On Fri, 2018-05-11 at 16:15 +0000, Verma, Vishal L wrote: > On Fri, 2018-05-11 at 09:03 -0700, Dan Williams wrote: > > On Fri, May 11, 2018 at 9:00 AM, Verma, Vishal L > > <vishal.l.ve...@intel.com> wrote: > > > On Thu, 2018-05-10 at 16:47 -0700, Dave Jiang wrote: > > > > Compiler spits out warning with -D_FORTIFY_SOURCE=2 and -O0. Moving > > > > to > > > > -O2 > > > > to remove warnings. > > > > > > > > Signed-off-by: Dave Jiang <dave.ji...@intel.com> > > > > --- > > > > README.md | 2 +- > > > > autogen.sh | 2 +- > > > > 2 files changed, 2 insertions(+), 2 deletions(-) > > > > > > > > diff --git a/README.md b/README.md > > > > index 899dcbb8..e0bc5b7b 100644 > > > > --- a/README.md > > > > +++ b/README.md > > > > @@ -6,7 +6,7 @@ sub-system in the Linux kernel > > > > Build > > > > ===== > > > > `./autogen.sh` > > > > -`./configure CFLAGS='-g -O0' --prefix=/usr --sysconfdir=/etc -- > > > > libdir=/usr/lib64` > > > > +`./configure CFLAGS='-g -O2' --prefix=/usr --sysconfdir=/etc -- > > > > libdir=/usr/lib64` > > > > `make` > > > > `make check` > > > > `sudo make install` > > > > diff --git a/autogen.sh b/autogen.sh > > > > index a23cf53c..2a52688b 100755 > > > > --- a/autogen.sh > > > > +++ b/autogen.sh > > > > @@ -24,5 +24,5 @@ echo "------------------------------------------- > > > > -- > > > > ---- > > > > ---------------" > > > > echo "Initialized build system. For a common configuration please > > > > run:" > > > > echo "------------------------------------------------------------ > > > > ----" > > > > echo > > > > -echo "./configure CFLAGS='-g -O0' $args" > > > > +echo "./configure CFLAGS='-g -O2' $args" > > > > echo > > > > > > Should we also add -O2 to my_CFLAGS in configure.ac, or leave that to > > > the > > > user? > > > > Hmm, does it get in the way of the distro specified CFLAGS? > > rpmbuild CFLAGS seem to add to the ones specified here. Not sure what > would > happen if both -O1 and -O2 were present for example..
>From the gcc manual, If you use multiple -O options, with or without level numbers, the last such option is the one that is effective. So the distro CFLAGS should append to/override anything we specify in my_CFLAGS. > _______________________________________________ > Linux-nvdimm mailing list > Linux-nvdimm@lists.01.org > https://lists.01.org/mailman/listinfo/linux-nvdimm _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm