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
DEPRECATION: The [paths] section is deprecated, use the [built-in options] section instead.
DEPRECATION: The [paths] section is deprecated, use the [built-in options] section instead.
Using 'PKG_CONFIG_PATH' from environment with value: '/builder/shared-workdir/build/sdk/staging_dir/target-i386_pentium-mmx_musl/usr/lib/pkgconfig:/builder/shared-workdir/build/sdk/staging_dir/target-i386_pentium-mmx_musl/usr/share/pkgconfig'
The Meson build system
Version: 0.56.0
Source dir: /builder/shared-workdir/build/sdk/build_dir/target-i386_pentium-mmx_musl/flashrom-pci/flashrom-v1.2
Build dir: /builder/shared-workdir/build/sdk/build_dir/target-i386_pentium-mmx_musl/flashrom-pci/flashrom-v1.2/openwrt-build
Build type: cross build
WARNING: Unknown options: "build.c_args, build.c_link_args, build.cpp_args, build.cpp_link_args"
The value of new options can be set with:
meson setup <builddir> --reconfigure -Dnew_option=new_value ...
Project name: flashromutils
Project version: v1.2
Using 'CFLAGS' from environment with value: ''
Using 'LDFLAGS' from environment with value: ''
C compiler for the host machine: i486-openwrt-linux-musl-gcc (gcc 8.4.0 "i486-openwrt-linux-musl-gcc (OpenWrt GCC 8.4.0 r16627-b93327c469) 8.4.0")
C linker for the host machine: i486-openwrt-linux-musl-gcc ld.bfd 2.34
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: x86_64
Host machine cpu: x86_64
Target machine cpu family: x86
Target machine cpu: legacy
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 
Found pkg-config: /builder/shared-workdir/build/sdk/staging_dir/host/bin/pkg-config (1.7.3)
Found CMake: /builder/shared-workdir/build/sdk/staging_dir/host/bin/cmake (3.19.1)
Run-time dependency libpci found: NO (tried pkgconfig and cmake)

../../../../build_dir/target-i386_pentium-mmx_musl/flashrom-pci/flashrom-v1.2/meson.build:100:2: ERROR: Dependency "libpci" not found, tried pkgconfig and cmake

A full log can be found at /builder/shared-workdir/build/sdk/build_dir/target-i386_pentium-mmx_musl/flashrom-pci/flashrom-v1.2/openwrt-build/meson-logs/meson-log.txt
make[3]: *** [Makefile:106: /builder/shared-workdir/build/sdk/build_dir/target-i386_pentium-mmx_musl/flashrom-pci/flashrom-v1.2/.configured_68b329da9893e34099c7d8ad5cb9c940] Error 1
time: package/feeds/packages/flashrom/pci/compile#2.00#0.50#2.97