Added a comment about libusb dependency in Makefile.

Due to libdivecomputer's dependency, can be necessary to add libusb to pkg-config in order to compile,
so I exported the pkg-config line in the subsurface target to LIBS variable, and added a comment about libusb.

Signed-off-by: Riccardo Albertini <ssirowain@gmail.com>

diff --git a/Makefile b/Makefile
index 2f24eb7de8f589119c3c97948a9bac0da6b5d82f..8f12d0a0af4dfae20757ddebdd76032699c0099f 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -5,13 +5,15 @@ LIBDIVECOMPUTERDIR = /usr/local
 LIBDIVECOMPUTERINCLUDES = $(LIBDIVECOMPUTERDIR)/include/libdivecomputer
 LIBDIVECOMPUTERARCHIVE = $(LIBDIVECOMPUTERDIR)/lib/libdivecomputer.a
 
+# Add libusb in case of libdivecomputer compiled with usb support.
+LIBS = `pkg-config --libs gtk+-2.0 glib-2.0 gconf-2.0`
+
 OBJS = main.o dive.o profile.o info.o equipment.o divelist.o \
        parse-xml.o save-xml.o libdivecomputer.o print.o uemis.o
 
 subsurface: $(OBJS)
        $(CC) $(LDFLAGS) -o subsurface $(OBJS) \
-               `xml2-config --libs` \
-               `pkg-config --libs gtk+-2.0 glib-2.0 gconf-2.0` \
+               `xml2-config --libs` $(LIBS) \
                $(LIBDIVECOMPUTERARCHIVE) -lpthread
 
 parse-xml.o: parse-xml.c dive.h