allow LDFLAGS to be set by user

Move old LDFLAGS variable to LDLIBS. By doing ths, a user can set their
own LDFLAGS without breaking the build. A case in which this can be
useful is hardening with debian, e.g.

    $ dpkg-buildflags --get LDFLAGS
    -Wl,-z,relro

Makefile

@@ -11,7 +11,7 @@ endif
 all: obj i2p
 
 i2p: $(OBJECTS:obj/%=obj/%)
-	$(CXX) -o $@ $^ $(LDFLAGS) $(LIBS)
+	$(CXX) -o $@ $^ $(LDLIBS) $(LDFLAGS) $(LIBS)
 
 .SUFFIXES:
 .SUFFIXES:	.c .cc .C .cpp .o

Makefile.bsd

@@ -3,5 +3,6 @@ CXXFLAGS = -O2
 NEEDED_CXXFLAGS = -std=c++11
 include filelist.mk
 INCFLAGS = -I/usr/include/ -I/usr/local/include/
-LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib -lcryptopp -lboost_system -lboost_date_time -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
+LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib
+LDLIBS = -lcryptopp -lboost_system -lboost_date_time -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
 LIBS =

Makefile.linux

@@ -19,7 +19,7 @@ endif
 
 include filelist.mk
 INCFLAGS =
-LDFLAGS = -lcryptopp -lboost_system -lboost_date_time -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
+LDLIBS = -lcryptopp -lboost_system -lboost_date_time -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
 LIBS =
 
 

Makefile.osx

@@ -2,7 +2,8 @@ CXX = clang++
 CXXFLAGS = -g -Wall -std=c++11 -lstdc++ -I/usr/local/include
 include filelist.mk
 INCFLAGS = -DCRYPTOPP_DISABLE_ASM
-LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib -lcryptopp -lboost_system -lboost_date_time -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
+LDFLAGS = -Wl,-rpath,/usr/local/lib -L/usr/local/lib
+LDLIBS = -lcryptopp -lboost_system -lboost_date_time -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
 LIBS =
 
 # OSX Notes