The method to fetch, sort and read the last entry of a list to figure
out the total number of NUMA nodes in the system fails with 10 or more
nodes. The reason being the usage of string compare while sorting, hence
node 'node10' will be sorted before 'node2'.
Solve this by sorting the list based on integer comparison of the
numerical part of the node name.
Before this change on a system with 16 NUMA nodes,
EAL: Detected CPU lcores: 128
EAL: Detected NUMA nodes: 10
EAL: Static memory layout is selected, amount of reserved memory can
be adjusted with -m or --socket-mem
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
With this change on the same system,
EAL: Detected CPU lcores: 128
EAL: Detected NUMA nodes: 16
EAL: Static memory layout is selected, amount of reserved memory can
be adjusted with -m or --socket-mem
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
Fixes: 8ef09fdc50 ("build: add optional NUMA and CPU counts detection")
Cc: stable@dpdk.org
Signed-off-by: Peng Zhang <peng.zhang@corigine.com>
Signed-off-by: Chaoyong He <chaoyong.he@corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@corigine.com>
To allow other projects to easily use DPDK as a subproject, add in the
necessary dependency definitions. Slightly different definitions are
necessary for static and shared builds, since for shared builds the
drivers should not be linked in, and the internal meson dependency
objects are more complete.
To use DPDK as a subproject fallback i.e. use installed DPDK if present,
otherwise the shipped one, the following meson statement can be used:
libdpdk = dependency('libdpdk', fallback: ['dpdk', 'dpdk_dep'])
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Ben Magistro <koncept1@gmail.com>
Tested-by: Ben Magistro <koncept1@gmail.com>
When building with Meson 0.61.1 on FreeBSD some archives become
corrupted. This can be avoided by using 'llvm-ar' instead of 'ar'.
Cc: stable@dpdk.org
Signed-off-by: Karl Bonde Torp <k.torp@samsung.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Simply compiling a C header with a C++ compiler is not enough to flag
missing 'extern "C"' guards. To catch missing guards, we can just use a
simple grep for the 'extern "C"' part, and error out if any files have a
miss.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
With a one-line change to the lib meson.build file we can add the SDK
headers to the list of files to be checked using the chkincs binary.
Unfortunately, many of those SDK header depend upon headers in the PCI
and vdev bus drivers, so we need to update chkincs build to ensure those
dependencies are added. We also need to allow internal APIs to be
present in these SDK headers.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
The chkincs binary does not actually call any functions in either libs
or drivers, so we can simplify the linkage of it to just using shared
linkage of the libraries (via meson dependencies). This means a slightly
faster link time as well as making the chkincs binary much, much
smaller.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Meson 0.61.1 is giving warnings that the calls to run_command do not
always explicitly specify if the result is to be checked or not, i.e.
there is a missing "check" parameter. This is because the default
behaviour without the parameter is due to change in the future.
We can fix these warnings by explicitly adding into each call whether
the result should be checked by meson or not. This patch therefore
adds in "check: false" to each run_command call where the result is
being checked by the DPDK meson.build code afterwards, and adds in
"check: true" to any calls where the result is currently unchecked.
Bugzilla ID: 921
Cc: stable@dpdk.org
Reported-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Jerin Jacob <jerinj@marvell.com>
Python 3.5 subprocess.run() does not have a capture_output
parameter (it is present only in 3.7 and up).
Capture output by using subprocess.PIPE for stdout instead.
Fixes: bb9cd91095 ("buildtools: make AVX512 check portable")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
When using Python 3.10, this warning appears:
DeprecationWarning: The distutils package is deprecated
and slated for removal in Python 3.12.
Use setuptools or check PEP 632 for potential alternatives
The PEP 632 recommends replacing "distutils.version" with "packaging".
Bugzilla ID: 914
Cc: stable@dpdk.org
Reported-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Tested-by: Jerin Jacob <jerinj@marvell.com>
buildtools/binutils-avx512-check.sh was Unix-only
and could not be used in cross builds:
1) written in shell;
2) used the assembler binary that may be missing,
e.g. when building on Windows with LLVM;
3) located the assembler as ${AS:-as} and referenced objdump,
but those binaries may be overridden via --cross-file.
