release

module/build.gradle.kts

@@ -14,6 +14,12 @@ val verName: String by rootProject.extra
 val commitHash: String by rootProject.extra
 val abiList: List<String> by rootProject.extra
 
+val releaseFlags = arrayOf(
+    "-Oz", "-flto",
+    "-Wno-unused", "-Wno-unused-parameter",
+    "-Wl,--exclude-libs,ALL", "-Wl,--gc-sections",
+)
+
 android {
     defaultConfig {
         ndk {
@@ -34,6 +40,14 @@ android {
             path("src/main/cpp/CMakeLists.txt")
         }
     }
+    buildTypes {
+        release {
+            externalNativeBuild.cmake {
+                cFlags += releaseFlags
+                cppFlags += releaseFlags
+            }
+        }
+    }
 }
 
 androidComponents.onVariants { variant ->

module/src/main/cpp/CMakeLists.txt

@@ -3,7 +3,6 @@ project(sample)
 
 set(LINKER_FLAGS "-ffixed-x18 -Wl,--hash-style=both")
 
-# TODO: set visibility only for our libs (-fvisibility=hidden -fvisibility-inlines-hidden)
 set(CXX_FLAGS "${CXX_FLAGS} -fno-exceptions -fno-rtti")
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS}")
@@ -37,6 +36,8 @@ target_link_libraries(binder utils)
 
 add_executable(libinject.so inject/main.cpp inject/utils.cpp)
 target_link_libraries(libinject.so lspmparser my_logging)
+target_compile_options(libinject.so PRIVATE -fvisibility=hidden -fvisibility-inlines-hidden)
 
 add_library(${MODULE_NAME} SHARED binder_interceptor.cpp)
 target_link_libraries(${MODULE_NAME} log binder utils dobby elf_util my_logging)
+target_compile_options(${MODULE_NAME} PRIVATE -fvisibility=hidden -fvisibility-inlines-hidden)

module/src/main/cpp/inject/main.cpp

@@ -290,7 +290,9 @@ bool inject_library(int pid, const char *lib_path, const char* entry_name) {
 }
 
 int main(int argc, char **argv) {
+#ifndef NDEBUG
     logging::setPrintEnabled(true);
+#endif
     auto pid = strtol(argv[1], nullptr, 0);
     char buf[4096];
     realpath(argv[2], buf);