On 22/10/2021 13.20, Owen LaGarde wrote:
Am I using --extra-cflags and --extra-ldflags wrong in the configure call?
I'd like to source build several pre-reqs specific to supporting the qemu source
build. I'd specifically not like to install neither the qemu or re-req builds
at the system level. Normally I'd expect the --extra-cflags and --extra-ldflags
configure options to do this but they do not appear to propagate to meson.
There
was an approved meson patch back in 2018 for extra-cflags / extra-ldflags
and qemu
is currently using meson >5.8(?) but it doesn't look like configure is
adding the
args anywhere in the build tree. There are a number of ways to do this, what's
appropriate / future-proof wrt building qemu from source? And why is configure
supporting --extra-[c,ld]args but not doing anything with the values?
I see a similar behavior with netmap now - I've got the corresponding header
file in a non-standard directory, and up to commit 837b84b1c078bf3e909 it
used to work fine to do:
.../configure --enable-netmap \
--extra-cflags=-I/path/to/netmap/sys
but since the conversion to meson, this does not seem to work anymore.
Paolo, any ideas?
Thomas
PS: As a work-around, it seems to be fine to pass the flags via the CFLAGS
environment variable instead:
CFLAGS=-I/path/to/netmap/sys .../configure --enable-netmap
