configure.ac

AC_PREREQ([2.69])
AC_INIT([libegt],[1.11-rc2])

AC_CONFIG_HEADERS([config.h])
AC_CONFIG_SRCDIR([Makefile.am])
AC_CONFIG_MACRO_DIR([m4])
AC_USE_SYSTEM_EXTENSIONS

if test "x$program_prefix" = xNONE; then
  program_prefix="egt_"
fi

AC_CANONICAL_TARGET
AC_ARG_PROGRAM

PKG_PROG_PKG_CONFIG

AM_INIT_AUTOMAKE([1.10 foreign subdir-objects tar-ustar])

# Enable quiet compiles on automake 1.11.
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

# Initialize libtool
LT_PREREQ([2.2])
LT_INIT([win32-dll])

AC_LANG(C++)
AC_DISABLE_STATIC
AC_PROG_CXX
AX_CXX_COMPILE_STDCXX(17, noext)
AX_CODE_COVERAGE
AC_PROG_AWK
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_MKDIR_P
AM_PROG_AS

pkgconfigdir=${libdir}/pkgconfig
AC_SUBST(pkgconfigdir)

# do not set CXXFLAGS/CFLAGS before here in order to pickup defaults

AC_MSG_CHECKING([for native WIN32])
case "$host" in
  *-*-mingw*)
      egt_os_win32=yes
      ;;
  *)
      egt_os_win32=no
      ;;
esac
AC_MSG_RESULT([$egt_os_win32])
AM_CONDITIONAL(OS_WIN32, test "$egt_os_win32" = "yes")

if test "x$egt_os_win32" = "xyes"; then
  AX_APPEND_FLAG([-DWIN32], [CXXFLAGS])
  AX_APPEND_FLAG([-DEGT_STATIC], [CXXFLAGS])
  AX_APPEND_FLAG([-DWIN32], [CFLAGS])
  AX_APPEND_FLAG([-DEGT_STATIC], [CFLAGS])
else
  AC_LANG(C)
  AX_APPEND_COMPILE_FLAGS2([-fvisibility=hidden], [CFLAGS], [-Werror])
  AC_LANG(C++)
  AX_APPEND_COMPILE_FLAGS2([-fvisibility=hidden -fvisibility-inlines-hidden], [CXXFLAGS], [-Werror])
fi

AC_MSG_CHECKING([for native ARM])
case "$host" in
  arm*)
      egt_cpu_arm=yes
      ;;
  *)
      egt_cpu_arm=no
      ;;
esac
AC_MSG_RESULT([$egt_cpu_arm])
AM_CONDITIONAL(CPU_ARM, test "$egt_cpu_arm" = "yes")

MAYBE_WARN="-Wall -Wextra \
-pedantic \
-Wfloat-equal \
-Wsign-compare \
-Wpointer-arith \
-Wwrite-strings \
-Wmissing-declarations \
-Wpacked \
-Wno-variadic-macros \
-Wstrict-aliasing \
-Winit-self \
-Woverloaded-virtual \
-Wno-psabi" # no warnings about gcc abi changes

AC_LANG(C)
for W in $MAYBE_WARN; do
    AX_APPEND_COMPILE_FLAGS2([$W], [CFLAGS], [-Werror])
done

AC_LANG(C++)
for W in $MAYBE_WARN; do
    AX_APPEND_COMPILE_FLAGS2([$W], [CXXFLAGS], [-Werror])
done

AC_ARG_ENABLE(sanitize,
  [AS_HELP_STRING([--enable-sanitize],[turn on sanitize analysis tools])],
  [enable_sanitize=$enableval], [enable_sanitize=no])

if test "x$enable_sanitize" = "xyes";
then
  AC_MSG_NOTICE([enabling sanitize])

  AC_LANG(C)
  AX_APPEND_COMPILE_FLAGS2([-fsanitize=address -fsanitize=leak \
  			    -fsanitize=undefined -fno-omit-frame-pointer],
	[CFLAGS],[-Werror],,[AC_MSG_ERROR(sanitize flags not supported)])

  AC_LANG(C++)
  AX_APPEND_COMPILE_FLAGS2([-fsanitize=address -fsanitize=leak \
  			    -fsanitize=undefined -fno-omit-frame-pointer],
	[CXXFLAGS],[-Werror],,[AC_MSG_ERROR(sanitize flags not supported)])
fi

# Checks for header files.
AC_PATH_X
AC_CHECK_HEADERS([fcntl.h float.h inttypes.h locale.h stdint.h])
AC_CHECK_HEADERS([stdlib.h string.h sys/ioctl.h sys/socket.h sys/time.h])
AC_CHECK_HEADERS([unistd.h glob.h])

AC_CHECK_HEADERS([cxxabi.h])
AC_SEARCH_LIBS([__cxa_demangle], [], [have_cxa_demangle=yes], [have_cxa_demangle=no])
if test "x${have_cxa_demangle}" = xyes; then
   AC_DEFINE(HAVE_CXA_DEMANGLE, 1, [Have __cxa_demangle])
fi

