Applying ./patches/200-fix-iconv-detection.patch using plaintext: 
patching file configure.ac

Applying ./patches/300-use-openwrt-flags.patch using plaintext: 
patching file configure.ac
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: /builder/shared-workdir/build/sdk/staging_dir/host/bin/aclocal -I /builder/shared-workdir/build/sdk/staging_dir/target-powerpc_8540_musl/host/share/aclocal -I /builder/shared-workdir/build/sdk/staging_dir/hostpkg/share/aclocal -I /builder/shared-workdir/build/sdk/staging_dir/target-powerpc_8540_musl/usr/share/aclocal -I m4 -I . --force 
autoreconf: configure.ac: tracing
autoreconf: configure.ac: not using Libtool
autoreconf: running: /builder/shared-workdir/build/sdk/staging_dir/host/bin/autoconf --include=/builder/shared-workdir/build/sdk/staging_dir/target-powerpc_8540_musl/host/share/aclocal --include=/builder/shared-workdir/build/sdk/staging_dir/hostpkg/share/aclocal --include=/builder/shared-workdir/build/sdk/staging_dir/target-powerpc_8540_musl/usr/share/aclocal --include=m4 --include=. --prepend-include=/builder/shared-workdir/build/sdk/staging_dir/host/share/aclocal --force
autoreconf: running: /builder/shared-workdir/build/sdk/staging_dir/host/bin/autoheader --include=/builder/shared-workdir/build/sdk/staging_dir/target-powerpc_8540_musl/host/share/aclocal --include=/builder/shared-workdir/build/sdk/staging_dir/hostpkg/share/aclocal --include=/builder/shared-workdir/build/sdk/staging_dir/target-powerpc_8540_musl/usr/share/aclocal --include=m4 --include=. --prepend-include=/builder/shared-workdir/build/sdk/staging_dir/host/share/aclocal --force
autoreconf: running: /builder/shared-workdir/build/sdk/staging_dir/host/bin/automake --add-missing --force-missing
configure.ac:78: installing './compile'
configure.ac:6: installing './config.guess'
configure.ac:6: installing './config.sub'
configure.ac:7: installing './install-sh'
configure.ac:7: installing './missing'
automake: error: no 'Makefile.am' found for any configure output
autoreconf: /builder/shared-workdir/build/sdk/staging_dir/host/bin/automake failed with exit status: 1
configure: WARNING: unrecognized options: --disable-nls
configure: loading site script /builder/shared-workdir/build/sdk/include/site/powerpc
checking build system type... x86_64-pc-linux-gnu
checking host system type... powerpc-openwrt-linux-gnu
checking target system type... powerpc-openwrt-linux-gnu
checking for a BSD-compatible install... /builder/shared-workdir/build/sdk/staging_dir/host/bin/install -c
checking whether build environment is sane... yes
checking for powerpc-openwrt-linux-strip... powerpc-openwrt-linux-musl-strip
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for powerpc-openwrt-linux-gcc... powerpc-openwrt-linux-musl-gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... yes
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether powerpc-openwrt-linux-musl-gcc accepts -g... yes
checking for powerpc-openwrt-linux-musl-gcc option to accept ISO C89... none needed
checking whether powerpc-openwrt-linux-musl-gcc understands -c and -o together... yes
checking for style of include used by make... GNU
checking dependency style of powerpc-openwrt-linux-musl-gcc... none
checking how to run the C preprocessor... powerpc-openwrt-linux-musl-gcc -E
checking for strip... (cached) powerpc-openwrt-linux-musl-strip
checking for rm... rm
checking for library containing libiconv... no
configure: error: iconv library missing
make[3]: *** [Makefile:86: /builder/shared-workdir/build/sdk/build_dir/target-powerpc_8540_musl/asterisk-chan-dongle-2021-10-06-3d046f7d/.configured_a17fb5ef857664f03cd0ce37cc5ea591] Error 1
time: package/feeds/telephony/asterisk-chan-dongle/compile#5.77#1.42#8.42