make[4]: Entering directory '/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/build_dir/target-i386_pentium4_musl-1.1.16/rtl-ais-20151213'
ccache_cc rtl_ais.o convenience.o ./aisdecoder/aisdecoder.o ./aisdecoder/sounddecoder.o ./aisdecoder/lib/receiver.o ./aisdecoder/lib/protodec.o ./aisdecoder/lib/hmalloc.o ./aisdecoder/lib/filter.o -o rtl_ais -L/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/staging_dir/target-i386_pentium4_musl-1.1.16/usr/lib -L/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/staging_dir/target-i386_pentium4_musl-1.1.16/lib -L/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/staging_dir/toolchain-i386_pentium4_gcc-5.4.0_musl-1.1.16/usr/lib -L/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/staging_dir/toolchain-i386_pentium4_gcc-5.4.0_musl-1.1.16/lib -znow -zrelro  -lpthread -lm -L/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/staging_dir/target-i386_pentium4_musl-1.1.16/usr/lib -lrtlsdr -lusb-1.0
./aisdecoder/lib/filter.o: In function `__mac_g':
filter.c:(.text+0x0): multiple definition of `__mac_g'
./aisdecoder/lib/receiver.o:receiver.c:(.text+0x0): first defined here
./aisdecoder/lib/filter.o: In function `__mac_c':
filter.c:(.text+0x1f): multiple definition of `__mac_c'
./aisdecoder/lib/receiver.o:receiver.c:(.text+0x1f): first defined here
collect2: error: ld returned 1 exit status
Makefile:56: recipe for target 'rtl_ais' failed
make[4]: *** [rtl_ais] Error 1
make[4]: Leaving directory '/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/build_dir/target-i386_pentium4_musl-1.1.16/rtl-ais-20151213'
Makefile:53: recipe for target '/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/build_dir/target-i386_pentium4_musl-1.1.16/rtl-ais-20151213/.built' failed
make[3]: *** [/build/lede-17.01/slaves/phase2/i386_pentium4/build/sdk/build_dir/target-i386_pentium4_musl-1.1.16/rtl-ais-20151213/.built] Error 2