Simplify Launch Process

CMakeLists.txt

@@ -41,7 +41,6 @@ endif()
 set(MCPI_INSTALL_DIR "lib/${MCPI_VARIANT_NAME}")
 set(MCPI_LIB_DIR "${MCPI_INSTALL_DIR}/lib")
 set(MCPI_BIN_DIR "${MCPI_INSTALL_DIR}/bin")
-set(MCPI_FALLBACK_LIB_DIR "${MCPI_INSTALL_DIR}/fallback-lib")
 
 # Build Mode
 if(NOT CMAKE_BUILD_TYPE)

launcher/CMakeLists.txt

@@ -2,7 +2,7 @@ project(launcher)
 
 # Launcher
 if(BUILD_NATIVE_COMPONENTS)
-    add_executable(launcher src/bootstrap.c src/ldconfig.cpp)
+    add_executable(launcher src/bootstrap.c src/patchelf.c)
     if(MCPI_SERVER_MODE)
         target_sources(launcher PRIVATE src/server/launcher.c)
     else()

launcher/src/bootstrap.c

@@ -11,7 +11,7 @@
 #include <libreborn/libreborn.h>
 
 #include "bootstrap.h"
-#include "ldconfig.h"
+#include "patchelf.h"
 
 // Set Environmental Variable
 #define PRESERVE_ENVIRONMENTAL_VARIABLE(name) \
@@ -34,7 +34,7 @@ static void trim(char **value) {
 void set_and_print_env(const char *name, char *value) {
     // Set Variable With No Trailing Colon
     static const char *unmodified_name_prefix = "MCPI_";
-    if (strncmp(unmodified_name_prefix, name, strlen(unmodified_name_prefix)) != 0) {
+    if (!starts_with(name, unmodified_name_prefix)) {
         trim(&value);
     }
 
@@ -194,8 +194,57 @@ void bootstrap(int argc, char *argv[]) {
         usr_prefix = "";
     }
 
+    // Resolve Binary Path & Set MCPI_DIRECTORY
+    {
+        // Log
+        DEBUG("%s", "Resolving File Paths...");
+
+        // Resolve Full Binary Path
+        char *full_path = NULL;
+        safe_asprintf(&full_path, "%s/" MCPI_BINARY, binary_directory);
+        char *resolved_path = realpath(full_path, NULL);
+        ALLOC_CHECK(resolved_path);
+        free(full_path);
+
+        // Set MCPI_EXECUTABLE_PATH
+        set_and_print_env("MCPI_EXECUTABLE_PATH", resolved_path);
+
+        // Set MCPI_DIRECTORY
+        chop_last_component(&resolved_path);
+        set_and_print_env("MCPI_DIRECTORY", resolved_path);
+        free(resolved_path);
+    }
+
+    // Fix MCPI Dependencies
+    {
+        // Log
+        DEBUG("%s", "Patching ELF Dependencies...");
+
+        // Find Linker
+        char *linker = NULL;
+#ifndef __arm__
+        safe_asprintf(&linker, "%s/usr/arm-linux-gnueabihf/lib/ld-linux-armhf.so.3", usr_prefix);
+#else
+        safe_asprintf(&linker, "/lib/ld-linux-armhf.so.3");
+#endif
+
+        // Patch
+        patch_mcpi_elf_dependencies(linker);
+
+        // Free Linker Path
+        free(linker);
+
+        // Verify
+        if (!starts_with(getenv("MCPI_EXECUTABLE_PATH"), "/tmp")) {
+            IMPOSSIBLE();
+        }
+    }
+
     // Configure LD_LIBRARY_PATH
     {
+        // Log
+        DEBUG("%s", "Setting Linker Search Paths...");
+
         // Preserve
         PRESERVE_ENVIRONMENTAL_VARIABLE("LD_LIBRARY_PATH");
         char *new_ld_path = NULL;
@@ -203,38 +252,16 @@ void bootstrap(int argc, char *argv[]) {
         // Add Library Directory
         safe_asprintf(&new_ld_path, "%s/lib", binary_directory);
 
-        // Add MCPI_LD_LIBRARY_PATH
+        // Load ARM Libraries (Ensure Priority)
-        {
+        string_append(&new_ld_path, ":%s/usr/lib/arm-linux-gnueabihf:%s/usr/arm-linux-gnueabihf/lib", usr_prefix, usr_prefix);
-            char *value = get_env_safe("MCPI_LD_LIBRARY_PATH");
-            if (strlen(value) > 0) {
-                string_append(&new_ld_path, ":%s", value);
-            }
-        }
 
