On Fri, 2013-11-22 at 13:48 -0800, H.J. Lu wrote: > On Fri, Nov 22, 2013 at 1:24 PM, Steve Ellcey <sell...@mips.com> wrote: > > > > I am building a cross GCC (targeting MIPS) on an x86-64 Linux system but I > > want to build the compiler as a 32 bit executable. I thought the right way > > to do this was to do: > > > > export CFLAGS='-O2 -g -m32' > > export CXXFLAGS-'-O2 -g -m32' > > > > before running configure and make. > > > > This is working in that it created cc1 as a 32 bit executable like I wanted > > it to but when the build continues and builds libgcc, it uses CFLAGS when > > it is using the newly built gcc to compile libgcc. That is wrong because > > the > > GCC compiler that I just built (targeting MIPS) does not understand the > > -m32 flag and I don't want to override the options used when building the > > libraries anyway, only the options used to build executables. > > > > Am I setting the wrong CFLAGS/CXXFLAGS variables? Or is this a bug? > > > > Can you not touch CFLAGS/CXXFLAGS? Instead, you do > > # CC="gcc -m32" CXX="g++ -m32" .../configure .... > # make CC="gcc -m32" CXX="g++ -m32" ...
Doh. I don't know why that didn't occur to me. It should work and that is what I will do. Steve
