Use llvm toolchain for entirety of android build.

python/servo/build_commands.py

@@ -352,7 +352,6 @@ class MachCommands(CommandBase):
                     sys.exit(1)
 
             env["RUST_TARGET"] = target
-            env["ANDROID_TOOLCHAIN_NAME"] = android_toolchain_name
             with cd(openssl_dir):
                 status = call(
                     make_cmd + ["-f", "openssl.makefile"],
@@ -386,9 +385,7 @@ class MachCommands(CommandBase):
                                       android_toolchain_prefix + "-4.9", "prebuilt", host)
             gcc_libs = path.join(gcc_toolchain, "lib", "gcc", android_toolchain_name, "4.9.x")
 
-            env['PATH'] = (path.join(llvm_toolchain, "bin") + ':'
-                           + path.join(gcc_toolchain, "bin") + ':'
-                           + env['PATH'])
+            env['PATH'] = (path.join(llvm_toolchain, "bin") + ':' + env['PATH'])
             env['ANDROID_SYSROOT'] = path.join(env['ANDROID_NDK'], "sysroot")
             support_include = path.join(env['ANDROID_NDK'], "sources", "android", "support", "include")
             cpufeatures_include = path.join(env['ANDROID_NDK'], "sources", "android", "cpufeatures")
@@ -468,7 +465,6 @@ class MachCommands(CommandBase):
             env["NDK_ANDROID_VERSION"] = android_api
             env["ANDROID_ABI"] = android_lib
             env["ANDROID_PLATFORM"] = android_platform
-            env["ANDROID_TOOLCHAIN_NAME"] = "clang"
             env["NDK_CMAKE_TOOLCHAIN_FILE"] = path.join(env['ANDROID_NDK'], "build", "cmake", "android.toolchain.cmake")
             env["CMAKE_TOOLCHAIN_FILE"] = path.join(self.android_support_dir(), "toolchain.cmake")
             # Set output dir for gradle aar files

support/android/fakeld/fake-ld-arm.sh

@@ -11,5 +11,4 @@ set -o pipefail
 source ./support/android/fakeld/fake-ld.sh
 
 export _GCC_PARAMS="${@}"
-call_gcc "arch-arm" "arm-linux-androideabi" "android-21" "armeabi" \
-         "arm-linux-androideabi"
+call_gcc "arch-arm" "armeabi" "arm-linux-androideabi"

support/android/fakeld/fake-ld-arm64.sh

@@ -11,5 +11,4 @@ set -o pipefail
 source ./support/android/fakeld/fake-ld.sh
 
 export _GCC_PARAMS="${@}"
-call_gcc "arch-arm64" "aarch64-linux-android" "android-21" "arm64-v8a" \
-         "aarch64-linux-android"
+call_gcc "arch-arm64" "arm64-v8a" "aarch64-linux-android"

support/android/fakeld/fake-ld-armv7.sh

@@ -11,5 +11,4 @@ set -o pipefail
 source ./support/android/fakeld/fake-ld.sh
 
 export _GCC_PARAMS="${@}"
-call_gcc "arch-arm" "arm-linux-androideabi" "android-21" "armeabi-v7a" \
-         "arm-linux-androideabi"
+call_gcc "arch-arm" "armeabi-v7a" "armv7-linux-androideabi"

support/android/fakeld/fake-ld-x86.sh

@@ -11,4 +11,4 @@ set -o pipefail
 source ./support/android/fakeld/fake-ld.sh
 
 export _GCC_PARAMS="${@}"
-call_gcc "arch-x86" "x86" "android-21" "x86" "i686-linux-android"
+call_gcc "arch-x86" "x86" "i686-linux-android"

support/android/fakeld/fake-ld.sh

@@ -13,25 +13,27 @@ call_gcc()
   TARGET_DIR="${OUT_DIR}/../../.."
 
   export _ANDROID_ARCH=$1
-  export _ANDROID_EABI=$2
-  export _ANDROID_PLATFORM=$3
-  export ANDROID_SYSROOT="${ANDROID_NDK}/platforms/${_ANDROID_PLATFORM}/${_ANDROID_ARCH}"
+  export _ANDROID_TARGET=$3
+  export ANDROID_SYSROOT="${ANDROID_NDK}/platforms/${ANDROID_PLATFORM}/${_ANDROID_ARCH}"
   ANDROID_TOOLCHAIN=""
   for host in "linux-x86_64" "linux-x86" "darwin-x86_64" "darwin-x86"; do
-    if [[ -d "${ANDROID_NDK}/toolchains/${_ANDROID_EABI}-4.9/prebuilt/${host}/bin" ]]; then
-      ANDROID_TOOLCHAIN="${ANDROID_NDK}/toolchains/${_ANDROID_EABI}-4.9/prebuilt/${host}/bin"
+    if [[ -d "${ANDROID_NDK}/toolchains/llvm/prebuilt/${host}/bin" ]]; then
+      ANDROID_TOOLCHAIN="${ANDROID_NDK}/toolchains/llvm/prebuilt/${host}/bin"
       break
     fi
   done
 
-  ANDROID_CPU_ARCH_DIR=$4
+  ANDROID_CPU_ARCH_DIR=$2
   ANDROID_CXX_LIBS="${ANDROID_NDK}/sources/cxx-stl/llvm-libc++/libs/${ANDROID_CPU_ARCH_DIR}"
 
   echo "toolchain: ${ANDROID_TOOLCHAIN}"
   echo "libs dir: ${ANDROID_CXX_LIBS}"
   echo "sysroot: ${ANDROID_SYSROOT}"
-  echo "targetdir: ${ANDROID_CXX_LIBS}"
+  echo "targetdir: ${TARGET_DIR}"
 
-  "${ANDROID_TOOLCHAIN}/$5-gcc" \
-    --sysroot="${ANDROID_SYSROOT}" -L "${ANDROID_CXX_LIBS}" ${_GCC_PARAMS} -lc++
+  "${ANDROID_TOOLCHAIN}/clang" \
+      --sysroot="${ANDROID_SYSROOT}" \
+      --gcc-toolchain="${GCC_TOOLCHAIN}" \
+      --target="${_ANDROID_TARGET}" \
+      -L "${ANDROID_CXX_LIBS}" ${_GCC_PARAMS} -lc++
 }

support/android/toolchain.cmake

@@ -1,6 +1,6 @@
 set(CMAKE_VERBOSE_MAKEFILE ON)
 set(ANDROID_ABI $ENV{ANDROID_ABI})
-set(ANDROID_TOOLCHAIN_NAME $ENV{ANDROID_TOOLCHAIN_NAME})
+set(ANDROID_TOOLCHAIN_NAME clang)
 set(ANDROID_PLATFORM $ENV{ANDROID_PLATFORM})
 
 include($ENV{NDK_CMAKE_TOOLCHAIN_FILE})