On 2017-09-13 09:26 -0400, Neal Elliott wrote: > Hello everyone, > I attempted to build gcc 7.2.0 on my solaris machine with the following configure options: > > CFLAGS="-I/usr/local/include -m64" LDFLAGS="-L/usr/local/lib" CXXFLAGS="-I/usr/local/include" ../configure --disable- > multilib --with-system-zlib --enable-languages=c,c++ > > make fails with the error: ..... > ld: warning: file ../build-i386-pc-solaris2.10/libiberty/libiberty.a(concat.o): wrong ELF class: ELFCLASS64 You have CFLAGS with -m64 so libiberty is compiled to 64-bit object code. But CXXFLAGS is without -m64 so GCC might be compiled to 32-bit object code (I don't know your default). And, it's better to use CC="gcc -m64" CXX="g++ -m64" instead of CFLAGS=-m64 CXXFLAGS=-m64 since some package in GCC may change CFLAGS and CXXFLAGS. -- Xi Ruoyao <ryxi@xxxxxxxxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University
