Build for Linux ARM.

Author: orbitalquark

.github/workflows/release.yml

@@ -7,13 +7,13 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2019, macOS-13]
+        os: [ubuntu-20.04, windows-2019, macOS-13, ubuntu-22.04-arm]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Checkout textadept-build dependencies
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: orbitalquark/textadept-build
           path: textadept-build
@@ -25,9 +25,9 @@ jobs:
           cmake --build build --config Release --target diff -j
           cmake --install build --config Release
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: artifacts
+          name: artifacts-${{ matrix.os }}
           path: |
             *.so
             *.dll
@@ -36,11 +36,11 @@ jobs:
     needs: build
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
-          name: artifacts
+          merge-multiple: true
       - name: Package
         shell: bash
         run: |

CMakeLists.txt

@@ -17,7 +17,7 @@ set(diff_match_patch_zip 7f95b37e554453262e2bcda830724fc362614103.zip)
 FetchContent_Declare(diff_match_patch
 	URL https://github.com/leutloff/diff-match-patch-cpp-stl/archive/${diff_match_patch_zip})
 FetchContent_MakeAvailable(diff_match_patch)
-set(lua_tgz lua-5.4.4.tar.gz)
+set(lua_tgz lua-5.4.7.tar.gz)
 set(lua_url file://${CMAKE_BINARY_DIR}/_deps/${lua_tgz})
 if(NOT EXISTS ${CMAKE_BINARY_DIR}/_deps/${lua_tgz})
 	set(lua_url https://www.lua.org/ftp/${lua_tgz})
@@ -45,7 +45,11 @@ endif()
 # Install.
 install(TARGETS diff DESTINATION ${src})
 if(NOT (WIN32 OR APPLE))
-	install(CODE "file(RENAME ${src}/libdiff.so ${src}/diff.so)")
+	if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch")
+		install(CODE "file(RENAME ${src}/libdiff.so ${src}/diff.so)")
+	else()
+		install(CODE "file(RENAME ${src}/libdiff.so ${src}/diffarm.so)")
+	endif()
 elseif(APPLE)
 	install(CODE "file(RENAME ${src}/libdiff.dylib ${src}/diffosx.so)")
 endif()

diff.cxx

@@ -28,4 +28,5 @@ int luaopen_diff(lua_State *L) { return (lua_pushcfunction(L, diff), 1); }
 // Platform-specific Lua library entry points.
 LUALIB_API int luaopen_file_diff_diff(lua_State *L) { return luaopen_diff(L); }
 LUALIB_API int luaopen_file_diff_diffosx(lua_State *L) { return luaopen_diff(L); }
+LUALIB_API int luaopen_file_diff_diffarm(lua_State *L) { return luaopen_diff(L); }
 }

init.lua

@@ -97,7 +97,11 @@ if not rawget(_L, 'Compare Files') then
 end
 
 local lib = 'file_diff.diff'
-if OSX then lib = lib .. 'osx' end
+if OSX then
+	lib = lib .. 'osx'
+elseif LINUX and io.popen('uname -m'):read() == 'aarch64' then
+	lib = lib .. 'arm'
+end
 local diff = require(lib)
 local DELETE, INSERT = 0, 1 -- C++: "enum Operation {DELETE, INSERT, EQUAL};"