Fixed SWIG go for cases when SWIG %import-s another package which is located in a subdirectory.

Examples/Makefile.in

@@ -1818,14 +1818,21 @@ go: $(SRCDIR_SRCS)
 go_cpp: $(SRCDIR_SRCS)
 	$(SWIG) -go -c++ $(GOOPT) $(GOSWIGARG) $(SWIGOPT) -o $(ICXXSRCS) $(INTERFACEPATH)
 	if $(GO12) || $(GO13) || $(GOGCC); then \
-	  $(CXX) -g -c $(CPPFLAGS) $(CXXFLAGS) $(SRCDIR_SRCS) $(SRCDIR_CXXSRCS) $(ICXXSRCS) $(INCLUDES); \
+	  ${foreach f,$(SRCDIR_CXXSRCS) $(SRCDIR_SRCS) $(ICXXSRCS), \
+	    $(CXX) -g -c $(CPPFLAGS) $(CXXFLAGS) -o ${addsuffix .o,${basename $f}} $f $(INCLUDES); \
+	  } \
 	else \
 	  $(CXX) -g -c $(CCSHARED) $(CPPFLAGS) $(CXXFLAGS) $(SRCDIR_SRCS) $(SRCDIR_CXXSRCS) $(ICXXSRCS) $(INCLUDES); \
 	  $(CXXSHARED) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(IOBJS) $(LIBS) $(CPP_DLLIBS) -o $(LIBPREFIX)$(TARGET)$(SO); \
 	fi
-	$(COMPILETOOL) $(GO) $(GOCOMPILEARG) -I . $(GOSRCS)
+	${foreach f,$(GOSRCS), \
+	  $(COMPILETOOL) $(GO) $(GOCOMPILEARG) -I . -o ${addsuffix .$(GOOBJEXT),${basename $f}} $f \
+	}
 	if ! $(GOGCC) ; then \
-	  $(COMPILETOOL) $(GOTOOL) $(GOC) -I $${GOROOT:-`go env GOROOT`}/pkg/$${GOOS:-`go env GOOS`}_$${GOARCH:-`go env GOARCH`} $(GOCSRCS); \
+	  ${foreach f,$(GOCSRCS), \
+	    $(COMPILETOOL) $(GOTOOL) $(GOC) -I $${GOROOT:-`go env GOROOT`}/pkg/$${GOOS:-`go env GOOS`}_$${GOARCH:-`go env GOARCH`} \
+	    -o ${addsuffix .$(GOOBJEXT),${basename $f}} $f; \
+	  } \
 	  rm -f $(GOPACKAGE); \
 	  if $(GO13); then \
 	    cp $(GOGCOBJS) $(GOPACKAGE); \

Examples/test-suite/go/Makefile.in

@@ -28,6 +28,9 @@ CPP_TEST_CASES = \
 	go_inout \
 	go_director_inout
 
+MULTI_CPP_TEST_CASES = \
+	go_subdir_import
+
 include $(srcdir)/../common.mk
 
 .SUFFIXES: .cpptest .ctest .multicpptest
@@ -59,6 +62,25 @@ multi_import.multicpptest:
 	done
 	$(run_multi_testcase)
 
