From dccbb4a4b57b89a92f5b29082f2efc0febcd545e Mon Sep 17 00:00:00 2001
From: "long.vu" <vuhailongkl97@gmail.com>
Date: Tue, 30 Apr 2024 11:36:16 +0700
Subject: [PATCH] add support cross-compiling for armv7eabi

---
 cmake/armv7_debian.cmake      | 28 ++++++++++++++++++++++++++++
 cmake/modules/CargoMeta.cmake |  4 ++++
 2 files changed, 32 insertions(+)
 create mode 100644 cmake/armv7_debian.cmake

diff --git a/cmake/armv7_debian.cmake b/cmake/armv7_debian.cmake
new file mode 100644
index 0000000000..459f3a0f42
--- /dev/null
+++ b/cmake/armv7_debian.cmake
@@ -0,0 +1,28 @@
+# this one is important
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR armv7)
+set(CONFIGURE_HOST arm-linux)
+# this one not so much
+set(CMAKE_SYSTEM_VERSION 1)
+
+set(triple arm-linux-gnueabi)
+
+# specify the cross compiler If CMAKE_CLANG is set, use clang, otherwise use gcc
+if(CMAKE_CLANG)
+  set(CMAKE_C_COMPILER clang)
+  set(CMAKE_C_COMPILER_TARGET ${triple})
+  set(CMAKE_CXX_COMPILER clang++)
+  set(CMAKE_CXX_COMPILER_TARGET ${triple})
+else()
+  set(CMAKE_C_COMPILER ${triple}-gcc)
+  set(CMAKE_CXX_COMPILER ${triple}-g++)
+endif()
+
+set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE armel)
+set(CPACK_FILE_NAME_EXTRA bullseye)
+
+# Configure pkg-config to only find target libs
+set(PKG_CONFIG_EXECUTABLE
+    "/usr/bin/${triple}-pkg-config"
+    CACHE PATH "pkg-config")
+set(ENV{PKG_CONFIG_PATH} "/usr/lib/${triple}/pkgconfig")
diff --git a/cmake/modules/CargoMeta.cmake b/cmake/modules/CargoMeta.cmake
index 35f25257e8..fbfb6cb948 100644
--- a/cmake/modules/CargoMeta.cmake
+++ b/cmake/modules/CargoMeta.cmake
@@ -41,6 +41,10 @@ function(get_target_triple CARGO_TARGET_TRIPLE)
     set(CARGO_TARGET_TRIPLE
         "armv7-unknown-linux-gnueabihf"
         PARENT_SCOPE)
+  elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "armv7")
+    set(CARGO_TARGET_TRIPLE
+        "armv7-unknown-linux-gnueabi"
+        PARENT_SCOPE)
   elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
     set(CARGO_TARGET_TRIPLE
         "aarch64-unknown-linux-gnu"