AC_CHECK_HEADERS([linux/gpio.h],[have_linux_gpio_h=yes],[])
AM_CONDITIONAL([HAVE_LINUX_GPIO_H], [test "x${have_linux_gpio_h}" = xyes])

AC_ARG_ENABLE([debug],
  [AS_HELP_STRING([--enable-debug], [enable debugging support [default=yes]])],
  [enable_debug=$enableval], [enable_debug=yes])

if test "x$enable_debug" = "xno" ; then
  AC_MSG_NOTICE([enabling optimization flags])
  AX_APPEND_FLAG([-DNDEBUG], [CXXFLAGS])
  AX_APPEND_FLAG([-DNDEBUG], [CFLAGS])
  OPT_FLAGS="-fno-math-errno -fmerge-all-constants -ftree-vectorize \
  		-ffunction-sections -fdata-sections \
		-finline-small-functions -findirect-inlining"
  for F in $OPT_FLAGS; do
      AC_LANG(C)
      AX_APPEND_COMPILE_FLAGS2([$F], [CFLAGS], [-Werror])
      AC_LANG(C++)
      AX_APPEND_COMPILE_FLAGS2([$F], [CXXFLAGS], [-Werror])
  done
  AX_APPEND_COMPILE_FLAGS2([-Wl,--gc-sections], [LDFLAGS])
else
  AX_APPEND_FLAG([-DEGTLOG_ACTIVE_LEVEL=0], [CXXFLAGS])
fi

AC_ARG_ENABLE(gcov,
  [AS_HELP_STRING([--enable-gcov],[turn on code coverage analysis tools])],
  [enable_gcov=$enableval], [enable_gcov=no])

# Check for --enable-gcov and add appropriate flags for gcc
if test "x$enable_gcov" = "xyes";
then
  AC_LANG(C)
  AX_APPEND_COMPILE_FLAGS2([--coverage],
	[CFLAGS],[-Werror],,[AC_MSG_ERROR(coverage flags not supported)])

  AC_LANG(C++)
  AX_APPEND_COMPILE_FLAGS2([--coverage],
	[CXXFLAGS],[-Werror],,[AC_MSG_ERROR(coverage flags not supported)])

  AX_APPEND_COMPILE_FLAGS2([-lgcov],
	[LDFLAGS],[-Werror],,[AC_MSG_ERROR(coverage flags not supported)])

  # Turn off optimization so code coverage tool
  # can get accurate line numbers
  CFLAGS=`echo "$CFLAGS" | sed -e 's/-O[0-9a-z]*//g'`
  CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/-O[0-9a-z]*//g'`
fi

AC_ARG_ENABLE(profile,
  [AS_HELP_STRING([--enable-profile],[turn on profiling tools])],
  [enable_profile=$enableval], [enable_profile=no])

if test "x$enable_profile" = "xyes";
then
  AC_LANG(C)
  AX_APPEND_COMPILE_FLAGS2([-pg],
	[CFLAGS],[-Werror],,[AC_MSG_ERROR(profile flags not supported)])

  AC_LANG(C++)
  AX_APPEND_COMPILE_FLAGS2([-pg],
	[CXXFLAGS],[-Werror],,[AC_MSG_ERROR(profile flags not supported)])
fi

AC_ARG_ENABLE([icons],
  [AS_HELP_STRING([--disable-icons], [do not install icons [default=no]])],
  [enable_icons=$enableval], [enable_icons=yes])
AM_CONDITIONAL([ENABLE_ICONS], [test "x${enable_icons}" = xyes])

AC_ARG_ENABLE([examples],
  [AS_HELP_STRING([--enable-examples], [build examples [default=yes]])],
  [enable_examples=$enableval], [enable_examples=yes])
AM_CONDITIONAL([ENABLE_EXAMPLES], [test "x${enable_examples}" = xyes])

AC_ARG_ENABLE([virtualkeyboard],
  [AS_HELP_STRING([--disable-virtualkeyboard], [include support for virtualkeyboard [default=yes]])],
  [enable_virtualkeyboard=$enableval], [enable_virtualkeyboard=yes])
AM_CONDITIONAL([ENABLE_VIRTUALKEYBOARD], [test "x${enable_virtualkeyboard}" = xyes])
if test "x${enable_virtualkeyboard}" = xyes; then
   AC_DEFINE(ENABLE_VIRTUALKEYBOARD, 1, [Enable virtualkeyboard support])
   AC_SUBST(include_virtualkeyboard, ["#define EGT_HAS_VIRTUALKEYBOARD 1"])
fi

AC_ARG_ENABLE([lto],
  [AS_HELP_STRING([--enable-lto], [enable gcc's LTO [default=no]])],
  [enable_lto=$enableval], [enable_lto=no])
if test "x$enable_lto" = "xyes" ; then
  AC_MSG_NOTICE([enabling LTO])

