Same as what happened with https://bugs.busybox.net/show_bug.cgi?id=12096 When compiling daq package, the build fails if the user has libdumbnet-dev installed in the host system. It tries to add the host's /usr/include see log bellow: /bin/bash ../libtool --tag=CC --mode=compile /home/gorkag/project/host/bin/aarch64-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -fvisibility=hidden -Wall -Wwrite-strings -Wsign-compare -Wcast-align -Wextra -Wformat -Wformat-security -Wno-unused-parameter -fno-strict-aliasing -fdiagnostics-show-option -pedantic -std=c99 -D_GNU_SOURCE -c -o daq_base.lo daq_base.c libtool: compile: /home/gorkag/project/host/bin/aarch64-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -fvisibility=hidden -Wall -Wwrite-strings -Wsign-compare -Wcast-align -Wextra -Wformat -Wformat-security -Wno-unused-parameter -fno-strict-aliasing -fdiagnostics-show-option -pedantic -std=c99 -D_GNU_SOURCE -c daq_base.c -fPIC -DPIC -o .libs/daq_base.o aarch64-linux-gnu-gcc: ERROR: unsafe header/library path used in cross-compilation: '-I/usr/include' make[4]: *** [Makefile:453: daq_base.lo] Error 1 make[3]: *** [Makefile:406: all-recursive] Error 1 make[2]: *** [Makefile:338: all] Error 2
Fixed by https://git.buildroot.org/buildroot/commit/?id=bd8a37a681cb5190f5af0ed1c20f556bf5661345. Thanks!