Add rules to build dependencies of libhamlib.la in other directories

This makes it possible to run "make -C src/" or "make -C tests/ rigctl"
or "make -C bindings/ check" (and so on) in a clean tree, but it doesn't
rebuild those targets if libhamlib.la is changed; for this run make from
the top directory as usual, to rebuild all SUBDIRS if needed.

bindings/Makefile.am

@@ -30,6 +30,8 @@ example_DATA =
 BUILT_SOURCES =
 MOSTLYCLEANFILES =
 
+$(top_builddir)/src/libhamlib.la:
+	$(MAKE) -C $(top_builddir)/src/ libhamlib.la
 
 if ENABLE_PERL
 ##########################################

c++/Makefile.am

@@ -15,6 +15,8 @@ check_SCRIPTS = testcpp.sh
 
 TESTS = $(check_SCRIPTS)
 
+$(top_builddir)/src/libhamlib.la:
+	$(MAKE) -C $(top_builddir)/src/ libhamlib.la
 
 testcpp.sh:
 	echo 'LD_LIBRARY_PATH=$(top_builddir)/c++/.libs:$(top_builddir)/dummy/.libs ./testcpp' > testcpp.sh

simulators/Makefile.am

@@ -44,5 +44,7 @@ EXTRA_DIST =
 
 #TESTS = $(check_SCRIPTS)
 
+$(top_builddir)/src/libhamlib.la:
+	$(MAKE) -C $(top_builddir)/src/ libhamlib.la
 
 CLEANFILES = simelelecraft simicgeneric simkenwood simyaesu

src/Makefile.am

@@ -27,6 +27,15 @@ libhamlib_la_LIBADD = $(top_builddir)/lib/libmisc.la $(top_builddir)/security/li
 
 libhamlib_la_DEPENDENCIES = $(top_builddir)/lib/libmisc.la $(top_builddir)/security/libsecurity.la $(BACKENDEPS) $(RIG_BACKENDEPS) $(ROT_BACKENDEPS) $(AMP_BACKENDEPS) 
 
+# Rule to build the dependencies of libhamlib.la that are not in this directory
+# when running make in this directory instead of top_builddir
+# (the % matches any number of subdirectories)
+# warning: '%'-style pattern rules are a GNU make extension
+$(top_builddir)/%.la:
+	$(MAKE) -C $(@D) $(@F)
+
+#
+
 EXTRA_DIST = Android.mk hamlibdatetime.h.in band_changed.c
 
 

tests/Makefile.am

@@ -110,6 +110,8 @@ check_SCRIPTS = testrig.sh testfreq.sh testbcd.sh testloc.sh testrigcaps.sh test
 
 TESTS = $(check_SCRIPTS)
 
+$(top_builddir)/src/libhamlib.la:
+	$(MAKE) -C $(top_builddir)/src/ libhamlib.la
 
 testrig.sh:
 	echo 'LD_LIBRARY_PATH=$(top_builddir)/src/.libs:$(top_builddir)/dummy/.libs ./testrig 1' > testrig.sh