  AC_LANG(C)
  AX_APPEND_COMPILE_FLAGS2([-flto],
	[CFLAGS],[-Werror],,[AC_MSG_ERROR(lto flags not supported)])

  AC_LANG(C++)
  AX_APPEND_COMPILE_FLAGS2([-flto],
	[CXXFLAGS],[-Werror],,[AC_MSG_ERROR(lto flags not supported)])

  AX_APPEND_COMPILE_FLAGS2([-flto],
	[LDFLAGS],[-Werror],,[AC_MSG_ERROR(lto flags not supported)])
fi

# Checks for typedefs, structures, and compiler characteristics.
AC_CHECK_HEADER_STDBOOL
AC_C_INLINE
AC_TYPE_INT32_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T

# Checks for library functions.
AC_FUNC_MMAP
AC_CHECK_FUNCS([floor memmove memset munmap select setlocale sqrt strerror])

AX_PTHREAD([AX_APPEND_FLAG([$PTHREAD_LIBS], [LIBS])
	    AX_APPEND_FLAG([$PTHREAD_CFLAGS], [CFLAGS])
	    AX_APPEND_FLAG([$PTHREAD_CFLAGS], [CXXFLAGS])],
            AC_MSG_ERROR(Can not find pthreads.  This is required.))

AC_ARG_WITH([x11],
    AS_HELP_STRING([--without-x11], [Ignore presence of x11 and disable it]),
    [with_x11=$withval],
    [with_x11=auto])
AS_IF([test "x$with_x11" != "xno"],[
   AX_PKG_CHECK_MODULES2(x11, [], [x11 >= 1.6.3], [have_x11=yes], [have_x11=no])
   if test "x${have_x11}" = xyes; then
      AC_DEFINE(HAVE_X11, 1, [Have x11 support])
      LIBEGT_EXTRA_CXXFLAGS="${x11_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${x11_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_x11" = xyes && test "x${have_x11}" != xyes; then
   AC_MSG_FAILURE([--with-x11 was given, but x11 not found])
fi
AM_CONDITIONAL([HAVE_X11], [test "x${have_x11}" = xyes])

AC_ARG_WITH([xkbcommon],
    AS_HELP_STRING([--without-xkbcommon], [Ignore presence of xkbcommon and disable it]),
    [with_xkbcommon=$withval],
    [with_xkbcommon=auto])
AS_IF([test "x$with_xkbcommon" != "xno"],[
   AX_PKG_CHECK_MODULES2(xkbcommon, [], [xkbcommon], [have_xkbcommon=yes], [have_xkbcommon=no])
   if test "x${have_xkbcommon}" = xyes; then
      AC_DEFINE(HAVE_XKBCOMMON, 1, [Have xkbcommon support])
      LIBEGT_EXTRA_CXXFLAGS="${xkbcommon_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${xkbcommon_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_xkbcommon" = xyes && test "x${have_xkbcommon}" != xyes; then
   AC_MSG_FAILURE([--with-xkbcommon was given, but xkbcommon not found])
fi
AM_CONDITIONAL([HAVE_XKBCOMMON], [test "x${have_xkbcommon}" = xyes])

AX_PKG_CHECK_MODULES2(SDL2, [], [sdl2], [have_sdl2=yes], [have_sdl2=no])
AM_CONDITIONAL([HAVE_SDL2], [test "x${have_sdl2}" = xyes])
if test "x${have_sdl2}" = xyes; then
   AC_DEFINE(HAVE_SDL2, 1, [Have sdl2 support])
   LIBEGT_EXTRA_CXXFLAGS="${SDL2_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
if test "x$egt_os_win32" = "xyes"; then
   SDL2_LIBS=`echo "$SDL2_LIBS" | sed -e 's/-lSDL2main//g'`
fi
   LIBEGT_EXTRA_LDFLAGS="${SDL2_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
fi

AC_ARG_WITH([tslib],
    AS_HELP_STRING([--without-tslib], [Ignore presence of tslib and disable it]),
    [with_tslib=$withval],
    [with_tslib=auto])
AS_IF([test "x$with_tslib" != "xno"],[
   AX_PKG_CHECK_MODULES2(tslib, [], [tslib >= 1.15], [have_tslib=yes], [have_tslib=no])
   if test "x${have_tslib}" = xyes; then
      AC_DEFINE(HAVE_TSLIB, 1, [Have tslib support])
      LIBEGT_EXTRA_CXXFLAGS="${tslib_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${tslib_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_tslib" = xyes && test "x${have_tslib}" != xyes; then
   AC_MSG_FAILURE([--with-tslib was given, but tslib not found])
fi
AM_CONDITIONAL([HAVE_TSLIB], [test "x${have_tslib}" = xyes])

