diff --git a/build-arm-virtio.sh b/build-arm-virtio.sh
new file mode 100755
index 0000000..6af664f
--- /dev/null
+++ b/build-arm-virtio.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+export KERNEL_ARCH="arm"
+export TARGET_TRIPLET_ARCH="arm"
+export TARGET_TRIPLET_VENDOR="lfs"
+export TARGET_TRIPLET_OS="linux"
+export TARGET_TRIPLET_GNUEABI="gnueabi"
+
+bash build.sh
\ No newline at end of file
diff --git a/build.sh b/build.sh
index 073f79c..5f3aaf8 100755
--- a/build.sh
+++ b/build.sh
@@ -39,24 +39,22 @@ fi
 
 export BASE_DIR=$(pwd)
 
-if [ -z "$ARCH" ]; then
-    echo "You must set a target architecture among supported ones:"
+if [ -z "$KERNEL_ARCH" ]; then
+    echo "You must set a kernel target architecture among supported ones:"
     echo "i386"
     echo "x86_64"
-    echo "armv5"
+    echo "arm"
 
     exit 1
 fi
 
-if [ -z "$LFS_TGT" ]; then
-    if [ -z "$GNUEABI" ]; then
-        export GNUEABI="gnu"
-    fi
-
-    export LFS_TGT="$ARCH-lfs-linux-$GNUEABI"
-    echo "Target triplet set to '$LFS_TGT'. You can specify another one with the LFS_TGT env var."
+if [ -z "$TARGET_TRIPLET_ARCH" ] || [ -z "$TARGET_TRIPLET_VENDOR" ] || [ -z "$TARGET_TRIPLET_OS" ] || [ -z "$TARGET_TRIPLET_GNUEABI" ]; then
+    echo "You MUST define TARGET_TRIPLET_ARCH, TARGET_TRIPLET_VENDOR, TARGET_TRIPLET_OS and TARGET_TRIPLET_GNUEABI"
+    exit 1
 fi
 
+export LFS_TGT="$TARGET_TRIPLET_ARCH-$TARGET_TRIPLET_VENDOR-$TARGET_TRIPLET_OS-$TARGET_TRIPLET_GNUEABI"
+
 if [ ! -d "$LFS_TGT" ]; then
     export LFS="$(pwd)/out/$LFS_TGT/rootfs"
 
@@ -181,7 +179,7 @@ if [ ! -f "$STEPS_DIR/linux-headers" ]; then
     fi
     cd "$LFS_BUILD/linux"
     make mrproper
-    make headers_install ARCH="$ARCH" INSTALL_HDR_PATH="$LFS/usr"
+    make headers_install ARCH="$KERNEL_ARCH" INSTALL_HDR_PATH="$LFS/usr"
     cd "$BASE_DIR"
     #rm -rf "$LFS_BUILD/linux"
     touch "$STEPS_DIR/linux-headers"
@@ -227,7 +225,7 @@ if [ ! -f "$STEPS_DIR/gcc-step1" ]; then
         --enable-languages=c
     make -j 32 all-gcc # if build fails add --disable-libsanitizer
     make -j 32 install-gcc
-    make check-gcc RUNTESTFLAGS=--target_board=$ARCH-sim
+    make check-gcc RUNTESTFLAGS=--target_board=${TARGET_TRIPLET_ARCH}-sim
     cd "$BASE_DIR"
     rm -rf "$LFS_BUILD/gcc/build" # Do not remove the whole gcc directory: we need it for libstdc++
     touch "$STEPS_DIR/gcc-step1"
@@ -1235,11 +1233,12 @@ if [ ! -f "$STEPS_DIR/pcre2" ]; then
     CFLAGS+=" -ffat-lto-objects"
     CXXFLAGS+=" -ffat-lto-objects"
 
+    # WARNING: using prefix with LFS is a VERY BIG WORKAROUND!!!
     "../configure"                       \
         --with-sysroot=${LFS}            \
         --host=${LFS_TGT}                \
         --build=${BUILD_MACHINE_TRIPLET} \
-        --prefix=/usr                    \
+        --prefix=${LFS}/usr              \
         --enable-shared                  \
         --enable-jit                     \
         --enable-pcre2-16                \
@@ -1247,16 +1246,46 @@ if [ ! -f "$STEPS_DIR/pcre2" ]; then
         --enable-pcre2grep-libbz2        \
         --enable-pcre2grep-libz          \
         --enable-pcre2test-libreadline   \
-        --prefix=/usr                    \
         --cache-file=config.cache
 
     make -j 32
-    make -j 32 DESTDIR=$LFS install
+    make -j 32 install
+
+    export CFLAGS="$CFLAGS_old"
+    export CXXFLAGS="$CXXFLAGS_old"
 
     cd "$BASE_DIR"
     rm -rf "$LFS_BUILD/pcre2"
     touch "$STEPS_DIR/pcre2"
 fi
+exit 0
+# build swig
+if [ ! -f "$STEPS_DIR/swig" ]; then
+    if [ ! -d "$LFS_BUILD/swig" ]; then
+        tar -xf "$BASE_DIR/sources/swig-4.3.0.tar.gz"
+        mv "swig-4.3.0" "$LFS_BUILD/swig"
+    fi
+    cd "$LFS_BUILD/swig"
+
+    "./autogen.sh"
+
+    mkdir -vp build-$LFS_TGT
+    cd        build-$LFS_TGT
+
+    "../configure"                       \
+        --with-sysroot=${LFS}            \
+        --host=${LFS_TGT}                \
+        --build=${BUILD_MACHINE_TRIPLET} \
+        --prefix=/usr                    \
+        --cache-file=config.cache
+
+    make -j 32
+    make -j 32 DESTDIR="$LFS" install
+
+    cd "$BASE_DIR"
+    rm -rf "$LFS_BUILD/swig"
+    touch "$STEPS_DIR/swig"
+fi
 
 # build libcap-ng (needs swig)
 if [ ! -f "$STEPS_DIR/libcap-ng" ]; then