Applying ./patches/100-remove-devel-checklib-checks.patch using plaintext: 
patching file Makefile.PL
Warning: prerequisite Authen::SASL 2.08 not found.
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Authen::SASL::XS
Writing MYMETA.yml and MYMETA.json
make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/perl/Authen-SASL-XS-1.00'
cp XS.pod blib/lib/Authen/SASL/XS.pod
cp XS.pm blib/lib/Authen/SASL/XS.pm
cp lib/Authen/SASL/XS/Security.pm blib/lib/Authen/SASL/XS/Security.pm
Running Mkbootstrap for XS ()
chmod 644 "XS.bs"
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.1" -MExtUtils::Command::MM -e 'cp_nonempty' -- XS.bs blib/arch/auto/Authen/SASL/XS/XS.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_cortex-a7+neon-vfpv4_musl_eabi/perl/Authen-SASL-XS-1.00/typemap'  XS.xs > XS.xsc
Please specify prototyping behavior for XS.xs (see perlxs manual)
mv XS.xsc XS.c
arm-openwrt-linux-gcc -c  -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Os -pipe -fno-caller-saves -fno-plt -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -mfloat-abi=hard -ffile-prefix-map=/builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/perl/Authen-SASL-XS-1.00=Authen-SASL-XS-1.00 -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_cortex-a7+neon-vfpv4_gcc-8.4.0_musl_eabi/usr/include -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_cortex-a7+neon-vfpv4_gcc-8.4.0_musl_eabi/include/fortify -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_cortex-a7+neon-vfpv4_gcc-8.4.0_musl_eabi/include -D_REENTRANT -D_GNU_SOURCE -O2   -DVERSION=\"1.00\" -DXS_VERSION=\"1.00\" -fPIC "-I/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/usr/lib/perl5/5.28/CORE/"  -DSASL2 XS.c
XS.xs:42:10: fatal error: EXTERN.h: No such file or directory
 #include <EXTERN.h>
          ^~~~~~~~~~
compilation terminated.
make[4]: *** [Makefile:340: XS.o] Error 1
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/perl/Authen-SASL-XS-1.00'
make[3]: *** [Makefile:53: /builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/perl/Authen-SASL-XS-1.00/.built] Error 2
time: package/feeds/packages/perl-authen-sasl-xs/compile#0.96#0.35#2.36