[PATCH v3 1/5] drm: Add config for detecting libdrm

[Mike Frysinger]

On 01 Jul 2015 14:52, Patrik Jakobsson wrote:
> Use pkg-config to try to find libdrm. If that fails use the standard
> include directory for kernel drm headers in /usr/include/drm.
> 
> * configure.ac: Use pkg-config to find libdrm
> 
> Signed-off-by: Patrik Jakobsson <patrik.jakobsson at linux.intel.com>
> ---
>  configure.ac | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/configure.ac b/configure.ac
> index bb8bf46..aa63af7 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -844,6 +844,10 @@ fi
>  AM_CONDITIONAL([USE_LIBUNWIND], [test "x$use_libunwind" = xyes])
>  AC_MSG_RESULT([$use_libunwind])
>  
> +PKG_CHECK_MODULES([libdrm], [libdrm],
> +	[CPPFLAGS="$CPPFLAGS $libdrm_CFLAGS"],
> +	[CPPFLAGS="$CPPFLAGS -I/usr/include/drm"])

yikes, no, this is a really really bad idea.  it should read:
PKG_CHECK_MODULES([LIBDRM], [libdrm],
	[CPPFLAGS="$CPPFLAGS $LIBDRM_CFLAGS"], [:])
-mike
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