+go_subdir_import.multicpptest:
+	$(setup)
+	mkdir -p testdir/go_subdir_import/
+	$(MAKE) -f $(top_builddir)/$(EXAMPLES)/Makefile SRCDIR="$(SRCDIR)" CXXSRCS="$(CXXSRCS)" \
+	SWIG_LIB="$(SWIG_LIB)" SWIG="$(SWIG)" LIBS='$(LIBS)' \
+	INTERFACEPATH="go_subdir_import_b.i" \
+	INCLUDES="$(INCLUDES)" SWIGOPT="$(SWIGOPT) -outdir ." NOLINK=true \
+	TARGET="$(TARGETPREFIX)go_subdir_import_b$(TARGETSUFFIX)" INTERFACEDIR="$(INTERFACEDIR)" \
+	INTERFACE="testdir/go_subdir_import/go_subdir_import_b.i" \
+	$(LANGUAGE)$(VARIANT)_cpp;
+	for f in testdir/go_subdir_import/go_subdir_import_c go_subdir_import_a ; do \
+	  $(MAKE) -f $(top_builddir)/$(EXAMPLES)/Makefile SRCDIR="$(SRCDIR)" CXXSRCS="$(CXXSRCS)" \
+	  SWIG_LIB="$(SWIG_LIB)" SWIG="$(SWIG)" LIBS='$(LIBS)' \
+	  INCLUDES="$(INCLUDES)" SWIGOPT="$(SWIGOPT)" NOLINK=true \
+	  TARGET="$(TARGETPREFIX)$${f}$(TARGETSUFFIX)" INTERFACEDIR="$(INTERFACEDIR)" INTERFACE="$$f.i" \
+	  $(LANGUAGE)$(VARIANT)_cpp; \
+	done
+	$(run_multi_testcase)
+
 # Runs the testcase.
 run_testcase = \
 	if test -f $(SCRIPTDIR)/$(SCRIPTPREFIX)$*$(SCRIPTSUFFIX); then \
@@ -108,6 +130,7 @@ clean:
 	rm -f mod_a.go mod_b.go imports_a.go imports_b.go
 	rm -f clientdata_prop_a.go clientdata_prop_b.go
 	rm -f multi_import_a.go multi_import_b.go
+	rm -rf go_subdir_import_a.go testdir
 	rm -f packageoption_a.go packageoption_b.go packageoption_c.go
 	rm -f import_stl_a.go import_stl_b.go
 

Examples/test-suite/go/go_subdir_import_runme.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"go_subdir_import_a"
+	"testdir/go_subdir_import/go_subdir_import_b"
+	"testdir/go_subdir_import/go_subdir_import_c"
+)
+
+func main() {
+	b := go_subdir_import_b.NewObjB();
+	c := go_subdir_import_c.NewObjC();
+	v := go_subdir_import_a.AddFive(b, c)
+	if v != 50 {
+		panic(0)
+	}
+}

Examples/test-suite/go_subdir_import.list

@@ -0,0 +1,3 @@
+testdir/go_subdir_import/go_subdir_import_c
+go_subdir_import_b
+go_subdir_import_a

Examples/test-suite/go_subdir_import_a.i

@@ -0,0 +1,37 @@
+/* File : go_subdir_import_a.i */
+
+/*
+ * This files helps check the case where the SWIG-generated .go file needs to
+ * import another, SWIG-generated, module that is in a relative subdirectory.
+ * This case might happen for two different reasons:
+ * 1) Importing a module for which the .i file is in a subdirectory relatively
+ *    to this file (this is tested here with go_subdir_import_c).
+ * 2) Importing a module whos module name is a path (this is tested here with
+ *    go_subdir_import_b).
+ *
+ * This file is the "root" file that imports the two modules which will be
+ * generated (by swig) in a relative subdirectory.
+ */
+%module go_subdir_import_a
+
+%import(module="testdir/go_subdir_import/go_subdir_import_c") "testdir/go_subdir_import/go_subdir_import_c.i"
+%import "go_subdir_import_b.i"
+
+%{
+class ObjC {
+ public:
+  int getInt() const;
+};
+
+class ObjB {
+ public:
+  int getInt() const;
+};
+%}
+
+%inline %{
+int AddFive(const ObjB& b, const ObjC& c) {
+  return b.getInt() + c.getInt() + 5;
+}
+%}
+

Examples/test-suite/go_subdir_import_b.i

@@ -0,0 +1,12 @@
+/* File : go_subdir_import_b.i */
+%module "testdir/go_subdir_import/go_subdir_import_b"
+
+%inline %{
+class ObjB {
+ public:
+  int getInt() const {
+    return 27;
+  }
+};
+%}
+

Examples/test-suite/testdir/go_subdir_import/go_subdir_import_c.i

@@ -0,0 +1,12 @@
+/* File : go_subdir_import_c.i */
+%module go_subdir_import_c
+
+%inline %{
+class ObjC {
+ public:
+  int getInt() const {
+    return 18;
+  }
+};
+%}
+