Fix failing test for <ParentPackage>Config.cmake missing subpackage i…

…ncludes (#299)

This sets <ParentPackage>_ENABLE_<SubPackage>=ON if the subpackage is enabled
even if optional packages are disabled.  This will fix trilinos/Trilinos#9972
and trilinos/Trilinos#9973.

This also updates the logic that generates <Package>Config.cmake files to only
include <UpstreamPackage>Config.cmake files for direct dependencies, not all
dependencies.  (The indirect includes should take care of the rest.)

test/core/ExamplesUnitTests/TribitsExampleApp_Tests.cmake

@@ -469,6 +469,12 @@ function(TribitsExampleApp_NoOptionalPackages_test byProjectOrPackage sharedOrSt
         ${buildSharedLibsArg}
         -DCMAKE_INSTALL_PREFIX=${testDir}/install
         ${${PROJECT_NAME}_TRIBITS_DIR}/examples/TribitsExampleProject
+      PASS_REGULAR_EXPRESSION_ALL
+        "-- Setting TribitsExProj_ENABLE_WithSubpackages=ON because TribitsExProj_ENABLE_WithSubpackagesA=ON"
+        "-- Setting WithSubpackages_ENABLE_WithSubpackagesA=ON because TribitsExProj_ENABLE_WithSubpackagesA=ON"
+        "-- Setting WithSubpackages_ENABLE_WithSubpackagesB=ON because TribitsExProj_ENABLE_WithSubpackagesB=ON"
+        "-- Setting WithSubpackages_ENABLE_WithSubpackagesC=ON because TribitsExProj_ENABLE_WithSubpackagesC=ON"
+      ALWAYS_FAIL_ON_NONZERO_RETURN
 
     TEST_1
       MESSAGE "Build and install TribitsExampleProject locally"

tribits/core/package_arch/TribitsAdjustPackageEnables.cmake

@@ -57,6 +57,7 @@ include(MessageWrapper)
 include(DualScopeSet)
 include(CMakeParseArguments)
 
+
 #
 # Private helper macros
 #
@@ -314,7 +315,6 @@ macro(tribits_disable_parents_subpackages PARENT_PACKAGE_NAME)
 endmacro()
 
 
-#
 # Macro that enables all of the subpackages of a parent package.
 #
 macro(tribits_enable_parents_subpackages PARENT_PACKAGE_NAME)
@@ -698,6 +698,8 @@ macro(tribits_postprocess_package_with_subpackages_enables  PACKAGE_NAME)
         "Setting ${PROJECT_NAME}_ENABLE_${PACKAGE_NAME}=ON"
         " because ${PROJECT_NAME}_ENABLE_${SUBPACKAGE_FULLNAME}=ON")
       set(${PROJECT_NAME}_ENABLE_${PACKAGE_NAME} ON)
+      tribits_postprocess_package_with_subpackages_optional_subpackage_enables(
+        ${PACKAGE_NAME})
       tribits_postprocess_package_with_subpackages_test_example_enables(
         ${PACKAGE_NAME}  TESTS)
       tribits_postprocess_package_with_subpackages_test_example_enables(
@@ -711,6 +713,27 @@ macro(tribits_postprocess_package_with_subpackages_enables  PACKAGE_NAME)
 endmacro()
 
 
+# Set <ParentPackage>_ENABLE_<SubPackage>=ON if not already enabled for all
+# subpackages of a parent package.
+#
+macro(tribits_postprocess_package_with_subpackages_optional_subpackage_enables
+    PACKAGE_NAME
+  )
+  #message("TRIBITS_POSTPROCESS_PACKAGE_WITH_SUBPACKAGES_TEST_EXAMPLE_ENABLES  '${PACKAGE_NAME}'")
+  foreach(TRIBITS_SUBPACKAGE ${${PACKAGE_NAME}_SUBPACKAGES})
+    set(SUBPACKAGE_FULLNAME ${PACKAGE_NAME}${TRIBITS_SUBPACKAGE})
+    if (${PROJECT_NAME}_ENABLE_${SUBPACKAGE_FULLNAME}
+      AND "${${PACKAGE_NAME}_ENABLE_${SUBPACKAGE_FULLNAME}}" STREQUAL ""
+      )
+      message("-- "
+        "Setting ${PACKAGE_NAME}_ENABLE_${SUBPACKAGE_FULLNAME}=ON"
+        " because ${PROJECT_NAME}_ENABLE_${SUBPACKAGE_FULLNAME}=ON")
+      set(${PACKAGE_NAME}_ENABLE_${SUBPACKAGE_FULLNAME} ON)
+    endif()
+  endforeach()
+endmacro()
+
+
 # Set the parent package tests/examples enables if one subpackage is enabled
 # and has its tests/examples
 #

tribits/core/package_arch/TribitsWriteClientExportFiles.cmake

@@ -537,10 +537,17 @@ function(tribits_append_dependent_package_config_file_includes packageName)
   # Include configurations of dependent packages
   string(APPEND configFileStr
     "# Include configuration of dependent packages\n")
-  foreach(depPkg IN LISTS ${packageName}_FULL_ENABLED_DEP_PACKAGES)
-    set(cmakePkgDir "${pkgConfigFileBaseDir}/${depPkg}")
+  foreach(depPkg IN LISTS ${packageName}_LIB_REQUIRED_DEP_PACKAGES)
+    set(cmakeTplDir "${pkgConfigFileBaseDir}/${depPkg}")
     string(APPEND configFileStr
-      "include(\"${cmakePkgDir}/${depPkg}Config.cmake\")\n")
+      "include(\"${cmakeTplDir}/${depPkg}Config.cmake\")\n")
+  endforeach()
+  foreach(depPkg IN LISTS ${packageName}_LIB_OPTIONAL_DEP_PACKAGES)
+    if (${packageName}_ENABLE_${depPkg})
+      set(cmakeTplDir "${pkgConfigFileBaseDir}/${depPkg}")
+      string(APPEND configFileStr
+        "include(\"${cmakeTplDir}/${depPkg}Config.cmake\")\n")
+    endif()
   endforeach()
 
   # Include configurations of dependent external packages/TPLs