>>> pifmrds 0bf57f9ce0d954365a38d8af8e7be6f28521c3f2 Extracting
gzip -d -c /home/giuliobenetti/autobuild/run/instance-1/dl/pifmrds/pifmrds-0bf57f9ce0d954365a38d8af8e7be6f28521c3f2.tar.gz | tar --strip-components=1 -C /home/giuliobenetti/autobuild/run/instance-1/output-1/build/pifmrds-0bf57f9ce0d954365a38d8af8e7be6f28521c3f2   -xf -
>>> pifmrds 0bf57f9ce0d954365a38d8af8e7be6f28521c3f2 Patching

Applying 0001-Makefile-cross-compile-friendly.patch using patch: 
patching file src/Makefile

Applying 0002-Makefile-use-LDFLAGS.patch using patch: 
patching file src/Makefile

Applying 0003-Makefile-fix-static-link.patch using patch: 
patching file src/Makefile
>>> pifmrds 0bf57f9ce0d954365a38d8af8e7be6f28521c3f2 Configuring
>>> pifmrds 0bf57f9ce0d954365a38d8af8e7be6f28521c3f2 Building
PATH="/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin:/home/giuliobenetti/autobuild/run/instance-1/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin" /usr/bin/make -j4 -C /home/giuliobenetti/autobuild/run/instance-1/output-1/build/pifmrds-0bf57f9ce0d954365a38d8af8e7be6f28521c3f2/src CC="/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc" LDFLAGS=" -static" CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c" SNDFILE_LIBS="`/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/pkg-config --libs sndfile`" app rds_wav
make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-1/output-1/build/pifmrds-0bf57f9ce0d954365a38d8af8e7be6f28521c3f2/src'
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c rds.c
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c waveforms.c
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c pi_fm_rds.c
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c fm_mpx.c
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c control_pipe.c
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0  -static -std=gnu99 -ffast-math -c rds_wav.c
/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/arm-linux-gcc -static -o rds_wav rds_wav.o rds.o waveforms.o fm_mpx.o -L/home/giuliobenetti/autobuild/run/instance-1/output-1/host/bin/../arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib -lsndfile @EXTERNAL_MPEG_LIBS@  -lm
arm-linux-gcc.br_real: error: EXTERNAL_MPEG_LIBS@: No such file or directory
make[1]: *** [Makefile:7: rds_wav] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-1/output-1/build/pifmrds-0bf57f9ce0d954365a38d8af8e7be6f28521c3f2/src'
make: *** [package/pkg-generic.mk:293: /home/giuliobenetti/autobuild/run/instance-1/output-1/build/pifmrds-0bf57f9ce0d954365a38d8af8e7be6f28521c3f2/.stamp_built] Error 2
make: Leaving directory '/home/giuliobenetti/autobuild/run/instance-1/buildroot'