Applying ./patches/010-remove-libdl-dep.patch using plaintext: 
patching file meson.build
The Meson build system
Version: 0.61.5
Source dir: /builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7
Build dir: /builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/openwrt-build
Build type: cross build
WARNING: You should add the boolean check kwarg to the run_command call.
         It currently defaults to false,
         but it will default to true in future releases of meson.
         See also: https://github.com/mesonbuild/meson/issues/9300
Project name: conmon
Project version: 2.1.7
C compiler for the host machine: arm-openwrt-linux-muslgnueabi-gcc (gcc 12.2.0 "arm-openwrt-linux-muslgnueabi-gcc (OpenWrt GCC 12.2.0 r22278-7dceef5ee5) 12.2.0")
C linker for the host machine: arm-openwrt-linux-muslgnueabi-gcc ld.bfd 2.40.0
C compiler for the build machine: gcc (gcc 8.3.0 "gcc (Debian 8.3.0-6) 8.3.0")
C linker for the build machine: gcc ld.bfd 2.31.1
Build machine cpu family: x86_64
Build machine cpu: x86_64
Host machine cpu family: arm
Host machine cpu: generic
Target machine cpu family: arm
Target machine cpu: generic
Program git found: YES (/builder/shared-workdir/build/sdk/staging_dir/host/bin/git)
../../../../build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/meson.build:34: WARNING: Consider using the built-in optimization level instead of using "-Os".
../../../../build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/meson.build:34: WARNING: Consider using the built-in warning_level option instead of using "-Wall".
../../../../build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/meson.build:34: WARNING: Consider using the built-in werror option instead of using "-Werror".
Found pkg-config: /builder/shared-workdir/build/sdk/staging_dir/host/bin/pkg-config (1.9.4)
Run-time dependency glib-2.0 found: YES 2.74.0
Found CMake: /builder/shared-workdir/build/sdk/staging_dir/host/bin/cmake (3.25.2)
Run-time dependency libseccomp found: NO (tried pkgconfig and cmake)

../../../../build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/meson.build:37:0: ERROR: Dependency "libseccomp" not found, tried pkgconfig and cmake

A full log can be found at /builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/openwrt-build/meson-logs/meson-log.txt
make[3]: *** [Makefile:48: /builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a5+vfpv4_musl_eabi/conmon-2.1.7/.configured_a17fb5ef857664f03cd0ce37cc5ea591] Error 1
time: package/feeds/packages/conmon/compile#2.71#0.37#10.58