On 04/02/2015 12:52 PM, Ben Pfaff wrote:
> CC: Mark B Kavanagh <mark.b.kavan...@intel.com>
> Signed-off-by: Ben Pfaff <b...@nicira.com>
> ---
> INSTALL.md | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/INSTALL.md b/INSTALL.md
> index 273093b..cde9a20 100644
> --- a/INSTALL.md
> +++ b/INSTALL.md
> @@ -192,6 +192,14 @@ To use 'clang' compiler:
>
> `% ./configure CC=clang`
>
> +To supply special flags to the C compiler, specify them as CFLAGS on
> +the configure command line. If you want the default CFLAGS, which
> +include "-g" to build debug symbols and "-O2" to enable optimizations,
> +you must include them yourself. For example, to build with the
> +default CFLAGS plus "-mssse3", you might run configure as follows:
> +
> + `% ./configure CFLAGS="-g -O2 -mssse3"`
> +
> To build the Linux kernel module, so that you can run the
> kernel-based switch, pass the location of the kernel build
> directory on --with-linux. For example, to build for a running
>
Acked-by: Russell Bryant <rbry...@redhat.com>
On a related note, it's probably worth adding a similar note about
custom CFLAGS for the Linux kernel module. For example, I have to use
this flag:
$ make EXTRA_CFLAGS="-Wno-error=date-time"
I can post a follow-up patch for that though if you'd like.
--
Russell Bryant
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