add script to install external tools

Author: ckrause

tests/install_external_tools.sh

@@ -0,0 +1,118 @@
+#!/bin/bash
+#
+# Install external tools for LODA testing (Linux only)
+# This script installs:
+# - PARI/GP (from source)
+# - Lean (from official installation script)
+#
+
+set -e
+
+# Check if running on Linux
+if [[ "$(uname -s)" != "Linux" ]]; then
+    echo "Error: This script only supports Linux systems"
+    exit 1
+fi
+
+# Create temporary directory for downloads
+TEMP_DIR=$(mktemp -d)
+trap "rm -rf $TEMP_DIR" EXIT
+
+echo "Installing external tools for LODA tests..."
+echo "Temporary directory: $TEMP_DIR"
+echo ""
+
+# Install PARI/GP
+echo "=== Installing PARI/GP ==="
+echo ""
+
+# PARI/GP version to install
+PARI_VERSION="2.17.3"
+PARI_TAR="pari-${PARI_VERSION}.tar.gz"
+PARI_URL="https://pari.math.u-bordeaux.fr/pub/pari/unix/${PARI_TAR}"
+
+echo "Downloading PARI/GP ${PARI_VERSION}..."
+cd "$TEMP_DIR"
+wget -q --show-progress "$PARI_URL" || curl -L -O "$PARI_URL"
+
+echo "Extracting PARI/GP..."
+tar -xzf "$PARI_TAR"
+cd "pari-${PARI_VERSION}"
+
+echo "Configuring PARI/GP..."
+./Configure --prefix=/usr/local
+
+echo "Building PARI/GP (this may take several minutes)..."
+make -j$(nproc)
+
+echo "Installing PARI/GP..."
+sudo make install
+
+echo "PARI/GP installation complete!"
+echo ""
+
+# Verify PARI/GP installation
+if command -v gp &> /dev/null; then
+    echo "PARI/GP version:"
+    gp --version-short
+    echo ""
+else
+    echo "Warning: gp command not found in PATH"
+    echo ""
+fi
+
+# Install Lean
+echo "=== Installing Lean ==="
+echo ""
+
+# Check if elan (Lean version manager) is already installed
+if command -v elan &> /dev/null; then
+    echo "Elan (Lean version manager) is already installed"
+    echo "Updating Lean..."
+    elan self update
+    elan update
+else
+    echo "Installing Lean via elan (Lean version manager)..."
+    cd "$TEMP_DIR"
+    
+    # Download and run the elan installation script
+    curl -sSf https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -o elan-init.sh
+    chmod +x elan-init.sh
+    
+    # Run the installer with default options (non-interactive)
+    ./elan-init.sh -y --default-toolchain stable
+    
+    # Source the environment
+    if [ -f "$HOME/.elan/env" ]; then
+        source "$HOME/.elan/env"
+    fi
+fi
+
+echo "Lean installation complete!"
+echo ""
+
+# Verify Lean installation
+if command -v lean &> /dev/null; then
+    echo "Lean version:"
+    lean --version
+    echo ""
+else
+    echo "Warning: lean command not found in PATH"
+    echo "You may need to add ~/.elan/bin to your PATH:"
+    echo "  export PATH=\"\$HOME/.elan/bin:\$PATH\""
+    echo ""
+fi
+
+echo "=== Installation Summary ==="
+echo ""
+echo "All external tools have been installed successfully!"
+echo ""
+echo "PARI/GP: $(command -v gp &> /dev/null && echo 'Installed' || echo 'Not found in PATH')"
+echo "Lean:    $(command -v lean &> /dev/null && echo 'Installed' || echo 'Not found in PATH')"
+echo ""
+echo "To enable external tool tests, set the environment variable:"
+echo "  export LODA_TEST_WITH_EXTERNAL_TOOLS=1"
+echo ""
+echo "Then run tests with:"
+echo "  ./loda test"
+echo ""