linker flags during configure tests

[Riccardo Mottola]

Hi,

I installed gnustep's version of libobjc and then run configure on make 
again.

./configure --with-layout=gnustep --prefix=/opt/GNUstep LIBS="-lrt"

I get though:
checking for the flag to link libobjc... -lobjc
checking whether objc has thread support... no

If I check the failed test, I see:

configure:6221: gcc -o conftest -g -O2 -x objective-c -I. 
-I/opt/GNUstep/Syste
m/Library/Headers   -L/opt/GNUstep/System/Library/Libraries 
-fgnu-runtime -DGNU_RUNTIME   conftest.c -lobjc >&5
In file included from conftest.c:8:
config_thread.m:7: warning: incomplete implementation of class 
'NXConstantString'
config_thread.m:7: warning: method definition for '-length' not found
config_thread.m:7: warning: method definition for '-cString' not found
Undefined                       first referenced
 symbol                             in file
sched_yield /opt/GNUstep/System/Library/Libraries/libobjc.so
ld: fatal: Symbol referencing errors. No output written to conftest

This is on Solaris, where sched_yield needs the "-lrt" flag, it looks as 
if the test diregards the LIBS variable? Could that be? Or?

Thank you,
Riccardo