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Linux: add a note to the ELF binary what minimum Linux is needed

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Change-Id: Ia53158e207a94bf49489fffd14c8d2a1f173ff97
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Thiago Macieira 2017-06-16 22:47:49 -07:00
parent 919b12d969
commit bb8a61866e
2 changed files with 108 additions and 0 deletions
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16
src/corelib/global/global.pri
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@ -59,6 +59,22 @@ if(linux*|hurd*):!cross_compile:!static:!*-armcc* {
DEFINES += ELF_INTERPRETER=\\\"$$system(LC_ALL=C readelf -l /bin/ls | perl -n -e \'$$prog\')\\\"
}
linux:!static {
precompile_header {
# we'll get an error if we just use SOURCES +=
no_pch_assembler.commands = $$QMAKE_CC -c $(CFLAGS) $(INCPATH) ${QMAKE_FILE_IN} -o ${QMAKE_FILE_OUT}
no_pch_assembler.dependency_type = TYPE_C
no_pch_assembler.output = ${QMAKE_VAR_OBJECTS_DIR}${QMAKE_FILE_BASE}$${first(QMAKE_EXT_OBJ)}
no_pch_assembler.input = NO_PCH_ASM
no_pch_assembler.name = compiling[no_pch] ${QMAKE_FILE_IN}
silent: no_pch_assembler.commands = @echo compiling[no_pch] ${QMAKE_FILE_IN} && $$no_pch_assembler.commands
QMAKE_EXTRA_COMPILERS += no_pch_assembler
NO_PCH_ASM += global/minimum-linux.S
} else {
SOURCES += global/minimum-linux.S
}
}
qtConfig(slog2): \
LIBS_PRIVATE += -lslog2

92
src/corelib/global/minimum-linux.S Normal file
View File

@ -0,0 +1,92 @@
/****************************************************************************
**
** Copyright (C) 2017 Intel Corporation.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
/* Copied from #include <elf.h>:
*/
#define ELF_NOTE_GNU "GNU"
#define NT_GNU_ABI_TAG 1
#define ELF_NOTE_OS_LINUX 0
#ifdef __arm__
# define progbits %progbits
# define note %note
#else
# define progbits @progbits
# define note @note
#endif
/* Add information for the ELF dynamic linker what the minimum Linux version
* required for Qt is.
*
* The .note.ABI-tag note section is defined at
* https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/noteabitag.html
*/
.section ".note.GNU-stack", "", progbits
.section ".note.ABI-tag", "a", note
.align 4 /* we have 32-bit data */
/* * For the format of the note section's contents, see Elf32_Nhdr / Elf64_Nhdr */
.long .Lnameend-.Lname /* n_namesz */
.long 16 /* n_descsz(16 bytes, normative) */
.long NT_GNU_ABI_TAG /* n_type */
.Lname:
.asciz ELF_NOTE_GNU
.Lnameend:
/* Operating systems: */
.long ELF_NOTE_OS_LINUX
/* Minimum Linux kernel version:
* We require the following features in Qt (unconditional, no fallback):
* Feature Added in version
* - inotify_init1 before 2.6.12-rc12
* - futex(2) before 2.6.12-rc12
* - FUTEX_PRIVATE_FLAG 2.6.22
* - O_CLOEXEC 2.6.23
* - eventfd 2.6.23
* - pipe2 & dup3 2.6.27
* - accept4 2.6.28
*/
.long 2
.long 6
.long 28