On Wed, Sep 26, 2018 at 10:15:36AM +0100, Bruce Richardson wrote: > Rather than relying on the target machine architecture, use the > size of a pointer from the compiler to determine if we are 64-bits > or not. This allows correct behaviour when you pass -m32 as a compile > option. It also allows us to use this value repeatedly throughout the > repo rather than continually testing for the sizeof(void*). > > Signed-off-by: Bruce Richardson <bruce.richard...@intel.com> > ---
Just by way of note, for those looking to test: On Fedora 28 I can compile a 32-bit version of DPDK using: PKG_CONFIG_LIBDIR='/usr/lib/pkgconfig' meson -Dc_args=-m32 -Dc_link_args=-m32 i686-build ninja -C i686-build The PKG_CONFIG_LIBDIR is necessary to ensure the 32-bit .pc files are found. The c_args and c_link_args values are pretty self-explanatory. This didn't work before this patch because we looked at host_system() for 32-bit or 64-bit info, rather than asking the compiler about it. /Bruce PS: Sorry, Thomas, this doesn't seem to work on Arch, which seems to have a more mixed lib setup than other distros, having /usr/lib32, /usr/lib64 as well as a 3rd /usr/lib directory to confuse things. :-(
