From fac31afe6a8ee178de0662353dbd6f2cc5ab3556 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 29 Jan 2019 15:08:16 +0000 Subject: [PATCH] [ARC] Enable init_array support. 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 * gcc/config.gcc: Force .init_array for ARC From-SVN: r268365 --- gcc/ChangeLog | 4 ++++ gcc/config.gcc | 5 ++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9a3d7d5..dbaf550 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2019-01-29 Vineet Gupta + + * gcc/config.gcc: Force .init_array for ARC. + 2019-01-29 Richard Biener PR debug/87295 diff --git a/gcc/config.gcc b/gcc/config.gcc index a189cb1..f7b7dcc 100644 --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -1110,7 +1110,10 @@ 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" tmake_file="${tmake_file} arm/t-arm arm/t-vxworks" -- 2.7.4