gn: Trim target prefix from static and shared libraries

If the target name matches the package directory.
Reduces stuttering in target names.

Change-Id: I6cf01ac22c4998f4b862135b13b8503bdd92bdd0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/79080
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

scripts/dawn_component.gni

@@ -23,8 +23,12 @@ import("dawn_overrides_with_defaults.gni")
 # Template that produces static and shared versions of the same library as well
 # as a target similar to Chromium's component targets.
 #  - The shared version exports symbols and has dependent import the symbols
-#    as libname.so with target name libname_shared
-#  - The static library doesn't export symbols nor make dependents import them
+#    as libname.so. If the target name matches the package directory name, then
+#    the shared library target will be named 'shared', otherwise
+#    '${target_name}_shared'.
+#  - The static library doesn't export symbols nor make dependents import them.
+#    If the target name matches the package directory name, then the static
+#    library target will be named 'static', otherwise '${target_name}_static'.
 #  - The libname target is similar to a Chromium component and is an alias for
 #    either the static or the shared library.
 #
@@ -51,9 +55,16 @@ template("dawn_component") {
   # definition of targets.
   name = target_name
 
+  prefix = "${name}_"
+
+  # Remove prefix if the target name matches directory
+  if (get_label_info(get_label_info(":$target_name", "dir"), "name") == name) {
+    prefix = ""
+  }
+
   # The config that will apply to dependents of the shared library so they know
   # they should "import" the symbols
-  config("${name}_shared_public_config") {
+  config("${prefix}shared_public_config") {
     defines = [ "${invoker.DEFINE_PREFIX}_SHARED_LIBRARY" ]
 
     # Executable needs an rpath to find our shared libraries on OSX and Linux
@@ -68,7 +79,7 @@ template("dawn_component") {
     }
   }
 
-  shared_library("${name}_shared") {
+  shared_library("${prefix}shared") {
     # The "tool" for creating shared libraries will automatically add the "lib" prefix
     output_name = name
 
@@ -90,7 +101,7 @@ template("dawn_component") {
     if (!defined(public_configs)) {
       public_configs = []
     }
-    public_configs += [ ":${name}_shared_public_config" ]
+    public_configs += [ ":${prefix}shared_public_config" ]
 
     # Tell sources of this library to export the symbols (and not import)
     if (!defined(defines)) {
@@ -107,7 +118,7 @@ template("dawn_component") {
     }
   }
 
-  static_library("${name}_static") {
+  static_library("${prefix}static") {
     output_name = name + "_static"
 
     complete_static_lib = dawn_complete_static_libs
@@ -121,9 +132,9 @@ template("dawn_component") {
 
   group(name) {
     if (is_component_build) {
-      public_deps = [ ":${name}_shared" ]
+      public_deps = [ ":${prefix}shared" ]
     } else {
-      public_deps = [ ":${name}_static" ]
+      public_deps = [ ":${prefix}static" ]
     }
   }
 }

src/dawn_native/BUILD.gn

@@ -770,7 +770,7 @@ dawn_component("webgpu_dawn") {
 
   sources = get_target_outputs(":webgpu_dawn_native_proc_gen")
   deps = [
-    ":dawn_native_static",
+    ":static",
     ":webgpu_dawn_native_proc_gen",
   ]
 }

src/fuzzers/dawn/BUILD.gn

@@ -79,8 +79,8 @@ static_library("dawn_wire_server_fuzzer_common") {
     "${dawn_root}/src/dawn:dawncpp",
     "${dawn_root}/src/dawn/common",
     "${dawn_root}/src/dawn/utils",
-    "${dawn_root}/src/dawn_native:dawn_native_static",
-    "${dawn_root}/src/dawn_wire:dawn_wire_static",
+    "${dawn_root}/src/dawn_native:static",
+    "${dawn_root}/src/dawn_wire:static",
   ]
 }
 

src/tests/BUILD.gn

@@ -135,7 +135,7 @@ source_set("dawn_native_mocks_sources") {
     ":gmock_and_gtest",
     "${dawn_root}/src/dawn/utils",
     "${dawn_root}/src/dawn_native:dawn_native_sources",
-    "${dawn_root}/src/dawn_native:dawn_native_static",
+    "${dawn_root}/src/dawn_native:static",
   ]
 
   # Add internal dawn_native config for internal unittests.
@@ -171,7 +171,7 @@ test("dawn_unittests") {
     "${dawn_root}/src/dawn/common",
     "${dawn_root}/src/dawn/utils",
     "${dawn_root}/src/dawn_native:dawn_native_sources",
-    "${dawn_root}/src/dawn_native:dawn_native_static",
+    "${dawn_root}/src/dawn_native:static",
     "${dawn_root}/src/dawn_wire",
   ]
 
@@ -329,7 +329,7 @@ source_set("dawn_end2end_tests_sources") {
 
     # Statically linked because the end2end white_box tests use Dawn internals.
     "${dawn_root}/src/dawn/utils",
-    "${dawn_root}/src/dawn_native:dawn_native_static",
+    "${dawn_root}/src/dawn_native:static",
     "${dawn_root}/src/dawn_wire",
   ]
 
@@ -478,7 +478,7 @@ source_set("dawn_white_box_tests_sources") {
 
     # Statically linked because the end2end white_box tests use Dawn internals.
     "${dawn_root}/src/dawn/utils",
-    "${dawn_root}/src/dawn_native:dawn_native_static",
+    "${dawn_root}/src/dawn_native:static",
     "${dawn_root}/src/dawn_wire",
   ]
 
@@ -552,7 +552,7 @@ test("dawn_end2end_tests") {
     "${dawn_root}/src/dawn:dawncpp",
     "${dawn_root}/src/dawn/common",
     "${dawn_root}/src/dawn/utils",
-    "${dawn_root}/src/dawn_native:dawn_native_static",
+    "${dawn_root}/src/dawn_native:static",
     "${dawn_root}/src/dawn_wire",
   ]