Your perl was compiled with gcc (version 6.3.0 20170516), okay.
Creating test wrappers for DBD::Gofer:
t/zvg_01basics.t 
t/zvg_02dbidrv.t 
t/zvg_03handle.t 
t/zvg_04mods.t 
t/zvg_05concathash.t 
t/zvg_06attrs.t 
t/zvg_07kids.t 
t/zvg_08keeperr.t 
t/zvg_09trace.t 
t/zvg_10examp.t 
t/zvg_11fetch.t 
t/zvg_12quote.t 
t/zvg_13taint.t 
t/zvg_14utf8.t 
t/zvg_15array.t 
t/zvg_16destroy.t 
t/zvg_19fhtrace.t 
t/zvg_20meta.t 
t/zvg_30subclass.t 
t/zvg_31methcache.t 
t/zvg_35thrclone.t 
t/zvg_40profile.t 
t/zvg_41prof_dump.t 
t/zvg_42prof_data.t 
t/zvg_43prof_env.t 
t/zvg_48dbi_dbd_sqlengine.t 
t/zvg_49dbd_file.t 
t/zvg_50dbm_simple.t 
t/zvg_51dbm_file.t 
t/zvg_52dbm_complex.t 
t/zvg_60preparse.t 
t/zvg_65transact.t 
t/zvg_70callbacks.t 
t/zvg_72childhandles.t 
t/zvg_80proxy.t 
t/zvg_85gofer.t 
t/zvg_86gofer_fail.t 
t/zvg_87gofer_cache.t 
t/zvg_90sql_type_cast.t 
Creating test wrappers for DBI::SQL::Nano:
t/zvn_48dbi_dbd_sqlengine.t 
t/zvn_49dbd_file.t 
t/zvn_50dbm_simple.t 
t/zvn_51dbm_file.t 
t/zvn_52dbm_complex.t 
t/zvn_85gofer.t 
Creating test wrappers for DBI::PurePerl:
t/zvp_01basics.t 
t/zvp_02dbidrv.t 
t/zvp_03handle.t 
t/zvp_04mods.t 
t/zvp_05concathash.t 
t/zvp_06attrs.t 
t/zvp_07kids.t 
t/zvp_08keeperr.t 
t/zvp_09trace.t 
t/zvp_10examp.t 
t/zvp_11fetch.t 
t/zvp_12quote.t 
t/zvp_13taint.t 
t/zvp_14utf8.t 
t/zvp_15array.t 
t/zvp_16destroy.t 
t/zvp_19fhtrace.t 
t/zvp_20meta.t 
t/zvp_30subclass.t 
t/zvp_31methcache.t 
t/zvp_35thrclone.t 
t/zvp_40profile.t 
t/zvp_41prof_dump.t 
t/zvp_42prof_data.t 
t/zvp_43prof_env.t 
t/zvp_48dbi_dbd_sqlengine.t 
t/zvp_49dbd_file.t 
t/zvp_50dbm_simple.t 
t/zvp_51dbm_file.t 
t/zvp_52dbm_complex.t 
t/zvp_60preparse.t 
t/zvp_65transact.t 
t/zvp_70callbacks.t 
t/zvp_72childhandles.t 
t/zvp_80proxy.t 
t/zvp_85gofer.t 
t/zvp_86gofer_fail.t 
t/zvp_87gofer_cache.t 
t/zvp_90sql_type_cast.t 
Creating test wrappers for DBD::Gofer + DBI::SQL::Nano:
t/zvxgn_48dbi_dbd_sqlengine.t 
t/zvxgn_49dbd_file.t 
t/zvxgn_50dbm_simple.t 
t/zvxgn_51dbm_file.t 
t/zvxgn_52dbm_complex.t 
t/zvxgn_85gofer.t 
Creating test wrappers for DBD::Gofer + DBI::PurePerl:
t/zvxgp_01basics.t 
t/zvxgp_02dbidrv.t 
t/zvxgp_03handle.t 
t/zvxgp_04mods.t 
t/zvxgp_05concathash.t 
t/zvxgp_06attrs.t 
t/zvxgp_07kids.t 
t/zvxgp_08keeperr.t 
t/zvxgp_09trace.t 
t/zvxgp_10examp.t 
t/zvxgp_11fetch.t 
t/zvxgp_12quote.t 
t/zvxgp_13taint.t 
t/zvxgp_14utf8.t 
t/zvxgp_15array.t 
t/zvxgp_16destroy.t 
t/zvxgp_19fhtrace.t 
t/zvxgp_20meta.t 
t/zvxgp_30subclass.t 
t/zvxgp_31methcache.t 