         // Add LD_LIBRARY_PATH (ARM32 Only)
-#ifdef __arm__
         {
             char *value = get_env_safe("LD_LIBRARY_PATH");
             if (strlen(value) > 0) {
                 string_append(&new_ld_path, ":%s", value);
             }
         }
-#endif
-
-        // Load ARM Libraries (Ensure Priority)
-        string_append(&new_ld_path, ":%s/usr/lib/arm-linux-gnueabihf:%s/usr/arm-linux-gnueabihf/lib", usr_prefix, usr_prefix);
-
-        // Add Full Library Search Path
-        {
-            char *value = get_full_library_search_path();
-            if (strlen(value) > 0) {
-                string_append(&new_ld_path, ":%s", value);
-            }
-            free(value);
-        }
-
-        // Add Fallback Library Directory
-        string_append(&new_ld_path, ":%s/fallback-lib", binary_directory);
 
         // Set And Free
         set_and_print_env("LD_LIBRARY_PATH", new_ld_path);
@@ -243,6 +270,9 @@ void bootstrap(int argc, char *argv[]) {
 
     // Configure LD_PRELOAD
     {
+        // Log
+        DEBUG("%s", "Locating Mods...");
+
         // Preserve
         PRESERVE_ENVIRONMENTAL_VARIABLE("LD_PRELOAD");
         char *new_ld_preload = NULL;
@@ -292,24 +322,6 @@ void bootstrap(int argc, char *argv[]) {
         free(new_ld_preload);
     }
 
-    // Resolve Binary Path & Set MCPI_DIRECTORY
-    {
-        // Resolve Full Binary Path
-        char *full_path = NULL;
-        safe_asprintf(&full_path, "%s/" MCPI_BINARY, binary_directory);
-        char *resolved_path = realpath(full_path, NULL);
-        ALLOC_CHECK(resolved_path);
-        free(full_path);
-
-        // Set MCPI_EXECUTABLE_PATH
-        set_and_print_env("MCPI_EXECUTABLE_PATH", resolved_path);
-
-        // Set MCPI_DIRECTORY
-        chop_last_component(&resolved_path);
-        set_and_print_env("MCPI_DIRECTORY", resolved_path);
-        free(resolved_path);
-    }
-
     // Free Binary Directory
     free(binary_directory);
 
@@ -317,8 +329,8 @@ void bootstrap(int argc, char *argv[]) {
     INFO("%s", "Starting Game...");
 
     // Arguments
-    int argv_start = 2; // argv = &new_args[argv_start]
+    int argv_start = 1; // argv = &new_args[argv_start]
-    const char *new_args[argv_start /* 2 Potential Prefix Arguments (QEMU And Linker) */ + argc + 1 /* NULL-Terminator */]; //
+    const char *new_args[argv_start /* 1 Potential Prefix Argument (QEMU) */ + argc + 1 /* NULL-Terminator */]; //
 
     // Copy Existing Arguments
     for (int i = 1; i < argc; i++) {
@@ -330,13 +342,6 @@ void bootstrap(int argc, char *argv[]) {
     // Set Executable Argument
     new_args[argv_start] = getenv("MCPI_EXECUTABLE_PATH");
 
-    // Non-ARM32 Systems Need Manually Specified Linker
-#ifndef __arm__
-    argv_start--;
-    char *linker = NULL;
-    safe_asprintf(&linker, "%s/usr/arm-linux-gnueabihf/lib/ld-linux-armhf.so.3", usr_prefix);
-    new_args[argv_start] = linker;
-
     // Non-ARM Systems Need QEMU
 #ifndef __ARM_ARCH
     argv_start--;
@@ -345,7 +350,6 @@ void bootstrap(int argc, char *argv[]) {
     // Prevent QEMU From Being Modded
     PASS_ENVIRONMENTAL_VARIABLE_TO_QEMU("LD_LIBRARY_PATH");
     PASS_ENVIRONMENTAL_VARIABLE_TO_QEMU("LD_PRELOAD");
-#endif
 #endif
 
