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From: Thomas Monjalon <thomas@monjalon.net>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: dev@dpdk.org, ncopa@alpinelinux.org, stable@dpdk.org,
	Hemant Agrawal <hemant.agrawal@nxp.com>,
	Sachin Saxena <sachin.saxena@oss.nxp.com>,
	Jakub Grajciar <jgrajcia@cisco.com>,
	Matan Azrad <matan@nvidia.com>,
	Shahaf Shuler <shahafs@nvidia.com>,
	Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
	Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
	John McNamara <john.mcnamara@intel.com>,
	Maxime Coquelin <maxime.coquelin@redhat.com>,
	Chenbo Xia <chenbo.xia@intel.com>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Marcin Smoczynski <marcinx.smoczynski@intel.com>
Subject: Re: [dpdk-dev] [PATCH v5 04/17] build: define _GNU_SOURCE globally
Date: Sun, 28 Feb 2021 13:53:43 +0100	[thread overview]
Message-ID: <9174563.jNpO6MIbjI@thomas> (raw)
In-Reply-To: <2086874.LCvNQC0ieA@thomas>

26/02/2021 11:04, Thomas Monjalon:
> 26/02/2021 10:46, Bruce Richardson:
> > On Fri, Feb 26, 2021 at 10:40:32AM +0100, Thomas Monjalon wrote:
> > > 26/02/2021 10:08, Bruce Richardson:
> > > > On Thu, Feb 25, 2021 at 07:22:37PM +0100, Thomas Monjalon wrote:
> > > > > There was an intent to define _GNU_SOURCE globally,
> > > > > but it was not set in pkg-config for external applications.
> > > > > 
> > > > Is this something that we really want to do, to force all external apps to
> > > > use _GNU_SOURCE when compiling? Do some of our header files rely on
> > > > definitions only available with _GNU_SOURCE? If so, we should probably look
> > > > to remove that dependency rather than mandating the define.
> > > 
> > > From patch 5:
> > > In musl libc, cpu_set_t is defined only if _GNU_SOURCE is defined.
> > > 
> > > If we avoid mandating _GNU_SOURCE,
> > > we must #ifdef functions relying on rte_cpuset_t in the headers:
> > > 	- rte_lcore_cpuset
> > > 	- rte_thread_set_affinity
> > > 	- rte_thread_get_affinity
> > > 	- rte_telemetry_init (internal)
> > > Or a different trick in linux/include/rte_os.h could be:
> > > 	typedef void rte_cpuset_t;
> > > so it allows including files, but not using above functions of course.
> > > 
> > Can we just define _GNU_SOURCE in the header file with rte_cpuset_t?
> 
> That would be the simplest solution yes :)
> I don't really like defining such flag in a header file because
> it impacts all code coming after the include.
> It would mean all includes done after DPDK ones behave differently.
> 
> I vote for the trick:
> #ifdef _GNU_SOURCE
> 	typedef cpu_set_t rte_cpuset_t;
> #else
> 	typedef void rte_cpuset_t;
> #endif
> 
> Opinions?

I changed my mind, I think it is saner to not export functions
which use rte_cpuset_t, if the type is not defined.
The type definition is detected thanks to CPU_SETSIZE
and a new definition is used inside DPDK: RTE_HAS_CPUSET.
I think it is more elegant and easier to debug.
I am sending a v6.



  reply	other threads:[~2021-02-28 12:53 UTC|newest]

