examples: fix pkg-config override

Move pkg-config override to beginning in the Makefile to allow
use PKGCONF variable to detect the libdpdk availability.

Fixes: fda34680eb9a ("examples: remove lega

examples: fix pkg-config override

Move pkg-config override to beginning in the Makefile to allow
use PKGCONF variable to detect the libdpdk availability.

Fixes: fda34680eb9a ("examples: remove legacy sections of makefiles")
Cc: [email protected]

Signed-off-by: Jerin Jacob <[email protected]>
Acked-by: Bruce Richardson <[email protected]>

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examples: warn about broken pkg-config

Since the examples are designed to be built by end-users using Make, we
can detect and warn about broken pkg-config on the user's system as part
of the build p

examples: warn about broken pkg-config

Since the examples are designed to be built by end-users using Make, we
can detect and warn about broken pkg-config on the user's system as part
of the build process.

Signed-off-by: Bruce Richardson <[email protected]>

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examples/ntb: fix clean target

When introducing this example, the cleanup from commit 7e9562a107f1
("examples: fix make clean when using pkg-config") was missed.

Fixes: c5eebf85badc ("examples/ntb:

examples/ntb: fix clean target

When introducing this example, the cleanup from commit 7e9562a107f1
("examples: fix make clean when using pkg-config") was missed.

Fixes: c5eebf85badc ("examples/ntb: add example for NTB")
Cc: [email protected]

Signed-off-by: David Marchand <[email protected]>
Acked-by: Bruce Richardson <[email protected]>
Acked-by: Xiaoyun Li <[email protected]>

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examples: remove legacy sections of makefiles

The example app makefiles contained sections using the legacy method of
compiling with make. These are no longer needed, and are removed,
leaving only t

examples: remove legacy sections of makefiles

The example app makefiles contained sections using the legacy method of
compiling with make. These are no longer needed, and are removed,
leaving only the section that uses pkg-config for the make build.

Signed-off-by: Ciara Power <[email protected]>
Acked-by: Nicolas Chautru <[email protected]>

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build/pkg-config: improve static linking flags

Rather than setting -Bstatic in the linker flags when doing a static link,
and then having to explicitly set -Bdynamic again afterwards, we can update

build/pkg-config: improve static linking flags

Rather than setting -Bstatic in the linker flags when doing a static link,
and then having to explicitly set -Bdynamic again afterwards, we can update
the pkg-config file to use -l:libfoo.a syntax to explicitly refer to the
static library in question. Since this syntax is not supported by meson's
pkg-config module directly, we can post-process the .pc files instead to
adjust them.

Once done, we can simplify the examples' makefiles and the docs by removing
the explicit static flag.

Signed-off-by: Bruce Richardson <[email protected]>
Acked-by: Luca Boccassi <[email protected]>
Acked-by: Sunil Pai G <[email protected]>
Signed-off-by: Thomas Monjalon <[email protected]>

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ethdev: add tracepoints

Add tracepoints at important and mandatory APIs for tracing support.

Signed-off-by: Sunil Kumar Kori <[email protected]>
Acked-by: David Marchand <[email protected]>

examples: hide error for missing pkg-config path flag

Some versions of pkg-config don't support the --path flag, which is not a
fatal error when building the apps. Without the flag, the makefile jus

examples: hide error for missing pkg-config path flag

Some versions of pkg-config don't support the --path flag, which is not a
fatal error when building the apps. Without the flag, the makefile just
cannot track the .pc file of DPDK as a dependency of the build. Therefore,
we can ignore the error and suppress it by redirecting to /dev/null the
stderr from that call to pkg-config.

Fixes: 22119c4591a0 ("examples: use pkg-config in makefiles")
Cc: [email protected]

Signed-off-by: Bruce Richardson <[email protected]>
Tested-by: Ferruh Yigit <[email protected]>

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examples: fix build with old pkg-config

Not all versions of pkg-config in distros have support for the
--define-prefix flag [1], causing errors when building examples manually or
with test-meson-bui

examples: fix build with old pkg-config

Not all versions of pkg-config in distros have support for the
--define-prefix flag [1], causing errors when building examples manually or
with test-meson-builds.sh script [2].

For the former case, we need to remove the hard-coded use of the flag in
the Makefiles.

For the latter case, the flag is necessary for builds to succeed, so we
skip the tests when it's not present, passing it as part of the pkg-config
command if it is supported.

[1]
CentOS Linux release 7.7.1908 (Core)
pkg-config version 0.27.1

[2]
## Building cmdline
Unknown option --define-prefix
gmake: Entering directory
`...ild-x86-default/install-root/usr/local/share/dpdk/examples/cmdline'
rm -f build/cmdline build/cmdline-static build/cmdline-shared
test -d build && rmdir -p build || true
Unknown option --define-prefix
Unknown option --define-prefix
gcc -O3 main.c commands.c parse_obj_list.c -o build/cmdline-shared
main.c:14:28: fatal error: cmdline_rdline.h: No such file or directory

Fixes: ca9268529d2b ("examples: support relocated DPDK install")
Fixes: 7f80a2102bbb ("devtools: test pkg-config file")
Cc: [email protected]

Reported-by: Ferruh Yigit <[email protected]>
Signed-off-by: Bruce Richardson <[email protected]>
Tested-by: Ferruh Yigit <[email protected]>

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examples/ntb: add example for NTB

Enable an example for rawdev ntb. Support interactive mode to send
file on one host and receive file from another host. The command line
would be 'send [filepath]'

examples/ntb: add example for NTB

Enable an example for rawdev ntb. Support interactive mode to send
file on one host and receive file from another host. The command line
would be 'send [filepath]' and 'receive [filepath]'.

But since the FIFO is not enabled right now, use rte_memcpy as the enqueue
and dequeue functions and only support transmitting file no more than 4M.

Signed-off-by: Xiaoyun Li <[email protected]>
Acked-by: Jingjing Wu <[email protected]>
Reviewed-by: Xiaolong Ye <[email protected]>

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