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authorMarcin Smoczynski <marcinx.smoczynski@intel.com>2019-05-14 16:04:16 +0200
committerThomas Monjalon <thomas@monjalon.net>2019-06-26 16:50:33 +0200
commit28188cee2aa0b72d401d3e56942d0db9c7b9e654 (patch)
tree468edb60fdde6137df522a966cafb8791b9f3329
parentfabeca044ffc0233d7f072233001c19b300a0f81 (diff)
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build: enable BSD features visibility for FreeBSD
When a component uses either XOPEN_SOURCE or POSIX_C_SOURCE macro explicitly in its build recipe, it restricts visibility of a non POSIX features subset, such as IANA protocol numbers (IPPROTO_* macros). Non standard features are enabled by default for DPDK both for Linux thanks to _GNU_SOURCE and for FreeBSD thanks to __BSD_VISIBLE. However using XOPEN_SOURCE or POSIX_(C_)SOURCE in a component causes __BSD_VISIBLE to be defined to 0 for FreeBSD, causing different feature sets visibility for Linux and FreeBSD. It restricts from using IPPROTO macros in public headers, such as rte_ip.h, despite the fact they are already widely used in sources. Add __BSD_VISIBLE macro specified unconditionally for FreeBSD targets which enforces feature sets visibility unification between Linux and FreeBSD. Add single -D_GNU_SOURCE to config/meson.build as a project argument instead of adding separate directive for each project subtree. This patch solves the problem of build breaks for [1] on FreeBSD [2] following the discussion [3]. [1] https://mails.dpdk.org/archives/dev/2019-May/131885.html [2] http://mails.dpdk.org/archives/test-report/2019-May/082263.html [3] https://mails.dpdk.org/archives/dev/2019-May/132110.html Signed-off-by: Marcin Smoczynski <marcinx.smoczynski@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
-rw-r--r--app/meson.build3
-rw-r--r--config/meson.build8
-rw-r--r--drivers/meson.build3
-rw-r--r--examples/meson.build3
-rw-r--r--lib/meson.build3
-rw-r--r--meson.build6
-rw-r--r--mk/target/generic/rte.vars.mk5
7 files changed, 18 insertions, 13 deletions
diff --git a/app/meson.build b/app/meson.build
index 2b9fdef..b0e6afb 100644
--- a/app/meson.build
+++ b/app/meson.build
@@ -22,9 +22,6 @@ lib_execinfo = cc.find_library('execinfo', required: false)
default_cflags = machine_args
-# specify -D_GNU_SOURCE unconditionally
-default_cflags += '-D_GNU_SOURCE'
-
foreach app:apps
build = true
name = app
diff --git a/config/meson.build b/config/meson.build
index dbdfde6..2bafea5 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -188,3 +188,11 @@ install_headers('rte_config.h', subdir: get_option('include_subdir_arch'))
# enable VFIO only if it is linux OS
dpdk_conf.set('RTE_EAL_VFIO', is_linux)
+
+# specify -D_GNU_SOURCE unconditionally
+add_project_arguments('-D_GNU_SOURCE', language: 'c')
+
+# specify -D__BSD_VISIBLE for FreeBSD
+if is_freebsd
+ add_project_arguments('-D__BSD_VISIBLE', language: 'c')
+endif
diff --git a/drivers/meson.build b/drivers/meson.build
index 4c444f4..dc47b45 100644
--- a/drivers/meson.build
+++ b/drivers/meson.build
@@ -21,9 +21,6 @@ if cc.has_argument('-Wno-format-truncation')
default_cflags += '-Wno-format-truncation'
endif
-# specify -D_GNU_SOURCE unconditionally
-default_cflags += '-D_GNU_SOURCE'
-
foreach class:dpdk_driver_classes
drivers = []
std_deps = []
diff --git a/examples/meson.build b/examples/meson.build
index c695d52..87113bd 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -65,9 +65,6 @@ if cc.has_argument('-Wno-format-truncation')
default_cflags += '-Wno-format-truncation'
endif
-# specify -D_GNU_SOURCE unconditionally
-default_cflags += '-D_GNU_SOURCE'
-
foreach example: examples
name = example.split('/')[-1]
build = true
diff --git a/lib/meson.build b/lib/meson.build
index 992091a..9398a3a 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -41,9 +41,6 @@ endif
enabled_libs = [] # used to print summary at the end
-# -D_GNU_SOURCE unconditionally
-default_cflags += '-D_GNU_SOURCE'
-
foreach l:libraries
build = true
name = l
diff --git a/meson.build b/meson.build
index e771d34..76a14cc 100644
--- a/meson.build
+++ b/meson.build
@@ -63,6 +63,10 @@ configure_file(output: build_cfg,
dpdk_drivers = ['-Wl,--whole-archive'] + dpdk_drivers + ['-Wl,--no-whole-archive']
pkg = import('pkgconfig')
+pkg_extra_cflags = ['-include', 'rte_config.h'] + machine_args
+if is_freebsd
+ pkg_extra_cflags += ['-D__BSD_VISIBLE']
+endif
pkg.generate(name: meson.project_name(),
filebase: 'lib' + meson.project_name().to_lower(),
version: meson.project_version(),
@@ -75,7 +79,7 @@ pkg.generate(name: meson.project_name(),
Note that CFLAGS might contain an -march flag higher than typical baseline.
This is required for a number of static inline functions in the public headers.''',
subdirs: [get_option('include_subdir_arch'), '.'],
- extra_cflags: ['-include', 'rte_config.h'] + machine_args
+ extra_cflags: pkg_extra_cflags
)
# final output, list all the libs and drivers to be built
diff --git a/mk/target/generic/rte.vars.mk b/mk/target/generic/rte.vars.mk
index 25a578a..5f00a0b 100644
--- a/mk/target/generic/rte.vars.mk
+++ b/mk/target/generic/rte.vars.mk
@@ -111,6 +111,11 @@ endif
# always define _GNU_SOURCE
CFLAGS += -D_GNU_SOURCE
+# define __BSD_VISIBLE when building for FreeBSD
+ifeq ($(CONFIG_RTE_EXEC_ENV_FREEBSD),y)
+CFLAGS += -D__BSD_VISIBLE
+endif
+
export CFLAGS
export LDFLAGS