Thread overview: 140+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-13 17:06 [dpdk-dev] [PATCH v3 00/15] Build fixes for musl libc Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 01/15] app/testpmd: replace uint with unsigned int Natanael Copa
2019-03-26 16:59   ` Iremonger, Bernard
2019-03-26 16:59     ` Iremonger, Bernard
2019-03-30 22:17   ` Thomas Monjalon
2019-03-30 22:17     ` Thomas Monjalon
2019-07-04  9:20     ` Iremonger, Bernard
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 02/15] net/cxgbe: " Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 03/15] bus/pci: add fallback for out[lwb]_p for non GNU libc Natanael Copa
2019-03-30 22:22   ` Thomas Monjalon
2019-03-30 22:22     ` Thomas Monjalon
2019-07-04 12:16     ` Natanael Copa
2019-07-04 13:20       ` Thomas Monjalon
2019-07-04 15:30         ` Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 04/15] bus/pci: factor out various ifdefs in pci_uio_ioport_{read, write} Natanael Copa
2019-03-30 22:25   ` Thomas Monjalon
2019-03-30 22:25     ` Thomas Monjalon
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 05/15] bus/fslmc: fix compile error with musl libc Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 06/15] bus/fslmc: remove unused include of error.h Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 07/15] net/nfp: build fix for musl libc Natanael Copa
2019-03-21  9:48   ` Alejandro Lucero
2019-03-21  9:48     ` Alejandro Lucero
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 08/15] app/test: include fcntl.h due to use of O_RDONLY Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 09/15] app/test: fix setting of -D_GNU_SOURCE with meson Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 10/15] bus/dpaa: use warn(3) instead of error(3) to improve portability Natanael Copa
2019-03-30 22:33   ` Thomas Monjalon
2019-03-30 22:33     ` Thomas Monjalon
2020-07-10  5:13   ` Hemant Agrawal
2021-03-19  9:56     ` Thomas Monjalon
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 11/15] bus/dpaa: fix warning: "__WORDSIZE" is not defined, evaluates to 0 Natanael Copa
2019-03-30 22:36   ` Thomas Monjalon
2019-03-30 22:36     ` Thomas Monjalon
2020-07-10  5:10   ` Hemant Agrawal
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 12/15] crypto/dpaa2_sec: build fix for musl libc Natanael Copa
2020-07-10  5:11   ` Hemant Agrawal
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 13/15] crypto/dpaa2_sec: simplify pr_{debug, err, warn} macros Natanael Copa
2019-03-30 22:39   ` Thomas Monjalon
2019-03-30 22:39     ` Thomas Monjalon
2020-07-10  5:09   ` Hemant Agrawal
2020-07-10  5:11   ` Hemant Agrawal
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 14/15] net/netvsc: fix compile warning for fcntl.h include Natanael Copa
2019-03-13 17:06 ` [dpdk-dev] [PATCH v3 15/15] eal/linux: simplify debug message in sigbus_handler Natanael Copa
2019-03-14 17:09 ` [dpdk-dev] [PATCH v3 00/15] Build fixes for musl libc Sirvys, Andrius
2019-03-14 17:09   ` Sirvys, Andrius
2019-03-30 23:57 ` Thomas Monjalon
2019-03-30 23:57   ` Thomas Monjalon
2019-07-05  8:03   ` David Marchand
2020-11-05 21:17   ` [dpdk-dev] " Natanael Copa
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 1/8] app/testpmd: fix uint build error with " Natanael Copa
2020-11-06  9:22       ` [dpdk-dev] [PATCH v4 1/8] app/testpmd: fix uint build error withmusl libc Morten Brørup
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 2/8] net/cxgbe: fix uint build error with musl libc Natanael Copa
2020-11-06  9:24       ` [dpdk-dev] [PATCH v4 2/8] net/cxgbe: fix uint build error with musllibc Morten Brørup
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 3/8] bus/pci: add fallback for out* for non GNU libc Natanael Copa
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 4/8] bus/dpaa: use warn instead of error to improve portability Natanael Copa
2020-11-10 14:41       ` Fabrizio D'Angelo
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 5/8] bus/dpaa: fix detection of 64 bit arch Natanael Copa
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 6/8] common/dpaax: build fix for musl libc Natanael Copa
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 7/8] common/dpaax: simplify pr debug/err/warn macros Natanael Copa
2020-11-05 21:17     ` [dpdk-dev] [PATCH v4 8/8] eal: add missing include to fix build with musl libc Natanael Copa
2020-11-06 10:11     ` [dpdk-dev] Build fixes for " Thomas Monjalon
2020-11-06 10:44     ` David Marchand
2021-02-18 16:13       ` Thomas Monjalon
2021-02-20  8:51         ` Natanael Copa
2021-02-25  9:41           ` Thomas Monjalon
2021-02-25 18:22 ` [dpdk-dev] [PATCH v5 00/17] Alpine/musl build support Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 01/17] eal: fix comment of OS-specific header files Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 02/17] buildtools: fix build with busybox Thomas Monjalon
2021-02-26  9:11     ` Bruce Richardson
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 03/17] build: detect execinfo library on Linux Thomas Monjalon
2021-02-26  9:08     ` Bruce Richardson
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 04/17] build: define _GNU_SOURCE globally Thomas Monjalon
2021-02-26  9:08     ` Bruce Richardson
2021-02-26  9:40       ` Thomas Monjalon
2021-02-26  9:46         ` Bruce Richardson
2021-02-26 10:04           ` Thomas Monjalon
2021-02-28 12:53             ` Thomas Monjalon [this message]
