From 0d314c4a04ef1b86a1ea66107b2d1a8d1bcd93b9 Mon Sep 17 00:00:00 2001
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From: Simon Ser <contact@emersion.fr>
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Date: Mon, 10 Jan 2022 14:51:55 +0100
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Subject: [PATCH] build: don't rely on implicit GNU extensions
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Currently libwayland assumes GNU extensions will be available, but
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doesn't define the C standard to use. Instead, let's unconditionally
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enable POSIX extensions, and enable GNU extensions on a case-by-case
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basis as needed.
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Signed-off-by: Simon Ser <contact@emersion.fr>
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Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
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[james.hilliard1@gmail.com: backport from upstream commit
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0d314c4a04ef1b86a1ea66107b2d1a8d1bcd93b9]
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---
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cursor/xcursor.c | 1 +
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meson.build | 10 ++++++++--
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tests/display-test.c | 1 +
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tests/event-loop-test.c | 1 +
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tests/fixed-test.c | 1 +
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5 files changed, 12 insertions(+), 2 deletions(-)
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diff --git a/cursor/xcursor.c b/cursor/xcursor.c
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index 0506680..188be7c 100644
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--- a/cursor/xcursor.c
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+++ b/cursor/xcursor.c
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@@ -23,6 +23,7 @@
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* SOFTWARE.
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*/
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+#define _GNU_SOURCE
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#include "xcursor.h"
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#include <stdio.h>
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#include <stdlib.h>
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diff --git a/meson.build b/meson.build
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index 07bbd29..cab267e 100644
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--- a/meson.build
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+++ b/meson.build
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@@ -14,6 +14,12 @@ config_h = configuration_data()
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config_h.set_quoted('PACKAGE', meson.project_name())
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config_h.set_quoted('PACKAGE_VERSION', meson.project_version())
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+cc_args = []
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+if host_machine.system() != 'freebsd'
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+ cc_args += ['-D_POSIX_C_SOURCE=200809L']
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+endif
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+add_project_arguments(cc_args, language: 'c')
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+
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compiler_flags = [
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'-Wno-unused-parameter',
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'-Wstrict-prototypes',
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@@ -79,7 +85,7 @@ if get_option('libraries')
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]
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foreach d: decls
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- if not cc.has_header_symbol(d['header'], d['symbol'], dependencies: epoll_dep)
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+ if not cc.has_header_symbol(d['header'], d['symbol'], dependencies: epoll_dep, args: cc_args)
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error('@0@ is needed to compile Wayland libraries'.format(d['symbol']))
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endif
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endforeach
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@@ -87,7 +93,7 @@ if get_option('libraries')
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rt_dep = []
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if not cc.has_function('clock_gettime', prefix: '#include <time.h>')
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rt_dep = cc.find_library('rt')
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- if not cc.has_function('clock_gettime', prefix: '#include <time.h>', dependencies: rt_dep)
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+ if not cc.has_function('clock_gettime', prefix: '#include <time.h>', dependencies: rt_dep, args: cc_args)
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error('clock_gettime not found')
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endif
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endif
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diff --git a/tests/display-test.c b/tests/display-test.c
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index 763adc9..a6f410d 100644
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--- a/tests/display-test.c
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+++ b/tests/display-test.c
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@@ -24,6 +24,7 @@
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* SOFTWARE.
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*/
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+#define _GNU_SOURCE
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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diff --git a/tests/event-loop-test.c b/tests/event-loop-test.c
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index 9d43c91..a51ba8f 100644
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--- a/tests/event-loop-test.c
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+++ b/tests/event-loop-test.c
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@@ -24,6 +24,7 @@
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* SOFTWARE.
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*/
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+#define _GNU_SOURCE
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#include <stdlib.h>
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#include <stdint.h>
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#include <assert.h>
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diff --git a/tests/fixed-test.c b/tests/fixed-test.c
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index 47a4dae..0b58797 100644
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--- a/tests/fixed-test.c
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+++ b/tests/fixed-test.c
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@@ -23,6 +23,7 @@
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* SOFTWARE.
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*/
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+#define _GNU_SOURCE
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#include <stdlib.h>
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#include <stdio.h>
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#include <assert.h>
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--
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2.25.1
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