Re: Error when detecting libunistring

[beuc]

Hi,

No clue on whether we need to add -lm in the unistring test anyone?

Cheers!
Sylvain

On Wed, Jun 25, 2014 at 10:21:26PM +0200, address@hidden wrote:
> Hi,
> 
> I'm currently experimenting with cross-compiling Guile 2 for Android.
> https://lists.gnu.org/archive/html/guile-user/2014-06/msg00011.html
> 
> 
> I met a weird issue: when configuring guile I get this test:
> ../configure --host=arm-linux-androideabi 
> --prefix=/usr/src/ndk-shared/sysroot/usr --without-threads
> [...]
> configure:15799: checking for libunistring
> configure:15821: arm-linux-androideabi-gcc -o conftest -g -O2 
> -I/usr/src/ndk-shared/sysroot/usr/include  conftest.c 
> /usr/src/ndk-shared/sysroot/usr/lib/libunistring.so -Wl,-rpath 
> -Wl,/usr/src/ndk-shared/sysroot/usr/lib  >&5
> /usr/src/ndk-shared/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld:
>  /usr/src/ndk-shared/sysroot/usr/lib/libunistring.so: error: undefined 
> reference to 'frexp'
> collect2: ld returned 1 exit status
> 
> 
> However, trying to reproduce with a simple project, I get:
> # http://www.beuc.net/misc/testunistring.tar.gz
> ../configure --host=arm-linux-androideabi
> [...]
> configure:7108: checking for libunistring
> configure:7130: arm-linux-androideabi-gcc -o conftest -g -O2   conftest.c  
> -lunistring >&5
> configure:7130: $? = 0
> configure:7140: result: yes
> 
> 
> I can't figure out why the guile test ends-up with linking the .so
> explicitely, while my test project uses '-lunistring'.
> Any leads?
> 
> Also, if using the .so directly is needed for some reason, do we need
> to add '-lm' somewhere in gnulib's libunistring test?