[Bug libmudflap/18885] linker does not link libmudflap automatically with -fmudflap

[ludo at gnu dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18885

Ludovic Courtès <ludo at gnu dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ludo at gnu dot org

--- Comment #4 from Ludovic Courtès <ludo at gnu dot org> 2011-02-08 15:58:22 UTC ---
I can confirm the problem with 4.5.1 on x86_64-linux-gnu.

Indeed, the `mflib' spec lacks `-lmudflap':

$ gcc -dumpspecs |grep -A2 -E '(mflib|link_command)'
*mflib:
%{fmudflap|fmudflapth: -export-dynamic}

--
*link_command:
%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:    %(linker)    
%{fuse-linker-plugin:     -plugin %(linker_plugin_file)    
-plugin-opt=%(lto_wrapper)     -plugin-opt=%(lto_gcc)    
%{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)}        
%{static:-plugin-opt=-pass-through=-lc}         %{O*:-plugin-opt=-O%*}    
%{w:-plugin-opt=-w}     %{f*:-plugin-opt=-f%*}     %{m*:-plugin-opt=-m%*}    
%{v:-plugin-opt=-v}     }     %{flto} %{fwhopr} %l %{pie:-pie} %X %{o*} %{A}
%{d} %{e*} %{m} %{N} %{n} %{r}    %{s} %{t} %{u*} %{x} %{z} %{Z}
%{!A:%{!nostdlib:%{!nostartfiles:%S}}}    %{static:} %{L*} %(mfwrap)
%(link_libgcc) %o   
%{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}
%(mflib)    %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}   
%{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}   
%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}