[dpdk-stable] [PATCH v5 04/17] build: define _GNU_SOURCE globally

[Thomas Monjalon]

There was an intent to define _GNU_SOURCE globally,
but it was not set in pkg-config for external applications.

The internal definition in config/meson.build is kept,
and one is added in buildtools/pkg-config/meson.build for external apps.
All other specific definitions of _GNU_SOURCE are removed.

Fixes: 5d7b673d5fd6 ("mk: build with _GNU_SOURCE defined by default")
Fixes: 28188cee2aa0 ("build: enable BSD features visibility for FreeBSD")
Cc: stable at dpdk.org

Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
---
 app/test/meson.build                              | 2 --
 buildtools/pkg-config/meson.build                 | 1 +
 drivers/bus/fslmc/qbman/include/compat.h          | 3 ---
 drivers/common/dpaax/compat.h                     | 4 ----
 drivers/common/dpaax/meson.build                  | 1 -
 drivers/net/memif/rte_eth_memif.h                 | 4 ----
 drivers/net/mlx5/linux/mlx5_socket.c              | 4 ----
 examples/ip_pipeline/Makefile                     | 2 +-
 examples/performance-thread/l3fwd-thread/main.c   | 4 ----
 examples/performance-thread/pthread_shim/Makefile | 1 -
 examples/pipeline/Makefile                        | 2 +-
 examples/vhost_blk/vhost_blk.c                    | 4 ----
 12 files changed, 3 insertions(+), 29 deletions(-)

diff --git a/app/test/meson.build b/app/test/meson.build
index 099895fc87..76eaaea457 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -398,8 +398,6 @@ if cc.has_argument('-Wno-format-truncation')
     cflags += '-Wno-format-truncation'
 endif
 
-# specify -D_GNU_SOURCE unconditionally
-cflags += '-D_GNU_SOURCE'
 # Strict-aliasing rules are violated by uint8_t[] to context size casts.
 cflags += '-fno-strict-aliasing'
 
diff --git a/buildtools/pkg-config/meson.build b/buildtools/pkg-config/meson.build
index 39a8fd1c8e..d3f3edaa2f 100644
--- a/buildtools/pkg-config/meson.build
+++ b/buildtools/pkg-config/meson.build
@@ -3,6 +3,7 @@
 
 pkg = import('pkgconfig')
 pkg_extra_cflags = ['-include', 'rte_config.h'] + machine_args
+pkg_extra_cflags += '-D_GNU_SOURCE'
 if is_freebsd
 	pkg_extra_cflags += ['-D__BSD_VISIBLE']
 endif
diff --git a/drivers/bus/fslmc/qbman/include/compat.h b/drivers/bus/fslmc/qbman/include/compat.h
index 1ddd69e127..a4471a80af 100644
--- a/drivers/bus/fslmc/qbman/include/compat.h
+++ b/drivers/bus/fslmc/qbman/include/compat.h
@@ -8,9 +8,6 @@
 #ifndef HEADER_COMPAT_H
 #define HEADER_COMPAT_H
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
diff --git a/drivers/common/dpaax/compat.h b/drivers/common/dpaax/compat.h
index 1a5f36e99e..c69e76ab96 100644
--- a/drivers/common/dpaax/compat.h
+++ b/drivers/common/dpaax/compat.h
@@ -10,10 +10,6 @@
 #define __COMPAT_H
 
 #include <sched.h>
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
 #include <stdint.h>
 #include <stdlib.h>
 #include <stddef.h>
diff --git a/drivers/common/dpaax/meson.build b/drivers/common/dpaax/meson.build
index 4535482701..b7f177a62e 100644
--- a/drivers/common/dpaax/meson.build
+++ b/drivers/common/dpaax/meson.build
@@ -10,7 +10,6 @@ sources = files('dpaax_iova_table.c', 'dpaa_of.c', 'caamflib.c')
 
 includes += include_directories('caamflib')
 