t/zvxgp_35thrclone.t 
t/zvxgp_40profile.t 
t/zvxgp_41prof_dump.t 
t/zvxgp_42prof_data.t 
t/zvxgp_43prof_env.t 
t/zvxgp_48dbi_dbd_sqlengine.t 
t/zvxgp_49dbd_file.t 
t/zvxgp_50dbm_simple.t 
t/zvxgp_51dbm_file.t 
t/zvxgp_52dbm_complex.t 
t/zvxgp_60preparse.t 
t/zvxgp_65transact.t 
t/zvxgp_70callbacks.t 
t/zvxgp_72childhandles.t 
t/zvxgp_80proxy.t 
t/zvxgp_85gofer.t 
t/zvxgp_86gofer_fail.t 
t/zvxgp_87gofer_cache.t 
t/zvxgp_90sql_type_cast.t 
Creating test wrappers for DBI::SQL::Nano + DBI::PurePerl:
t/zvxnp_48dbi_dbd_sqlengine.t 
t/zvxnp_49dbd_file.t 
t/zvxnp_50dbm_simple.t 
t/zvxnp_51dbm_file.t 
t/zvxnp_52dbm_complex.t 
t/zvxnp_85gofer.t 
Creating test wrappers for DBD::Gofer + DBI::SQL::Nano + DBI::PurePerl:
t/zvxgnp_48dbi_dbd_sqlengine.t 
t/zvxgnp_49dbd_file.t 
t/zvxgnp_50dbm_simple.t 
t/zvxgnp_51dbm_file.t 
t/zvxgnp_52dbm_complex.t 
t/zvxgnp_85gofer.t 
Checking if your kit is complete...
Looks good

    I see you're using perl 5.028000 on x86_64-linux, okay.
    Remember to actually *read* the README file!
    Use  'make' to build the software (dmake or nmake on Windows).
    Then 'make test' to execute self tests.
    Then 'make install' to install the DBI and then delete this working
    directory before unpacking and building any DBD::* drivers.

Generating a Unix-style Makefile
Writing Makefile for DBI
Writing MYMETA.yml and MYMETA.json
make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arc_arc700_uClibc/perl/DBI-1.634'
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.0" -MExtUtils::Command -e 'mkpath' -- blib/lib/DBI
rm -f blib/lib/DBI/Changes.pm
cp Changes blib/lib/DBI/Changes.pm
cp DBIXS.h blib/arch/auto/DBI/DBIXS.h
cp lib/Bundle/DBI.pm blib/lib/Bundle/DBI.pm
cp lib/DBD/Gofer/Policy/classic.pm blib/lib/DBD/Gofer/Policy/classic.pm
cp lib/DBD/File/Roadmap.pod blib/lib/DBD/File/Roadmap.pod
cp lib/DBD/Sponge.pm blib/lib/DBD/Sponge.pm
cp lib/DBD/Gofer/Transport/stream.pm blib/lib/DBD/Gofer/Transport/stream.pm
cp dbipport.h blib/arch/auto/DBI/dbipport.h
cp dbi_sql.h blib/arch/auto/DBI/dbi_sql.h
cp lib/DBD/NullP.pm blib/lib/DBD/NullP.pm
cp lib/DBD/Gofer.pm blib/lib/DBD/Gofer.pm
cp lib/DBD/Proxy.pm blib/lib/DBD/Proxy.pm
cp dbixs_rev.pl blib/lib/dbixs_rev.pl
cp lib/DBD/Gofer/Policy/Base.pm blib/lib/DBD/Gofer/Policy/Base.pm
cp lib/DBI/Gofer/Request.pm blib/lib/DBI/Gofer/Request.pm
cp lib/DBI/Const/GetInfoType.pm blib/lib/DBI/Const/GetInfoType.pm
cp DBI.pm blib/lib/DBI.pm
cp lib/DBD/File/HowTo.pod blib/lib/DBD/File/HowTo.pod