AC_ARG_WITH([libinput],
    AS_HELP_STRING([--without-libinput], [Ignore presence of libinput and disable it]),
    [with_libinput=$withval],
    [with_libinput=auto])
AS_IF([test "x$with_libinput" != "xno"],[
   AX_PKG_CHECK_MODULES2(libinput, [], [libinput >= 1.6.3], [have_libinput=yes], [have_libinput=no])
   if test "x${have_libinput}" = xyes; then
      AC_DEFINE(HAVE_LIBINPUT, 1, [Have libinput support])
      LIBEGT_EXTRA_CXXFLAGS="${libinput_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${libinput_LIBS} -ludev ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_libinput" = xyes && test "x${have_libinput}" != xyes; then
   AC_MSG_FAILURE([--with-libinput was given, but libinput not found])
fi
AM_CONDITIONAL([HAVE_LIBINPUT], [test "x${have_libinput}" = xyes])

AC_ARG_WITH([gstreamer],
    AS_HELP_STRING([--without-gstreamer], [Ignore presence of gstreamer and disable it]),
    [with_gstreamer=$withval],
    [with_gstreamer=auto])
AS_IF([test "x$with_gstreamer" != "xno"],[
   AX_PKG_CHECK_MODULES2(gstreamer, [], [gstreamer-1.0 >= 1.8], [have_gstreamer=yes], [have_gstreamer=no])
   if test "x${have_gstreamer}" = xyes; then
      AX_PKG_CHECK_MODULES2(gstreamer_plugins_base_dev, [], [gstreamer-app-1.0 >= 1.8], [have_gst_pbdev=yes], [have_gst_pbdev=no])
      if test "x${have_gst_pbdev}" = xyes; then
         AC_DEFINE(HAVE_GSTREAMER, 1, [Have gstreamer support])
         LIBEGT_EXTRA_CXXFLAGS="${gstreamer_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
         LIBEGT_EXTRA_LDFLAGS="${gstreamer_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"

         AC_DEFINE(HAVE_GSTREAMER_PBDEV, 1, [Have gstreamer-plugin-base1.0-dev support])
         LIBEGT_EXTRA_CXXFLAGS="${gstreamer_plugins_base_dev_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
         LIBEGT_EXTRA_LDFLAGS="${gstreamer_plugins_base_dev_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
      else
	 have_gstreamer=no
      fi

      AX_PKG_CHECK_MODULES2(gstreamer_pbutils, [], [gstreamer-pbutils-1.0 >= 1.8], [have_gst_pbutils=yes], [have_gst_pbutils=no])
      if test "x${have_gst_pbutils}" = xyes; then
         AC_DEFINE(HAVE_GSTREAMER_PBUTILS, 1, [Have gstreamer pbutils support])
         LIBEGT_EXTRA_CXXFLAGS="${gstreamer_pbutils_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
         LIBEGT_EXTRA_LDFLAGS="${gstreamer_pbutils_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
      fi
   fi
])
if test "x$with_gstreamer" = xyes && test "x${have_gstreamer}" != xyes; then
   AC_MSG_FAILURE([--with-gstreamer was given, but gstreamer & its dependency packages not found])
fi
AM_CONDITIONAL([HAVE_GSTREAMER], [test "x${have_gstreamer}" = xyes])
AM_CONDITIONAL([HAVE_GSTREAMER_PBUTILS], [test "x${have_gst_pbutils}" = xyes])
AM_CONDITIONAL([HAVE_GSTREAMER_PBDEV], [test "x${have_gst_pbdev}" = xyes])

AC_ARG_WITH([lua],
    AS_HELP_STRING([--without-lua], [Ignore presence of lua and disable it]),
    [with_lua=$withval],
    [with_lua=auto])
AS_IF([test "x$with_lua" != "xno"],[
   AX_PKG_CHECK_MODULES2(lua, [], [lua >= 5.3.0], [have_lua=yes], [have_lua=no])
   if test "x${have_lua}" = xno; then
      AX_PKG_CHECK_MODULES2(lua, [], [lua5.3], [have_lua=yes], [have_lua=no])
   fi
   if test "x${have_lua}" = xyes; then
      AC_DEFINE(HAVE_LUA, 1, [Have lua support])
      LIBEGT_EXTRA_CXXFLAGS="${lua_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${lua_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"

      AC_ARG_ENABLE(lua-bindings,
        [AS_HELP_STRING([--enable-lua-bindings],[enable lua bindings [default=no]])],
        [enable_lua_bindings=$enableval], [enable_lua_bindings=no])
      if test "x$enable_lua_bindings" = "xyes";
      then
         AC_PATH_PROG([SWIG_BIN], [swig])
         if test "x${have_lua}" = xyes && test -n "$SWIG_BIN"; then
            have_lua_bindings=yes
            AC_SUBST(include_luaapp, ["#define EGT_HAS_LUA_BINDINGS 1"])
	 else
	    AC_MSG_ERROR([lua bindings requested but swig not found.])
         fi
      fi
   fi
])
if test "x$with_lua" = xyes && test "x${have_lua}" != xyes; then
   AC_MSG_FAILURE([--with-lua was given, but lua not found])
fi
AM_CONDITIONAL([HAVE_LUA], [test "x${have_lua}" = xyes])
AM_CONDITIONAL([ENABLE_LUA_BINDINGS], [test "x${have_lua_bindings}" = xyes])

