Re: ?==?utf-8?q? ?==?utf-8?q? [RFC i-g-t 1/9]?==?utf-8?q? configure.ac: Test for libdrm_intel and build for it if present.

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On Saturday, May 21, 2016 08:55 BST, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: 
> On Fri, May 20, 2016 at 06:59:25PM -0400, robert.foss@xxxxxxxxxxxxx wrote:
> > From: Robert Foss <robert.foss@xxxxxxxxxxxxx>
> > 
> > Test for libdrm_intel and build for it if present.
> > Also expose the HAVE_INTEL #define to allow code to be conditionally
> > compiled.
> > 
> > Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx>
> > ---
> >  configure.ac | 14 +++++++++++++-
> >  1 file changed, 13 insertions(+), 1 deletion(-)
> > 
> > diff --git a/configure.ac b/configure.ac
> > index 0589782..b6fc168 100644
> > --- a/configure.ac
> > +++ b/configure.ac
> > @@ -100,7 +100,7 @@ if test "x$GCC" = "xyes"; then
> >  fi
> >  AC_SUBST(ASSEMBLER_WARN_CFLAGS)
> >  
> > -PKG_CHECK_MODULES(DRM, [libdrm_intel >= 2.4.64 libdrm])
> > +PKG_CHECK_MODULES(DRM, [libdrm])
> >  PKG_CHECK_MODULES(PCIACCESS, [pciaccess >= 0.10])
> >  
> >  case "$target_cpu" in
> > @@ -150,6 +150,18 @@ PKG_CHECK_MODULES(GLIB, glib-2.0)
> >  # -----------------------------------------------------------------------------
> >  #			Configuration options
> >  # -----------------------------------------------------------------------------
> > +AC_ARG_ENABLE(intel, AS_HELP_STRING([--disable-intel],
> > +	      [Enable building of intel specific parts (default: auto)]),
> > +	      [INTEL=$enableval], [INTEL=auto])
> > +if test "x$INTEL" = xauto; then
> > +	PKG_CHECK_EXISTS([libdrm_intel >= 2.4.64], [INTEL=yes], [INTEL=no])
> > +fi
> > +if test "x$INTEL" = xyes; then
> > +	PKG_CHECK_MODULES(DRM_INTEL, [libdrm_intel >= 2.4.64])
> > +	AC_DEFINE(HAVE_INTEL, 1, [Have intel support])
> > +fi
> > +AM_CONDITIONAL(HAVE_INTEL, [test "x$INTEL" = xyes])
> 
> HAVE_INTEL caused quite a bit of confusion when reading the later build
> patches.
> 
> Please use HAVE_LIBDRM_INTEL instead
As a counter argument, one could, should really, use --enable-intel to replace the 'x86' parts in commit bccc0ec6a3fdae880e14770c2ff5770fb86ea6fc. Perhaps HAVE_INTEL isn't that bad when we take that into consideration ?

Regards,
Emil

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