cp lib/DBD/Gofer/Transport/Base.pm blib/lib/DBD/Gofer/Transport/Base.pm
cp lib/DBI/DBD/SqlEngine/Developers.pod blib/lib/DBI/DBD/SqlEngine/Developers.pod
cp lib/DBI/Const/GetInfo/ANSI.pm blib/lib/DBI/Const/GetInfo/ANSI.pm
cp lib/DBI/DBD/Metadata.pm blib/lib/DBI/DBD/Metadata.pm
cp lib/DBD/File/Developers.pod blib/lib/DBD/File/Developers.pod
cp lib/DBD/File.pm blib/lib/DBD/File.pm
cp dbivport.h blib/arch/auto/DBI/dbivport.h
cp lib/DBI/DBD/SqlEngine/HowTo.pod blib/lib/DBI/DBD/SqlEngine/HowTo.pod
cp lib/DBI/DBD.pm blib/lib/DBI/DBD.pm
cp lib/DBI/FAQ.pm blib/lib/DBI/FAQ.pm
cp lib/DBI/Const/GetInfo/ODBC.pm blib/lib/DBI/Const/GetInfo/ODBC.pm
cp lib/DBD/Gofer/Policy/pedantic.pm blib/lib/DBD/Gofer/Policy/pedantic.pm
cp lib/DBD/Gofer/Transport/null.pm blib/lib/DBD/Gofer/Transport/null.pm
cp Driver.xst blib/arch/auto/DBI/Driver.xst
cp lib/DBI/DBD/SqlEngine.pm blib/lib/DBI/DBD/SqlEngine.pm
cp lib/DBI/Gofer/Execute.pm blib/lib/DBI/Gofer/Execute.pm
cp lib/DBI/Gofer/Response.pm blib/lib/DBI/Gofer/Response.pm
cp lib/DBD/DBM.pm blib/lib/DBD/DBM.pm
cp lib/DBD/ExampleP.pm blib/lib/DBD/ExampleP.pm
cp Driver_xst.h blib/arch/auto/DBI/Driver_xst.h
cp dbixs_rev.h blib/arch/auto/DBI/dbixs_rev.h
cp lib/DBD/Gofer/Transport/corostream.pm blib/lib/DBD/Gofer/Transport/corostream.pm
cp lib/DBD/Gofer/Transport/pipeone.pm blib/lib/DBD/Gofer/Transport/pipeone.pm
cp lib/DBI/Const/GetInfoReturn.pm blib/lib/DBI/Const/GetInfoReturn.pm
cp dbd_xsh.h blib/arch/auto/DBI/dbd_xsh.h
cp lib/DBD/Gofer/Policy/rush.pm blib/lib/DBD/Gofer/Policy/rush.pm
cp lib/Win32/DBIODBC.pm blib/lib/Win32/DBIODBC.pm
cp lib/DBI/Gofer/Transport/stream.pm blib/lib/DBI/Gofer/Transport/stream.pm
cp lib/DBI/Profile.pm blib/lib/DBI/Profile.pm
cp lib/DBI/Gofer/Serializer/Base.pm blib/lib/DBI/Gofer/Serializer/Base.pm
cp lib/DBI/ProfileData.pm blib/lib/DBI/ProfileData.pm
cp lib/DBI/Util/CacheMemory.pm blib/lib/DBI/Util/CacheMemory.pm
cp lib/DBI/Gofer/Transport/pipeone.pm blib/lib/DBI/Gofer/Transport/pipeone.pm
cp lib/DBI/ProxyServer.pm blib/lib/DBI/ProxyServer.pm
cp lib/DBI/ProfileSubs.pm blib/lib/DBI/ProfileSubs.pm
cp lib/DBI/PurePerl.pm blib/lib/DBI/PurePerl.pm
cp lib/DBI/Util/_accessor.pm blib/lib/DBI/Util/_accessor.pm
cp lib/DBI/ProfileDumper/Apache.pm blib/lib/DBI/ProfileDumper/Apache.pm
cp lib/DBI/Gofer/Serializer/DataDumper.pm blib/lib/DBI/Gofer/Serializer/DataDumper.pm
cp lib/DBI/W32ODBC.pm blib/lib/DBI/W32ODBC.pm
cp lib/DBI/Gofer/Serializer/Storable.pm blib/lib/DBI/Gofer/Serializer/Storable.pm
cp lib/DBI/ProfileDumper.pm blib/lib/DBI/ProfileDumper.pm
