#!/bin/sh
# -*- sh -*-
check_feature() {
  local feature="$1"
  local test="$2"

  if "$CHICKEN_CSC" -C "$CFLAGS" -L "$LDFLAGS" "feature-tests/$test.c" >/dev/null 2>/dev/null; then
    feature_flags="$feature_flags -D$feature"
  fi
  rm -f feature-tests/$feature.o feature-tests/$feature
}

feature_flags=""

check_feature madvise madvise
check_feature mmap mmap
check_feature posix-fadvise posix-fadvise
# Avoid false positives by only compiling when CHICKEN agrees that the
# platform matches.
if $CHICKEN_CSI -e "(cond-expand ((or netbsd freebsd openbsd) (exit 0)) (else (exit 1)))"; then
    check_feature sendfile sendfile-bsd
fi
if $CHICKEN_CSI -e "(cond-expand (linux (exit 0)) (else (exit 1)))"; then
    check_feature sendfile sendfile-linux
fi
if $CHICKEN_CSI -e "(cond-expand (macosx (exit 0)) (else (exit 1)))"; then
    check_feature sendfile sendfile-macos
fi
if $CHICKEN_CSI -e "(cond-expand (sun (exit 0)) (else (exit 1)))"; then
    check_feature sendfile sendfile-sun
fi

"$CHICKEN_CSC" $feature_flags -C "$CFLAGS" -L "$LDFLAGS" "$@"