AC_ARG_WITH([readline],
    AS_HELP_STRING([--without-readline], [Ignore presence of readline and disable it]),
    [with_readline=$withval],
    [with_readline=auto])
AS_IF([test "x$with_readline" != "xno"],[
   AX_PKG_CHECK_MODULES2(readline, [], [readline], [have_readline=yes], [have_readline=no])
   if test "x${have_readline}" = xyes; then
      LIBEGT_EXTRA_CXXFLAGS="-DLUA_USE_READLINE ${readline_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${readline_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_readline" = xyes && test "x${have_readline}" != xyes; then
   AC_MSG_FAILURE([--with-readline was given, but readline not found])
fi

AX_PKG_CHECK_MODULES2(libplanes, [], [libplanes >= 1.1.0], [have_libplanes=yes], [have_libplanes=no])
AM_CONDITIONAL([HAVE_LIBPLANES], [test "x${have_libplanes}" = xyes])
if test "x${have_libplanes}" = xyes; then
   AX_PKG_CHECK_MODULES2(libdrm, [], [libdrm >= 2.4.0], [], [AC_MSG_ERROR([
     libdrm is a hard dependency, but a sufficient version was not found.])])
   AC_DEFINE(HAVE_LIBDRM, 1, [Have libdrm support])
   AC_DEFINE(HAVE_LIBPLANES, 1, [Have libplanes support])
   LIBEGT_EXTRA_CXXFLAGS="${libplanes_CFLAGS} ${libdrm_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
   LIBEGT_EXTRA_LDFLAGS="${libplanes_LIBS} ${libdrm_LDFLAGS} ${LIBEGT_EXTRA_LDFLAGS}"
fi

AX_PKG_CHECK_MODULES2(libm2d, [], [libm2d >= 2.0.0], [have_libm2d=yes], [have_libm2d=no])
AM_CONDITIONAL([HAVE_LIBM2D], [test "x${have_libm2d}" = xyes])
if test "x${have_libm2d}" = xyes; then
    AC_DEFINE(HAVE_LIBM2D, 1, [Have libm2d support])
    LIBEGT_EXTRA_CXXFLAGS="${libm2d_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
    LIBEGT_EXTRA_LDFLAGS="${libm2d_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
fi

AX_PKG_CHECK_MODULES2(cairo, [], [cairo >= 1.14.6], [have_cairo=yes], [AC_MSG_ERROR([
     cairo is a hard dependency, but a sufficient version was not found.])])
AM_CONDITIONAL([HAVE_CAIRO], [test "x${have_cairo}" = xyes])
if test "x${have_cairo}" = xyes; then
  LIBEGT_EXTRA_CXXFLAGS="${cairo_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
  LIBEGT_EXTRA_LDFLAGS="${cairo_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
fi

AC_CHECK_DECL([CAIRO_HAS_FT_FONT], [], [
    AC_MSG_FAILURE([cairo is not compiled with freetype support and it is required.])
   ], [[#include <cairo/cairo-features.h>]])
LIBEGT_PRIVATE_LDFLAGS="-lfreetype ${LIBEGT_PRIVATE_LDFLAGS}"

AC_ARG_WITH([fontconfig],
    AS_HELP_STRING([--without-fontconfig], [Ignore presence of fontconfig and disable it]),
    [with_fontconfig=$withval],
    [with_fontconfig=auto])
AS_IF([test "x$with_fontconfig" != "xno"],[
   # to use fontconfig - cairo has to be compiled with fontconfig
   AC_CHECK_DECL([CAIRO_HAS_FC_FONT], [have_fontconfig=yes], [have_fontconfig=no], [[#include <cairo/cairo-features.h>]])
   if test "x${have_fontconfig}" = xyes; then
      AC_DEFINE(HAVE_FONTCONFIG, 1, [Have fontconfig support])
      LIBEGT_PRIVATE_LDFLAGS="-lfontconfig ${LIBEGT_PRIVATE_LDFLAGS}"
   fi
])
if test "x$with_fontconfig" = xyes && test "x${have_fontconfig}" != xyes; then
   AC_MSG_FAILURE([--with-fontconfig was given, but fontconfig not found])
fi
AM_CONDITIONAL([HAVE_FONTCONFIG], [test "x${have_fontconfig}" = xyes])

AC_CHECK_DECL([CAIRO_HAS_PNG_FUNCTIONS], [have_png=yes], [have_png=no], [[#include <cairo/cairo-features.h>]])

