added cross compile fix

Author: matt2005

build.sh

@@ -143,6 +143,54 @@ mkdir -p "${BUILD_DIR}"
 TARGET_ARCH=$(dpkg-architecture -qDEB_HOST_ARCH 2>/dev/null || echo "amd64")
 echo "Target architecture: ${TARGET_ARCH}"
 
+find_cross_compiler() {
+    local prefix="$1"
+    local compiler=""
+    
+    # First try the base name (might be a symlink to latest)
+    if command -v "${prefix}gcc" &> /dev/null; then
+        compiler="$(command -v "${prefix}gcc")"
+    else
+        # Find all versioned compilers and pick the latest
+        local candidates=($(ls /usr/bin/${prefix}gcc-* 2>/dev/null | sort -V))
+        if [ ${#candidates[@]} -gt 0 ]; then
+            compiler="${candidates[-1]}"
+        fi
+    fi
+    
+    if [ -n "$compiler" ]; then
+        echo "$compiler"
+        return 0
+    else
+        return 1
+    fi
+}
+
+setup_cross_compilation() {
+    if [ "$TARGET_ARCH" != "amd64" ]; then
+        echo "Setting up cross-compilation for ${TARGET_ARCH}..."
+        
+        case $TARGET_ARCH in
+            arm64)
+                local c_compiler=$(find_cross_compiler "aarch64-linux-gnu-")
+                if [ $? -eq 0 ]; then
+                    CMAKE_ARGS+=(-DCMAKE_C_COMPILER="$c_compiler")
+                    CMAKE_ARGS+=(-DCMAKE_CXX_COMPILER="${c_compiler/gcc/g++}")
+                fi
+                ;;
+            armhf)
+                local c_compiler=$(find_cross_compiler "arm-linux-gnueabihf-")
+                if [ $? -eq 0 ]; then
+                    CMAKE_ARGS+=(-DCMAKE_C_COMPILER="$c_compiler")
+                    CMAKE_ARGS+=(-DCMAKE_CXX_COMPILER="${c_compiler/gcc/g++}")
+                fi
+                ;;
+        esac
+    fi
+}
+
+setup_cross_compilation
+
 # Compute distro-specific release suffix
 if [ -f "${SOURCE_DIR}/scripts/distro_release.sh" ]; then
     DISTRO_DEB_RELEASE=$(bash "${SOURCE_DIR}/scripts/distro_release.sh")