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When cross-building with clang, we use `--target` with a target that is derived from the configure target, with the vendor removed. So for `configure --target=aarch64-unknown-linux-gnu`, we use `clang --target=aarch64-linux-gnu`. Then, clang itself looks for tools as `$target-$tool` first, then `$tool`, which means for the assembler, it's looking for `aarch64-linux-gnu-as` before `as`, but not `aarch64-unknown-linux-gnu-as`. Building GNU as with `--target=aarch64-unknown-linux-gnu` creates the `aarch64-unknown-linux-gnu-as`, but we really want `aarch64-linux-gnu`, so we adjust the target in the binutils build script. Differential Revision: https://phabricator.services.mozilla.com/D25684 --HG-- extra : moz-landing-system : lando
97 lines
2.9 KiB
Bash
Executable file
97 lines
2.9 KiB
Bash
Executable file
#!/bin/bash
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binutils_version=2.31.1
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make_flags="-j$(nproc)"
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root_dir="$1"
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cd $root_dir
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cd binutils-$binutils_version
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patch -p1 <<'EOF'
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From 4476cc67e657d6b26cd453c555a611f1ab956660 Mon Sep 17 00:00:00 2001
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From: "H.J. Lu" <hjl.tools@gmail.com>
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Date: Thu, 30 Aug 2018 09:21:57 -0700
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Subject: [PATCH] ld: Lookup section in output with the same name
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When there are more than one input sections with the same section name,
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SECNAME, linker picks the first one to define __start_SECNAME and
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__stop_SECNAME symbols. When the first input section is removed by
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comdat group, we need to check if there is still an output section
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with section name SECNAME.
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PR ld/23591
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* ldlang.c (undef_start_stop): Lookup section in output with
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the same name.
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---
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ld/ldlang.c | 18 ++++++++++++++++++
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1 file changed, 18 insertions(+)
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diff --git a/ld/ldlang.c b/ld/ldlang.c
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index 8878ccd..d644b56 100644
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--- a/ld/ldlang.c
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+++ b/ld/ldlang.c
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@@ -6097,6 +6097,24 @@ undef_start_stop (struct bfd_link_hash_entry *h)
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|| strcmp (h->u.def.section->name,
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h->u.def.section->output_section->name) != 0)
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{
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+ asection *sec = bfd_get_section_by_name (link_info.output_bfd,
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+ h->u.def.section->name);
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+ if (sec != NULL)
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+ {
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+ /* When there are more than one input sections with the same
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+ section name, SECNAME, linker picks the first one to define
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+ __start_SECNAME and __stop_SECNAME symbols. When the first
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+ input section is removed by comdat group, we need to check
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+ if there is still an output section with section name
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+ SECNAME. */
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+ asection *i;
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+ for (i = sec->map_head.s; i != NULL; i = i->map_head.s)
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+ if (strcmp (h->u.def.section->name, i->name) == 0)
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+ {
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+ h->u.def.section = i;
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+ return;
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+ }
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+ }
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h->type = bfd_link_hash_undefined;
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h->u.undef.abfd = NULL;
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}
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--
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2.17.1
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EOF
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cd ..
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TARGETS="aarch64-linux-gnu"
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# Build target-specific GNU as ; build them first so that the few documentation
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# files they install are overwritten by the full binutils build.
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for target in $TARGETS; do
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mkdir binutils-$target
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cd binutils-$target
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../binutils-$binutils_version/configure --prefix /tools/binutils/ --disable-gold --disable-ld --disable-binutils --disable-gprof --disable-nls --target=$target || exit 1
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make $make_flags || exit 1
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make install $make_flags DESTDIR=$root_dir || exit 1
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cd ..
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done
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# Build binutils
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mkdir binutils-objdir
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cd binutils-objdir
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# --enable-targets builds extra target support in ld.
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# Enabling aarch64 support brings in arm support, so we don't need to specify that too.
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../binutils-$binutils_version/configure --prefix /tools/binutils/ --enable-gold --enable-plugins --disable-nls --enable-targets="$TARGETS" || exit 1
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make $make_flags || exit 1
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make install $make_flags DESTDIR=$root_dir || exit 1
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cd ..
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# Make a package of the built binutils
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cd $root_dir/tools
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tar caf $root_dir/binutils.tar.xz binutils/
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