Re: linking error due to missing boost::assertion_failed_msg()

[Stephan Witt]

Am 07.09.2019 um 10:14 schrieb pdv <pdvissch...@edpnet.be>:
> 
> LyX fails to build on macos (Mojave, CMake, XCode) with the latest commit 
> (01ee3bf1f5) with message:
> 
> Undefined symbols for architecture x86_64:
>  "boost::assertion_failed_msg(char const*, char const*, char const*, char 
> const*, long)", referenced from:
>      boost::array<unsigned int, 256ul>::operator[](unsigned long) in 
> ConverterCache.o
>      boost::array<unsigned int, 256ul>::operator[](unsigned long) in 
> libfrontend_qt.a(GuiApplication.o)
>      boost::array<unsigned int, 256ul>::operator[](unsigned long) in 
> libsupport.a(FileName.o)
>      boost::array<unsigned int, 256ul>::operator[](unsigned long) in 
> libfrontend_qt.a(GuiClipboard.o)
> 
> From the boost docs 
> (https://www.boost.org/doc/libs/1_68_0/libs/assert/doc/html/assert.html) it's 
> clear that boost::assertion_failed_msg() must be defined, ...
> 
> If the macro BOOST_ENABLE_ASSERT_HANDLER is defined when <boost/assert.hpp> 
> is included, BOOST_ASSERT_MSG(expr,msg) expands to
> 
> (BOOST_LIKELY(!!(expr))? ((void)0): ::boost::assertion_failed_msg(#expr,
>    msg, BOOST_CURRENT_FUNCTION, __FILE__, __LINE__))
> This is true regardless of whether NDEBUG is defined.
> 
> boost::assertion_failed_msg is declared in <boost/assert.hpp> as
> 
> namespace boost
> {
>    void assertion_failed_msg(char const * expr, char const * msg,
>        char const * function, char const * file, long line);
> }
> but it is never defined. The user is expected to supply an appropriate 
> definition.
> 
> ... which is not the case now, and BOOST_ASSERT_MSG is defined in 
> boost::array.hpp.
> 
> I've defined the additional function assertion_failed_msg()in boost.cpp 
> (patch attached) and this resolves the problem.
> 
> Two more remarks:
> 
> 1) I don't understand why this problem surfaces now and not earlier;
> 
> 2) There are additional definitions of assertion_failed() in client/boost.cpp 
> and in tex2lyx/boost.cpp;

I cannot find the commit 01ee3bf1f5. Is it a local one in your git checkout?

I don’t have this problem with neither with automake nor with cmake.

Stephan