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 05/17] eal/linux: fix build with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 06/17] drivers: fix header includes for musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 07/17] drivers: replace page size definitions with function Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 08/17] bus/pci: support I/O port operations with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 09/17] bus/dpaa: fix 64-bit arch detection Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 10/17] bus/dpaa: fix build with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 11/17] common/dpaax/caamflib: " Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 12/17] common/dpaax/caamflib: simplify log macros Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 13/17] net/cxgbe: remove use of uint type Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 14/17] net/igc: " Thomas Monjalon
2021-02-26  0:49     ` Wang, Haiyue
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 15/17] vdpa/mlx5: replace pthread functions unavailable in musl Thomas Monjalon
2021-03-01  7:30     ` Matan Azrad
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 16/17] app/testpmd: fix build with musl Thomas Monjalon
2021-02-25 18:22   ` [dpdk-dev] [PATCH v5 17/17] examples/bbdev: fix header include for musl Thomas Monjalon
2021-02-28 12:53 ` [dpdk-dev] [PATCH v6 00/17] Alpine/musl build support Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 01/17] eal: fix comment of OS-specific header files Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 02/17] buildtools: fix build with busybox Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 03/17] build: detect execinfo library on Linux Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 04/17] build: remove redundant _GNU_SOURCE definitions Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 05/17] eal: fix build with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 06/17] drivers: fix header includes for musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 07/17] drivers: replace page size definitions with function Thomas Monjalon
2021-03-01  9:41     ` Bruce Richardson
2021-03-01  9:53       ` Thomas Monjalon
2021-03-01 10:09         ` Bruce Richardson
2021-03-01 14:22     ` Andrew Boyer
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 08/17] bus/pci: support I/O port operations with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 09/17] bus/dpaa: fix 64-bit arch detection Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 10/17] bus/dpaa: fix build with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 11/17] common/dpaax/caamflib: " Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 12/17] common/dpaax/caamflib: simplify log macros Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 13/17] net/cxgbe: remove use of uint type Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 14/17] net/igc: " Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 15/17] vdpa/mlx5: replace pthread functions unavailable in musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 16/17] app/testpmd: fix build with musl Thomas Monjalon
2021-02-28 12:53   ` [dpdk-dev] [PATCH v6 17/17] examples/bbdev: fix header include for musl Thomas Monjalon
2021-03-17 22:42   ` [dpdk-dev] [PATCH v6 00/17] Alpine/musl build support Thomas Monjalon
2021-03-18  8:12     ` Andrew Rybchenko
2021-03-18  8:56     ` David Marchand
2021-03-19 14:57 ` [dpdk-dev] [PATCH v7 " Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 01/17] eal: fix comment of OS-specific header files Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 02/17] buildtools: fix build with busybox Thomas Monjalon
2021-03-22  8:52     ` Kinsella, Ray
2021-03-22  8:55       ` Thomas Monjalon
2021-03-22  9:01         ` Kinsella, Ray
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 03/17] build: detect execinfo library on Linux Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 04/17] build: remove redundant _GNU_SOURCE definitions Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 05/17] eal: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 06/17] drivers: replace page size definitions with function Thomas Monjalon
2021-03-19 15:47     ` McDaniel, Timothy
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 07/17] common/dpaax/caamflib: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 08/17] common/dpaax/caamflib: simplify log macros Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 09/17] bus/dpaa: fix 64-bit arch detection Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 10/17] bus/dpaa: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 11/17] bus/pci: support I/O port operations " Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 12/17] net/cxgbe: remove use of uint type Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 13/17] net/igc: " Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 14/17] vdpa/mlx5: replace pthread functions unavailable in musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 15/17] event/dlb: fix header includes for musl Thomas Monjalon
2021-03-19 15:47     ` McDaniel, Timothy
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 16/17] app/testpmd: fix build with musl Thomas Monjalon
2021-03-19 14:57   ` [dpdk-dev] [PATCH v7 17/17] examples/bbdev: fix header include for musl Thomas Monjalon
2021-03-23 10:02   ` [dpdk-dev] [PATCH v7 00/17] Alpine/musl build support Thomas Monjalon

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