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Re: [PULL for-5.0 07/10] configure: Support -static-pie if requested
From: |
Laurent Vivier |
Subject: |
Re: [PULL for-5.0 07/10] configure: Support -static-pie if requested |
Date: |
Tue, 31 Mar 2020 15:44:45 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 |
On 31/03/2020 15:34, Laurent Vivier wrote:
> On 31/03/2020 05:54, Richard Henderson wrote:
>> Recent toolchains support static and pie at the same time.
>>
>> As with normal dynamic builds, allow --static to default to PIE
>> if supported by the toolchain. Allow --enable/--disable-pie to
>> override the default.
>>
>> Reviewed-by: Alex Bennée <address@hidden>
>> Signed-off-by: Richard Henderson <address@hidden>
>> ---
>> v2: Fix --disable-pie --static
>> v3: Update for QEMU_LDFLAGS.
>> ---
>> configure | 19 ++++++++++++-------
>> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> 'configure --static" always produces a dynamically linked binary for me
>
> .../configure' '--disable-system' '--enable-user' '--disable-tools'
> '--static'
> ...
> CFLAGS -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -g
> QEMU_CFLAGS -Werror -pthread -I/usr/include/glib-2.0
> -I/usr/lib64/glib-2.0/include -fPIE -DPIE -m64 -mcx16 -D_GNU_SOURCE
> -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes
> -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes
> -fno-strict-aliasing -fno-common -fwrapv -std=gnu99
> -Wexpansion-to-defined -Wendif-labels -Wno-shift-negative-value
> -Wno-missing-include-dirs -Wempty-body -Wnested-externs
> -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers
> -Wold-style-declaration -Wold-style-definition -Wtype-limits
> -fstack-protector-strong -I/usr/include/libdrm
> -I$(SRC_PATH)/capstone/include
> QEMU_LDFLAGS -Wl,--warn-common -Wl,-z,relro -Wl,-z,now -static-pie
> -m64 -fstack-protector-strong
> ...
> static build yes
> ...
> PIE yes
>
> make -j 8 m68k-linux-user/clean
> make -j 8 m68k-linux-user/all
>
> $ file m68k-linux-user/qemu-m68k
> m68k-linux-user/qemu-m68k: ELF 64-bit LSB pie executable, x86-64,
> version 1 (GNU/Linux), dynamically linked,
> BuildID[sha1]=363ee31697e874085ec53c2af454a070c62647e1, for GNU/Linux
> 3.2.0, with debug_info, not stripped, too many notes (256)
>
> $ gdb --version
> GNU gdb (GDB) Fedora 8.3.50.20190824-30.fc31
> Copyright (C) 2019 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
> ld --version
> GNU ld version 2.32-31.fc31
> Copyright (C) 2019 Free Software Foundation, Inc.
> This program is free software; you may redistribute it under the terms of
> the GNU General Public License version 3 or (at your option) a later
> version.
> This program has absolutely no warranty.
>
> Any idea of what happens?
In fact, the binary works well in a chroot, so it should be a bug in
"file" command.
Thanks,
Laurent
- [PULL for-5.0 01/10] configure: Drop adjustment of textseg, (continued)
- [PULL for-5.0 01/10] configure: Drop adjustment of textseg, Richard Henderson, 2020/03/30
- [PATCH for-5.0] tcg/i386: Fix INDEX_op_dup2_vec, Richard Henderson, 2020/03/30
- [PULL for-5.0 03/10] configure: Do not force pie=no for non-x86, Richard Henderson, 2020/03/30
- [PULL for-5.0 02/10] tcg: Remove softmmu code_gen_buffer fixed address, Richard Henderson, 2020/03/30
- [PULL for-5.0 04/10] configure: Always detect -no-pie toolchain support, Richard Henderson, 2020/03/30
- [PULL for-5.0 05/10] configure: Unnest detection of -z, relro and -z, now, Richard Henderson, 2020/03/30
- [PULL for-5.0 06/10] configure: Override the os default with --disable-pie, Richard Henderson, 2020/03/30
- [PULL for-5.0 07/10] configure: Support -static-pie if requested, Richard Henderson, 2020/03/30
- [PULL for-5.0 08/10] target/mips: Fix loongson multimedia condition instructions, Richard Henderson, 2020/03/30
- [PULL for-5.0 09/10] tcg/i386: Fix INDEX_op_dup2_vec, Richard Henderson, 2020/03/30
- [PULL for-5.0 10/10] decodetree: Use Python3 floor division operator, Richard Henderson, 2020/03/30
- Re: [PULL for-5.0 00/10] tcg patch queue, Peter Maydell, 2020/03/31