minigbm: cros_gralloc: Use pkg-config for LIBS

This changes the Makefile to use pkg-config to query for necessary
library paths and names instead of hardcoding -ldrm.

BUG=b:36540057
TEST=emerge-reef arc-cros-gralloc with multilib patches
CQ-DEPEND=CL:505794

Change-Id: Id223203506d71b3966e9730f92badb461eb6cb1b
Reviewed-on: https://chromium-review.googlesource.com/499971
Commit-Ready: Tomasz Figa <tfiga@chromium.org>
Tested-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

diff --git a/cros_gralloc/Makefile b/cros_gralloc/Makefile
index 98b14ee..9e1be9e 100644 (file)
--- a/cros_gralloc/Makefile
+++ b/cros_gralloc/Makefile
@@ -11,12 +11,12 @@ PKG_CONFIG ?= pkg-config
 
 VPATH = $(dir $(SOURCES))
 LIBDRM_CFLAGS := $(shell $(PKG_CONFIG) --cflags libdrm)
+LIBDRM_LIBS := $(shell $(PKG_CONFIG) --libs libdrm)
 
 CPPFLAGS += -Wall -fPIC -Werror -flto $(LIBDRM_CFLAGS)
 CXXFLAGS += -std=c++11
 CFLAGS   += -std=c99
-# TODO(gurchetansingh): Switch to pkg-config.
-LIBS     += -shared -lcutils -lhardware -ldrm
+LIBS     += -shared -lcutils -lhardware $(LIBDRM_LIBS)
 
 OBJS =  $(foreach source, $(SOURCES), $(addsuffix .o, $(basename $(source))))