Hi Bruce, > On Tue, Feb 27, 2018 at 02:38:53PM +0000, Hemant Agrawal wrote: > > Hi, > > > > How do we set CROSS COMPILE kernel path support. E.g. something > > equivalent to RTE_KERNELDIR for Makefile > > > > * Currently the Igb_uio compilation fails. > > * Also, there is no check to disable igb_uio compilation by flag e.g. > CONFIG_RTE_EAL_IGB_UIO=n > > > > > > I have not had time to look at the cross-compilation of kernel modules yet, so > patches welcome. :-) However, it should be possible to disable the kernel > modules generally using "enable_kmods" option (see meson_options.txt)
[Hemant] setting kernel_dir in meson_options.txt worked for me. > > > > > Other minor issue observed is that though the cross compile is set as 6.3, > > the > gcc 7 flags (which is my host compiler version) is getting enabled. Causing > following errors: > > > > Actually, this is a gcc quirk. GCC does not report an error for cmdline flags > disabling unknown warnings, unless other errors are displayed. This means that > when meson tries the options, GCC reports as supporting them. It also means > that it's not a problem when you do see them - just fix the other errors and > the > warnings about the flags will disappear. > > See: > https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gn > u.org%2Fonlinedocs%2Fgcc%2FWarning- > Options.html&data=02%7C01%7Chemant.agrawal%40nxp.com%7Cbe391f8ced > e54b43679808d57df1b4e4%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C > 1%7C636553399436715184&sdata=u3wSqw8DJ6dROat%2B%2BUr2EeusPmv90Z > GPYRvitUuWIHE%3D&reserved=0 > "However, if the -Wno- form is used, the behavior is slightly different: > no diagnostic is produced for -Wno-unknown-warning unless other diagnostics > are being produced. This allows the use of new -Wno- options with old > compilers, but if something goes wrong, the compiler warns that an > unrecognized option is present" [Hemant] Thanks it helps. > > > > ../drivers/bus/dpaa/dpaa_bus.c: At top level: > > > > cc1: warning: unrecognized command line option ‘-Wno-format-truncation’ > > > > cc1: warning: unrecognized command line option ‘-Wno-address-of-packed- > member’ > > > > Regards, > > Hemant > > > Regards, > /Bruce