AC_ARG_WITH([plplot],
    AS_HELP_STRING([--without-plplot], [Ignore presence of plplot and disable it]),
    [with_plplot=$withval],
    [with_plplot=auto])
AS_IF([test "x$with_plplot" != "xno"],[
   AX_PKG_CHECK_MODULES2(plplot, [], [plplot-c++], [have_plplot=yes], [have_plplot=no])
   if test "x${have_plplot}" = xno; then
      AX_PKG_CHECK_MODULES2(plplot, [], [plplotd-c++], [have_plplot=yes], [have_plplot=no])
   fi

   if test "x${have_plplot}" = xyes; then
      #check for the extcairo device
      result=
      AC_MSG_CHECKING([for plplot extcairo device])
      ac_save_CFLAGS="$CFLAGS"
      CFLAGS=$plplotcxx_CFLAGS
      AC_LANG_PUSH([C])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
      #include <plplot/plDevs.h>
      ]], [[
      #ifndef PLD_extcairo
      #error
      #endif
      ]])],[
         result=yes
         AC_DEFINE([HAVE_EXTCAIRO], [], [extcairo found])
      ],[result=no])
      AC_MSG_RESULT([$result])
      if test x$result = xno ; then
         AC_MSG_ERROR([plplot must be built with the extcairo device!])
      fi
      AC_LANG_POP
      CFLAGS="$ac_save_CFLAGS"
   fi

   if test "x${have_plplot}" = xyes; then
      AC_DEFINE(HAVE_PLPLOT, 1, [Have plplot support])
      AC_SUBST(include_chart, ["#define EGT_HAS_CHART 1"])
      LIBEGT_EXTRA_CXXFLAGS="${plplot_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${plplot_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_plplot" = xyes && test "x${have_plplot}" != xyes; then
   AC_MSG_FAILURE([--with-plplot was given, but plplot not found])
fi
AM_CONDITIONAL([HAVE_PLPLOT], [test "x${have_plplot}" = xyes])

AC_ARG_WITH([libjpeg],
    AS_HELP_STRING([--without-libjpeg], [Ignore presence of libjpeg and disable it]),
    [with_libjpeg=$withval],
    [with_libjpeg=auto])
AS_IF([test "x$with_libjpeg" != "xno"],[
   AX_PKG_CHECK_MODULES2(libjpeg, [], [libjpeg], [have_libjpeg=yes], [have_libjpeg=no])
   if test "x${have_libjpeg}" = xyes; then
      AC_DEFINE(HAVE_LIBJPEG, 1, [Have libjpeg support])
      LIBEGT_EXTRA_CXXFLAGS="${libjpeg_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${libjpeg_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_libjpeg" = xyes && test "x${have_libjpeg}" != xyes; then
   AC_MSG_FAILURE([--with-libjpeg was given, but libjpeg not found])
fi
AM_CONDITIONAL([HAVE_LIBJPEG], [test "x${have_libjpeg}" = xyes])

AC_ARG_WITH([libcurl],
    AS_HELP_STRING([--without-libcurl], [Ignore presence of libcurl and disable it]),
    [with_libcurl=$withval],
    [with_libcurl=auto])
AS_IF([test "x$with_libcurl" != "xno"],[
   AX_PKG_CHECK_MODULES2(libcurl, [], [libcurl >= 4.5], [have_libcurl=yes], [have_libcurl=no])
   if test "x${have_libcurl}" = xyes; then
      AC_DEFINE(HAVE_LIBCURL, 1, [Have libcurl support])
      AC_SUBST(include_http, ["#define EGT_HAS_HTTP 1"])
      LIBEGT_EXTRA_CXXFLAGS="${libcurl_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${libcurl_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_libcurl" = xyes && test "x${have_libcurl}" != xyes; then
   AC_MSG_FAILURE([--with-libcurl was given, but libcurl not found])
fi
AM_CONDITIONAL([HAVE_LIBCURL], [test "x${have_libcurl}" = xyes])

AC_ARG_WITH([librsvg],
    AS_HELP_STRING([--without-librsvg], [Ignore presence of librsvg and disable it]),
    [with_librsvg=$withval],
    [with_librsvg=auto])
AS_IF([test "x$with_librsvg" != "xno"],[
   AX_PKG_CHECK_MODULES2(librsvg, [], [librsvg-2.0], [have_librsvg=yes], [have_librsvg=no])
   if test "x${have_librsvg}" = xyes; then
      AC_DEFINE(HAVE_LIBRSVG, 1, [Have librsvg support])
      AC_SUBST(include_svg, ["#define EGT_HAS_SVG 1"])
      LIBEGT_EXTRA_CXXFLAGS="${librsvg_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${librsvg_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_librsvg" = xyes && test "x${have_librsvg}" != xyes; then
   AC_MSG_FAILURE([--with-librsvg was given, but librsvg not found])
fi
AM_CONDITIONAL([HAVE_LIBRSVG], [test "x${have_librsvg}" = xyes])

AC_ARG_WITH([zlib],
    AS_HELP_STRING([--without-zlib], [Ignore presence of zlib and disable it]))
AS_IF([test "x$with_zlib" != "xno"],[
   AX_PKG_CHECK_MODULES2(zlib, [], [zlib], [have_zlib=yes], [have_zlib=no])
   if test "x${have_zlib}" = xyes; then
      AC_DEFINE(HAVE_ZLIB, 1, [Have zlib support])
      LIBEGT_EXTRA_CXXFLAGS="${zlib_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${zlib_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
AM_CONDITIONAL([HAVE_ZLIB], [test "x${have_zlib}" = xyes])

