From 37c22f0b1909c9f63acb5d6258621b77a0b3c56c Mon Sep 17 00:00:00 2001
From: weichaox <wangweichao2@huawei.com>
Date: Wed, 28 Jul 2021 09:22:21 +0800
Subject: [PATCH] update musl build target

Signed-off-by: weichaox <wangweichao2@huawei.com>
Change-Id: Ie4d0365dda47a9f187d9e5022bec642445a4fd56
---
 BUILD.gn          |  41 ++-
 musl_template.gni | 815 +++++++++++++++++++++++-----------------------
 2 files changed, 439 insertions(+), 417 deletions(-)

diff --git a/BUILD.gn b/BUILD.gn
index bc6238f2..0f9cdccc 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1,33 +1,43 @@
 import("musl_template.gni")
 
+musl_abi_target = "soft"
+
 group("musl_all") {
   deps = [
-    ":musl_headers",
-    ":soft_libs",
+    ":a7_hard_neon_libs",
     ":a7_soft_libs",
     ":a7_softfp_neon_libs",
-    ":a7_hard_neon_libs",
+    ":musl_headers",
+    ":soft_libs",
+  ]
+}
+
+group("musl_libs") {
+  deps = [
+    ":${musl_abi_target}_libs",
+    ":musl_headers",
   ]
 }
 
-musl_libs("soft") {
+musl_libs("soft_libs") {
   target_abi = "soft"
 }
 
-musl_libs("a7_soft") {
+musl_libs("a7_soft_libs") {
   target_abi = "a7_soft"
 }
 
-musl_libs("a7_softfp_neon") {
+musl_libs("a7_softfp_neon_libs") {
   target_abi = "a7_softfp_neon-vfpv4"
 }
 
-musl_libs("a7_hard_neon") {
+musl_libs("a7_hard_neon_libs") {
   target_abi = "a7_hard_neon-vfpv4"
 }
 
 group("musl_headers") {
   deps = [
+    ":copy_uapi",
     ":create_alltypes_h",
     ":create_syscall_h",
     ":create_version_h",
@@ -39,16 +49,13 @@ group("musl_headers") {
     ":musl_copy_inc_root",
     ":musl_copy_inc_scsi",
     ":musl_copy_inc_sys",
-    ":copy_uapi",
   ]
 }
 
 action("create_porting_src") {
   script = "scripts/porting.sh"
 
-  sources = [
-    "//third_party/musl",
-  ]
+  sources = [ "//third_party/musl" ]
 
   outdir = [ "${target_out_dir}/${musl_ported_dir}" ]
 
@@ -86,9 +93,9 @@ action("create_porting_src") {
   foreach(s, src_files) {
     outputs += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
   }
- 
+
   args = [ "-i" ] + rebase_path(sources)
-  args += [ "-o" ] + rebase_path(outdir) 
+  args += [ "-o" ] + rebase_path(outdir)
   args += [ "-p" ] + [ "${musl_target_os}" ]
 }
 
@@ -97,8 +104,8 @@ action("create_alltypes_h") {
 
   outputs = [ "${target_out_dir}/${musl_inc_out_dir}/bits/alltypes.h" ]
 
-  sources = [
-    "${target_out_dir}/${musl_ported_dir}/tools/mkalltypes.sed",
+  sources = [ "${target_out_dir}/${musl_ported_dir}/tools/mkalltypes.sed" ]
+  sources += [
     "${target_out_dir}/${musl_ported_dir}/arch/${musl_arch}/bits/alltypes.h.in",
     "${target_out_dir}/${musl_ported_dir}/include/alltypes.h.in",
   ]
@@ -131,7 +138,9 @@ action("create_syscall_h") {
 
   outputs = [ "${target_out_dir}/${musl_inc_out_dir}/bits/syscall.h" ]
 