     // Run

launcher/src/ldconfig.cpp

@@ -1,57 +0,0 @@
-#include <unistd.h>
-#include <string>
-#include <cstring>
-#include <cstdio>
-
-#include <sstream>
-
-#include <libreborn/libreborn.h>
-
-#include "ldconfig.h"
-
-char *get_full_library_search_path() {
-    std::string processed_output;
-    // Run
-    int return_code;
-    const char *ldconfig_argv[] = {"/sbin/ldconfig", "-NXv", NULL};
-    char *output = run_command(ldconfig_argv, &return_code);
-    std::stringstream output_stream((std::string(output)));
-    // Check Exit Code
-    if (return_code != 0) {
-        ERR("ldconfig Failed: Exit Code: %i", return_code);
-    }
-
-    // Read
-    int running = 1;
-    while (running) {
-        std::string line;
-        if (std::getline(output_stream, line)) {
-            // Remove Newline
-            if (line.size() > 0 && line[line.size() - 1] == '\n') {
-                line.pop_back();
-            }
-            // Interpret
-            if (line.size() >= 2 && line[0] != '\t' && line[line.size() - 1] == ':') {
-                // Blacklist RPI Legacy GL Drivers
-#define RPI_LEGACY_GL_PATH "/opt/vc"
-                if (line.rfind(RPI_LEGACY_GL_PATH ":", 0) != 0 && line.rfind(RPI_LEGACY_GL_PATH "/", 0) != 0) {
-                    processed_output.append(line);
-                }
-            }
-        } else {
-            running = 0;
-        }
-    }
-    // Free Output
-    free(output);
-
-    // Remove Colon
-    if (processed_output.size() > 0 && processed_output[processed_output.size() - 1] == ':') {
-        processed_output.pop_back();
-    }
-
-    // Return
-    char *output_str = strdup(processed_output.c_str());
-    ALLOC_CHECK(output_str);
-    return output_str;
-}

launcher/src/patchelf.c

@@ -0,0 +1,87 @@
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+#include <libreborn/libreborn.h>
+
+#include "bootstrap.h"
+#include "patchelf.h"
+
+// Duplicate MCPI Executable Into /tmp
+static void duplicate_mcpi_executable() {
+    // Get Original Path
+    const char *original_path = getenv("MCPI_EXECUTABLE_PATH");
+
+    // Generate New File
+    char new_path[] = "/tmp/.minecraft-pi-XXXXXX";
+    int new_file_fd = mkstemp(new_path);
+    if (new_file_fd == -1) {
+        ERR("Unable To Create Temporary File: %s", strerror(errno));
+    }
+    FILE *new_file = fdopen(new_file_fd, "wb");
+    if (new_file == NULL) {
+        ERR("Unable To Open Temporary File: %s", strerror(errno));
+    }
+    set_and_print_env("MCPI_EXECUTABLE_PATH", new_path);
+
+    // Copy Original File
+    {
+        // Open Original File
+        FILE *original_file = fopen(original_path, "rb");
+        if (original_file == NULL) {
+            ERR("Unable To Open File: %s", original_path);
+        }
+
+        // Copy
+#define BUFFER_SIZE 1024
+        char buf[BUFFER_SIZE];
+        size_t bytes_read = 0;
+        while ((bytes_read = fread((void *) buf, 1, BUFFER_SIZE, original_file)) > 0) {
+            fwrite((void *) buf, 1, bytes_read, new_file);
+            if (ferror(new_file) != 0) {
+                ERR("Unable To Write File: %s", new_path);
+            }
+        }
+        if (ferror(original_file) != 0) {
+            ERR("Unable To Read File: %s", original_path);
+        }
+
+        // Close Original File
+        fclose(original_file);
+    }
+
+    // Fix Permissions
+    if (fchmod(new_file_fd, S_IRUSR | S_IWUSR | S_IXUSR) != 0) {
+        ERR("Unable To Set File Permissions: %s: %s", new_path, strerror(errno));
+    }
+
+    // Close New File
+    fclose(new_file);
+    close(new_file_fd);
+}
+
+// Fix MCPI Dependencies
+void patch_mcpi_elf_dependencies(const char *linker) {
+    // Duplicate MCPI executable into /tmp so it can be modified.
+    duplicate_mcpi_executable();
+
+    // Run patchelf
+    const char *const command[] = {
+        "patchelf",
+        "--set-interpreter", linker,
+        "--remove-needed", "libbcm_host.so",
+        "--remove-needed", "libX11.so.6",
+        "--remove-needed", "libEGL.so",
+        "--replace-needed", "libGLESv2.so", "libGLESv1_CM.so.1",
+        getenv("MCPI_EXECUTABLE_PATH"),
+        NULL
+    };
+    int return_code = 0;
+    char *output = run_command(command, &return_code);
+    if (output != NULL) {
+        free(output);
+    }
+    if (return_code != 0) {
+        ERR("patchelf Failed: Exit Code: %i", return_code);
+    }
+}

launcher/src/patchelf.h

@@ -4,7 +4,7 @@
 extern "C" {
 #endif
 
-char *get_full_library_search_path(); // Remember To free()
+void patch_mcpi_elf_dependencies(const char *linker);
 
