Applying ./patches/001-no-subdirs.patch using plaintext: 
File Makefile.PL is read-only; trying to patch anyway
patching file Makefile.PL
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for File::RsyncP
Writing MYMETA.yml and MYMETA.json
Generating a Unix-style Makefile
Writing Makefile for File::RsyncP::Digest
Writing MYMETA.yml and MYMETA.json
Generating a Unix-style Makefile
Writing Makefile for File::RsyncP::FileList
Writing MYMETA.yml and MYMETA.json
configure: loading site script /builder/shared-workdir/build/sdk/include/site/arm
configure: Configuring File::RsyncP::FileList based on rsync 2.6.3
checking build system type... x86_64-pc-linux-gnu
checking host system type... arm-openwrt-linux-gnu
checking target system type... arm-openwrt-linux-gnu
checking for arm-openwrt-linux-gcc... arm-openwrt-linux-muslgnueabi-gcc
checking for C compiler default output file name... a.out
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checking whether arm-openwrt-linux-muslgnueabi-gcc accepts -g... yes
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checking how to run the C preprocessor... arm-openwrt-linux-muslgnueabi-gcc -E
checking for egrep... grep -E
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checking whether to include debugging symbols... yes
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checking for special C compiler options needed for large files... no
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checking whether -c -o works... cc1: note: someone does not honour COPTS correctly, passed 0 times
yes
configure: creating ./config.status
config.status: creating config.h

    File::RsyncP::FileList based on rsync 2.6.3 configuration successful

make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_xscale_musl_eabi/perl/File-RsyncP-0.74/Digest'
cp Digest.pm blib/lib/File/RsyncP/Digest.pm
AutoSplitting blib/lib/File/RsyncP/Digest.pm (blib/lib/auto/File/RsyncP/Digest)
Running Mkbootstrap for Digest ()
chmod 644 "Digest.bs"
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.1" -MExtUtils::Command::MM -e 'cp_nonempty' -- Digest.bs blib/arch/auto/File/RsyncP/Digest/Digest.bs 644
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.1" "/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/lib/perl5/5.28.1/ExtUtils/xsubpp"  -typemap '/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/lib/perl5/5.28.1/ExtUtils/typemap' -typemap '/builder/shared-workdir/build/sdk/build_dir/target-arm_xscale_musl_eabi/perl/File-RsyncP-0.74/Digest/typemap'  Digest.xs > Digest.xsc
mv Digest.xsc Digest.c
arm-openwrt-linux-gcc -c   -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Os -pipe -fno-caller-saves -fno-plt -fhonour-copts -mfloat-abi=soft -ffile-prefix-map=/builder/shared-workdir/build/sdk/build_dir/target-arm_xscale_musl_eabi/perl/File-RsyncP-0.74=File-RsyncP-0.74 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_xscale_gcc-12.3.0_musl_eabi/usr/include -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_xscale_gcc-12.3.0_musl_eabi/include/fortify -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_xscale_gcc-12.3.0_musl_eabi/include -D_REENTRANT -D_GNU_SOURCE -O2   -DVERSION=\"0.74\" -DXS_VERSION=\"0.74\" -fPIC "-I/builder/shared-workdir/build/sdk/staging_dir/target-arm_xscale_musl_eabi/usr/lib/perl5/5.28/CORE/"  -DPERL_BYTEORDER=12345678 Digest.c
Digest.xs:20:10: fatal error: EXTERN.h: No such file or directory
   20 | #include "EXTERN.h"
      |          ^~~~~~~~~~
compilation terminated.
make[4]: *** [Makefile:340: Digest.o] Error 1
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_xscale_musl_eabi/perl/File-RsyncP-0.74/Digest'
make[3]: *** [Makefile:60: /builder/shared-workdir/build/sdk/build_dir/target-arm_xscale_musl_eabi/perl/File-RsyncP-0.74/.built] Error 2
time: package/feeds/packages/perl-file-rsyncp/compile#5.69#3.01#14.69