ENH: Test export/import of link interface languages

This extends the ExportImport test.  The Export project creates a C++
static library and exports it.  Then the Import project links the
library into a C executable.  On most platforms the executable will link
only if the C++ linker is chosen correctly.

3 files changed, 6 insertions, 3 deletions

diff --git a/Tests/ExportImport/Import/A/CMakeLists.txt b/Tests/ExportImport/Import/A/CMakeLists.txt
index e874cdb..f6536df 100644
--- a/Tests/ExportImport/Import/A/CMakeLists.txt
+++ b/Tests/ExportImport/Import/A/CMakeLists.txt
@@ -28,6 +28,7 @@ target_link_libraries(imp_testExe1
   exp_testLib3
   exp_testLib4
   exp_testLib5
+  exp_testLib6
   )
 
 # Try building a plugin to an executable imported from the install tree.
@@ -58,6 +59,7 @@ target_link_libraries(imp_testExe1b
   bld_testLib3
   bld_testLib4
   bld_testLib5
+  bld_testLib6
   )
 
 # Try building a plugin to an executable imported from the build tree.
diff --git a/Tests/ExportImport/Import/A/imp_testExe1.c b/Tests/ExportImport/Import/A/imp_testExe1.c
index 6a6ba0f..b690d99 100644
--- a/Tests/ExportImport/Import/A/imp_testExe1.c
+++ b/Tests/ExportImport/Import/A/imp_testExe1.c
@@ -5,6 +5,7 @@ extern int testLib3();
 extern int testLib4();
 extern int testLib4lib();
 extern int testLib5();
+extern int testLib6();
 
 /* Switch a symbol between debug and optimized builds to make sure the
    proper library is found from the testLib4 link interface.  */
@@ -18,6 +19,6 @@ extern testLib4libcfg(void);
 int main()
 {
   return (testLib2() + generated_by_testExe1() + testLib3() + testLib4()
-          + testLib5()
+          + testLib5() + testLib6()
           + generated_by_testExe3() + testLib4lib() + testLib4libcfg());
 }
diff --git a/Tests/ExportImport/Import/CMakeLists.txt b/Tests/ExportImport/Import/CMakeLists.txt
index eb3a954..3fc78a2 100644
--- a/Tests/ExportImport/Import/CMakeLists.txt
+++ b/Tests/ExportImport/Import/CMakeLists.txt
@@ -1,5 +1,5 @@
-cmake_minimum_required (VERSION 2.6)
-project(Import C)
+cmake_minimum_required (VERSION 2.7.20090711)
+project(Import C CXX)
 
 # Import everything in a subdirectory.
 add_subdirectory(A)