-  sources = [ "${target_out_dir}/${musl_ported_dir}/arch/${musl_arch}/bits/syscall.h.in" ]
+  sources = [
+    "${target_out_dir}/${musl_ported_dir}/arch/${musl_arch}/bits/syscall.h.in",
+  ]
 
   args = rebase_path(sources, root_build_dir)
   args += rebase_path(outputs, root_build_dir)
diff --git a/musl_template.gni b/musl_template.gni
index e976e8bb..3e2a8a89 100644
--- a/musl_template.gni
+++ b/musl_template.gni
@@ -1,401 +1,414 @@
-import("//build/ohos.gni")
-import("musl_src.gni")
-
-template("musl_libs") {
-
-  no_default_deps = true
-
-  forward_variables_from(invoker, ["target_abi"])
-  abi_prefix = "${target_name}"
-  
-  porting_deps = [
-    "//third_party/musl:create_porting_src",
-    "//third_party/musl:create_alltypes_h",
-    "//third_party/musl:create_syscall_h",
-    "//third_party/musl:create_version_h",
-  ]
-
-  if (target_abi == "soft") {
-    static_lib_out_dir = "usr/lib/${musl_target_triple}"
-    shared_lib_out_dir = "."
-  } else {
-    static_lib_out_dir = "usr/lib/${musl_target_triple}/${target_abi}"
-    shared_lib_out_dir = "${target_abi}"
-  }
-
-  musl_subarch = ""
-  if (target_abi == "a7_hard_neon-vfpv4") {
-    musl_subarch = "hf"
-  }
-
-  group("${abi_prefix}_libs") {
-    deps = [
-      ":${abi_prefix}_libc_musl_shared",
-      ":${abi_prefix}_libc_musl_static",
-      ":${abi_prefix}_libcrypt",
-      ":${abi_prefix}_libdl",
-      ":${abi_prefix}_libm",
-      ":${abi_prefix}_libpthread",
-      ":${abi_prefix}_libresolv",
-      ":${abi_prefix}_librt",
-      ":${abi_prefix}_libutil",
-      ":${abi_prefix}_libxnet",
-      ":${abi_prefix}_musl_crt_install_action",
-      ":${abi_prefix}_create_linker",
-    ]
-  }
-
-  # part of default_compiler_configs from build/config/BUILDCONFIG.gn
-  musl_inherited_configs = [
-    "//build/config/compiler:afdo",
-    "//build/config/compiler:afdo_optimize_size",
-    "//build/config/compiler:compiler",
-    "//build/config/compiler:compiler_arm_fpu",
-    "//build/config/compiler:compiler_arm_thumb",
-    "//build/config/compiler:chromium_code",
-    "//build/config/compiler:default_include_dirs",
-    "//build/config/compiler:default_optimization",
-    "//build/config/compiler:default_stack_frames",
-    "//build/config/compiler:default_symbols",
-    "//build/config/compiler:export_dynamic",
-    "//build/config/compiler:no_exceptions",
-    "//build/config/compiler:no_rtti",
-    "//build/config/compiler:runtime_library",
-    "//build/config/compiler:thin_archive",
-  ]
-
-  config("${abi_prefix}_musl_abi_config") {
-    if (target_abi == "soft") {
-      cflags = [ "-mfloat-abi=soft" ]
-    } else if (target_abi == "a7_soft") {
-      cflags = [
-        "-mcpu=cortex-a7",
-        "-mfloat-abi=soft",
-      ]
-    } else if (target_abi == "a7_softfp_neon-vfpv4") {
-      cflags = [
-        "-mcpu=cortex-a7",
-        "-mfloat-abi=softfp",
-        "-mfpu=neon-vfpv4",
-      ]
-    } else if (target_abi == "a7_hard_neon-vfpv4") {
-      cflags = [
-        "-mcpu=cortex-a7",
-        "-mfloat-abi=hard",
-        "-mfpu=neon-vfpv4",
-      ]
-    }
-  }
-
-  config("${abi_prefix}_musl_config") {
-    configs = [ ":${abi_prefix}_musl_abi_config" ]
-
-    include_dirs = [
-      "${target_out_dir}/${musl_ported_dir}/arch/${musl_arch}",
-      "${target_out_dir}/${musl_ported_dir}/arch/generic",
-      "${target_out_dir}/${musl_ported_dir}/src/internal",
-      "${target_out_dir}/${musl_ported_dir}/src/include",
-      "${target_out_dir}/${musl_ported_dir}/include",
-      "${target_out_dir}/${musl_inc_out_dir}",
-    ]
-
-    cflags_basic = [
-      "--target=${musl_target_triple}",
-      "-march=armv7-a",
-      "-O2",
-      "-Wall",
-      "-D_FORTIFY_SOURCE=2",
-      "-Wl,-z,relro,-z,now,-z,noexecstack",
