[PATCH 23.07 0/2] Minor meson build improvements

[PATCH 23.07 0/2] Minor meson build improvements

[Bruce Richardson]

While experimenting with "muon" [1] as a replacement for meson, the
muon tool flagged a few issues that could do with being cleaned up
in our meson.build files. While currently muon is not in a position
to configure a DPDK build, it's not that far away from being able to
do so, so may be worth keeping an eye on it future. (Most
interestingly, it does contain a "muon fmt" tool for automatically
formatting meson.build files).

Marking these as for next release as it's late in the 23.03 cycle
as there is no point in taking a risk on these patches for such
minor issues.

[1] https://github.com/annacrombie/muon

Bruce Richardson (2):
  build: fix case of project language name
  build: explicitly track fil paths in current directory

 app/test/meson.build              | 2 +-
 buildtools/pkg-config/meson.build | 2 +-
 meson.build                       | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

--
2.37.2

[PATCH 23.07 1/2] build: fix case of project language name

[Bruce Richardson]

According to the meson manual [1], the project language should be given
as 'c', rather than 'C' in the initial "project" function call. While
meson itself does not complain about this, the "muon" project, which
attempts to re-implement meson in C, does complain.

/home/bruce/dpdk/meson.build:4:17: error 'C' is not a valid language
  4 | project('DPDK', 'C',
                      ^

[1] https://mesonbuild.com/Reference-manual_functions.html#project

Fixes: a25a650be5f0 ("build: add infrastructure for meson and ninja builds")

Signed-off-by: Bruce richardson <bruce.richardson@intel.com>
---
 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index f91d652bc5..992ca91e88 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2017-2019 Intel Corporation
 
-project('DPDK', 'C',
+project('DPDK', 'c',
         # Get version number from file.
         # Fallback to "more" for Windows compatibility.
         version: run_command(find_program('cat', 'more'),
-- 
2.37.2

[PATCH 23.07 2/2] build: explicitly track file paths in current directory

[Bruce Richardson]

To ensure proper path tracking for files being used by the build, the
"files()" function should always be used. While meson currently assumes
that bare filenames passed to commands refer to paths in the current
directory, other reimplementations of meson, e.g. muon, require the
paths to be properly tracked. Therefore, for resiliency, ensure all
paths are specified using "files()".

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 app/test/meson.build              | 2 +-
 buildtools/pkg-config/meson.build | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/test/meson.build b/app/test/meson.build
index 2db5ccf4ff..94233fafca 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -470,7 +470,7 @@ dpdk_test = executable('dpdk-test',
              driver_install_path),
         install: true)

-has_hugepage = run_command(py3, 'has_hugepage.py', check: true).stdout().strip() != '0'
+has_hugepage = run_command(py3, files('has_hugepage.py'), check: true).stdout().strip() != '0'
 message('hugepage availability: @0@'.format(has_hugepage))

 # some perf tests (eg: memcpy perf autotest)take very long
diff --git a/buildtools/pkg-config/meson.build b/buildtools/pkg-config/meson.build
index 0412883c8f..b36add17e3 100644
--- a/buildtools/pkg-config/meson.build
+++ b/buildtools/pkg-config/meson.build
@@ -56,4 +56,4 @@ This is required for a number of static inline functions in the public headers.'

 # For static linking with dependencies as shared libraries,
 # the internal static libraries must be flagged explicitly.
-run_command(py3, 'set-static-linker-flags.py', check: true)
+run_command(py3, files('set-static-linker-flags.py'), check: true)
--
2.37.2

Re: [PATCH 23.07 1/2] build: fix case of project language name

[Tyler Retzlaff]

On Fri, Mar 10, 2023 at 11:11:37AM +0000, Bruce Richardson wrote:
> According to the meson manual [1], the project language should be given
> as 'c', rather than 'C' in the initial "project" function call. While
> meson itself does not complain about this, the "muon" project, which
> attempts to re-implement meson in C, does complain.
> 
> /home/bruce/dpdk/meson.build:4:17: error 'C' is not a valid language
>   4 | project('DPDK', 'C',
>                       ^
> 
> [1] https://mesonbuild.com/Reference-manual_functions.html#project
> 
> Fixes: a25a650be5f0 ("build: add infrastructure for meson and ninja builds")
> 
> Signed-off-by: Bruce richardson <bruce.richardson@intel.com>
> ---

Reviewed-by: Tyler Retzlaff <roretzla@linux.microsoft.com>

Re: [PATCH 23.07 2/2] build: explicitly track file paths in current directory

[Tyler Retzlaff]

On Fri, Mar 10, 2023 at 11:11:38AM +0000, Bruce Richardson wrote:
> To ensure proper path tracking for files being used by the build, the
> "files()" function should always be used. While meson currently assumes
> that bare filenames passed to commands refer to paths in the current
> directory, other reimplementations of meson, e.g. muon, require the
> paths to be properly tracked. Therefore, for resiliency, ensure all
> paths are specified using "files()".
> 
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

Reviewed-by: Tyler Retzlaff <roretzla@linux.microsoft.com>

Re: [PATCH 23.07 0/2] Minor meson build improvements

[Thomas Monjalon]

10/03/2023 12:11, Bruce Richardson:
> While experimenting with "muon" [1] as a replacement for meson, the
> muon tool flagged a few issues that could do with being cleaned up
> in our meson.build files. While currently muon is not in a position
> to configure a DPDK build, it's not that far away from being able to
> do so, so may be worth keeping an eye on it future. (Most
> interestingly, it does contain a "muon fmt" tool for automatically
> formatting meson.build files).
> 
> Marking these as for next release as it's late in the 23.03 cycle
> as there is no point in taking a risk on these patches for such
> minor issues.
> 
> [1] https://github.com/annacrombie/muon
> 
> Bruce Richardson (2):
>   build: fix case of project language name
>   build: explicitly track fil paths in current directory

Applied, thanks.