!122 musl实现增量编译

Merge pull request !122 from 陈健文/master

BUILD.gn

@@ -97,6 +97,23 @@ action("create_porting_src") {
   args = [ "-i" ] + rebase_path(sources)
   args += [ "-o" ] + rebase_path(outdir)
   args += [ "-p" ] + [ "${musl_target_os}" ]
+
+  foreach(i, src_files) {
+    foreach(s, musl_src_porting_file) {
+      if (i == s) {
+        src_files -= [ "${s}" ]
+      }
+    }
+  }
+
+  inputs = []
+  foreach(s, src_files) {
+    inputs += [ "${musl_dir}/${s}" ]
+  }
+
+  foreach(s, musl_src_porting_file) {
+    inputs += [ "${musl_porting_dir}/${s}" ]
+  }
 }
 
 action("create_alltypes_h") {

musl_config.gni

@@ -33,6 +33,8 @@ declare_args() {
   musl_ported_dir = "intermidiates/${musl_target_os}/musl_src_ported"
   musl_inc_out_dir = "usr/include/${musl_target_triple}"
   uapi_dir = "//kernel/linux/patches/linux-5.10/prebuilts/usr/include"
+  musl_dir = "//third_party/musl"
+  musl_porting_dir = "//third_party/musl/porting/linux/user"
 
   # if (is_asan) {
   #   musl_linker_asan_name =

musl_src.gni

@@ -1820,3 +1820,22 @@ musl_inc_root_files = [
   "include/wctype.h",
   "include/wordexp.h",
 ]
+
+musl_src_porting_file = [
+  "arch/arm/bits/fenv.h",
+  "arch/generic/bits/shm.h",
+  "include/ctype.h",
+  "include/pthread.h",
+  "include/sys/capability.h",
+  "include/sys/socket.h",
+  "include/sys/sysinfo.h",
+  "include/unistd.h",
+  "src/internal/pthread_impl.h",
+  "src/internal/syscall.h",
+  "src/legacy/ulimit.c",
+  "src/linux/gettid.c",
+  "src/malloc/malloc.c",
+  "src/multibyte/wcsnrtombs.c",
+  "src/network/inet_legacy.c",
+  "src/passwd/getspnam_r.c",
+]