-    ]
-
-    cflags_auto = [
-      "-D_XOPEN_SOURCE=700",
-      "-Os",
-      "-pipe",
-      "-fomit-frame-pointer",
-      "-fno-unwind-tables",
-      "-fno-asynchronous-unwind-tables",
-      "-ffunction-sections",
-      "-fdata-sections",
-      "-Werror=implicit-function-declaration",
-      "-Werror=implicit-int",
-      "-Werror=pointer-sign",
-      "-Werror=pointer-arith",
-      "-Qunused-arguments",
-    ]
-
-    cflags_c99fse = [
-      "-std=c99",
-      "-nostdinc",  
-      "-ffreestanding",
-      "-frounding-math",
-      "-Wa,--noexecstack",
-    ]
-
-    cflags_all = cflags_basic +
-                 cflags_c99fse +
-                 cflags_auto         
-
-    cflags = cflags_all
-
-    if ("${target_abi}" != "a7_hard_neon-vfpv4") {
-      defines = [ "BROKEN_VFP_ASM" ]
-    }
-
-    dynamic_list = rebase_path("${target_out_dir}/${musl_ported_dir}/dynamic.list")
-
-    ldflags = cflags_all
-    ldflags += [
-      "--target=${musl_target_triple}",
-      "-fuse-ld=lld",
-      "-Wl,--sort-section,alignment",
-      "-Wl,--sort-common",
-      "-Wl,--gc-sections",
-      "-Wl,--hash-style=both",
-      "-Wl,--no-undefined",
-      "-Wl,--exclude-libs=ALL",
-      "-Wl,--dynamic-list=${dynamic_list}",
-    ]
-    asmflags = cflags
-  }
-
-  source_set("${abi_prefix}_musl_crt") {
-    sources = [
-      "${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/crti.s",
-      "${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/crtn.s",
-      "${target_out_dir}/${musl_ported_dir}/crt/Scrt1.c",
-      "${target_out_dir}/${musl_ported_dir}/crt/crt1.c",
-      "${target_out_dir}/${musl_ported_dir}/crt/rcrt1.c",
-    ]
-
-    defines = [ "CRT" ]
-
-    configs -= musl_inherited_configs
-    configs += [ ":${abi_prefix}_musl_config" ]
-    cflags = [
-      "-fPIC",
-      "-fno-stack-protector",
-    ]
-
-    deps = porting_deps
-
-    asmflags = cflags
-  }
-
-  source_set("${abi_prefix}_musl_src") {
-    sources_orig = []
-    sources = []
-    set_sources_assignment_filter([])
-
-    sources_orig = musl_src_arch_file + musl_src_file
-    sources_orig -= musl_src_filterout
-    sources_orig -= [
-      "src/string/mempcpy.c",
-      "src/string/memset.c",
-      "src/env/__init_tls.c",
-      "src/env/__libc_start_main.c",
-      "src/env/__stack_chk_fail.c",
-      "src/thread/${musl_arch}/__set_thread_area.c",
-    ]
-
-    if ("${target_abi}" == "a7_hard_neon-vfpv4") {
-      defines = [ "__ARM_PCS_VFP" ]
-    }
-
-    foreach(s, sources_orig) {
-      sources += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
-    }
-
-    cflags = [
-      "-O3",
-      "-fPIC",
-      "-fstack-protector-strong",
-    ]
-
-    configs -= musl_inherited_configs
-    configs += [ ":${abi_prefix}_musl_config" ]
-
-    deps = porting_deps
-  }
-
-  source_set("${abi_prefix}_musl_src_nossp") {
-    sources = []
-    sources_orig = [
-      "src/string/mempcpy.c",
-      "src/string/memset.c",
-      "src/env/__init_tls.c",
-      "src/env/__libc_start_main.c",
-      "src/env/__stack_chk_fail.c",
-      "src/thread/${musl_arch}/__set_thread_area.c",
-    ]
-
-    foreach(s, sources_orig) {
-      sources += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
-    }
-
-    configs -= musl_inherited_configs
-    configs += [ ":${abi_prefix}_musl_config" ]
-    cflags = [
-      "-O3",
-      "-fPIC",
-      "-fno-stack-protector",
-    ]
-
-    deps = porting_deps
-  }
-
-  source_set("${abi_prefix}_musl_ldso") {
-    sources = []
-    sources_orig = musl_src_ldso
-
-    foreach(s, sources_orig) {
-      sources += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
-    }
-
-    configs -= musl_inherited_configs
-    configs += [ ":${abi_prefix}_musl_config" ]
-    cflags = [
-      "-fPIC",
