45 lines
1.6 KiB
Diff
45 lines
1.6 KiB
Diff
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From ff4dd4ce33133e675b7bedc86b73357c04631cb9 Mon Sep 17 00:00:00 2001
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From: Ariadne Conill <ariadne@dereferenced.org>
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Date: Fri, 21 Aug 2020 06:45:49 +0000
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Subject: [PATCH 03/35] specs: turn on -Wl,-z,now by default
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Previously, we also used to turn on -z relro here, but we now build
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binutils with --enable-relro, which is functionally equivalent.
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Binutils does not appear to have a similar option for enabling -z
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now by default.
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---
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gcc/doc/invoke.texi | 3 +++
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gcc/gcc.cc | 1 +
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2 files changed, 4 insertions(+)
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diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
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index b6731a4673c..f393c7846c6 100644
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--- a/gcc/doc/invoke.texi
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+++ b/gcc/doc/invoke.texi
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@@ -17961,6 +17961,9 @@ For example, @option{-Wl,-Map,output.map} passes @option{-Map output.map} to the
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linker. When using the GNU linker, you can also get the same effect with
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@option{-Wl,-Map=output.map}.
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+NOTE: In Alpine Linux, for LDFLAGS, the option
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+@option{-Wl,-z,now} is used. To disable, use @option{-Wl,-z,nonow}.
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+
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@opindex u
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@item -u @var{symbol}
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Pretend the symbol @var{symbol} is undefined, to force linking of
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diff --git a/gcc/gcc.cc b/gcc/gcc.cc
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index 33b56e721d2..f82fae23c22 100644
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--- a/gcc/gcc.cc
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+++ b/gcc/gcc.cc
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@@ -1144,6 +1144,7 @@ proper position among the other output files. */
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"%{flto|flto=*:%<fcompare-debug*} \
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%{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
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"%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
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+ "-z now " \
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"%X %{o*} %{e*} %{N} %{n} %{r}\
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%{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
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%{Wno-poison-system-directories:--no-poison-system-directories} \
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--
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2.41.0
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