Rewrite the script in Python.
Use the C compiler for the check.
Locate objdump and the C compiler using Meson.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Meson 0.60 switched the format of uninstalled static libraries
to thin archives, that is, they contain only paths to object files,
not the files themselves. Files cannot be extracted in this case,
resulting in build errors:
ar: `x' cannot be used on thin archives.
Handle thin archives when invoking pmdinfogen by directly using the
files referenced in the archive, when they already exist, and extracting
them if not.
Bugzilla ID: 836
Fixes: e6e9730c70 ("buildtools: support object file extraction for Windows")
Cc: stable@dpdk.org
Reported-by: Michal Berger <michallinuxstuff@gmail.com>
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Independent header compilation test (chkincs) was disabled on Windows.
The comment stated that the shebang line in the generator script was not
working. Meson 0.57.0, currently recommended for Windows, successfully
parses that line and invokes the script. Remove the OS restriction
as its reason no longer applies.
Fixes: 05050ac4ce ("build: add header includes check")
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Add an option to automatically discover the host's NUMA and CPU counts
and use those values for a non cross-build.
Give users the option to override the per-arch default values or values
from cross files by specifying them on the command line with -Dmax_lcores
and -Dmax_numa_nodes.
Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: David Christensen <drc@linux.vnet.ibm.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
The symlink-drivers-solibs.sh script was disabled as part of 'install'
for Windows because there is no support for shell scripts. However,
this means that driver related DLLs are not present in the installed
'libdir' directory. Add a python script to perform the install and use
it for Windows if the version of meson supports using an external
program with add_install_script (>= 0.55.0).
On Windows, symbolic links are somewhat problematic since the
SeCreateSymbolicLinkPrivilege is required to be able to create them.
In addition, different cross-compilation environments handle symbolic
links differently, e.g. WSL, Msys2, Cygwin. Rather than trying to
distinguish these scenarios, the python script will perform a file copy
for any Windows specific names.
On Windows, the shared library outputs have different names depending
upon which toolset has been used to build them. The script currently
handles Clang and GCC.
On Linux the functionality is unchanged, but could be replaced with the
python script once the required minimum version of meson is >= 0.55.0.
Cc: stable@dpdk.org
Signed-off-by: Nick Connolly <nick.connolly@mayadata.io>
Tested-by: Narcisa Vasile <navasile@linux.microsoft.com>
Acked-by: Narcisa Vasile <navasile@linux.microsoft.com>
Reviewed-by: Bruce Richardson <bruce.richardson@intel.com>
The `doc` target used `echo` as its command.
On Windows, `echo` is always a shell built-in, there is no binary.
Starting from meson 0.58, `run_target()` always searches for command
executable and no longer accepts `echo` as such on Windows.
Replace plain `echo` with a Python one-liner.
Fixes: d02a2dab2d ("doc: support building HTML guides with meson")
Cc: stable@dpdk.org
Reported-by: Rob Scheepens <rob.scheepens@nutanix.com>
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
Size of string constant symbol may be larger than its length
measured up to NUL terminator. In this case pmdinfogen included padding
bytes after NUL terminator in generated source, yielding incorrect code.
Always trim string data to NUL terminator while reading ELF.
It was already done for COFF because there's no symbol size.
Bugzilla ID: 720
Fixes: f0f93a7adf ("buildtools: use Python pmdinfogen")
Cc: stable@dpdk.org
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Hook check-symbol-maps.sh in the symbol check when in developer mode to
help developers catch issues before submitting their changes.
Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Ray Kinsella <mdr@ashroe.eu>
If no enable_drivers option is passed, the default is to build
the drivers list by calling list-dir-globs.py.
But if no Python interpreter is installed, no error is reported
and all drivers end up being disabled.
