[tlbuild] Static linking of C++ library no longer working in cygwin build

Ken Brown kbrow1i at gmail.com
Mon Aug 10 15:18:57 CEST 2009

On 8/10/2009 8:28 AM, Peter Breitenlohner wrote:
> On Mon, 10 Aug 2009, Ken Brown wrote:
>> Hi Peter,
>> I've just discovered that static linking of the C++ runtime library 
>> stopped working in my cygwin build.  I found the following in 
>> Work/libs/teckit/config.log:
>> configure:5017: checking for statically linking C++ runtime library
>> configure:5059: g++-4 -o conftest.exe -Wno-write-strings 
>> -Wno-attributes -Wl,--enable-auto-import 
>> -Wl,--enable-runtime-pseudo-reloc conftest.cpp -nodefaultlibs 
>> -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic -lm -lgcc_eh -lgcc -lc -lgcc_eh 
>> -lgcc >&5
>> [...]
>> configure:5102: result: not supported
>> So the special cygwin test that you put into kpse-cxx-hack.m4 isn't 
>> being used.  Could the problem be that $host is not defined during the 
>> teckit configuration?
>> I've been building with the -C option, so the "not supported" result 
>> is cached and the test is never done again.
> Hi Ken,
> Ouch, my mistake. kpse-cxx-hack, as originally designed for texk/*/ 
> requires
> AC_CANONOCAL_HOST but doesn't say so since that is automatically 
> provided by
> kpse-common.m4 used in texk/*/configure.ac.  Later kpse-cxx-hack was also
> used for teckit_compile from libs/teckit/.
> Could you please run a quick test (assuming the you have used the ./Build
> script):
>     cd ./Work
>     rm config.cache
>     rm -rf texk/lcdf-typetools
>     make
> This should configure and build lcdf-typetools, this time linking the C++
> runtime library statically.  Please tell if this works result.

Hi Peter,

Yes, this works.
> In the meantime I'll fix kpse-cxx-hack.m4.

I just saw your second message saying that you've fixed this.  I'll 
rebuild and confirm that it works.




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