gcc's common configure script has a subtle flaw that it only tests
{init,fini.preinit}_array support when NOT cross compiling. This causes
cross builds to erroneously deduce that the feature is not supported by
the target.| host-gcc-final-ab544139bfee/build/gcc/config.log | |configure:22941: checking for .preinit_array/.init_array/.fini_array support |configure:23106: checking cross compile... guessing |configure:23111: result: no The right fix is to enable this for *all* cross setups (and address any fallouts). However in the short-term to enable ARC glibc port to upstream, force enable this for ARC. This has been discussed at length on glibc mailing list [1], [2] [1] https://sourceware.org/ml/libc-alpha/2018-11/msg00870.html [2] https://sourceware.org/ml/libc-alpha/2019-01/msg00656.html gcc/ 2019-xx-xx Vineet Gupta <vgu...@synopsys.com> * gcc/config.gcc: Force .init_array for ARC Signed-off-by: Vineet Gupta <vgu...@synopsys.com> --- gcc/ChangeLog | 4 ++++ gcc/config.gcc | 3 +++ 2 files changed, 7 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f5872dbeab7c..4c86d5375bcc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2019-01-28 Vineet Gupta <vgu...@synopsys.com> + + * gcc/config.gcc: Force .init_array for ARC + 2019-01-28 Jakub Jelinek <ja...@redhat.com> PR middle-end/89002 diff --git a/gcc/config.gcc b/gcc/config.gcc index a189cb19f633..eef4b4eac918 100644 --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -1110,6 +1110,9 @@ arc*-*-linux*) case ${with_endian} in big*) tm_file="arc/big.h ${tm_file}" esac + # Force .init_array support. The configure script cannot always + # automatically detect that GAS supports it, yet we require it. + gcc_cv_initfini_array=yes ;; arm-wrs-vxworks|arm-wrs-vxworks7) extra_options="${extra_options} arm/vxworks.opt" -- 2.7.4 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
