This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

configure:588: checking for a BSD compatible install
configure:641: checking whether build environment is sane
configure:698: checking whether make sets ${MAKE}
configure:744: checking for working aclocal
configure:757: checking for working autoconf
configure:770: checking for working automake
configure:783: checking for working autoheader
configure:796: checking for working makeinfo
configure:817: checking host system type
configure:838: checking target system type
configure:858: checking whether make sets ${MAKE}
configure:887: checking for gcc
configure:1000: checking whether the C compiler (gcc -O2 -march=i686 -mfpmath=sse -msse2 -pipe -pipe -frecord-gcc-switches -fno-diagnostics-color -fmessage-length=0 -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0) works
configure:1016: gcc -o conftest -O2 -march=i686 -mfpmath=sse -msse2 -pipe -pipe -frecord-gcc-switches -fno-diagnostics-color -fmessage-length=0  -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0 conftest.c  1>&5
configure:1013:1: error: return type defaults to 'int' [-Wimplicit-int]
 1013 | main(){return(0);}
      | ^~~~
configure: failed program was:

#line 1011 "configure"
#include "confdefs.h"

main(){return(0);}