From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: philmd@redhat.com, i@maskray.me, berrange@redhat.com
Subject: [PATCH v2 5/7] configure: Unnest detection of -z,relro and -z,now
Date: Wed, 18 Dec 2019 12:34:39 -1000 [thread overview]
Message-ID: <20191218223441.23852-6-richard.henderson@linaro.org> (raw)
In-Reply-To: <20191218223441.23852-1-richard.henderson@linaro.org>
There is nothing about these options that is related to PIE.
Use them unconditionally.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Do not split into two tests.
---
configure | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/configure b/configure
index 7a646ec007..2503288654 100755
--- a/configure
+++ b/configure
@@ -2040,9 +2040,6 @@ if test "$pie" != "no" ; then
QEMU_CFLAGS="-fPIE -DPIE $QEMU_CFLAGS"
LDFLAGS="-pie $LDFLAGS"
pie="yes"
- if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
- LDFLAGS="-Wl,-z,relro -Wl,-z,now $LDFLAGS"
- fi
else
if test "$pie" = "yes"; then
error_exit "PIE not available due to missing toolchain support"
@@ -2053,6 +2050,12 @@ if test "$pie" != "no" ; then
fi
fi
+# Detect support for PT_GNU_RELRO + DT_BIND_NOW.
+# The combination is known as "full relro", because .got is read-only too.
+if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
+ LDFLAGS="-Wl,-z,relro -Wl,-z,now $LDFLAGS"
+fi
+
##########################################
# __sync_fetch_and_and requires at least -march=i486. Many toolchains
# use i686 as default anyway, but for those that don't, an explicit
--
2.20.1
next prev parent reply other threads:[~2019-12-18 22:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-18 22:34 [PATCH v2 0/7] configure: Improve PIE and other linkage Richard Henderson
2019-12-18 22:34 ` [PATCH v2 1/7] configure: Drop adjustment of textseg Richard Henderson
2020-01-07 11:34 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 2/7] tcg: Remove softmmu code_gen_buffer fixed address Richard Henderson
2020-01-07 11:35 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 3/7] configure: Do not force pie=no for non-x86 Richard Henderson
2020-01-07 11:37 ` Philippe Mathieu-Daudé
2020-01-07 12:58 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 4/7] configure: Always detect -no-pie toolchain support Richard Henderson
2020-01-07 13:16 ` Alex Bennée
2020-01-08 0:45 ` Richard Henderson
2019-12-18 22:34 ` Richard Henderson [this message]
2019-12-18 22:46 ` [PATCH v2 5/7] configure: Unnest detection of -z, relro and -z, now Philippe Mathieu-Daudé
2019-12-19 7:11 ` Fangrui Song
2020-01-07 13:18 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 6/7] configure: Override the os default with --disable-pie Richard Henderson
2020-01-07 13:24 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 7/7] configure: Support -static-pie if requested Richard Henderson
2020-01-07 13:45 ` Alex Bennée
2020-01-06 2:57 ` [PATCH v2 0/7] configure: Improve PIE and other linkage Richard Henderson
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