 #ifdef __cplusplus
 }

libreborn/include/libreborn/string.h

@@ -33,6 +33,9 @@ extern "C" {
 // Sanitize String
 void sanitize_string(char **str, int max_length, unsigned int allow_newlines);
 
+// Starts With
+int starts_with(const char *str, const char *prefix);
+
 #ifdef __cplusplus
 }
 #endif

libreborn/src/patch/patch.c

@@ -115,7 +115,7 @@ void _overwrite_calls(const char *file, int line, void *start, void *target) {
     data.replacement = code_block;
     data.found = 0;
 
-    iterate_text_sections(getenv("MCPI_EXECUTABLE_PATH"), overwrite_calls_callback, &data);
+    iterate_text_sections("/proc/self/exe", overwrite_calls_callback, &data);
 
     // Increment Code Block Position
     increment_code_block();

libreborn/src/util/elf.c

@@ -7,7 +7,7 @@ void iterate_text_sections(const char *exe, text_section_callback_t callback, vo
 
     // Verify Binary
     if (!file_obj) {
-        ERR("%s", "Unable To Open Current Binary");
+        ERR("%s", "Unable To Open Binary");
     }
 
     // Get File Size

libreborn/src/util/exec.c

@@ -97,7 +97,7 @@ char *run_command(const char *const command[], int *return_code) {
         char *output = NULL;
 #define BUFFER_SIZE 1024
         char buf[BUFFER_SIZE];
-        int bytes_read = 0;
+        size_t bytes_read = 0;
         while ((bytes_read = read(output_pipe[0], (void *) buf, BUFFER_SIZE - 1 /* Account For NULL-Terminator */)) > 0) {
             buf[bytes_read] = '\0';
             string_append(&output, "%s", buf);
@@ -107,7 +107,7 @@ char *run_command(const char *const command[], int *return_code) {
         // Get Return Code
         int status;
         waitpid(ret, &status, 0);
-        *return_code = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
+        *return_code = WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE;
 
         // Return
         return output;

libreborn/src/util/string.c

@@ -23,3 +23,8 @@ void sanitize_string(char **str, int max_length, unsigned int allow_newlines) {
         }
     }
 }
+
+// Starts With
+int starts_with(const char *str, const char *prefix) {
+    return strncmp(prefix, str, strlen(prefix)) == 0;
+}

media-layer/stubs/CMakeLists.txt

@@ -7,31 +7,8 @@ set_target_properties(GLESv1_CM PROPERTIES SOVERSION "1")
 
 # Stubs Only Needed For ARM
 if(BUILD_ARM_COMPONENTS)
-    # Stub RPI-Specific Graphics
-    add_library(bcm_host SHARED src/bcm_host.c)
-    # Install
-    install(TARGETS bcm_host DESTINATION "${MCPI_LIB_DIR}")
-
-    # Stub EGL
-    add_library(EGL SHARED src/EGL.c)
-    target_link_libraries(EGL reborn-util media-layer-headers)
-    set_target_properties(EGL PROPERTIES SOVERSION "1")
-    # Stub X11
-    add_library(X11 SHARED src/X11.c)
-    target_link_libraries(X11 reborn-util media-layer-headers)
-    set_target_properties(X11 PROPERTIES SOVERSION "6")
-    # Install
-    if(MCPI_HEADLESS_MODE OR MCPI_USE_MEDIA_LAYER_PROXY)
-        install(TARGETS EGL X11 DESTINATION "${MCPI_LIB_DIR}")
-    else()
-        install(TARGETS EGL X11 DESTINATION "${MCPI_FALLBACK_LIB_DIR}") # Place At The End Of LD_LIBRARY_PATH
-    endif()
-
     # Install Fake GLESv1_CM Stubs In Server Mode
     if(MCPI_HEADLESS_MODE)
         install(TARGETS GLESv1_CM DESTINATION "${MCPI_LIB_DIR}")
     endif()
-
-    # Redirect MCPI To Correct Libraries
-    add_subdirectory(redirect)
 endif()