AC_ARG_WITH([libmagic],
    AS_HELP_STRING([--without-libmagic], [Ignore presence of libmagic and disable it]))
AS_IF([test "x$with_libmagic" != "xno"],[
   AX_PKG_CHECK_MODULES2(libmagic, [], [libmagic], [have_libmagic=yes], [have_libmagic=no])
   if test "x${have_libmagic}" = xyes; then
      AC_DEFINE(HAVE_LIBMAGIC, 1, [Have libmagic support])
      LIBEGT_EXTRA_CXXFLAGS="${libmagic_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${libmagic_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
   fi
])
if test "x$with_libmagic" = xyes && test "x${have_libmagic}" != xyes; then
   AC_MSG_FAILURE([--with-libmagic was given, but libmagic not found])
fi
AM_CONDITIONAL([HAVE_LIBMAGIC], [test "x${have_libmagic}" = xyes])

if test "x${have_gstreamer}" = xyes; then
   AC_SUBST(include_audio, ["#define EGT_HAS_AUDIO 1"])
   AC_SUBST(include_video, ["#define EGT_HAS_VIDEO 1"])
   AC_SUBST(include_camera, ["#define EGT_HAS_CAMERA 1"])
   AC_SUBST(include_capture, ["#define EGT_HAS_CAPTURE 1"])
fi

AC_CHECK_HEADER([linux/input.h], [have_linux_input_h=yes], [have_linux_input_h=no])
AM_CONDITIONAL([HAVE_LINUX_INPUT_H], [test "x${have_linux_input_h}" = xyes])
if test "x${have_linux_input_h}" = xyes; then
   AC_DEFINE(HAVE_LINUX_INPUT_H, 1, [Have linux/input.h support])
fi

AC_CHECK_HEADER([windows.h], [have_windows_h=yes], [have_windows_h=no])
AM_CONDITIONAL([HAVE_WINDOWS_H], [test "x${have_windows_h}" = xyes])
if test "x${have_windows_h}" = xyes; then
   AC_DEFINE(HAVE_WINDOWS_H, 1, [Have windows_h support])
fi

AC_CHECK_PROG(XXD, xxd, yes)
if test "x${XXD}" != x"yes"; then
   if test "x${enable_examples}" = xyes; then
      AC_MSG_ERROR("Cannot find xxd. This is required.")
   fi
fi

AC_DEFUN([LIBINTL_SRC], [
AC_LANG_PROGRAM([[
#include <libintl.h>
]],[[
char *msg = gettext("test");
]])])

AC_MSG_CHECKING([if libc contains libintl])
AC_LINK_IFELSE([LIBINTL_SRC],
	[AC_MSG_RESULT([yes])
	LIBC_CONTAINS_LIBINTL=Yes],
	[AC_MSG_RESULT([no])
	LIBC_CONTAINS_LIBINTL=])
AC_SUBST([LIBC_CONTAINS_LIBINTL])

AC_CHECK_HEADER([libintl.h],
[NO_GETTEXT=],
[NO_GETTEXT=Yes])
AC_SUBST([NO_GETTEXT])

if test -z "$NO_GETTEXT"; then
    if test -z "$LIBC_CONTAINS_LIBINTL"; then
       AC_SEARCH_LIBS([gettext], [intl], [LIBS="$LIBS -lintl" have_libintl=yes], [have_libintl=no])
    else
       have_libintl=yes
    fi
fi
AM_CONDITIONAL([HAVE_LIBINTL], [test "x${have_libintl}" = xyes])
if test "x${have_libintl}" = xyes; then
    AC_DEFINE(HAVE_LIBINTL, 1, [Have libintl support])
fi

AC_CHECK_PROG(MSGFMT, msgfmt, yes)
if test "x${MSGFMT}" != x"yes"; then
   if test "x${enable_examples}" = xyes; then
      AC_MSG_WARN("Missing msgfmt: install gettext")
   fi
fi
AM_CONDITIONAL([HAVE_MSGFMT], [test "x${MSGFMT}" = xyes])

