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[PULL 05/41] configure: Unnest detection of -z,relro and -z,now
From: |
Richard Henderson |
Subject: |
[PULL 05/41] configure: Unnest detection of -z,relro and -z,now |
Date: |
Wed, 8 Jan 2020 14:44:47 +1100 |
There is nothing about these options that is related to PIE.
Use them unconditionally.
Reviewed-by: Alex Bennée <address@hidden>
Reviewed-by: Fangrui Song <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
v2: Do not split into two tests.
---
configure | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/configure b/configure
index f5248f86cd..1dd12edcc3 100755
--- a/configure
+++ b/configure
@@ -2041,9 +2041,6 @@ 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"
@@ -2054,6 +2051,12 @@ 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.plt 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
- [PULL 00/41] tcg patch queue, Richard Henderson, 2020/01/07
- [PULL 02/41] tcg: Remove softmmu code_gen_buffer fixed address, Richard Henderson, 2020/01/07
- [PULL 01/41] configure: Drop adjustment of textseg, Richard Henderson, 2020/01/07
- [PULL 03/41] configure: Do not force pie=no for non-x86, Richard Henderson, 2020/01/07
- [PULL 04/41] configure: Always detect -no-pie toolchain support, Richard Henderson, 2020/01/07
- [PULL 05/41] configure: Unnest detection of -z,relro and -z,now,
Richard Henderson <=
- [PULL 06/41] configure: Override the os default with --disable-pie, Richard Henderson, 2020/01/07
- [PULL 07/41] configure: Support -static-pie if requested, Richard Henderson, 2020/01/07
- [PULL 08/41] target/xtensa: Use probe_access for itlb_hit_test, Richard Henderson, 2020/01/07
- [PULL 09/41] cputlb: Use trace_mem_get_info instead of trace_mem_build_info, Richard Henderson, 2020/01/07
- [PULL 10/41] trace: Remove trace_mem_build_info_no_se_[bl]e, Richard Henderson, 2020/01/07
- [PULL 11/41] target/s390x: Include tcg.h in mem_helper.c, Richard Henderson, 2020/01/07
- [PULL 12/41] target/arm: Include tcg.h in sve_helper.c, Richard Henderson, 2020/01/07
- [PULL 13/41] accel/tcg: Include tcg.h in tcg-runtime.c, Richard Henderson, 2020/01/07
- [PULL 14/41] linux-user: Include tcg.h in syscall.c, Richard Henderson, 2020/01/07
- [PULL 15/41] linux-user: Include trace-root.h in syscall-trace.h, Richard Henderson, 2020/01/07