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

AC_PREREQ(2.59)
AC_INIT([node], [0.3.0], [ryan@joyent.com])

AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([src/node.cc])

AC_CANONICAL_BUILD
AC_CANONICAL_TARGET

config_file=config.mak.autogen
config_append=config.mak.append
config_in=config.mak.in

echo "# ${config_append}.  Generated by configure." > "${config_append}"

#dnl Search for pkg-config
#AC_PATH_PROG(PKG_CONFIG, pkg-config)


# TODO support options
#  --efence              Build with -lefence for debugging [Default: False]
#  --without-snapshot    Build without snapshotting V8 libraries. You might want to set this for cross-compiling.
#                        [Default: False]
#  --without-ssl         Build without SSL
#  --shared-v8           Link to a shared V8 DLL instead of static linking
#  --shared-v8-includes=SHARED_V8_INCLUDES
#                        Directory containing V8 header files
#  --shared-v8-libpath=SHARED_V8_LIBPATH
#                        A directory to search for the shared V8 DLL
#  --shared-v8-libname=SHARED_V8_LIBNAME
#                        Alternative lib name to link to (default: 'v8')
#  --shared-cares        Link to a shared C-Ares DLL instead of static linking
#  --shared-cares-includes=SHARED_CARES_INCLUDES
#                        Directory containing C-Ares header files
#  --shared-cares-libpath=SHARED_CARES_LIBPATH
#                        A directory to search for the shared C-Ares DLL
#  --shared-libev        Link to a shared libev DLL instead of static linking
#  --shared-libev-includes=SHARED_LIBEV_INCLUDES
#                        Directory containing libev header files
#  --shared-libev-libpath=SHARED_LIBEV_LIBPATH
#                        A directory to search for the shared libev DLL

# ------------------------------------------------------------------------------
# Checks

# $arch (only those we support, i.e. lowest common denominator)
# Customize by e.g: ./configure --target=i386-apple-darwin
AC_MSG_CHECKING([target architecture identifier])
case "$target_cpu" in
  x64|x86_64|ia64)            arch=x64 ;;
  ia32|i386|i486|i586|i686)   arch=ia32 ;;
  arm|armeb)                  arch=arm ;;
  *) AC_MSG_ERROR([Unsupported target architecture: $target_cpu]) ;;
esac
AC_SUBST(arch,[${arch}])
AC_MSG_RESULT([$arch])

# CFLAGS += -m{32,64}
if ( echo "$build_cpu" | egrep -q 'x64|x86_64|ia64' ); then
	if test "$arch" = "ia32"; then CFLAGS="${CFLAGS} -m32"; fi
else
	if test "$arch" = "x64"; then CFLAGS="${CFLAGS} -m64" ;fi
fi

# $platform (only those we support, i.e. [[ -d deps/c-ares/${platform}-* ]])
AC_MSG_CHECKING([target platform identifier])
if test "$target_os" = "none"; then target_os="$build_os"; fi
case "$target_os" in
  #android*)         platform=android ;;
  cygwin*)          platform=cygwin ;;
  darwin*)          platform=darwin ;;
  freebsd*)         platform=freebsd ;;
  linux*)           platform=linux ;;
  openbsd*)         platform=openbsd ;;
  *solaris*|sunos*) platform=solaris ;;
  #win32*)           platform=win32 ;;
  *) AC_MSG_ERROR([Unsupported target platform: $target_os]) ;;
esac
AC_SUBST(platform,[${platform}])
AC_MSG_RESULT([$platform])

# Darwin cross-compilation target -arch flag
if test "$platform" = "darwin"; then
	CFLAGS="${CFLAGS} -arch ${target_cpu}";
	LDFLAGS="${LDFLAGS} -arch ${target_cpu}"
fi

# Checks for programs.
AC_CHECK_PROGS(TAR, [gtar tar])
AC_CHECK_TOOLS(AR, [gar ar], :)
AC_PROG_MKDIR_P
AC_PROG_LN_S
AC_PROG_INSTALL

# Checks for header files
AC_HEADER_STDC

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_C_CHAR_UNSIGNED
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T

# Checks for library functions.
AC_FUNC_FORK
AC_FUNC_STAT
AC_SEARCH_LIBS([dlopen], [dl dld], [], [
  AC_MSG_ERROR([Unable to find the dlopen() function])
])

# TODO FIXME: Check for OpenSSL -- expect it to exist for now
AC_SUBST([HAVE_OPENSSL],[1])


# check for -lsocket on solaris
AC_CHECK_LIB([c], [socket], [WANT_SOCKET=], [WANT_SOCKET=1])
AC_SUBST(WANT_SOCKET)



# ------------------------------------------------------------------------------
# Embedded dependencies

m4_include([deps/libev/libev.m4])
m4_include([deps/libeio/libeio.m4])

AC_CONFIG_HEADERS([build/deps/libev/config.h:deps/libev/config.h.in])
AC_CONFIG_HEADERS([build/deps/libeio/config.h:deps/libeio/config.h.in])

AC_CONFIG_FILES(["${config_file}":"${config_in}"])

mkdir -p build/debug/src                build/release/src 
mkdir -p build/debug/deps/libev         build/release/deps/libev 
mkdir -p build/debug/deps/libeio        build/release/deps/libeio
mkdir -p build/debug/deps/c-ares        build/release/deps/c-ares
mkdir -p build/debug/deps/http_parser   build/release/deps/http_parser
mkdir -p build/debug/deps/v8            build/release/deps/v8
mkdir -p build/debug/lib/pkgconfig      build/release/lib/pkgconfig

# ------------------------------------------------------------------------------
# Output files
AC_OUTPUT

# ------------------------------------------------------------------------------
# Cleanup
rm -f "${config_append}"