-      "-fno-stack-protector",
-    ]
-
-    deps = porting_deps
-  }
-
-  static_library("${abi_prefix}_libc_musl_static") {
-    output_name = "libc"
-    complete_static_lib = true
-
-    configs -= musl_inherited_configs
-
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-    deps = [
-      ":${abi_prefix}_musl_src",
-      ":${abi_prefix}_musl_src_nossp",
-    ]
-  }
-
-  static_library("${abi_prefix}_libm") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libm"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_librt") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "librt"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_libpthread") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libpthread"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_libcrypt") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libcrypt"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_libutil") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libutil"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_libresolv") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libresolv"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_libxnet") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libxnet"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  static_library("${abi_prefix}_libdl") {
-    complete_static_lib = true
-    configs -= musl_inherited_configs
-    output_name = "libdl"
-    output_dir = "${target_out_dir}/${static_lib_out_dir}"
-  }
-
-  shared_library("${abi_prefix}_libc_musl_shared") {
-    output_dir = "${root_out_dir}/common/common/libc/${shared_lib_out_dir}"
-    output_name = "libc"
-    output_extension = "so"
-
-    libclang_rt_path = rebase_path("${runtime_lib_path}/${musl_target_triple}/${shared_lib_out_dir}")
-
-    ldflags = [
-      "-nostdlib",
-      "-Wl,-e,_dlstart",
-      "-L${libclang_rt_path}",
-      "-lclang_rt.builtins",
-    ]
-
-    remove_configs = musl_inherited_configs
-    remove_configs += [ "//build/config:default_libs" ]
-
-    configs -= musl_inherited_configs
-    configs -= [ "//build/config:default_libs" ]
-    configs += [ ":${abi_prefix}_musl_config" ]
-
-    deps = [
-      ":${abi_prefix}_musl_ldso",
-      ":${abi_prefix}_musl_src",
-      ":${abi_prefix}_musl_src_nossp",
-    ]
-  }
-
-  action_foreach("${abi_prefix}_musl_crt_install_action") {
-    redir = "${root_out_dir}/obj"
-    script = "${target_out_dir}/${musl_ported_dir}/scripts/install.py"
-    sources = [
-      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/${abi_prefix}_musl_crt/crti.o",
-      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/${abi_prefix}_musl_crt/crtn.o",
-      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${abi_prefix}_musl_crt/Scrt1.o",
-      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${abi_prefix}_musl_crt/crt1.o",
-      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${abi_prefix}_musl_crt/rcrt1.o",
-     ]
-
-    outputs = [ "${target_out_dir}/${static_lib_out_dir}/{{source_file_part}}" ]
-
-    args = [
-      "--input",
-      "{{source}}",
-    ]
-    args += [ "--output" ] + rebase_path(outputs, root_build_dir)
-
-    deps = [ ":${abi_prefix}_musl_crt" ]
-  }
-
-  action("${abi_prefix}_create_linker") {
-    script = "${target_out_dir}/${musl_ported_dir}/tools/install.sh"
-    
-    sources = [ "${root_out_dir}/common/common/libc/${shared_lib_out_dir}/libc.so" ]
-
-    outputs = [ "${root_out_dir}/common/common/libc/${shared_lib_out_dir}/ld-musl-${musl_arch}${musl_subarch}.so.1" ]
-
-    args = [ 
-      "-D",
-      "-r",
-    ]
-    args +=  rebase_path(sources)
-    args +=  rebase_path(outputs)
-
-    deps = [ ":${abi_prefix}_libc_musl_shared" ]
-  }
-
-}
+import("//build/ohos.gni")