Example on a minimal FreeBSD VM:
dpdk@freebsd:~/dpdk $ meson setup build
...
drivers:
common/cpt: not in enabled drivers build config
common/dpaax: not in enabled drivers build config
common/iavf: not in enabled drivers build config
common/mvep: not in enabled drivers build config
common/octeontx: not in enabled drivers build config
common/octeontx2: not in enabled drivers build config
bus/dpaa: not in enabled drivers build config
bus/fslmc: not in enabled drivers build config
...
dpdk@freebsd:~/dpdk $ cd drivers/
dpdk@freebsd:~/dpdk/drivers $ ~/dpdk/buildtools/list-dir-globs.py */*
env: python3: No such file or directory
Rely on meson internal interpreter.
Check return code when calling this script.
Fixes: ab9407c3ad ("build: allow using wildcards to disable drivers")
Fixes: 2e33309ebe ("config: enable/disable drivers in Arm builds")
Cc: stable@dpdk.org
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Switch from using tabs to 4 spaces for meson.build indentation, for the
basic infrastructure and tooling files, as well as doc and kernel
directories.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
buildtools/list-dir-globs.py printed paths with OS directory separator,
which is "/" on Unices and "\" on Windows, while Meson code always
expected "/". This resulted in all drivers being disabled on Windows.
Replace "\" with "/" in script output. Forward slash is a valid,
although non-default, separator on Windows, so no paths can be broken
by this substitution.
Fixes: ab9407c3ad ("build: allow using wildcards to disable drivers")
Cc: stable@dpdk.org
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Add support for enabling or disabling drivers for Arm cross build. Do
not implement any enable/disable lists yet.
Enabling drivers is useful when building for an SoC where we only want
to build a few drivers. That way the list won't be too long.
Similarly, disabling drivers is useful when we want to disable only a
few drivers.
Both of these are advantageous mainly in aarch64 -> aarch64 (or arch ->
same arch) builds, where the build machine may have the required driver
dependencies, yet we don't want to build drivers for a specific SoC.
If enable_drivers is a non-empty list, build only those drivers,
otherwise build all drivers and add them to enable_drivers. If
disable_drivers is non-empty list, build all drivers specified in
enable_drivers except those in disable_drivers.
There are two drivers, bus/pci and bus/vdev, which break the build if
not enabled. Address this by always enabling these if the user disables
them or doesn't specify in their allowlist.
Also remove the old Makefile arm configuration options which don't do
anything in Meson.
Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Rather than have two files that keeps getting out of sync, let's
annotate the version.map to generate the Windows export file.
Some mlx5 symbols (haswell_broadwell_cpu, mlx5_glue, mlx5_os_*) were
only exported for Windows.
All of them are available and used by Linux too, so this patch adds
them in version.map.
Note: Existing version.map annotation achieved with:
$ for dir in lib/librte_eal drivers/common/mlx5; do
./buildtools/map-list-symbol.sh $dir/*.map |
while read file version sym; do
! git grep -qw $sym $dir/*.def || continue;
sed -i -e "s/$sym;/$sym; # WINDOWS_NO_EXPORT/" $dir/*.map;
done;
done
Signed-off-by: David Marchand <david.marchand@redhat.com>
Tested-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
If using busybox for mktemp and awk (as in Alpine),
some bugs prevent the script from running:
1/ It seems busybox mktemp requires the pattern to have at least
6 X and no other suffix.
The same has been fixed for other scripts in the past:
commit 3771edc354 ("buildtools: fix build for some mktemp")
2/ It seems busybox awk does not accept the regex ^.*{
except if the opening curly brace is escaped.
Fixes: 4c82473412 ("build: add internal tag check")
Fixes: 68b1f1cda5 ("build: check AVX512 rather than binutils version")
Fixes: 3290ac14eb ("buildtools: detect discrepancies for experimental symbols")
Cc: stable@dpdk.org
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>
There is no need for the direct inclusion of the generic/ header [1]
now that we don't use the rte_atomic API anymore.
It was the last case of direct inclusion of the generic/ headers,
so the flag -Wno-unused-function can be dropped.
1: https://git.dpdk.org/dpdk/commit/?id=3eb860b08eb7
Fixes: e41d27a68d ("mbuf: remove atomic reference counters")
Cc: stable@dpdk.org
Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
To verify that all DPDK headers are ok for inclusion directly in a C file,
and are not missing any other pre-requisite headers, we can auto-generate
for each header an empty C file that includes that header. Compiling these
files will throw errors if any header has unmet dependencies.
