From 40a527bb235f4dbca82cc1b501ffa35be6cd0010 Mon Sep 17 00:00:00 2001
From: TheBrokenRail <connor24nolan@live.com>
Date: Mon, 26 Sep 2022 20:59:46 -0400
Subject: [PATCH] Bundle QEMU

---
 .gitmodules                            |  4 ++++
 dependencies/CMakeLists.txt            |  4 ++++
 dependencies/qemu/CMakeLists.txt       | 33 ++++++++++++++++++++++++++
 dependencies/qemu/src                  |  1 +
 docs/INSTALL.md                        |  3 ---
 libreborn/src/util/exec.c              |  3 ---
 media-layer/core/dependencies/glfw/src |  2 +-
 7 files changed, 43 insertions(+), 7 deletions(-)
 create mode 100644 dependencies/qemu/CMakeLists.txt
 create mode 160000 dependencies/qemu/src

diff --git a/.gitmodules b/.gitmodules
index 75ff9ad6b..0d6b906fa 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -14,3 +14,7 @@
 [submodule "dependencies/LIEF/src"]
 	path = dependencies/LIEF/src
 	url = https://github.com/lief-project/LIEF.git
+[submodule "dependencies/qemu/src"]
+	path = dependencies/qemu/src
+	url = https://gitlab.com/qemu-project/qemu.git
+	ignore = dirty
diff --git a/dependencies/CMakeLists.txt b/dependencies/CMakeLists.txt
index f975e7382..69db2ce55 100644
--- a/dependencies/CMakeLists.txt
+++ b/dependencies/CMakeLists.txt
@@ -16,3 +16,7 @@ endif()
 if(BUILD_NATIVE_COMPONENTS OR (BUILD_ARM_COMPONENTS AND NOT MCPI_SERVER_MODE AND NOT MCPI_USE_MEDIA_LAYER_PROXY))
     add_subdirectory(LIEF)
 endif()
+# QEMU
+if(BUILD_NATIVE_COMPONENTS AND NOT (CMAKE_SYSTEM_PROCESSOR MATCHES "arm*" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64"))
+    add_subdirectory(qemu)
+endif()
diff --git a/dependencies/qemu/CMakeLists.txt b/dependencies/qemu/CMakeLists.txt
new file mode 100644
index 000000000..f0772dc20
--- /dev/null
+++ b/dependencies/qemu/CMakeLists.txt
@@ -0,0 +1,33 @@
+project(qemu)
+
+## QEMU
+
+# Build
+include(ProcessorCount)
+ProcessorCount(NPROC)
+include(ExternalProject)
+ExternalProject_Add(qemu
+    SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/src"
+    CONFIGURE_COMMAND
+        "${CMAKE_COMMAND}" "-E" "env" "PKG_CONFIG_LIBDIR=$ENV{PKG_CONFIG_LIBDIR}"
+        "<SOURCE_DIR>/configure"
+        "--prefix=${CMAKE_INSTALL_PREFIX}"
+        "--cross-prefix="
+        "--cc=${CMAKE_C_COMPILER}"
+        "--cxx=${CMAKE_CXX_COMPILER}"
+        "--target-list=arm-linux-user"
+        "--without-default-features"
+    USES_TERMINAL_CONFIGURE TRUE
+    BUILD_COMMAND "make" "-j${NPROC}" "qemu-arm"
+    USES_TERMINAL_BUILD TRUE
+    INSTALL_COMMAND ""
+    TEST_COMMAND ""
+    BUILD_BYPRODUCTS "<BINARY_DIR>/qemu-arm"
+)
+
+# Install
+ExternalProject_Get_property(qemu BINARY_DIR)
+install(PROGRAMS "${BINARY_DIR}/qemu-arm" DESTINATION "${MCPI_BIN_DIR}")
+
+# License
+install(FILES src/COPYING DESTINATION "${MCPI_LEGAL_DIR}/qemu")
diff --git a/dependencies/qemu/src b/dependencies/qemu/src
new file mode 160000
index 000000000..621da7789
--- /dev/null
+++ b/dependencies/qemu/src
@@ -0,0 +1 @@
+Subproject commit 621da7789083b80d6f1ff1c0fb499334007b4f51
diff --git a/docs/INSTALL.md b/docs/INSTALL.md
index 49e68c7f7..5f49bfc17 100644
--- a/docs/INSTALL.md
+++ b/docs/INSTALL.md
@@ -5,9 +5,6 @@ Download packages [here](https://jenkins.thebrokenrail.com/job/minecraft-pi-rebo
 
 ### System Requirements
 * Debian Buster/Ubuntu 18.04 Or Higher
-* QEMU User-Mode
-  * Debian/Ubuntu: ``sudo apt install qemu-user``
-  * Arch: ``sudo pacman -S qemu-user``
 * Client-Only Dependencies
   * Graphics Drivers
   * GTK+ 3
diff --git a/libreborn/src/util/exec.c b/libreborn/src/util/exec.c
index 95b97bea5..9e34717a4 100644
--- a/libreborn/src/util/exec.c
+++ b/libreborn/src/util/exec.c
@@ -37,9 +37,6 @@ __attribute__((noreturn)) void safe_execvpe(const char *const argv[], const char
     // Run
     int ret = execvpe(argv[0], (char *const *) argv, (char *const *) envp);
     if (ret == -1) {
-        if (errno == ENOENT && strcmp(argv[0], "qemu-qrm")) {
-            ERR("Unable to find QEMU! To install on Ubuntu/Debian, run \"sudo apt install qemu-user\". To install on Arch Linux, run \"sudo pacman -S qemu-user\".");
-        }
         ERR("Unable To Execute Program: %s: %s", argv[0], strerror(errno));
     } else {
         IMPOSSIBLE();
diff --git a/media-layer/core/dependencies/glfw/src b/media-layer/core/dependencies/glfw/src
index c18851f52..dd8a678a6 160000
--- a/media-layer/core/dependencies/glfw/src
+++ b/media-layer/core/dependencies/glfw/src
@@ -1 +1 @@
-Subproject commit c18851f52ec9704eb06464058a600845ec1eada1
+Subproject commit dd8a678a66f1967372e5a5e3deac41ebf65ee127