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CMake compilation: do not use compiler extensions

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For now, compiler extensions are no longer activated on CMake sources.
However these extensions are still used for various third parties.

This MR is a partial answer to the issue #20454.
This commit is contained in:
Marc Chevrier 2020-03-14 17:20:49 +01:00
parent 7099db5dd4
commit f034b0f663
7 changed files with 57 additions and 0 deletions
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5
Source/CMakeLists.txt
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@ -1,6 +1,11 @@
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details. # file Copyright.txt or https://cmake.org/licensing for details.
# To ensure maximum portability across various compilers and platforms
# deactivate any compiler extensions
set(CMAKE_C_EXTENSIONS FALSE)
set(CMAKE_CXX_EXTENSIONS FALSE)
include(CheckIncludeFile) include(CheckIncludeFile)
# Check if we can build support for ELF parsing. # Check if we can build support for ELF parsing.
if(CMAKE_CXX_PLATFORM_ID MATCHES "OpenBSD") if(CMAKE_CXX_PLATFORM_ID MATCHES "OpenBSD")

5
Source/CPack/WiX/cmWIXFilesSourceWriter.cxx
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@ -1,5 +1,10 @@
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */ file Copyright.txt or https://cmake.org/licensing for details. */
#if defined(__CYGWIN__)
// For S_IWRITE symbol
# define _DEFAULT_SOURCE
#endif
#include "cmWIXFilesSourceWriter.h" #include "cmWIXFilesSourceWriter.h"
#include "cm_sys_stat.h" #include "cm_sys_stat.h"

10
Source/cmLoadCommandCommand.cxx
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@ -1,5 +1,15 @@
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */ file Copyright.txt or https://cmake.org/licensing for details. */
#if !defined(_WIN32) && !defined(__sun)
// POSIX APIs are needed
# define _POSIX_C_SOURCE 200809L
#endif
#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
// For isascii
# define _XOPEN_SOURCE 700
#endif
#include "cmLoadCommandCommand.h" #include "cmLoadCommandCommand.h"
#include <csignal> #include <csignal>

13
Source/cmStandardLexer.h
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@ -3,6 +3,19 @@
#ifndef cmStandardLexer_h #ifndef cmStandardLexer_h
#define cmStandardLexer_h #define cmStandardLexer_h
#if !defined(_WIN32) && !defined(__sun)
/* POSIX APIs are needed */
# define _POSIX_C_SOURCE 200809L
#endif
#if defined(__sun) && defined(__GNUC__) && !defined(__cplusplus)
/* C sources: for fileno and strdup */
# define _XOPEN_SOURCE 600
#endif
#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
/* For isascii */
# define _XOPEN_SOURCE 700
#endif
#include "cmsys/Configure.h" // IWYU pragma: keep #include "cmsys/Configure.h" // IWYU pragma: keep
/* Disable some warnings. */ /* Disable some warnings. */

10
Source/cmSystemTools.cxx
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@ -1,5 +1,15 @@
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */ file Copyright.txt or https://cmake.org/licensing for details. */
#if !defined(_WIN32) && !defined(__sun)
// POSIX APIs are needed
# define _POSIX_C_SOURCE 200809L
#endif
#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
// For isascii
# define _XOPEN_SOURCE 700
#endif
#include "cmSystemTools.h" #include "cmSystemTools.h"
#include <cmext/algorithm> #include <cmext/algorithm>

10
Source/cmTimestamp.cxx
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@ -1,5 +1,15 @@
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */ file Copyright.txt or https://cmake.org/licensing for details. */
#if !defined(_WIN32) && !defined(__sun)
// POSIX APIs are needed
# define _POSIX_C_SOURCE 200809L
#endif
#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
// For isascii
# define _XOPEN_SOURCE 700
#endif
#include "cmTimestamp.h" #include "cmTimestamp.h"
#include <cstdlib> #include <cstdlib>

4
Utilities/std/CMakeLists.txt
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@ -1,4 +1,8 @@
# To ensure maximum portability across various compilers and platforms
# deactivate any compiler extensions
set(CMAKE_CXX_EXTENSIONS FALSE)
# source files for CMake std library # source files for CMake std library
set(SRCS cm/bits/string_view.cxx set(SRCS cm/bits/string_view.cxx
cm/memory cm/memory