This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. configure:573: checking host system type configure:594: checking target system type configure:612: checking build system type configure:638: checking for gcc configure:751: checking whether the C compiler (/home/buildroot/instance-0/output-1/host/bin/arc-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O1 -g0 ) works configure:767: /home/buildroot/instance-0/output-1/host/bin/arc-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O1 -g0 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 conftest.c 1>&5 configure:764:1: error: return type defaults to 'int' [-Wimplicit-int] 764 | main(){return(0);} | ^~~~ configure: failed program was: #line 762 "configure" #include "confdefs.h" main(){return(0);}