get_usb_string undefined reference to `libiconv_open'

[zzzeee]

mac ok

macOS Big Sur 11.4
MacBook Pro (16-inch, 2019)

> go version
go version go1.15.2 darwin/amd64

liunx error

> uname -a
Linux xxx 4.18.0-147.43.1.el8_1.x86_64 #1 SMP Thu Feb 18 08:33:46 EST 2021 x86_64 x86_64 x86_64 GNU/Linux

> cat /etc/redhat-release
Red Hat Enterprise Linux release 8.1 (Ootpa)

> go version
go version go1.15.13 linux/amd64

> gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,fortran,lto --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --with-isl --disable-libmpx --enable-offload-targets=nvptx-none --without-cuda-driver --enable-gnu-indirect-function --enable-cet --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 8.4.1 20200928 (Red Hat 8.4.1-1) (GCC)

go run or go build error:

# github.com/karalabe/usb
/tmp/go-build517113935/b245/_x003.o: In function `get_usb_string':
../../pkg/mod/github.com/karalabe/usb@v0.0.0-20210518091819-4ea20957c210/hidapi/libusb/hid.c:440: undefined reference to `libiconv_open'
../../pkg/mod/github.com/karalabe/usb@v0.0.0-20210518091819-4ea20957c210/hidapi/libusb/hid.c:452: undefined reference to `libiconv'
../../pkg/mod/github.com/karalabe/usb@v0.0.0-20210518091819-4ea20957c210/hidapi/libusb/hid.c:467: undefined reference to `libiconv_close'
collect2: error: ld returned 1 exit status