libgccjit: allow common objects in $(EXTRA_GCC_OBJS) and $(EXTRA_OBJS)

This patch fixes libgccjit build failure on loongarch* targets,
and could probably be useful for future ports.

For now, libgccjit is linked with objects from $(EXTRA_GCC_OBJS) and
libbackend.a, which contains object files from $(EXTRA_OBJS).

This effectively forbids any overlap between those two lists, i.e. all
target-specific shared code between the gcc driver and compiler
executables must go into gcc/common/config/<arch>/<arch>-common.cc,
which feels a bit inconvenient when there are a lot of "common" stuff
that we want to put into separate source files.

By linking libgccjit with $(EXTRA_GCC_OBJS_EXCLUSIVE), which contains
all elements from $(EXTRA_GCC_OBJS) but not $(EXTRA_OBJS), this problem
can be alleviated.

This patch does not affect any other target architecture than loongarch,
and has been bootstrapped and regression-tested on loongarch64-linux-gnuf64
an x86_64-pc-linux-gnu.

* gcc/jit/ChangeLog:

	* Make-lang.in: only link objects from $(EXTRA_GCC_OBJS)
	that's not in $(EXTRA_OBJS) into libgccjit.

0 files changed, 0 insertions, 0 deletions