media-layer/stubs/redirect/CMakeLists.txt

@@ -1,18 +0,0 @@
-project(media-layer-stubs-redirect)
-
-# MCPI Depends On GLESv2, But Uses GLESv1_CM
-add_library(GLESv2_redirect SHARED src/nop.c)
-target_link_libraries(GLESv2_redirect GLESv1_CM)
-target_link_options(GLESv2_redirect PRIVATE "-Wl,--no-as-needed")
-set_target_properties(GLESv2_redirect PROPERTIES OUTPUT_NAME "GLESv2")
-install(TARGETS GLESv2_redirect DESTINATION "${MCPI_LIB_DIR}")
-
-# MCPI links to libEGL.so instead of libEGL.so.1, this creates a fake libEGL.so which redirects it to the correct libEGL.so.1.
-# This is only needed on configurations that don't generate their own libEGL.so.
-if(NOT MCPI_HEADLESS_MODE AND NOT MCPI_USE_MEDIA_LAYER_PROXY)
-    add_library(EGL_redirect SHARED src/nop.c)
-    target_link_libraries(EGL_redirect EGL)
-    target_link_options(EGL_redirect PRIVATE "-Wl,--no-as-needed")
-    set_target_properties(EGL_redirect PROPERTIES OUTPUT_NAME "EGL")
-    install(TARGETS EGL_redirect DESTINATION "${MCPI_LIB_DIR}")
-endif()

media-layer/stubs/redirect/src/nop.c

@@ -1 +0,0 @@
-// NOP

media-layer/stubs/src/EGL.c

@@ -1,39 +0,0 @@
-#include <EGL/egl.h>
-
-#include <libreborn/libreborn.h>
-
-// EGL Is Replaced With GLFW
-
-EGLDisplay eglGetDisplay(__attribute__((unused)) NativeDisplayType native_display) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglInitialize(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLint *major, __attribute__((unused)) EGLint *minor) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglChooseConfig(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLint const *attrib_list, __attribute__((unused)) EGLConfig *configs, __attribute__((unused)) EGLint config_size, __attribute__((unused)) EGLint *num_config) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglBindAPI(__attribute__((unused)) EGLenum api) {
-    IMPOSSIBLE();
-}
-EGLContext eglCreateContext(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLConfig config, __attribute__((unused)) EGLContext share_context, __attribute__((unused)) EGLint const *attrib_list) {
-    IMPOSSIBLE();
-}
-EGLSurface eglCreateWindowSurface(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLConfig config, __attribute__((unused)) NativeWindowType native_window, __attribute__((unused)) EGLint const *attrib_list) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglMakeCurrent(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface draw, __attribute__((unused)) EGLSurface read, __attribute__((unused)) EGLContext context) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglDestroySurface(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface surface) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglDestroyContext(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLContext context) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglTerminate(__attribute__((unused)) EGLDisplay display) {
-    IMPOSSIBLE();
-}
-EGLBoolean eglSwapBuffers(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface surface) {
-    IMPOSSIBLE();
-}

media-layer/stubs/src/X11.c

@@ -1,12 +0,0 @@
-#include <X11/Xlib.h>
-
-#include <libreborn/libreborn.h>
-
-// Raw X11 Is Replaced With GLFW
-
-int XTranslateCoordinates(__attribute__((unused)) void *display, __attribute__((unused)) XID src_w, __attribute__((unused)) XID dest_w, __attribute__((unused)) int src_x, __attribute__((unused)) int src_y, __attribute__((unused)) int *dest_x_return, __attribute__((unused)) int *dest_y_return, __attribute__((unused)) XID *child_return) {
-    IMPOSSIBLE();
-}
-int XGetWindowAttributes(__attribute__((unused)) void *display, __attribute__((unused)) XID w, __attribute__((unused)) XWindowAttributes *window_attributes_return) {
-    IMPOSSIBLE();
-}

media-layer/stubs/src/bcm_host.c

@@ -1,27 +0,0 @@
-#include <stdint.h>
-
-void bcm_host_init(void) {
-}
-
-void bcm_host_deinit(void) {
-}
-
-int32_t graphics_get_display_size(__attribute__((unused)) const uint16_t display_number, __attribute__((unused)) uint32_t *width, __attribute__((unused)) uint32_t *height) {
-    return -1;
-}
-
-uint32_t vc_dispmanx_display_open(__attribute__((unused)) uint32_t device) {
-    return 0;
-}
-
-uint32_t vc_dispmanx_element_add(__attribute__((unused)) uint32_t update, __attribute__((unused)) uint32_t display, __attribute__((unused)) int32_t layer, __attribute__((unused)) const void *dest_rect, __attribute__((unused)) uint32_t src, __attribute__((unused)) const void *src_rect, __attribute__((unused)) uint32_t protection, __attribute__((unused)) void *alpha, __attribute__((unused)) void *clamp, __attribute__((unused)) uint32_t transform) {
-    return 0;
-}
-
-uint32_t vc_dispmanx_update_start(__attribute__((unused)) int32_t priority) {
-    return 0;
-}
-
-int vc_dispmanx_update_submit_sync(__attribute__((unused)) uint32_t update) {
-    return 0;
-}

