Support alwayslink cc_library dependencies in objc binaries.

RELNOTES: Support alwayslink cc_library dependencies in objc binaries.

--
MOS_MIGRATED_REVID=121717739

1 files changed, 16 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/objc/CompilationSupport.java b/src/main/java/com/google/devtools/build/lib/rules/objc/CompilationSupport.java
index 395a2beaa2..27dc24bdb9 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/objc/CompilationSupport.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/objc/CompilationSupport.java
@@ -15,6 +15,7 @@
 package com.google.devtools.build.lib.rules.objc;
 
 import static com.google.devtools.build.lib.packages.ImplicitOutputsFunction.fromTemplates;
+import static com.google.devtools.build.lib.rules.cpp.Link.LINK_LIBRARY_FILETYPES;
 import static com.google.devtools.build.lib.rules.objc.ObjcProvider.DEFINE;
 import static com.google.devtools.build.lib.rules.objc.ObjcProvider.FORCE_LOAD_LIBRARY;
 import static com.google.devtools.build.lib.rules.objc.ObjcProvider.FRAMEWORK_DIR;
@@ -173,6 +174,17 @@ public final class CompilationSupport {
       };
 
   /**
+   * Selects cc libraries that have alwayslink=1.
+   */
+  private static final Predicate<Artifact> ALWAYS_LINKED_CC_LIBRARY =
+      new Predicate<Artifact>() {
+        @Override
+        public boolean apply(Artifact input) {
+          return LINK_LIBRARY_FILETYPES.matches(input.getFilename());
+        }
+      };
+
+  /**
    * Defines a library that contains the transitive closure of dependencies.
    */
   public static final SafeImplicitOutputsFunction FULLY_LINKED_LIB =
@@ -1071,9 +1083,13 @@ public final class CompilationSupport {
           .addExecPaths(ccLibraries);
     }
 
+    Iterable<Artifact> ccLibrariesToForceLoad =
+        Iterables.filter(ccLibraries, ALWAYS_LINKED_CC_LIBRARY);
+
     commandLine
         .addExecPath("-o", linkedBinary)
         .addBeforeEach("-force_load", Artifact.toExecPaths(objcProvider.get(FORCE_LOAD_LIBRARY)))
+        .addBeforeEach("-force_load", Artifact.toExecPaths(ccLibrariesToForceLoad))
         .add(extraLinkArgs)
         .add(objcProvider.get(ObjcProvider.LINKOPT));