Make NetworkStack actually build in an unbundled setup.
The Java code was already using sdk_version: "current", but the
JNI library did not have an sdk_version attribute, and had
forbidden dependencies on internal libraries such as libcutils,
liblog and libnativehelper.
This CL fixes things as follows:
- Use the NDK log functions, and switch to the NDK liblog.
- Switch to the NDK libnativehelper.
- Drop the dependencies on libcutils and libpcap, which were
unused.
- Use the libc++ STL, and set the sdk_version of the library to
current.
Bug: 131703417
Test: m
Test: installed NetworkStack APK via "adb install --staged" results in working networking
Test: builds, boots, wifi works
Test: atest FrameworksNetTests NetworkStackTests
Change-Id: I1a7bd7fe2809b90a66073d8c5d5dcdff646c4286
diff --git a/packages/NetworkStack/Android.bp b/packages/NetworkStack/Android.bp
index e0bb862..62de2ba 100644
--- a/packages/NetworkStack/Android.bp
+++ b/packages/NetworkStack/Android.bp
@@ -56,15 +56,24 @@
srcs: [
"jni/network_stack_utils_jni.cpp"
],
-
+ sdk_version: "current",
shared_libs: [
"liblog",
- "libcutils",
- "libnativehelper",
+ "libnativehelper_compat_libc++",
],
- static_libs: [
- "libpcap",
- ],
+
+ // We cannot use plain "libc++" here to link libc++ dynamically because it results in:
+ // java.lang.UnsatisfiedLinkError: dlopen failed: library "libc++_shared.so" not found
+ // even if "libc++" is added into jni_libs below. Adding "libc++_shared" into jni_libs doesn't
+ // build because soong complains of:
+ // module NetworkStack missing dependencies: libc++_shared
+ //
+ // So, link libc++ statically. This means that we also need to ensure that all the C++ libraries
+ // we depend on do not dynamically link libc++. This is currently the case, because liblog is
+ // C-only and libnativehelper_compat_libc also uses stl: "c++_static".
+ //
+ // TODO: find a better solution for this in R.
+ stl: "c++_static",
cflags: [
"-Wall",
"-Werror",
@@ -79,7 +88,10 @@
static_libs: [
"NetworkStackBase",
],
- jni_libs: ["libnetworkstackutilsjni"],
+ jni_libs: [
+ "libnativehelper_compat_libc++",
+ "libnetworkstackutilsjni",
+ ],
// Resources already included in NetworkStackBase
resource_dirs: [],
jarjar_rules: "jarjar-rules-shared.txt",