#CXXFLAGS +=-D__WINDOWS_ASIO__
else ifeq ($(targetos), Linux)
CXXFLAGS += -D__LINUX_ALSA__
-CXXFLAGS += `pkg-config --cflags alsa`
-LDFLAGS += `pkg-config --libs alsa`
+CXXFLAGS += $(shell pkg-config --cflags alsa)
+LDFLAGS += $(shell pkg-config --libs alsa)
else ifeq ($(targetos), NetBSD)
CXXFLAGS += -D__LINUX_OSS__
LDFLAGS += -lossaudio