Add FreeBSD support

FreeBSD support, reworked from earlier pr by @neveragainde

Makefile

@@ -1,8 +1,5 @@
 PROGNAME=dump1090
 
-RTLSDR ?= yes
-BLADERF ?= yes
-
 CPPFLAGS += -DMODES_DUMP1090_VERSION=\"$(DUMP1090_VERSION)\" -DMODES_DUMP1090_VARIANT=\"dump1090-fa\"
 
 DIALECT = -std=c11
@@ -12,8 +9,9 @@ LIBS = -lpthread -lm
 UNAME := $(shell uname)
 
 ifeq ($(UNAME), Linux)
-  LIBS += -lrt
   CFLAGS += -D_DEFAULT_SOURCE
+  LIBS += -lrt
+  LIBS_USB += -lusb-1.0
 endif
 
 ifeq ($(UNAME), Darwin)
@@ -23,13 +21,27 @@ ifeq ($(UNAME), Darwin)
   endif
   CFLAGS += -DMISSING_NANOSLEEP
   COMPAT += compat/clock_nanosleep/clock_nanosleep.o
+  LIBS_USB += -lusb-1.0
+  BLADERF ?= no
 endif
 
 ifeq ($(UNAME), OpenBSD)
   CFLAGS += -DMISSING_NANOSLEEP
   COMPAT += compat/clock_nanosleep/clock_nanosleep.o
+  LIBS_USB += -lusb-1.0
+  BLADERF ?= no
 endif
 
+ifeq ($(UNAME), FreeBSD)
+  CFLAGS += -D_DEFAULT_SOURCE
+  LIBS += -lrt
+  LIBS_USB += -lusb
+  BLADERF ?= no
+endif
+
+RTLSDR ?= yes
+BLADERF ?= yes
+
 ifeq ($(RTLSDR), yes)
   SDR_OBJ += sdr_rtlsdr.o
   CPPFLAGS += -DENABLE_RTLSDR
@@ -38,14 +50,14 @@ ifeq ($(RTLSDR), yes)
     CPPFLAGS += -I$(RTLSDR_PREFIX)/include
     LDFLAGS += -L$(RTLSDR_PREFIX)/lib
   else
-    CFLAGS += $(shell pkg-config --cflags librtlsdr)
+    CFLAGS += $(shell pkg-config --cflags-only-I librtlsdr)
     LDFLAGS += $(shell pkg-config --libs-only-L librtlsdr)
   endif
 
   ifeq ($(STATIC), yes)
-    LIBS_SDR += -Wl,-Bstatic -lrtlsdr -Wl,-Bdynamic -lusb-1.0
+    LIBS_SDR += -Wl,-Bstatic -lrtlsdr -Wl,-Bdynamic $(LIBS_USB)
   else
-    LIBS_SDR += -lrtlsdr -lusb-1.0
+    LIBS_SDR += -lrtlsdr $(LIBS_USB)
   endif
 endif
 

README.md

@@ -44,7 +44,7 @@ Binaries are built in the source directory; you will need to arrange to
 install them (and a method for starting them) yourself.
 
 "make BLADERF=no" will disable bladeRF support and remove the dependency on
-libbladeRF. This may be required on some platforms (e.g. MacOS).
+libbladeRF. Default is yes on Linux, no on other platforms.
 
 "make RTLSDR=no" will disable rtl-sdr support and remove the dependency on
-librtlsdr.
+librtlsdr. Default is yes.

compat/compat.h

@@ -18,6 +18,9 @@
 # define le16toh(x) OSSwapLittleToHostInt16(x)
 # define le32toh(x) OSSwapLittleToHostInt32(x)
 
+#elif defined(__FreeBSD__)
+#include <sys/endian.h>
+
 #else // other platforms
 
 # include <endian.h>