Add support for creating prebuilt Android.mk files

Add options to the `install()` and `export()` commands to export the
targets we build into Android.mk files that reference them as prebuilt
libraries with associated usage requirements (compile definitions,
include directories, link libraries).  This will allow CMake-built
projects to be imported into projects using the Android NDK build
system.

Closes: #15562

1 files changed, 11 insertions, 2 deletions

diff --git a/Source/cmInstallExportGenerator.cxx b/Source/cmInstallExportGenerator.cxx
index 27628f4..5ea7faf 100644
--- a/Source/cmInstallExportGenerator.cxx
+++ b/Source/cmInstallExportGenerator.cxx
@@ -16,6 +16,9 @@
 #include <sstream>
 #include <utility>
 
+#ifdef CMAKE_BUILD_WITH_CMAKE
+#include "cmExportInstallAndroidMKGenerator.h"
+#endif
 #include "cmExportInstallFileGenerator.h"
 #include "cmExportSet.h"
 #include "cmInstallType.h"
@@ -27,7 +30,7 @@ cmInstallExportGenerator::cmInstallExportGenerator(
   cmExportSet* exportSet, const char* destination,
   const char* file_permissions, std::vector<std::string> const& configurations,
   const char* component, MessageLevel message, bool exclude_from_all,
-  const char* filename, const char* name_space, bool exportOld)
+  const char* filename, const char* name_space, bool exportOld, bool android)
   : cmInstallGenerator(destination, configurations, component, message,
                        exclude_from_all)
   , ExportSet(exportSet)
@@ -37,7 +40,13 @@ cmInstallExportGenerator::cmInstallExportGenerator(
   , ExportOld(exportOld)
   , LocalGenerator(CM_NULLPTR)
 {
-  this->EFGen = new cmExportInstallFileGenerator(this);
+  if (android) {
+#ifdef CMAKE_BUILD_WITH_CMAKE
+    this->EFGen = new cmExportInstallAndroidMKGenerator(this);
+#endif
+  } else {
+    this->EFGen = new cmExportInstallFileGenerator(this);
+  }
   exportSet->AddInstallation(this);
 }