fixed linux app image build

src/backends/linux.cpp

@@ -12,6 +12,9 @@
 DBusConnection* conn = nullptr;
 
 std::string getExecutablePath() {
+    if (const char* appImagePath = std::getenv("APPIMAGE")) 
+        return std::string(appImagePath);
+
     char result[PATH_MAX]{};
     ssize_t count = readlink("/proc/self/exe", result, PATH_MAX);
     return (count != -1) ? std::string(result, count) : std::string();

vendor/CMakeLists.txt

@@ -11,9 +11,10 @@ SET(BUILD_STATIC_LIBS ON)
 SET(BUILD_SHARED_LIBS OFF)
 SET(BUILD_CURL_EXE OFF)
 SET(MBEDTLS_INCLUDE_DIRS ../mbedtls/include)
-file(REMOVE curl/CMake/FindMbedTLS.cmake) #replace curls FindMbedTLS that expects mbedtls to be prebuilt with a dummy
+file(RENAME curl/CMake/FindMbedTLS.cmake curl/CMake/FindMbedTLS.cmake.bak) #replace curls FindMbedTLS that expects mbedtls to be prebuilt with a dummy
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/dummy ${CMAKE_MODULE_PATH})
 add_subdirectory("curl")
+file(RENAME curl/CMake/FindMbedTLS.cmake.bak curl/CMake/FindMbedTLS.cmake)
 set(wxBUILD_SHARED OFF)
 set(wxBUILD_MONOLITHIC ON)
 set(wxUSE_GUI ON)