libctrl: autotools build system integration

Now we actually build the recently-imported libctrl
diff --git a/Makefile.am b/Makefile.am
index 717d3db..f2899cc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,11 +1,11 @@
 ACLOCAL_AMFLAGS = -I m4
 
 AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
-SUBDIRS = include src src/vty src/codec src/gsm src/gb tests utils
+SUBDIRS = include src src/vty src/codec src/gsm src/gb src/ctrl tests utils
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libosmocore.pc libosmocodec.pc libosmovty.pc libosmogsm.pc \
-		 libosmogb.pc
+		 libosmogb.pc libosmoctrl.pc
 
 BUILT_SOURCES = $(top_srcdir)/.version
 $(top_srcdir)/.version:
diff --git a/configure.ac b/configure.ac
index eaaab50..deaa8bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -186,12 +186,14 @@
 	libosmovty.pc
 	libosmogsm.pc
 	libosmogb.pc
+	libosmoctrl.pc
 	include/Makefile
 	src/Makefile
 	src/vty/Makefile
 	src/codec/Makefile
 	src/gsm/Makefile
 	src/gb/Makefile
+	src/ctrl/Makefile
 	tests/Makefile
 	utils/Makefile
 	Doxyfile.core
diff --git a/include/Makefile.am b/include/Makefile.am
index 03d21f4..6f14cb0 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -37,6 +37,8 @@
                        osmocom/core/write_queue.h \
                        osmocom/crypt/auth.h \
                        osmocom/crypt/gprs_cipher.h \
+		       osmocom/ctrl/control_cmd.h \
+		       osmocom/ctrl/control_if.h \
                        osmocom/gprs/gprs_bssgp.h \
                        osmocom/gprs/gprs_bssgp_bss.h \
                        osmocom/gprs/gprs_msgb.h \
diff --git a/libosmoctrl.pc.in b/libosmoctrl.pc.in
new file mode 100644
index 0000000..ce44819
--- /dev/null
+++ b/libosmoctrl.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: Osmocom Control Interface Library
+Description: C Utility Library
+Version: @VERSION@
+Libs: -L${libdir} -losmoctrl
+Cflags: -I${includedir}/
+
diff --git a/src/ctrl/Makefile.am b/src/ctrl/Makefile.am
index 4f039c8..29a8ee2 100644
--- a/src/ctrl/Makefile.am
+++ b/src/ctrl/Makefile.am
@@ -1,7 +1,12 @@
-AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOABIS_CFLAGS) $(COVERAGE_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOABIS_LIBS) $(COVERAGE_LDFLAGS)
+# This is _NOT_ the library release version, it's an API version.
+# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
+LIBVERSION=0:0:0
 
-noinst_LIBRARIES = libctrl.a
+AM_CFLAGS = -Wall $(all_includes) -I$(top_srcdir)/include
 
-libctrl_a_SOURCES =	control_if.c control_cmd.c
+lib_LTLIBRARIES = libosmoctrl.la
+
+libosmoctrl_la_SOURCES = control_cmd.c control_if.c
+
+libosmoctrl_la_LDFLAGS = $(LTLDFLAGS_OSMOCTRL) -version-info $(LIBVERSION) -no-undefined
+libosmoctrl_la_LIBADD = $(top_builddir)/src/libosmocore.la