+import("musl_src.gni")
+
+template("musl_libs") {
+  no_default_deps = true
+
+  forward_variables_from(invoker, [ "target_abi" ])
+  abi_prefix = target_abi
+
+  if (target_abi == "soft") {
+    _libs_path_prefix = "."
+    _libs_out_dir = "usr/lib/${musl_target_triple}"
+  } else {
+    _libs_path_prefix = "${target_abi}"
+    _libs_out_dir = "usr/lib/${musl_target_triple}/${target_abi}"
+  }
+
+  musl_subarch = ""
+  if (target_abi == "a7_hard_neon-vfpv4") {
+    musl_subarch = "hf"
+  }
+
+  porting_deps = [
+    "//third_party/musl:create_alltypes_h",
+    "//third_party/musl:create_porting_src",
+    "//third_party/musl:create_syscall_h",
+    "//third_party/musl:create_version_h",
+  ]
+
+  group(target_name) {
+    deps = [
+      ":${abi_prefix}_create_linker",
+      ":${abi_prefix}_libc_musl_shared",
+      ":${abi_prefix}_libc_musl_static",
+      ":${abi_prefix}_musl_crt_libs",
+    ]
+  }
+
+  group("${abi_prefix}_shared_libs") {
+    deps = [
+      ":${abi_prefix}_libc_musl_shared",
+      ":${abi_prefix}_libcrypt",
+      ":${abi_prefix}_libdl",
+      ":${abi_prefix}_libm",
+      ":${abi_prefix}_libpthread",
+      ":${abi_prefix}_libresolv",
+      ":${abi_prefix}_librt",
+      ":${abi_prefix}_libutil",
+      ":${abi_prefix}_libxnet",
+      ":${abi_prefix}_musl_crt_libs",
+      ":musl_headers",
+    ]
+  }
+
+  group("${abi_prefix}_static_libs") {
+    deps = [
+      ":${abi_prefix}_libc_musl_static",
+      ":${abi_prefix}_libcrypt",
+      ":${abi_prefix}_libdl",
+      ":${abi_prefix}_libm",
+      ":${abi_prefix}_libpthread",
+      ":${abi_prefix}_libresolv",
+      ":${abi_prefix}_librt",
+      ":${abi_prefix}_libutil",
+      ":${abi_prefix}_libxnet",
+      ":${abi_prefix}_musl_crt_libs",
+      ":musl_headers",
+    ]
+  }
+
+  group("${abi_prefix}_musl_crt_libs") {
+    deps = [ ":${abi_prefix}_musl_crt_install_action" ]
+  }
+
+  # part of default_compiler_configs from build/config/BUILDCONFIG.gn
+  musl_inherited_configs = [
+    "//build/config/compiler:afdo",
+    "//build/config/compiler:afdo_optimize_size",
+    "//build/config/compiler:compiler",
+    "//build/config/compiler:compiler_arm_fpu",
+    "//build/config/compiler:compiler_arm_thumb",
+    "//build/config/compiler:chromium_code",
+    "//build/config/compiler:default_include_dirs",
+    "//build/config/compiler:default_optimization",
+    "//build/config/compiler:default_stack_frames",
+    "//build/config/compiler:default_symbols",
+    "//build/config/compiler:export_dynamic",
+    "//build/config/compiler:no_exceptions",
+    "//build/config/compiler:no_rtti",
+    "//build/config/compiler:runtime_library",
+    "//build/config/compiler:thin_archive",
+  ]
+
+  config("${abi_prefix}_musl_abi_config") {
+    if (target_abi == "soft") {
+      cflags = [ "-mfloat-abi=soft" ]
+    } else if (target_abi == "a7_soft") {
+      cflags = [
+        "-mcpu=cortex-a7",
+        "-mfloat-abi=soft",
+      ]
+    } else if (target_abi == "a7_softfp_neon-vfpv4") {
+      cflags = [
+        "-mcpu=cortex-a7",
+        "-mfloat-abi=softfp",
+        "-mfpu=neon-vfpv4",
+      ]
+    } else if (target_abi == "a7_hard_neon-vfpv4") {
+      cflags = [
+        "-mcpu=cortex-a7",
+        "-mfloat-abi=hard",
+        "-mfpu=neon-vfpv4",
+      ]
+    }
+  }
+
+  config("${abi_prefix}_musl_config") {
+    configs = [ ":${abi_prefix}_musl_abi_config" ]
+
+    include_dirs = [
+      "${target_out_dir}/${musl_ported_dir}/arch/${musl_arch}",
+      "${target_out_dir}/${musl_ported_dir}/arch/generic",
+      "${target_out_dir}/${musl_ported_dir}/src/internal",
+      "${target_out_dir}/${musl_ported_dir}/src/include",
+      "${target_out_dir}/${musl_ported_dir}/include",
+      "${target_out_dir}/${musl_inc_out_dir}",
