
 #  error "Incompatible build options"
 #endif

 This prevents builds that would otherwise succeed.  The attached program
 uses the program_options and system libraries.  If I remove these checks,
 I can build, link, and run it with the following invocations of Visual
 Studio 2003's cl.exe and link.exe, with no warnings or errors:

 cl.exe /c /Foauto_link_test.obj /W3 /GR /GX /Od /MD /RTC1 /DDEBUG /I<boost
 include path> auto_link_test.cpp
 link.exe /subsystem:console /LIBPATH:<boost lib path>
 /OUT:auto_link_test.exe auto_link_test.obj

 When the flags are present, I hit the previously mentioned #error.

 In my company's local version of boost 1.46.1, I have removed this check
 with no issues.  We build the boost libraries and our code with Visual
 Studio 2003 (i386), Visual Studio 2005 (i386 and x64), Visual Studio 2008
 (i386 and x64) and Visual Studio 2010 (i386 and x64).

 My proposed fix is to remove these checks entirely.  If there are specific
 libraries that genuinely won't work with /RTC and a debug runtime, then
 this check could be moved to those library headers.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6695>
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