mods/CMakeLists.txt

@@ -7,7 +7,7 @@ add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
 
 ## Mods
 
-add_library(compat SHARED src/compat/compat.c src/compat/egl.c src/compat/x11.c)
+add_library(compat SHARED src/compat/compat.c src/compat/egl.c src/compat/x11.c src/compat/bcm_host.c)
 target_link_libraries(compat reborn-patch media-layer-core)
 
 add_library(readdir SHARED src/readdir/readdir.c)

mods/src/compat/bcm_host.c

@@ -0,0 +1,18 @@
+#include <libreborn/libreborn.h>
+
+// Do Nothing Function
+static void do_nothing() {
+    // NOP
+}
+
+// Patch bcm_host Calls
+__attribute__((constructor)) static void patch_bcm_host_calls() {
+    // Disable bcm_host Calls
+    overwrite_call((void *) 0xdfec, (void *) do_nothing); // bcm_host_init
+    overwrite_call((void *) 0x12418, (void *) do_nothing); // bcm_host_deinit
+    overwrite_call((void *) 0x125a8, (void *) do_nothing); // graphics_get_display_size
+    overwrite_call((void *) 0x125dc, (void *) do_nothing); // vc_dispmanx_display_open
+    overwrite_call((void *) 0x125e8, (void *) do_nothing); // vc_dispmanx_update_start
+    overwrite_call((void *) 0x12618, (void *) do_nothing); // vc_dispmanx_element_add
+    overwrite_call((void *) 0x12624, (void *) do_nothing); // vc_dispmanx_update_submit_sync
+}

mods/src/compat/compat.c

@@ -28,6 +28,25 @@ HOOK(SDL_ShowCursor, int, (int toggle)) {
     return (*real_SDL_ShowCursor)(toggle == SDL_QUERY ? SDL_QUERY : SDL_DISABLE);
 }
 
+// Hook SDL_Quit
+HOOK(SDL_Quit, __attribute__((noreturn)) void, ()) {
+    // Cleanup Executable
+    {
+        const char *exe = getenv("MCPI_EXECUTABLE_PATH");
+        // Check If Executable Is Temporary
+        if (exe != NULL && starts_with(exe, "/tmp")) {
+            // Cleanup Temporary File
+            if (unlink(exe) != 0) {
+                ERR("Unable To Cleanup Temporary File: %s", strerror(errno));
+            }
+        }
+    }
+
+    // Call Original Method
+    ensure_SDL_Quit();
+    (*real_SDL_Quit)();
+}
+
 // Intercept SDL Events
 HOOK(SDL_PollEvent, int, (SDL_Event *event)) {
     // In Server Mode, Exit Requests Are Handled In src/server/server.cpp

mods/src/override/override.c

@@ -10,11 +10,6 @@
 
 #include "../home/home.h"
 
-// Check If String Starts With Prefix
-static int starts_with(const char *s, const char *t) {
-    return strncmp(s, t, strlen(t)) == 0;
-}
-
 // Get Override Path For File (If It Exists)
 char *override_get_path(const char *filename) {
     // Get MCPI Home Path

scripts/generate-appimage-builder-yaml.js

@@ -23,7 +23,8 @@ const version = fs.readFileSync('VERSION', 'utf8').trim();
 // Packages/Dependencies
 const packages = [
     'libc6',
-    'libstdc++6'
+    'libstdc++6',
+    'patchelf'
 ];
 if (mode === 'client') {
     // GLFW's Dependencies Aren't Included As They Should Be Provided By The Host System

scripts/install-dependencies.sh

@@ -37,7 +37,8 @@ queue_pkg \
 queue_pkg \
     libfreeimage3 libfreeimage-dev \
     libopenal-dev \
-    qemu-user
+    qemu-user \
+    patchelf
 
 # GLFW Dependencies
 queue_pkg \