Hi Eric,
>> I haven't tried to readd the boehm-gc objc support that has also been
>> disabled, don't know about anybody using that.
>
> I always configure with --enable-objc-gc. The only reason Apple
> deprecated garbage collection for Objective C is because they replaced
> it with Automated Reference Counting in clang, which GCC doesn't
> support yet. So, until GCC supports Automated Reference Counting,
> please keep boehm-gc support for objc.
me too, though mostly to have maximum test coverage (primarily on
Solaris). As expected, a x86_64-apple-darwin16 bootstrap with
--enable-objc-gc just failed for me. I'm testing the following patch
(on top of Jakub's).
Rainer
2016-10-01 Rainer Orth <r...@cebitec.uni-bielefeld.de>
* configure.ac (target_libraries): Readd target-boehm-gc.
Restore --enable-objc-gc handling.
* configure: Regenerate.
--- configure.ac.pre-bgc 2016-09-30 23:20:44.000000000 +0200
+++ configure.ac 2016-09-30 23:28:35.952184178 +0200
@@ -161,6 +161,7 @@ target_libraries="target-libgcc \
target-libssp \
target-libquadmath \
target-libgfortran \
+ target-boehm-gc \
target-libffi \
target-libobjc \
target-libada \
@@ -2054,6 +2055,28 @@ for dir in $configdirs $build_configdirs
fi
done
+# Check for Boehm's garbage collector
+AC_ARG_ENABLE(objc-gc,
+[AS_HELP_STRING([--enable-objc-gc],
+ [enable use of Boehm's garbage collector with the
+ GNU Objective-C runtime])],
+[case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
+ *,objc,*:*:yes:*target-boehm-gc*)
+ AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
+ ;;
+esac])
+
+# Make sure we only build Boehm's garbage collector if required.
+case ,${enable_languages},:${enable_objc_gc} in
+ *,objc,*:yes)
+ # Keep target-boehm-gc if requested for Objective-C.
+ ;;
+ *)
+ # Otherwise remove target-boehm-gc.
+ noconfigdirs="$noconfigdirs target-boehm-gc"
+ ;;
+esac
+
# Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
case ,${enable_languages}, in
*,c++,*)
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
