build: Support and test cross-compiling for linux-aarch64.

'

@@ -0,0 +1,38 @@
+name: Build Tilde Friends
+run-name: ${{ gitea.actor }} running 🚀
+on: [push]
+
+jobs:
+  Build-All:
+    runs-on: ubuntu-latest
+    container:
+      valid_volumes: ['/opt/keys']
+      volumes:
+        - /opt/keys:/opt/keys
+    steps:
+      - name: check out code
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+      - run: ln -s /opt/keys .keys
+      - name: Setup JDK
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v3
+        with:
+          packages: 'tools platform-tools build-tools;34.0.0 platforms;android-34 ndk;26.3.11579264'
+      - run: sudo apt update && sudo apt install -y doxygen graphviz mingw-w64 libgpgme11 gcc-aarch64-linux-gnu
+      - run: ANDROID_SDK=$HOME/.android/sdk make -j`nproc` all docs
+      - run: docker build .
+      - uses: actions/upload-artifact@v3
+        with:
+          path: out/TildeFriends-release.fdroid.apk
+      - uses: actions/upload-artifact@v3
+        with:
+          path: out/winrelease/tildefriends.exe
+      - uses: actions/upload-artifact@v3
+        with:
+          path: out/tildefriends-x86_64.AppImage

.gitea/workflows/build.yaml

@@ -24,7 +24,7 @@ jobs:
         uses: android-actions/setup-android@v3
         with:
           packages: 'tools platform-tools build-tools;34.0.0 platforms;android-34 ndk;26.3.11579264'
-      - run: sudo apt update && sudo apt install -y doxygen graphviz mingw-w64 libgpgme11
+      - run: sudo apt update && sudo apt install -y doxygen graphviz mingw-w64 libgpgme11 gcc-aarch64-linux-gnu
       - run: ANDROID_SDK=$HOME/.android/sdk make -j`nproc` all docs
       - run: docker build .
       - uses: actions/upload-artifact@v3

GNUmakefile

@@ -34,6 +34,7 @@ ANDROID_SDK ?= ~/Android/Sdk
 BUNDLETOOL = out/bundletool.jar
 
 HAVE_WIN := 0
+HAVE_CROSS_AARCH64 := 0
 
 export SOURCE_DATE_EPOCH=1
 export TZ=UTC
@@ -45,6 +46,9 @@ BUILD_TYPES := debug release
 HAVE_ANDROID = $(if $(shell which $(ANDROID_SDK)/platform-tools/adb),1,0)
 HAVE_LINUX_IOS = $(if $(shell which deps/ios_toolchain/target/bin deps/ios_toolchain/target/bin/arm-apple-darwin11-clang),1,0)
 HAVE_WIN = $(if $(shell which x86_64-w64-mingw32-gcc-win32),1,0)
+ifneq ($(UNAME_M),aarch64)
+HAVE_CROSS_AARCH64 = $(if $(shell which aarch64-linux-gnu-gcc),1,0)
+endif
 else ifeq ($(UNAME_S),Haiku)
 BUILD_TYPES := debug release
 CFLAGS += -Dstatic_assert=_Static_assert
@@ -125,6 +129,13 @@ ifeq ($(HAVE_WIN),1)
 BUILD_TYPES += windebug winrelease
 endif
 
