[cygwin] libjava/java/lang/natClass.cc:904: error: thread-local storage not supported for this target

[Andrew Haley]

Christian Joensson writes:
 > Currently, and it's been there for a while, I get the following error
 > on gcc trunk:
 > 
 > ../../../gcc/libjava/java/lang/natClass.cc:904: error: thread-local
 > storage not supported for this target
 > make[3]: *** [java/lang/natClass.lo] Error 1
 > make[3]: Leaving directory `/usr/local/src/trunk/objdir/i686-pc-cygwin/libjava'
 > make[2]: *** [all-recursive] Error 1
 > make[2]: Leaving directory `/usr/local/src/trunk/objdir/i686-pc-cygwin/libjava'
 > make[1]: *** [all-target-libjava] Error 2
 > make[1]: Leaving directory `/usr/local/src/trunk/objdir'
 > make: *** [all] Error 2
 > 
 > My system is this:
 > 
 > Windows XP Pro/SP2 cygwin Pentium M processor 2.13GHz system with packages:
 > 
 > binutils             20060817-1     2.17.50 20060817
 > bison                2.3-1          2.3
 > cygwin               1.5.21-2
 > dejagnu              20021217-2     1.4.2.x
 > expect               20030128-1	    5.26
 > gcc                  3.4.4-1
 > gcc-ada              3.4.4-1
 > gcc-g++              3.4.4-1
 > gmp                  4.1.4-2
 > make                 3.81-1
 > tcltk                20060202-1     8.4
 > w32api               3.7-1
 > 
 > 
 > and the configure was done like this:
 > 
 >  ../gcc/configure   --enable-nls --without-included-gettext
 > --enable-version-specific-runtime-libs --without-x --enable-libgcj
 > --with-system-zlib --enable-threads=posix
 > --enable-languages=c,ada,c++,fortran,java,objc,obj-c++,treelang
 > 
 > Now, am I doing something terribly wrong here or is this a well know "bug"?

That __thread variable is surrounded by HAVE_TLS.  There is a
configure test which simply compiles this line:

__thread int foo;

and that configure test must succeed for HAVE_TLS to be set.  So, to
fix this we need to find out if that program did compile, and if so,
how.

--disable-tls in the configure line might solve your problem.

Andrew.