The x11-drm kernel module builds do not compile on ppc64-32ul because they try
to use the userspace compile for kernel modules. Rather than duplicate the logic, 
we just fix the ebuild to use linux-mod_src_compile.

Developing this revealed a bug in linux-mod_src_compile, so make sure you have
at least revision 1.79 of linux-mod.eclass.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

--- x11-drm-99999999.ebuild.orig	2008-03-21 16:40:37.000000000 -0700
+++ x11-drm-99999999.ebuild	2008-03-21 18:10:56.000000000 -0700
@@ -73,7 +73,7 @@
 
 	# Substitute new directory under /lib/modules/${KV_FULL}
 	cd "${SRC_BUILD}"
-	sed -ie "s:/kernel/drivers/char/drm:/${PN}:g" Makefile
+	sed -i -e "s:/kernel/drivers/char/drm:/${PN}:g" Makefile
 
 	src_unpack_os
 
@@ -185,6 +185,18 @@
 		use video_cards_tdfx && \
 			VIDCARDS="${VIDCARDS} tdfx.${KV_OBJ}"
 	fi
+	
+	# remove leading and trailing space
+	VIDCARDS="${VIDCARDS% }"
+	VIDCARDS="${VIDCARDS# }"
+
+	if use kernel_linux; then
+		check_modules_supported
+		MODULE_NAMES=""
+		for i in $VIDCARDS ; do
+			MODULE_NAMES="${MODULE_NAMES}${i/.${KV_OBJ}}(x11-drm) "
+		done
+	fi
 }
 
 get_drm_build_dir() {
@@ -251,20 +263,13 @@
 
 src_compile_linux() {
 	# This now uses an M= build system. Makefile does most of the work.
-	cd "${SRC_BUILD}"
-	unset ARCH
-	echo "emake M='${SRC_BUILD}' \
-		LINUXDIR='${KERNEL_DIR}' \
-		DRM_MODULES='${VIDCARDS}' \
-		modules || die_error"
-	emake M="${SRC_BUILD}" \
-		LINUXDIR="${KERNEL_DIR}" \
-		DRM_MODULES="${VIDCARDS}" \
-		modules || die_error
+	BUILD_TARGETS="modules"
+	BUILD_PARAMS="DRM_MODULES='${VIDCARDS}' LINUXDIR='${KERNEL_DIR}' M='${SRC_BUILD}'"
+	ECONF_PARAMS='' S="${SRC_BUILD}" linux-mod_src_compile
 
 	if linux_chkconfig_present DRM
 	then
-		echo "Please disable in-kernel DRM support to use this package."
+		ewarn "Please disable in-kernel DRM support to use this package."
 	fi
 }