id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
6695,config/auto_link.hpp #errors unnecessarily errors when mixing /RTC and release CRTs,Ben Craig <ben.craig@…>,John Maddock,"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.
",Bugs,closed,Boost 1.50.0,config,Boost 1.46.1,Problem,wontfix,,