For some libraries, there may be some header files which are not for direct
inclusion, but rather are to be included via other header files. To allow
later checking of these files for missing includes, we separate out the
indirect include files from the direct ones.
To ensure ongoing compliance, we enable this build test as part of the
default x86 build in "test-meson-builds.sh".
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
"llvm-ar xv lib.a" from LLVM 8 doesn't print extracted object file
names. The effect of "v" is not formally specified either.
Use "llvm-ar t" to get archive member names.
Reported-by: Xueming Zhang <xuemingx.zhang@intel.com>
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Use current build directory as base for temporary directories,
so that all build files are isolated there.
Fixes: e6e9730c70 ("buildtools: support object file extraction for Windows")
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Python 3.5 subprocess.run() has no capture_output parameter.
Use subprocess.PIPE available in all versions.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
clang archiver tool is llvm-ar on Windows and ar on other platforms.
MinGW always uses ar. Replace shell script (Unix-only) that calls ar
with a Python script (OS-independent) that calls an appropriate archiver
tool selected at configuration time. Move the logic not to generate
empty sources into pmdinfogen.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Common Object File Format (COFF) is used on Windows in place of ELF.
Add COFF parser to pmdinfogen. Also add an argument to specify input
file format, which is selected at configure time based on the target.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Delete the files no longer used in build process.
Add myself as maintainer of new implementation.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Use the same interpreter to run pmdinfogen as for other build scripts.
Adjust wrapper script accordingly and also don't suppress stderr from ar
and pmdinfogen. Add configure-time check for elftools Python module for
Unix hosts.
Add pyelftools to CI configuration and build requirements for Linux and
FreeBSD. Windows targets are not currently using pmdinfogen.
Suppress ABI warnings about generated PMD information strings.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Jie Zhou <jizh@microsoft.com>
Using a high-level, interpreted language simplifies maintenance and
build process. Furthermore, ELF handling is delegated to pyelftools
package. Original logic is kept, the copyright recognizes that.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Jie Zhou <jizh@microsoft.com>
The --export-dynamic linker option is only applicable to ELF.
On Windows, where COFF is used, it causes warnings:
x86_64-w64-mingw32-ld: warning: --export-dynamic is not supported
for PE+ targets, did you mean --export-all-symbols? (MinGW)
LINK : warning LNK4044: unrecognized option '/-export-dynamic';
ignored (clang)
Don't add --export-dynamic on Windows anywhere.
Fixes: b031e13d7f ("build: fix plugin load on static build")
Cc: stable@dpdk.org
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Ranjit Menon <ranjit.menon@intel.com>
When dpdk is compiled as static libraries, it is not possible
to load a plugin from an application. We get the following error:
EAL: librte_pmd_xxxx.so: undefined symbol: per_lcore__rte_errno
This happens because the dpdk symbols are not exported. Add them to the
dynamic symbol table by using '-Wl,--export-dynamic'. This option was
previously present when compiled with Makefiles, it was introduced in
commit f9a08f6502 ("eal: add support for shared object drivers")
Also add it to the pkg-config file.
Fixes: 16ade738fd ("app/testpmd: build with meson")
Fixes: 89f0711f9d ("examples: build some samples with meson")
Cc: stable@dpdk.org
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Bruce Richardson <bruce.richardson@intel.com>
Error observed with gcc 11 under development
gcc (GCC) 11.0.0 20200920 (experimental)
build error:
In file included from ../buildtools/pmdinfogen/pmdinfogen.c:17:
../buildtools/pmdinfogen/pmdinfogen.c: In function ‘parse_elf’:
../buildtools/pmdinfogen/pmdinfogen.h:78:1:
warning: this ‘else’ clause does not guard...