-cflags += ['-D_GNU_SOURCE']
 if cc.has_argument('-Wno-cast-qual')
 	cflags += '-Wno-cast-qual'
 endif
diff --git a/drivers/net/memif/rte_eth_memif.h b/drivers/net/memif/rte_eth_memif.h
index 24321d3a39..2038bda742 100644
--- a/drivers/net/memif/rte_eth_memif.h
+++ b/drivers/net/memif/rte_eth_memif.h
@@ -5,10 +5,6 @@
 #ifndef _RTE_ETH_MEMIF_H_
 #define _RTE_ETH_MEMIF_H_
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif				/* GNU_SOURCE */
-
 #include <sys/queue.h>
 
 #include <ethdev_driver.h>
diff --git a/drivers/net/mlx5/linux/mlx5_socket.c b/drivers/net/mlx5/linux/mlx5_socket.c
index 1938453980..b1f41bc102 100644
--- a/drivers/net/mlx5/linux/mlx5_socket.c
+++ b/drivers/net/mlx5/linux/mlx5_socket.c
@@ -2,10 +2,6 @@
  * Copyright 2019 Mellanox Technologies, Ltd
  */
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/un.h>
diff --git a/examples/ip_pipeline/Makefile b/examples/ip_pipeline/Makefile
index 96f492a5ea..7933ad7519 100644
--- a/examples/ip_pipeline/Makefile
+++ b/examples/ip_pipeline/Makefile
@@ -47,7 +47,7 @@ $(error "Cannot generate statically-linked binaries with this version of pkg-con
 endif
 endif
 
-CFLAGS += -I. -DALLOW_EXPERIMENTAL_API -D_GNU_SOURCE
+CFLAGS += -I. -DALLOW_EXPERIMENTAL_API
 
 OBJS := $(patsubst %.c,build/%.o,$(SRCS-y))
 
diff --git a/examples/performance-thread/l3fwd-thread/main.c b/examples/performance-thread/l3fwd-thread/main.c
index 4d82fb82ef..10bd33d767 100644
--- a/examples/performance-thread/l3fwd-thread/main.c
+++ b/examples/performance-thread/l3fwd-thread/main.c
@@ -2,10 +2,6 @@
  * Copyright(c) 2010-2016 Intel Corporation
  */
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
diff --git a/examples/performance-thread/pthread_shim/Makefile b/examples/performance-thread/pthread_shim/Makefile
index 5aa401dc49..a1f4557cd4 100644
--- a/examples/performance-thread/pthread_shim/Makefile
+++ b/examples/performance-thread/pthread_shim/Makefile
@@ -18,7 +18,6 @@ endif
 endif
 
 CFLAGS += -DALLOW_EXPERIMENTAL_API
-CFLAGS += -D_GNU_SOURCE
 LDFLAGS += "-Wl,--copy-dt-needed-entries"
 
 # Build using pkg-config variables if possible
diff --git a/examples/pipeline/Makefile b/examples/pipeline/Makefile
index fcba51fd4d..92caf4aeb2 100644
--- a/examples/pipeline/Makefile
+++ b/examples/pipeline/Makefile
@@ -38,7 +38,7 @@ $(error "Cannot generate statically-linked binaries with this version of pkg-con
 endif
 endif
 
-CFLAGS += -I. -DALLOW_EXPERIMENTAL_API -D_GNU_SOURCE
+CFLAGS += -I. -DALLOW_EXPERIMENTAL_API
 
 OBJS := $(patsubst %.c,build/%.o,$(SRCS-y))
 
diff --git a/examples/vhost_blk/vhost_blk.c b/examples/vhost_blk/vhost_blk.c
index 7ea60863da..e9361267a6 100644
--- a/examples/vhost_blk/vhost_blk.c
+++ b/examples/vhost_blk/vhost_blk.c
@@ -2,12 +2,8 @@
  * Copyright(c) 2010-2019 Intel Corporation
  */
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
 #include <pthread.h>
 #include <sched.h>
-
 #include <stdint.h>
 #include <unistd.h>
 #include <stdbool.h>
-- 
2.30.1