+    ]
+
+    cflags_basic = [
+      "--target=${musl_target_triple}",
+      "-march=armv7-a",
+      "-O2",
+      "-Wall",
+      "-D_FORTIFY_SOURCE=2",
+      "-Wl,-z,relro,-z,now,-z,noexecstack",
+    ]
+
+    cflags_auto = [
+      "-D_XOPEN_SOURCE=700",
+      "-Os",
+      "-pipe",
+      "-fomit-frame-pointer",
+      "-fno-unwind-tables",
+      "-fno-asynchronous-unwind-tables",
+      "-ffunction-sections",
+      "-fdata-sections",
+      "-Werror=implicit-function-declaration",
+      "-Werror=implicit-int",
+      "-Werror=pointer-sign",
+      "-Werror=pointer-arith",
+      "-Qunused-arguments",
+    ]
+
+    cflags_c99fse = [
+      "-std=c99",
+      "-nostdinc",
+      "-ffreestanding",
+      "-frounding-math",
+      "-Wa,--noexecstack",
+    ]
+
+    cflags_all = cflags_basic + cflags_c99fse + cflags_auto
+
+    cflags = cflags_all
+
+    if ("${target_abi}" != "a7_hard_neon-vfpv4") {
+      defines = [ "BROKEN_VFP_ASM" ]
+    }
+
+    dynamic_list =
+        rebase_path("${target_out_dir}/${musl_ported_dir}/dynamic.list")
+
+    ldflags = cflags_all
+    ldflags += [
+      "--target=${musl_target_triple}",
+      "-fuse-ld=lld",
+      "-Wl,--sort-section,alignment",
+      "-Wl,--sort-common",
+      "-Wl,--gc-sections",
+      "-Wl,--hash-style=both",
+      "-Wl,--no-undefined",
+      "-Wl,--exclude-libs=ALL",
+      "-Wl,--dynamic-list=${dynamic_list}",
+    ]
+    asmflags = cflags
+  }
+
+  source_set("${abi_prefix}_musl_crt") {
+    sources = [
+      "${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/crti.s",
+      "${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/crtn.s",
+      "${target_out_dir}/${musl_ported_dir}/crt/Scrt1.c",
+      "${target_out_dir}/${musl_ported_dir}/crt/crt1.c",
+      "${target_out_dir}/${musl_ported_dir}/crt/rcrt1.c",
+    ]
+
+    defines = [ "CRT" ]
+
+    configs -= musl_inherited_configs
+    configs += [ ":${abi_prefix}_musl_config" ]
+    cflags = [
+      "-fPIC",
+      "-fno-stack-protector",
+    ]
+
+    deps = porting_deps
+
+    asmflags = cflags
+  }
+
+  source_set("${abi_prefix}_musl_src") {
+    sources_orig = []
+    sources = []
+    set_sources_assignment_filter([])
+
+    sources_orig = musl_src_arch_file + musl_src_file
+    sources_orig -= musl_src_filterout
+    sources_orig -= [
+      "src/string/mempcpy.c",
+      "src/string/memset.c",
+      "src/env/__init_tls.c",
+      "src/env/__libc_start_main.c",
+      "src/env/__stack_chk_fail.c",
+      "src/thread/${musl_arch}/__set_thread_area.c",
+    ]
+
+    if ("${target_abi}" == "a7_hard_neon-vfpv4") {
+      defines = [ "__ARM_PCS_VFP" ]
+    }
+
+    foreach(s, sources_orig) {
+      sources += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
+    }
+
+    cflags = [
+      "-O3",
+      "-fPIC",
+      "-fstack-protector-strong",
+    ]
+
+    configs -= musl_inherited_configs
+    configs += [ ":${abi_prefix}_musl_config" ]
+
+    deps = porting_deps
+  }
+
+  source_set("${abi_prefix}_musl_src_nossp") {
+    sources = []
+    sources_orig = [
+      "src/string/mempcpy.c",
+      "src/string/memset.c",
+      "src/env/__init_tls.c",
+      "src/env/__libc_start_main.c",
+      "src/env/__stack_chk_fail.c",
+      "src/thread/${musl_arch}/__set_thread_area.c",
+    ]
+
+    foreach(s, sources_orig) {
+      sources += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
+    }
+
+    configs -= musl_inherited_configs
+    configs += [ ":${abi_prefix}_musl_config" ]
+    cflags = [
+      "-O3",
+      "-fPIC",
+      "-fno-stack-protector",
+    ]
+
+    deps = porting_deps
+  }
+
+  source_set("${abi_prefix}_musl_ldso") {
+    sources = []
+    sources_orig = musl_src_ldso
+
+    foreach(s, sources_orig) {
