Use RPATH in docker build

src/cpp/CMakeLists.txt

@@ -9,7 +9,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 ADD_EXECUTABLE(larynx main.cpp)
 
-string(APPEND CMAKE_CXX_FLAGS " -Wall -Wextra")
+string(APPEND CMAKE_CXX_FLAGS " -Wall -Wextra -Wl,-rpath,'$ORIGIN'")
 string(APPEND CMAKE_C_FLAGS " -Wall -Wextra")
 
 find_package(PkgConfig)
@@ -30,10 +30,12 @@ set(ONNXRUNTIME_ROOTDIR "/usr/local/include/onnxruntime")
 
 target_link_libraries(larynx
                       onnxruntime
+                      -static-libgcc -static-libstdc++
                       ${ESPEAK_NG_LIBRARIES}
                       ${PCAUDIO_LIBRARIES})
 
 target_link_directories(larynx PUBLIC
+                        ${ESPEAK_NG_LIBRARY_DIRS}
                         ${ONNXRUNTIME_ROOTDIR}/lib)
 
 target_include_directories(larynx PUBLIC

src/cpp/larynx.hpp

@@ -1,6 +1,7 @@
 #ifndef LARYNX_H_
 #define LARYNX_H_
 
+#include <filesystem>
 #include <iostream>
 #include <string>
 #include <vector>
@@ -26,11 +27,18 @@ struct Voice {
   ModelSession session;
 };
 
-void initialize() {
+void initialize(std::filesystem::path cwd) {
+  const char *dataPath = NULL;
+
+  auto cwdDataPath = cwd.append("espeak-ng-data");
+  if (std::filesystem::is_directory(cwdDataPath)) {
+    dataPath = cwdDataPath.c_str();
+  }
+
   // Set up espeak-ng for calling espeak_TextToPhonemes
   int result = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS,
                                  /*buflength*/ 0,
-                                 /*path*/ NULL,
+                                 /*path*/ dataPath,
                                  /*options*/ 0);
   if (result < 0) {
     throw runtime_error("Failed to initialize eSpeak-ng");

src/cpp/main.cpp

@@ -35,7 +35,8 @@ int main(int argc, char *argv[]) {
   RunConfig runConfig;
   parseArgs(argc, argv, runConfig);
 
-  larynx::initialize();
+  auto exePath = filesystem::path(argv[0]);
+  larynx::initialize(exePath.parent_path());
 
   larynx::Voice voice;
   auto startTime = chrono::steady_clock::now();