Ignore shared libs for static executables.

Ie42edc5184f315f998db953594e425214b810e0e added system_shared_libs to
static libraries so that their exported headers can be referenced.
However, it also added unrequired dependencies, which is an
error-triggering issue for static executables.

This change addresses it by adding a condition to shared libs handling code
in binary.go.

Bug: 121152570
Test: cc_test.go, library_test.go
Change-Id: I1828442c4e496f8d815fccaeca970cd5766bdf5d
diff --git a/cc/binary.go b/cc/binary.go
index 6923f2b..bc9abfe 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -299,9 +299,6 @@
 
 	var linkerDeps android.Paths
 
-	sharedLibs := deps.SharedLibs
-	sharedLibs = append(sharedLibs, deps.LateSharedLibs...)
-
 	if deps.LinkerFlagsFile.Valid() {
 		flags.LdFlags = append(flags.LdFlags, "$$(cat "+deps.LinkerFlagsFile.String()+")")
 		linkerDeps = append(linkerDeps, deps.LinkerFlagsFile.Path())
@@ -363,8 +360,15 @@
 		binary.injectHostBionicLinkerSymbols(ctx, outputFile, deps.DynamicLinker.Path(), injectedOutputFile)
 	}
 
-	linkerDeps = append(linkerDeps, deps.SharedLibsDeps...)
-	linkerDeps = append(linkerDeps, deps.LateSharedLibsDeps...)
+	var sharedLibs android.Paths
+	// Ignore shared libs for static executables.
+	if !binary.static() {
+		sharedLibs = deps.SharedLibs
+		sharedLibs = append(sharedLibs, deps.LateSharedLibs...)
+		linkerDeps = append(linkerDeps, deps.SharedLibsDeps...)
+		linkerDeps = append(linkerDeps, deps.LateSharedLibsDeps...)
+	}
+
 	linkerDeps = append(linkerDeps, objs.tidyFiles...)
 	linkerDeps = append(linkerDeps, flags.LdFlagsDeps...)