Applying ./patches/01-Makefile.patch using plaintext: 
patching file Makefile
make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/asterisk-opus-2021-11-01-20522fbc'
powerpc-openwrt-linux-musl-gcc -o codecs/codec_opus_open_source.so  -DAST_MODULE=\"codec_opus_open_source\" -DAST_MODULE_SELF_SYM=__internal_codec_opus_open_source_self  -Os -pipe -mcpu=464fp -fno-caller-saves -fno-plt -fhonour-copts -ffile-prefix-map=/builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/asterisk-opus-2021-11-01-20522fbc=asterisk-opus-2021-11-01-20522fbc -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -DPIC -fPIC  -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-powerpc_464fp_gcc-12.2.0_musl/usr/include -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-powerpc_464fp_gcc-12.2.0_musl/include/fortify -I/builder/shared-workdir/build/sdk/staging_dir/toolchain-powerpc_464fp_gcc-12.2.0_musl/include  -Wall -pthread   -lopus -shared -L/builder/shared-workdir/build/sdk/staging_dir/toolchain-powerpc_464fp_gcc-12.2.0_musl/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/toolchain-powerpc_464fp_gcc-12.2.0_musl/lib -znow -zrelro  -pthread -Wl,--warn-common codecs/codec_opus_open_source.c
codecs/codec_opus_open_source.c:39:10: fatal error: asterisk.h: No such file or directory
   39 | #include "asterisk.h"
      |          ^~~~~~~~~~~~
compilation terminated.
make[4]: *** [Makefile:60: codecs/codec_opus_open_source.so] Error 1
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/asterisk-opus-2021-11-01-20522fbc'
make[3]: *** [Makefile:83: /builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/asterisk-opus-2021-11-01-20522fbc/.built] Error 2
time: package/feeds/telephony/asterisk-opus/compile#0.34#0.13#0.93