+AARCH64_TARGETS := \
+	out/armdebug/tildefriends \
+	out/armrelease/tildefriends
+ifeq ($(HAVE_CROSS_AARCH64),1)
+BUILD_TYPES += armdebug armrelease
+endif
+
 LINUX_TARGETS := \
 	out/debug/tildefriends \
 	out/release/tildefriends
@@ -159,7 +170,8 @@ DEBUG_TARGETS := \
 	out/androiddebug/tildefriends \
 	out/androiddebug-armv7a/tildefriends \
 	out/androiddebug-x86_64/tildefriends \
-	out/androiddebug-x86/tildefriends
+	out/androiddebug-x86/tildefriends \
+	out/armdebug/tildefriends
 RELEASE_TARGETS := \
 	out/release/tildefriends \
 	out/winrelease/tildefriends.exe \
@@ -169,7 +181,8 @@ RELEASE_TARGETS := \
 	out/androidrelease/tildefriends \
 	out/androidrelease-armv7a/tildefriends \
 	out/androidrelease-x86_64/tildefriends \
-	out/androidrelease-x86/tildefriends
+	out/androidrelease-x86/tildefriends \
+	out/armrelease/tildefriends
 ALL_TARGETS = $(DEBUG_TARGETS) $(RELEASE_TARGETS)
 ANDROID_RELEASE_TARGETS := $(filter-out $(DEBUG_TARGETS),$(ANDROID_TARGETS))
 NONANDROID_RELEASE_TARGETS := $(filter-out $(ANDROID_ARM64_TARGETS),$(RELEASE_TARGETS))
@@ -208,6 +221,10 @@ $(WINDOWS_TARGETS): LDFLAGS += \
 	-static \
 	-lm \
 	-Ldeps/openssl/mingw64/usr/local/lib
+$(AARCH64_TARGETS): CC = aarch64-linux-gnu-gcc
+$(AARCH64_TARGETS): AS = $(CC)
+$(AARCH64_TARGETS): CFLAGS += -Ideps/openssl/Linux/aarch64/usr/local/include
+$(AARCH64_TARGETS): LDFLAGS += -Ldeps/openssl/Linux/aarch64/usr/local/lib
 ifeq ($(UNAME_S),Darwin)
 $(MACOS_TARGETS): CC = xcrun clang
 $(IOS_TARGETS): IOS_SYSROOT := $(shell xcrun --sdk iphoneos --show-sdk-path)
@@ -262,7 +279,7 @@ endif
 
 get_objs = \
 	$(foreach build_type,$(BUILD_TYPES),$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)))))) \
-	$(foreach build_type,debug release,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_unix))))) \
+	$(foreach build_type,debug release armdebug armrelease,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_unix))))) \
 	$(foreach build_type,windebug winrelease,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_win))))) \
 	$(foreach build_type,androiddebug androidrelease androiddebug-x86 androidrelease-x86 androiddebug-x86_64 androidrelease-x86_64 androiddebug-armv7a androiddebug-armv7a,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_android))))) \
 	$(foreach build_type,androiddebug androidrelease androiddebug-x86 androidrelease-x86 androiddebug-x86_64 androidrelease-x86_64 androiddebug-armv7a androidrelease-armv7a,$(addprefix $(BUILD_DIR)/$(build_type)/,$(addsuffix .o,$(basename $(value $(1)_unix))))) \
@@ -727,7 +744,7 @@ $(MINIUNZIP_OBJS): CFLAGS += \
 LDFLAGS += \
 	-pthread \
 	-lm
-$(LINUX_TARGETS) $(MACOS_TARGETS) $(IOS_TARGETS) $(IOSSIM_TARGETS): LDFLAGS += \
+$(LINUX_TARGETS) $(MACOS_TARGETS) $(IOS_TARGETS) $(IOSSIM_TARGETS) $(AARCH64_TARGETS): LDFLAGS += \
 	-lssl \
 	-lcrypto
 ifneq ($(UNAME_S),Haiku)
@@ -1113,6 +1130,13 @@ LOCAL_DEPS := deps/openssl/$(UNAME_S)/$(UNAME_M)/usr/local/lib/libssl.a
 $(LOCAL_DEPS):
 	+@tools/ssl-local
 $(filter $(BUILD_DIR)/debug/%,$(APP_OBJS)) $(filter $(BUILD_DIR)/release/%,$(APP_OBJS)): | $(LOCAL_DEPS)
+
+ifeq ($(HAVE_CROSS_AARCH64),1)
+LOCAL_DEPS := deps/openssl/$(UNAME_S)/aarch64/usr/local/lib/libssl.a
+$(LOCAL_DEPS):
+	+@OPTIONS=--cross-compile-prefix=aarch64-linux-gnu- BUILD_TARGET=aarch64 tools/ssl-local
+$(filter $(BUILD_DIR)/armdebug/%,$(APP_OBJS)) $(filter $(BUILD_DIR)/armrelease/%,$(APP_OBJS)): | $(LOCAL_DEPS)
+endif
 endif
 
 ifeq ($(UNAME_S),Darwin)

tools/ssl-local

@@ -1,11 +1,14 @@
 #!/bin/bash
 
-BUILD_DIR=out/openssl_local_build
-
 BUILD_PLATFORM=$(uname -s)
+if [[ -z $BUILD_TARGET ]]; then
 	BUILD_TARGET=$(uname -m)
-
 	WORK_DIR=out/openssl-local
+else
+	WORK_DIR=out/openssl-$BUILD_TARGET
+	SSL_TARGET=linux-$BUILD_TARGET
+fi
+
 rm -rf $WORK_DIR
 cp -aRf deps/openssl_src/ $WORK_DIR