[-Wmisleading-indentation]
78 | else \
| ^~~~
../buildtools/pmdinfogen/pmdinfogen.h:83:35:
note: in expansion of macro ‘CONVERT_NATIVE’
83 | #define TO_NATIVE(fend, width, x) CONVERT_NATIVE(fend, width, x)
| ^~~~~~~~~~~~~~
../buildtools/pmdinfogen/pmdinfogen.c:152:28:
note: in expansion of macro ‘TO_NATIVE’
152 | hdr->e_type = TO_NATIVE(endian, 16, hdr->e_type);
| ^~~~~~~~~
../buildtools/pmdinfogen/pmdinfogen.h:80:9:
note: ...this statement, but the latter is misleadingly indented
as if it were guarded by the ‘else’
80 | ___x; \
| ^~~~
Fixes: 98b0fdb0ff ("pmdinfogen: add buildtools and pmdinfogen utility")
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
When the --werror meson build option is set, we can pass the "-W",
warning-as-errors, flag to sphinx to get the same behaviour for doc
building as for building the rest of DPDK. This can help catch
documentation errors sooner in the development process.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Changed scripts to explicitly use Python 3 only, to avoid
maintaining Python 2.
Removed deprecation notices.
Signed-off-by: Louise Kilheeney <louise.kilheeney@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Robin Jarry <robin.jarry@6wind.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
To see only errors and warnings from the doc builds, we can send the
standard output text to a logfile and have only the stderr messages
printed. This is similar to what is done for the API documentation.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Make is no longer supported for compiling DPDK, scripts used with make
are no longer needed.
Signed-off-by: Ciara Power <ciara.power@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
A decision was made [1] to no longer support Make in DPDK, this patch
removes all Makefiles that do not make use of pkg-config, along with
the mk directory previously used by make.
[1] https://mails.dpdk.org/archives/dev/2020-April/162839.html
Signed-off-by: Ciara Power <ciara.power@intel.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
When building the DPDK guide documents, the DPDK version information was
pulled using "make showversion", which meant there was a dependency on
the DPDK make-based build system. Change this to have the version info
passed in from meson itself.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
When sphinx-build reports its version information to stderr rather
than stdout, the wrapper script misses it, and then fails to run.
We can fix this by redirecting stderr to stdout for the version
query call.
Fixes: f5ab2074cf ("doc: rebuild with meson whenever a file changes")
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Ciara Power <ciara.power@intel.com>
Tested-by: David Marchand <david.marchand@redhat.com>
Having a special versioning for experimental/internal libraries put a
additional maintenance cost while this status is already announced in
MAINTAINERS and the library headers/documentation.
Following discussions and vote at 05/20 TB meeting [1], use a single
versioning for all libraries in DPDK.
Note: for the ABI check, an exception [2] had been added when tweaking
this special versioning [3].
Prefer explicit libabigail rules (which will be dropped in 20.11).
1: https://mails.dpdk.org/archives/dev/2020-May/168450.html
2: https://git.dpdk.org/dpdk/commit/?id=23d7ad5db41c
3: https://git.dpdk.org/dpdk/commit/?id=ec2b8cd7ed69
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Rather than checking the binutils version number, which can lead to
unnecessary disabling of AVX512 if fixes have been backported to distro
versions, we can instead check the output of "as" from binutils to see if
it is correct.
The check in the script uses the minimal assembly reproduction code posted
to the public bug tracker for gcc/binutils for those issues [1]. If the
binutils bug is present, the instruction parameters - specifically the
displacement parameter - will be different in the disassembled output
compared to the input. Therefore the check involves assembling a single
instruction and disassembling it again, checking that the two match.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Harry van Haaren <harry.van.haaren@intel.com>
Add the --as-needed linker flag to the DPDK library list in the pkg-config
file so as to prevent overlinking. Without this flag, when linking
statically using flags from $(pkg-config --static --libs libdpdk), all DPDK
drivers and libs were statically linked in, but the binary was also
requiring all the shared versions be present to run.
The real root-cause of this issue is that the DPDK libraries need to be
duplicated in the linker command when doing static linking, due to the
behaviour of pkg-config, but since that behaviour cannot be easily changed,
this is a simple workaround to avoid problems.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Acked-by: Sunil Pai G <sunil.pai.g@intel.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