+      sources += [ "${target_out_dir}/${musl_ported_dir}/${s}" ]
+    }
+
+    configs -= musl_inherited_configs
+    configs += [ ":${abi_prefix}_musl_config" ]
+    cflags = [
+      "-fPIC",
+      "-fno-stack-protector",
+    ]
+
+    deps = porting_deps
+  }
+
+  static_library("${abi_prefix}_libc_musl_static") {
+    output_name = "libc"
+    complete_static_lib = true
+
+    configs -= musl_inherited_configs
+
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+    deps = [
+      ":${abi_prefix}_musl_src",
+      ":${abi_prefix}_musl_src_nossp",
+    ]
+  }
+
+  static_library("${abi_prefix}_libm") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libm"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_librt") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "librt"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_libpthread") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libpthread"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_libcrypt") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libcrypt"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_libutil") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libutil"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_libresolv") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libresolv"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_libxnet") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libxnet"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  static_library("${abi_prefix}_libdl") {
+    complete_static_lib = true
+    configs -= musl_inherited_configs
+    output_name = "libdl"
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+  }
+
+  shared_library("${abi_prefix}_libc_musl_shared") {
+    output_dir = "${target_out_dir}/${_libs_out_dir}"
+    output_name = "libc"
+    output_extension = "so"
+
+    libclang_rt_path = rebase_path(
+            "${runtime_lib_path}/${musl_target_triple}/${_libs_path_prefix}")
+
+    ldflags = [
+      "-nostdlib",
+      "-Wl,-e,_dlstart",
+      "-L${libclang_rt_path}",
+      "-lclang_rt.builtins",
+    ]
+
+    configs -= musl_inherited_configs
+    configs -= [ "//build/config:default_libs" ]
+    configs += [ ":${abi_prefix}_musl_config" ]
+
+    deps = [
+      ":${abi_prefix}_musl_ldso",
+      ":${abi_prefix}_musl_src",
+      ":${abi_prefix}_musl_src_nossp",
+    ]
+  }
+
+  action_foreach("${abi_prefix}_musl_crt_install_action") {
+    redir = "${root_out_dir}/obj"
+    script = "${target_out_dir}/${musl_ported_dir}/scripts/install.py"
+    sources = [
+      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${abi_prefix}_musl_crt/Scrt1.o",
+      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${abi_prefix}_musl_crt/crt1.o",
+      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${abi_prefix}_musl_crt/rcrt1.o",
+      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/${abi_prefix}_musl_crt/crti.o",
+      "${redir}/${target_out_dir}/${musl_ported_dir}/crt/${musl_arch}/${abi_prefix}_musl_crt/crtn.o",
+    ]
+    outputs = [ "${target_out_dir}/${_libs_out_dir}/{{source_file_part}}" ]
+    args = [
+      "--input",
+      "{{source}}",
+    ]
+    args += [ "--output" ] + rebase_path(outputs, root_build_dir)
+    deps = [ ":${abi_prefix}_musl_crt" ]
+  }
+
+  copy("${abi_prefix}_create_linker") {
+    deps = [ ":${abi_prefix}_libc_musl_shared" ]
+
+    # _libc_shared_outputs = get_target_outputs(":${abi_prefix}_libc_musl_shared")
+    _libc_shared_so = "${target_out_dir}/${_libs_out_dir}/libc.so"
+    sources = [ _libc_shared_so ]
+    _muls_linker_so = "${root_out_dir}/common/common/libc/${_libs_path_prefix}/ld-musl-${musl_arch}${musl_subarch}.so.1"
+    outputs = [ _muls_linker_so ]
+  }
+}
-- 
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