[Bug boehm-gc/27963] New: [4.2 Regression] libjava fails to build if it isn't built by default

[gcc-bugzilla at gcc dot gnu dot org]

Trying to bootstrap mainline on IRIX 6.5 with java included failed since
boehm-gc (which is required for libjava) isn't built:

In file included from /vol/gcc/src/gcc-dist/libjava/include/jvm.h:25,
                 from /vol/gcc/src/gcc-dist/libjava/include/java-interp.h:14,
                 from /vol/gcc/src/gcc-dist/libjava/defineclass.cc:23:
./include/java-gc.h:30:53: error: gc_ext_config.h: No such file or directory

This happens due to this change:

2006-06-06  David Ayers  <d.ayers@inode.at>

        PR libobjc/13946
        * Makefile.def: Add dependencies for libobjc which boehm-gc.
        * Makefile.in: Regenerate.
        * configure.in: Add --enable-objc-gc at toplevel and have it
        enable boehm-gc for Objective-C.
        Remove target-boehm-gc from libgcj.
        Add target-boehm-gc to target_libraries.
        Add target-boehm-gc to noconfigdirs where ${libgcj}
        is specified.

On platforms (like IRIX 6), where libjava just isn't built *by default*,
unconditionally adding boehm-gc to noconfigdirs inhibits building boehm-gc
completely, though it could build and is required for libjava.

This is a regression from the 4.1 branch.

Environment:
System: IRIX64 columba 6.5 07010238 IP27



host: mips-sgi-irix6.5
build: mips-sgi-irix6.5
target: mips-sgi-irix6.5
configured with: /vol/gcc/src/gcc-dist/configure --prefix=/vol/gcc
--with-local-prefix=/vol/gcc --disable-nls --with-gnu-as
--with-as=/vol/gcc/lib/gas-2.16.1 --enable-libgcj
--with-gmp-dir=/vol/gnu/obj/gmp-4.1.3
--with-mpfr-dir=/vol/gnu/obj/gmp-4.1.3/mpfr
--enable-languages=c,c++,fortran,java,objc,ada --disable-libmudflap

How-To-Repeat:
Bootstrap mainline as described.


-- 
           Summary: [4.2 Regression] libjava fails to build if it isn't
                    built by default
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: boehm-gc
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at techfak dot uni-bielefeld dot de
 GCC build triplet: mips-sgi-irix6.5
  GCC host triplet: mips-sgi-irix6.5
GCC target triplet: mips-sgi-irix6.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27963