List of VNDK-related libs are exported to make

LL-NDK, VNDK-core, VNDK-SP libraries are exported to make as
SOONG_LLNDK_LIBRARIES, SOONG_VNDK_CORE_LIBRARIES, and
SOONG_VNDK_SAMEPROCESS_LIBRARIES. This can be used to auto-generate
ld.config.txt from a template.

Bug: 64013660
Test: BOARD_VNDK_VERSION=current m -j successful
Test: check out/soong/make_vars*.mk and look for SOONG_*_LIBRARIES

Merged-In: I0f4c5d05d9cd28c3fc9fdcca6ce0e6eaeaacbe8d
Change-Id: I0f4c5d05d9cd28c3fc9fdcca6ce0e6eaeaacbe8d
diff --git a/cc/makevars.go b/cc/makevars.go
index 294f3e6..8bdcf9f 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -59,6 +59,10 @@
 		ctx.Strict("BOARD_VNDK_VERSION", "")
 	}
 
+	ctx.Strict("VNDK_CORE_LIBRARIES", strings.Join(vndkCoreLibraries, " "))
+	ctx.Strict("VNDK_SAMEPROCESS_LIBRARIES", strings.Join(vndkSpLibraries, " "))
+	ctx.Strict("LLNDK_LIBRARIES", strings.Join(llndkLibraries, " "))
+
 	ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS", strings.Join(asanCflags, " "))
 	ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS", strings.Join(asanLdflags, " "))
 	ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES", strings.Join(asanLibs, " "))