#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ(2.59)
AC_INIT(ikarus, 0.0.3, aghuloum@cs.indiana.edu)
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE(ikarus, 0.0.3)
AC_CONFIG_SRCDIR([src/])


AM_PROG_AS
# Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O


CFLAGS="$CFLAGS -DNDEBUG -O3 -Wall"

case "$target_os" in
  *linux*)
    LDFLAGS="-rdynamic $LDFLAGS"
    ;;
  *bsd*)
    LDFLAGS="-Wl,-E $LDFLAGS"
    ;;
  *cygwin*)
    LDFLAGS="-Wl,-E -Wl,--export-all-symbols $LDFLAGS"
    ;;
  esac

AC_CHECK_SIZEOF(void *)
if test "$ac_cv_sizeof_void_p" = 4; then
   AC_DEFINE(FLAT_TABLES, 1, 
     [use flat segment and dirty vectors (not used yet)])
fi


# Checks for libraries.
AC_SEARCH_LIBS(dlsym, dl,, [AC_MSG_ERROR([Cannot find libdl])])
AC_SEARCH_LIBS(cos, m,, [AC_MSG_ERROR([Cannot find libm])])
AC_SEARCH_LIBS(nanosleep, rt,, [AC_MSG_ERROR([Cannot find nanosleep])])
AC_SEARCH_LIBS(socket, socket,, [AC_MSG_ERROR([Cannot find socket])])


# Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT


AC_CHECK_HEADERS([assert.h dlfcn.h errno.h fcntl.h signal.h \
                  stdint.h stdlib.h string.h strings.h \
                  sys/mman.h sys/resource.h sys/stat.h \
                  sys/time.h sys/types.h sys/wait.h time.h \
                  unistd.h])

AC_CHECK_HEADERS([gmp.h],,[AC_MSG_ERROR([
ERROR: Cannot find libgmp. 
ERROR: You might want to supply CFLAGS=-I</path/to/include> (containing
ERROR: the gmp.h header file), and LDFLAGS=-L</path/to/lib> (containing
ERROR: libgmp.so) if libgmp is installed in a non-standard location.
ERROR: libgmp can be obtained from <http://gmplib.org>. ])])

# check that gmp is present
AC_HAVE_LIBRARY([gmp],,[AC_MSG_ERROR([
ERROR: Cannot find libgmp. 
ERROR: You might want to supply CFLAGS=-I</path/to/include> (containing
ERROR: the gmp.h header file), and LDFLAGS=-L</path/to/lib> (containing
ERROR: libgmp.so) if libgmp is installed in a non-standard location.
ERROR: libgmp can be obtained from <http://gmplib.org>. ])])

AC_ARG_ENABLE(libffi,
  [  --enable-libffi     enable support for libffi.])

if test "$enable_libffi" = "yes"; then

AC_CHECK_HEADERS([ffi.h],,
    AC_MSG_ERROR([ffi.h cannot be found.
Please specify the location of the header file using
  ./configure CFLAGS=-I<path/to/ffi.h>   <other-options ...>
]))

AC_CHECK_LIB(ffi,ffi_call,,
    AC_MSG_ERROR([libffi cannot be found.
Please specify the location of the library file using
  ./configure LDFLAGS=-L<path/to/libffi.ld|dylib|so|etc.>  <other-options ...>
]))

AC_DEFINE(ENABLE_LIBFFI, 1, [adds support for libffi])

fi

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_C_RESTRICT
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_STRUCT_TM

# Checks for library functions.
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_STAT
AC_FUNC_STRFTIME
AC_FUNC_STRTOD
AC_CHECK_FUNCS([sigaltstack bzero gettimeofday memmove memset munmap setenv sqrt strerror getaddrinfo])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES(Makefile src/Makefile scheme/Makefile doc/Makefile lib/Makefile benchmarks/Makefile)
AC_OUTPUT #(Makefile src/Makefile scheme/Makefile doc/Makefile)