Linux: add a note to the ELF binary what minimum Linux is needed
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>
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Thiago Macieira
parent
919b12d969
commit
bb8a61866e
@ -59,6 +59,22 @@ if(linux*|hurd*):!cross_compile:!static:!*-armcc* {
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DEFINES += ELF_INTERPRETER=\\\"$$system(LC_ALL=C readelf -l /bin/ls | perl -n -e \'$$prog\')\\\"
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DEFINES += ELF_INTERPRETER=\\\"$$system(LC_ALL=C readelf -l /bin/ls | perl -n -e \'$$prog\')\\\"
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}
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}
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linux:!static {
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precompile_header {
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# we'll get an error if we just use SOURCES +=
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no_pch_assembler.commands = $$QMAKE_CC -c $(CFLAGS) $(INCPATH) ${QMAKE_FILE_IN} -o ${QMAKE_FILE_OUT}
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no_pch_assembler.dependency_type = TYPE_C
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no_pch_assembler.output = ${QMAKE_VAR_OBJECTS_DIR}${QMAKE_FILE_BASE}$${first(QMAKE_EXT_OBJ)}
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no_pch_assembler.input = NO_PCH_ASM
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no_pch_assembler.name = compiling[no_pch] ${QMAKE_FILE_IN}
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silent: no_pch_assembler.commands = @echo compiling[no_pch] ${QMAKE_FILE_IN} && $$no_pch_assembler.commands
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QMAKE_EXTRA_COMPILERS += no_pch_assembler
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NO_PCH_ASM += global/minimum-linux.S
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} else {
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SOURCES += global/minimum-linux.S
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}
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}
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qtConfig(slog2): \
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qtConfig(slog2): \
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LIBS_PRIVATE += -lslog2
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LIBS_PRIVATE += -lslog2
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92
src/corelib/global/minimum-linux.S
Normal file
92
src/corelib/global/minimum-linux.S
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@ -0,0 +1,92 @@
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/****************************************************************************
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**
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** Copyright (C) 2017 Intel Corporation.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/* Copied from #include <elf.h>:
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*/
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#define ELF_NOTE_GNU "GNU"
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#define NT_GNU_ABI_TAG 1
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#define ELF_NOTE_OS_LINUX 0
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#ifdef __arm__
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# define progbits %progbits
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# define note %note
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#else
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# define progbits @progbits
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# define note @note
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#endif
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/* Add information for the ELF dynamic linker what the minimum Linux version
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* required for Qt is.
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*
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* The .note.ABI-tag note section is defined at
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* https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/noteabitag.html
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*/
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.section ".note.GNU-stack", "", progbits
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.section ".note.ABI-tag", "a", note
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.align 4 /* we have 32-bit data */
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/* * For the format of the note section's contents, see Elf32_Nhdr / Elf64_Nhdr */
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.long .Lnameend-.Lname /* n_namesz */
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.long 16 /* n_descsz(16 bytes, normative) */
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.long NT_GNU_ABI_TAG /* n_type */
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.Lname:
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.asciz ELF_NOTE_GNU
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.Lnameend:
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/* Operating systems: */
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.long ELF_NOTE_OS_LINUX
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/* Minimum Linux kernel version:
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* We require the following features in Qt (unconditional, no fallback):
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* Feature Added in version
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* - inotify_init1 before 2.6.12-rc12
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* - futex(2) before 2.6.12-rc12
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* - FUTEX_PRIVATE_FLAG 2.6.22
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* - O_CLOEXEC 2.6.23
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* - eventfd 2.6.23
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* - pipe2 & dup3 2.6.27
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* - accept4 2.6.28
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*/
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.long 2
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.long 6
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.long 28
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