#!/bin/bash make_flags="-j$(nproc)" root_dir="$1" cd $root_dir/binutils-source patch -p1 <<'EOF' From 4476cc67e657d6b26cd453c555a611f1ab956660 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 30 Aug 2018 09:21:57 -0700 Subject: [PATCH] ld: Lookup section in output with the same name When there are more than one input sections with the same section name, SECNAME, linker picks the first one to define __start_SECNAME and __stop_SECNAME symbols. When the first input section is removed by comdat group, we need to check if there is still an output section with section name SECNAME. PR ld/23591 * ldlang.c (undef_start_stop): Lookup section in output with the same name. --- ld/ldlang.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/ld/ldlang.c b/ld/ldlang.c index 8878ccd..d644b56 100644 --- a/ld/ldlang.c +++ b/ld/ldlang.c @@ -6097,6 +6097,24 @@ undef_start_stop (struct bfd_link_hash_entry *h) || strcmp (h->u.def.section->name, h->u.def.section->output_section->name) != 0) { + asection *sec = bfd_get_section_by_name (link_info.output_bfd, + h->u.def.section->name); + if (sec != NULL) + { + /* When there are more than one input sections with the same + section name, SECNAME, linker picks the first one to define + __start_SECNAME and __stop_SECNAME symbols. When the first + input section is removed by comdat group, we need to check + if there is still an output section with section name + SECNAME. */ + asection *i; + for (i = sec->map_head.s; i != NULL; i = i->map_head.s) + if (strcmp (h->u.def.section->name, i->name) == 0) + { + h->u.def.section = i; + return; + } + } h->type = bfd_link_hash_undefined; h->u.undef.abfd = NULL; } -- 2.17.1 EOF cd .. TARGETS="aarch64-linux-gnu" # Build target-specific GNU as ; build them first so that the few documentation # files they install are overwritten by the full binutils build. for target in $TARGETS; do mkdir binutils-$target cd binutils-$target ../binutils-source/configure --prefix /tools/binutils/ --disable-gold --disable-ld --disable-binutils --disable-gprof --disable-nls --target=$target || exit 1 make $make_flags || exit 1 make install $make_flags DESTDIR=$root_dir || exit 1 cd .. done # Build binutils mkdir binutils-objdir cd binutils-objdir # --enable-targets builds extra target support in ld. # Enabling aarch64 support brings in arm support, so we don't need to specify that too. ../binutils-source/configure --prefix /tools/binutils/ --enable-gold --enable-plugins --disable-nls --enable-targets="$TARGETS" || exit 1 make $make_flags || exit 1 make install $make_flags DESTDIR=$root_dir || exit 1 cd .. # Make a package of the built binutils cd $root_dir/tools tar caf $root_dir/binutils.tar.xz binutils/