docker pull elonh/opde:sdk
docker run -it --rm elonh/opde:sdk zsh # or bash
export http_proxy= # [your proxy], do not use localhost or 127.0.0.1
export https_proxy=$http_proxy
opde feeds && opde config -a
make package/feeds/packages/flashrom/compile -j$(nproc) || make package/feeds/packages/flashrom/compile V=s

Applying ./patches/010-bitbang.patch using plaintext: 
patching file meson.build
patching file meson_options.txt

Applying ./patches/020-raw-access.patch using plaintext: 
patching file meson.build

Applying ./patches/030-ppc.patch using plaintext: 
patching file hwaccess.c

Applying ./patches/040-uclibc.patch using plaintext: 
patching file meson.build
The Meson build system
Version: 0.57.2
Source dir: /openwrt/build_dir/target-aarch64_cortex-a72_musl/flashrom-spi/flashrom-v1.2
Build dir: /openwrt/build_dir/target-aarch64_cortex-a72_musl/flashrom-spi/flashrom-v1.2/openwrt-build
Build type: cross build
WARNING: Unknown options: "build.libdir, build.prefix, build.sbindir"
The value of new options can be set with:
meson setup <builddir> --reconfigure -Dnew_option=new_value ...
Project name: flashromutils
Project version: v1.2
C compiler for the host machine: ccache_cc (gcc 8.4.0 "aarch64-openwrt-linux-musl-gcc (OpenWrt GCC 8.4.0 r0-af265d3) 8.4.0")
C linker for the host machine: ccache_cc ld.bfd 2.34
C compiler for the build machine: ccache gcc (gcc 9.3.0 "gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0")
C linker for the build machine: gcc ld.bfd 2.34
Build machine cpu family: x86_64
Build machine cpu: x86_64
Host machine cpu family: aarch64
Host machine cpu: generic
Target machine cpu family: aarch64
Target machine cpu: generic
Compiler for C supports arguments -Wwrite-strings: YES 
Compiler for C supports arguments -Wno-unused-parameter: YES 
Compiler for C supports arguments -Wno-address-of-packed-member: NO 
Compiler for C supports arguments -Wno-enum-conversion: NO 
Compiler for C supports arguments -Wno-missing-braces: YES 
Checking for function "clock_gettime" : YES 
Checking for function "strnlen" : YES 
Check usable header "sys/utsname.h" : YES 
Build targets in project: 3


ERROR: Could not detect Ninja v1.8.2 or newer

A full log can be found at /openwrt/build_dir/target-aarch64_cortex-a72_musl/flashrom-spi/flashrom-v1.2/openwrt-build/meson-logs/meson-log.txt
make[3]: *** [Makefile:106: /openwrt/build_dir/target-aarch64_cortex-a72_musl/flashrom-spi/flashrom-v1.2/.configured_68b329da9893e34099c7d8ad5cb9c940] Error 1