No way it works...

build-picolibc.sh

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+#!/bin/bash
+# Script to build picolibc for i686 freestanding environment
+
+set -e
+
+PICOLIBC_DIR="picolibc"
+BUILD_DIR="build/picolibc"
+INSTALL_DIR="$(pwd)/picolibc-install"
+
+echo "=== Building Picolibc for i686 freestanding ==="
+
+# Check if picolibc exists
+if [ ! -d "$PICOLIBC_DIR" ]; then
+    echo "Error: Picolibc source not found at $PICOLIBC_DIR"
+    echo "Please clone picolibc manually:"
+    echo "  git clone https://github.com/picolibc/picolibc.git"
+    exit 1
+fi
+
+# Get current version
+cd "$PICOLIBC_DIR"
+CURRENT_VERSION=$(git describe --tags 2>/dev/null || echo "unknown")
+echo "Using picolibc version: $CURRENT_VERSION"
+cd ..
+
+# Create build directory
+mkdir -p "$BUILD_DIR"
+
+echo "Configuring picolibc with meson..."
+meson setup "$BUILD_DIR" "$PICOLIBC_DIR" \
+    --cross-file picolibc-i686.txt \
+    --prefix="$INSTALL_DIR" \
+    --wipe \
+    -Dmultilib=false \
+    -Dpicocrt=false \
+    -Dsemihost=false \
+    -Dspecsdir=none \
+    -Dtinystdio=true \
+    -Dio-long-long=true \
+    -Dformat-default=double \
+    -Dtests=false
+
+echo "Building picolibc..."
+meson compile -C "$BUILD_DIR"
+
+echo "Installing picolibc..."
+meson install -C "$BUILD_DIR"
+
+echo ""
+echo "=== Picolibc build complete! ==="
+echo "Installation directory: $INSTALL_DIR"
+echo ""
+echo "To use picolibc in your kernel:"
+echo "  Include path: -I$INSTALL_DIR/include"
+echo "  Library path: -L$INSTALL_DIR/lib"
+echo "  Link with: -lc"