hfsutils/configure.standalone

#!/bin/bash
# Simple configure script for standalone HFS utilities

set -e

# Default values
PREFIX="/usr/local"
SBINDIR=""
CC="gcc"
CFLAGS="-g -O2"
ENABLE_DEBUG="no"
ENABLE_STATIC="no"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Helper functions
log_info() {
    echo -e "${BLUE}INFO:${NC} $1"
}

log_success() {
    echo -e "${GREEN}SUCCESS:${NC} $1"
}

log_warning() {
    echo -e "${YELLOW}WARNING:${NC} $1"
}

log_error() {
    echo -e "${RED}ERROR:${NC} $1"
}

# Show help
show_help() {
    cat << EOF
Configure script for standalone HFS utilities

Usage: $0 [OPTIONS]

Options:
  --help                Show this help message
  --prefix=DIR          Installation prefix (default: /usr/local)
  --sbindir=DIR         System binary directory (default: PREFIX/sbin)
  --cc=COMPILER         C compiler to use (default: gcc)
  --cflags=FLAGS        Additional C compiler flags
  --enable-debug        Enable debug build
  --enable-static       Enable static linking
  --disable-tests       Disable test suite

Examples:
  $0                                    # Default configuration
  $0 --prefix=/usr --sbindir=/usr/bin   # System installation
  $0 --enable-debug                     # Debug build
  $0 --cc=clang                         # Use clang compiler

EOF
}

# Parse command line arguments
while [[ $# -gt 0 ]]; do
    case $1 in
        --help)
            show_help
            exit 0
            ;;
        --prefix=*)
            PREFIX="${1#*=}"
            shift
            ;;
        --sbindir=*)
            SBINDIR="${1#*=}"
            shift
            ;;
        --cc=*)
            CC="${1#*=}"
            shift
            ;;
        --cflags=*)
            CFLAGS="$CFLAGS ${1#*=}"
            shift
            ;;
        --enable-debug)
            ENABLE_DEBUG="yes"
            shift
            ;;
        --enable-static)
            ENABLE_STATIC="yes"
            shift
            ;;
        --disable-tests)
            ENABLE_TESTS="no"
            shift
            ;;
        *)
            log_error "Unknown option: $1"
            echo "Use --help for usage information"
            exit 1
            ;;
    esac
done

# Set default SBINDIR if not specified
if [[ -z "$SBINDIR" ]]; then
    SBINDIR="$PREFIX/sbin"
fi

# Adjust flags for debug build
if [[ "$ENABLE_DEBUG" == "yes" ]]; then
    CFLAGS="$CFLAGS -DDEBUG -g3 -O0"
    log_info "Debug build enabled"
else
    CFLAGS="$CFLAGS -DNDEBUG"
fi

# Adjust flags for static build
if [[ "$ENABLE_STATIC" == "yes" ]]; then
    CFLAGS="$CFLAGS -static"
    log_info "Static linking enabled"
fi

log_info "Configuring standalone HFS utilities..."

# Check for required tools
log_info "Checking build environment..."

# Check for C compiler
if ! command -v "$CC" >/dev/null 2>&1; then
    log_error "C compiler '$CC' not found"
    log_info "Please install a C compiler (gcc, clang, etc.)"
    exit 1
fi

# Test compiler
log_info "Testing C compiler..."
cat > conftest.c << 'EOF'
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <time.h>
int main() {
    printf("Compiler test OK\n");
    return 0;
}
EOF

if ! $CC $CFLAGS -o conftest conftest.c 2>/dev/null; then
    log_error "C compiler test failed"
    rm -f conftest.c conftest
    exit 1
fi

if ! ./conftest >/dev/null 2>&1; then
    log_error "Compiled test program failed to run"
    rm -f conftest.c conftest
    exit 1
fi

rm -f conftest.c conftest
log_success "C compiler works"

# Check for required headers
log_info "Checking for required headers..."
REQUIRED_HEADERS="stdio.h stdlib.h string.h unistd.h fcntl.h errno.h sys/stat.h time.h stdint.h getopt.h"

for header in $REQUIRED_HEADERS; do
    cat > conftest.c << EOF
#include <$header>
int main() { return 0; }
EOF
    
    if ! $CC $CFLAGS -c conftest.c -o conftest.o 2>/dev/null; then
        log_error "Required header '$header' not found"
        rm -f conftest.c conftest.o
        exit 1
    fi
    rm -f conftest.c conftest.o
done

log_success "All required headers found"

# Check for make
if ! command -v make >/dev/null 2>&1; then
    log_warning "make not found - you'll need to compile manually"
else
    log_success "make found"
fi

# Create config.mk
log_info "Creating configuration..."

cat > config.mk << EOF
# Generated by configure.standalone
# $(date)

# Installation directories
PREFIX = $PREFIX
SBINDIR = $SBINDIR

# Build tools
CC = $CC
CFLAGS = $CFLAGS

# Build options
ENABLE_DEBUG = $ENABLE_DEBUG
ENABLE_STATIC = $ENABLE_STATIC
EOF

# Create simple Makefile if it doesn't exist
if [[ ! -f Makefile ]]; then
    log_info "Creating Makefile..."
    cp Makefile.standalone Makefile
fi

# Show configuration summary
log_success "Configuration complete!"
echo
echo "Configuration Summary:"
echo "  Installation prefix:  $PREFIX"
echo "  System binary dir:    $SBINDIR"
echo "  C compiler:           $CC"
echo "  C flags:              $CFLAGS"
echo "  Debug build:          $ENABLE_DEBUG"
echo "  Static linking:       $ENABLE_STATIC"
echo
echo "Next steps:"
echo "  make                  # Build utilities"
echo "  make test             # Run tests"
echo "  make install          # Install utilities"
echo "  make clean            # Clean build files"
echo
log_info "You can now run 'make' to build the utilities"