meson setting proper kinker flag in static library - makefile

Question

in my project I need to compile a static library, the meson.build for it is the following
# libcustomLog library project.
#
project(
'customLog',
'c',
version : '1.0.0',
default_options : ['warning_level=3']
)
project_description = 'An example shared library'
project_headers = [
'libcustomLog.h'
]
project_source_files = [
'libcustomLog.c',
'libcustomLogGet.c',
'libcustomLogStripe.c'
]
build_args = [
]
# ===================================================================
# ======
# Target
# ======
public_headers = include_directories('../',
'../public'
)
build_args = [
'-DQNXNTO',
'-DQNX_VER=7',
'-DfwPLATFORM_NTO',
'-Wall',
'-Werror',
'-fsigned-char',
'-Wno-char-subscripts',
'-Wno-switch',
'-Wno-parentheses',
'-Wno-pointer-sign',
'-Wredundant-decls',
'-Wmissing-declarations',
'-Wmissing-prototypes',
'-O3',
'-fno-strict-aliasing',
'-std=gnu99',
'-g',
]
project_target = static_library(
meson.project_name(),
project_source_files,
install : true,
c_args : build_args,
gnu_symbol_visibility : 'hidden',
include_directories : public_headers,
)
# =======
# Project
# =======
# Make this library usable as a Meson subproject.
project_dep = declare_dependency(
include_directories: public_headers,
link_with : project_target
)
set_variable(meson.project_name() + '_dep', project_dep)
# Make this library usable from the system's
# package manager.
install_headers(project_headers, subdir : meson.project_name())
pkg_mod = import('pkgconfig')
pkg_mod.generate(
name : meson.project_name(),
filebase : meson.project_name(),
description : project_description,
subdirs : meson.project_name(),
libraries : project_target,
)
the compilation output is
$ meson compile --verbose
Found runner: ['/usr/bin/ninja']
ninja: Entering directory `.'
[1/4] /opt/qnx700/host/linux/x86_64/usr/bin/ntox86_64-gcc -Isrc/mon/libcustomLog.a.p -Isrc/mon -I../../src/mon -Isrc -I../../src -I../../src/public -fvisibility=hidden -fdiagnostics-color=always -pipe -D_FILE_OFFSET_BITS=64 -fPIC -DQNXNTO -DQNX_VER=7 -DfwPLATFORM_NTO -Wall -Werror -fsigned-char -Wno-char-subscripts -Wno-switch -Wno-parentheses -Wno-pointer-sign -Wredundant-decls -Wmissing-declarations -Wmissing-prototypes -O3 -fno-strict-aliasing -std=gnu99 -g -MD -MQ src/mon/libcustomLog.a.p/libcustomLogStripe.c.o -MF src/mon/libcustomLog.a.p/libcustomLogStripe.c.o.d -o src/mon/libcustomLog.a.p/libcustomLogStripe.c.o -c ../../src/mon/libcustomLogStripe.c
[2/4] /opt/qnx700/host/linux/x86_64/usr/bin/ntox86_64-gcc -Isrc/mon/libcustomLog.a.p -Isrc/mon -I../../src/mon -Isrc -I../../src -I../../src/public -fvisibility=hidden -fdiagnostics-color=always -pipe -D_FILE_OFFSET_BITS=64 -fPIC -DQNXNTO -DQNX_VER=7 -DfwPLATFORM_NTO -Wall -Werror -fsigned-char -Wno-char-subscripts -Wno-switch -Wno-parentheses -Wno-pointer-sign -Wredundant-decls -Wmissing-declarations -Wmissing-prototypes -O3 -fno-strict-aliasing -std=gnu99 -g -MD -MQ src/mon/libcustomLog.a.p/libcustomLogGetCode.c.o -MF src/mon/libcustomLog.a.p/libcustomLogGetCode.c.o.d -o src/mon/libcustomLog.a.p/libcustomLogGetCode.c.o -c ../../src/mon/libcustomLogGetCode.c
[3/4] /opt/qnx700/host/linux/x86_64/usr/bin/ntox86_64-gcc -Isrc/mon/libcustomLog.a.p -Isrc/mon -I../../src/mon -Isrc -I../../src -I../../src/public -fvisibility=hidden -fdiagnostics-color=always -pipe -D_FILE_OFFSET_BITS=64 -fPIC -DQNXNTO -DQNX_VER=7 -DfwPLATFORM_NTO -Wall -Werror -fsigned-char -Wno-char-subscripts -Wno-switch -Wno-parentheses -Wno-pointer-sign -Wredundant-decls -Wmissing-declarations -Wmissing-prototypes -O3 -fno-strict-aliasing -std=gnu99 -g -MD -MQ src/mon/libcustomLog.a.p/libcustomLog.c.o -MF src/mon/libcustomLog.a.p/libcustomLog.c.o.d -o src/mon/libcustomLog.a.p/libcustomLog.c.o -c ../../src/mon/libcustomLog.c
[4/4] rm -f src/mon/libcustomLog.a && /opt/qnx700/host/linux/x86_64/usr/bin/ntox86_64-ar csrD src/mon/libcustomLog.a src/mon/libcustomLog.a.p/libcustomLog.c.o src/mon/libcustomLog.a.p/libcustomLogGetCode.c.o src/mon/libcustomLog.a.p/libcustomLogStripe.c.o
now I would change the archive flags
...ntox86_64-ar csrD .....
in
...ntox86_64-ar -ru .....
how can I ovverride the default ones and add the "-ru"
I've tried to modify the meson.build
build_ar_args = [
'-ru'
]
project_target = static_library(
meson.project_name(),
project_source_files,
install : true,
c_args : build_args,
gnu_symbol_visibility : 'hidden',
include_directories : public_headers,
link_args: build_ar_args
)
but the output is the same.