Build libiperf3 as both a shared library and a static library by defa…

…ult.

Use --disable-static or --disable-shared to build only one flavor
of libraries.

Tested on MacOS, FreeBSD, and CentOS 6 Linux.

Resolves esnet#146.

Originally submitted by:	@i2aaron

.gitignore

@@ -1,5 +1,7 @@
 *~
 *.a
+*.la
+*.lo
 *.o
 *.orig
 *.Po
@@ -9,6 +11,8 @@ config/test-driver
 config.log
 config.status
 libtool
+src/.deps
+src/.libs
 src/config.h
 src/stamp-h1
 src/iperf3

src/Makefile.am

@@ -1,13 +1,14 @@
-lib_LIBRARIES           = libiperf.a                                    # Build and install a static iperf library
+lib_LTLIBRARIES         = libiperf.la                                   # Build and install an iperf library
 bin_PROGRAMS            = iperf3                                        # Build and install an iperf binary
 noinst_PROGRAMS         = t_timer t_units t_uuid iperf3_profile         # Build, but don't install the test programs and a profiled version of iperf3
 include_HEADERS         = iperf_api.h # Defines the headers that get installed with the program
 
 
 # Specify the source files and flags for the iperf library
-libiperf_a_SOURCES      = \
+libiperf_la_SOURCES     = \
                         cjson.c \
                         cjson.h \
+                        flowlabel.h \
                         iperf.h \
                         iperf_api.c \
                         iperf_api.h \
@@ -39,33 +40,33 @@ libiperf_a_SOURCES      = \
 # Specify the sources and various flags for the iperf binary
 iperf3_SOURCES          = main.c
 iperf3_CFLAGS           = -g -Wall
-iperf3_LDADD            = libiperf.a
+iperf3_LDADD            = libiperf.la
 iperf3_LDFLAGS          = -g
 
 # Specify the sources and various flags for the profiled iperf binary. This
 # binary recompiles all the source files to make sure they are all profiled.
 iperf3_profile_SOURCES  = main.c \
-						  $(libiperf_a_SOURCES)
+						  $(libiperf_la_SOURCES)
 
 iperf3_profile_CFLAGS   = -pg -g -Wall
-iperf3_profile_LDADD    = libiperf.a
+iperf3_profile_LDADD    = libiperf.la
 iperf3_profile_LDFLAGS  = -pg -g
 
 # Specify the sources and various flags for the test cases
 t_timer_SOURCES         = t_timer.c
 t_timer_CFLAGS          = -g -Wall
-t_timer_LDFLAGS         = iperf_error.o
-t_timer_LDADD           = libiperf.a
+t_timer_LDFLAGS         =
+t_timer_LDADD           = libiperf.la
 
 t_units_SOURCES         = t_units.c
 t_units_CFLAGS          = -g -Wall
 t_units_LDFLAGS         =
-t_units_LDADD           = libiperf.a
+t_units_LDADD           = libiperf.la
 
 t_uuid_SOURCES          = t_uuid.c
 t_uuid_CFLAGS           = -g -Wall
 t_uuid_LDFLAGS          =
-t_uuid_LDADD            = libiperf.a
+t_uuid_LDADD            = libiperf.la