make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/readsb-3.9.0'
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c readsb.c -o readsb.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c anet.c -o anet.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c interactive.c -o interactive.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c mode_ac.c -o mode_ac.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c mode_s.c -o mode_s.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c comm_b.c -o comm_b.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c net_io.c -o net_io.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c crc.c -o crc.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c demod_2400.c -o demod_2400.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c stats.c -o stats.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c cpr.c -o cpr.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c icao_filter.c -o icao_filter.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c track.c -o track.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c util.c -o util.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c convert.c -o convert.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c sdr_ifile.c -o sdr_ifile.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c sdr_beast.c -o sdr_beast.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c sdr.c -o sdr.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c ais_charset.c -o ais_charset.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
powerpc-openwrt-linux-musl-gcc -DMODES_READSB_VERSION=\"'v3.9.0'\" -DMODES_READSB_VARIANT=\"Mictronics\" -D_GNU_SOURCE -DENABLE_RTLSDR -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/readsb-3.9.0=readsb-3.9.0 -ffunction-sections -fdata-sections -flto=auto -fno-fat-lto-objects -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -c sdr_rtlsdr.c -o sdr_rtlsdr.o
Package librtlsdr was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtlsdr.pc'
to the PKG_CONFIG_PATH environment variable
Package 'librtlsdr' not found
sdr_rtlsdr.c:58:10: fatal error: rtl-sdr.h: No such file or directory
   58 | #include <rtl-sdr.h>
      |          ^~~~~~~~~~~
compilation terminated.
make[4]: *** [Makefile:60: sdr_rtlsdr.o] Error 1
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/readsb-3.9.0'
make[3]: *** [Makefile:75: /builder/shared-workdir/build/sdk/build_dir/target-powerpc_464fp_musl/readsb-3.9.0/.built] Error 2
time: package/feeds/packages/readsb/compile#6.00#2.40#8.62