cp lib/DBI/Gofer/Transport/Base.pm blib/lib/DBI/Gofer/Transport/Base.pm
cp lib/DBI/SQL/Nano.pm blib/lib/DBI/SQL/Nano.pm
Running Mkbootstrap for DBI ()
chmod 644 "DBI.bs"
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.0" -MExtUtils::Command::MM -e 'cp_nonempty' -- DBI.bs blib/arch/auto/DBI/DBI.bs 644
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.0" -p -e "s/~DRIVER~/Perl/g" ./Driver.xst > Perl.xsi
"/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/bin/perl5.28.0" "/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/lib/perl5/5.28.0/ExtUtils/xsubpp"  -typemap '/builder/shared-workdir/build/sdk/staging_dir/hostpkg/usr/lib/perl5/5.28.0/ExtUtils/typemap' -typemap '/builder/shared-workdir/build/sdk/build_dir/target-arc_arc700_uClibc/perl/DBI-1.634/typemap'  Perl.xs > Perl.xsc
mv Perl.xsc Perl.c
arc-openwrt-linux-gcc -c   -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Os -pipe -matomic -mcpu=arc700 -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -iremap/builder/shared-workdir/build/sdk/build_dir/target-arc_arc700_uClibc/perl/DBI-1.634:DBI-1.634 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -I/builder/shared-workdir/build/sdk/staging_dir/target-arc_arc700_uClibc/usr/include -I/builder/shared-workdir/build/sdk/staging_dir/target-arc_arc700_uClibc/include -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arc_arc700_gcc-arc-2017.09-release_uClibc/usr/include -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-arc_arc700_gcc-arc-2017.09-release_uClibc/include -O2   -DVERSION=\"1.634\" -DXS_VERSION=\"1.634\" -fPIC "-I/builder/shared-workdir/build/sdk/staging_dir/target-arc_arc700_uClibc/usr/lib/perl5/5.28/CORE/"  -W -Wall -Wpointer-arith -Wbad-function-cast -Wno-comment -Wno-sign-compare -Wno-cast-qual -Wmissing-noreturn -Wno-unused-parameter -DDBI_NO_THREADS Perl.c
In file included from Perl.xs:7:0:
DBIXS.h:22:10: fatal error: EXTERN.h: No such file or directory
 #include <EXTERN.h>
          ^~~~~~~~~~
compilation terminated.
Makefile:510: recipe for target 'Perl.o' failed
make[4]: *** [Perl.o] Error 1
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arc_arc700_uClibc/perl/DBI-1.634'
Makefile:64: recipe for target '/builder/shared-workdir/build/sdk/build_dir/target-arc_arc700_uClibc/perl/DBI-1.634/.built' failed
make[3]: *** [/builder/shared-workdir/build/sdk/build_dir/target-arc_arc700_uClibc/perl/DBI-1.634/.built] Error 2
time: package/feeds/packages/perl-dbi/compile#0.91#0.47#2.10