-CPPFLAGS_JPEG ?= $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKGCONFIG) libjpeg --cflags $(STDERR_TO_DEVNULL))
-LIBS_JPEG ?= $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKGCONFIG) libjpeg --libs-only-L $(STDERR_TO_DEVNULL)) \
- $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKGCONFIG) libjpeg --libs-only-l $(STDERR_TO_DEVNULL))