AC_ARG_WITH([soundeffect],
    AS_HELP_STRING([--without-soundeffect], [Ignore presence of alsa and sndfile, and disable soundeffect]),
    [with_soundeffect=$withval],
    [with_soundeffect=auto])
AS_IF([test "x$with_soundeffect" != "xno"],[
   AX_PKG_CHECK_MODULES2(alsa, [], [alsa], [have_alsa=yes], [have_alsa=no])
   AX_PKG_CHECK_MODULES2(sndfile, [], [sndfile], [have_sndfile=yes], [have_sndfile=no])
   if test "x${have_alsa}" = xyes && test "x${have_sndfile}"; then
      have_soundeffect=yes;
      LIBEGT_EXTRA_CXXFLAGS="${alsa_CFLAGS} ${sndfile_CFLAGS} ${LIBEGT_EXTRA_CXXFLAGS}"
      LIBEGT_EXTRA_LDFLAGS="${alsa_LIBS} ${sndfile_LIBS} ${LIBEGT_EXTRA_LDFLAGS}"
      AC_SUBST(include_soundeffect, ["#define EGT_HAS_SOUNDEFFECT 1"])
   fi
])
if test "x$with_soundeffect" = xyes && test "x${have_alsa}" != xyes; then
   AC_MSG_FAILURE([--with-soundeffect was given, but alsa not found or disabled])
fi
if test "x$with_soundeffect" = xyes && test "x${have_sndfile}" != xyes; then
   AC_MSG_FAILURE([--with-soundeffect was given, but alsa not found or disabled])
fi
AM_CONDITIONAL([HAVE_SOUNDEFFECT], [test "x${have_soundeffect}" = xyes])

LIBEGT_EXTRA_LDFLAGS="${LIBEGT_PRIVATE_LDFLAGS} ${LIBEGT_EXTRA_LDFLAGS}"

# Subst LIBEGT_EXTRA_CFLAGS & CXXFLAGS & LDFLAGS
AC_SUBST(LIBEGT_EXTRA_CFLAGS)
AC_SUBST(LIBEGT_EXTRA_CXXFLAGS)
AC_SUBST(LIBEGT_EXTRA_LDFLAGS)

# Libs.private section of libegt.pc
libs_private="$LDFLAGS $LIBEGT_PRIVATE_LDFLAGS"
AC_SUBST(libs_private)

AC_USE_SYSTEM_EXTENSIONS
AC_SYS_LARGEFILE
AC_FUNC_ALLOCA

AC_PATH_PROG([ASTYLE_BIN], [astyle])
AM_CONDITIONAL([HAVE_ASTYLE_BIN], [test -n "$ASTYLE_BIN"])

AC_PATH_PROG([CLOC_BIN], [cloc])
AM_CONDITIONAL([HAVE_CLOC_BIN], [test -n "$CLOC_BIN"])

AC_PATH_PROG([CPPCHECK_BIN], [cppcheck])
AM_CONDITIONAL([HAVE_CPPCHECK_BIN], [test -n "$CPPCHECK_BIN"])

AC_PATH_PROG([DOXYGEN_BIN], [doxygen])
AM_CONDITIONAL([HAVE_DOXYGEN_BIN], [test -n "$DOXYGEN_BIN"])
AM_COND_IF([HAVE_DOXYGEN_BIN], [AC_CONFIG_FILES([docs/Doxyfile docs/Info.plist])])

AC_PATH_PROG([ASPELL_BIN], [aspell])
AM_CONDITIONAL([HAVE_ASPELL_BIN], [test -n "$ASPELL_BIN"])

AC_PATH_PROGS([CLANG_TIDY_BIN], [clang-tidy-9 clang-tidy-6.0 clang-tidy])
AM_CONDITIONAL([HAVE_CLANG_TIDY_BIN], [test -n "$CLANG_TIDY_BIN"])

AC_ARG_ENABLE([simd],
  [AS_HELP_STRING([--enable-simd], [build with simd support [default=no]])],
  [enable_simd=$enableval], [enable_simd=no])
if test "x$enable_simd" = "xyes";
then
  AC_CHECK_PROG(have_cmake, cmake, yes, no)
  if test $have_cmake == "no"
  then
    AC_MSG_ERROR(cmake was not found on this system and is needed for simd)
  fi

  AC_MSG_NOTICE([configuring simd])
  (
    SIMD_CXX=`echo "$CXX" | cut -d ' ' -f 1`
    SIMD_CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/-W[-0-9a-z=]*//g'`
    # if -Wno-psabi was there, add it back
    SIMD_CXXFLAGS+=`echo "$CXXFLAGS" | grep -o '\-Wno-psabi'`
    SIMD_CXXFLAGS=`echo "$SIMD_CXXFLAGS" | sed -e 's/-pedantic//g'`
    SIMD_CXXFLAGS=`echo "$SIMD_CXXFLAGS" | sed -e 's/-flto//g'`

    mkdir -p external/Simd/prj/cmake/ &&
    cd external/Simd/prj/cmake/ &&
    cmake ../../../../${srcdir}/external/Simd/prj/cmake/ -Wno-dev -DTOOLCHAIN="$SIMD_CXX" -DTARGET="$host_cpu" \
	  -DCMAKE_BUILD_TYPE="Release" -DLIBRARY="STATIC" \
	  -DSIMD_TEST=off -DCMAKE_CXX_FLAGS="${SIMD_CXXFLAGS} -DCHECK_VERSION=0"
  )

  AC_DEFINE(HAVE_SIMD, 1, [Have simd support])
fi
AM_CONDITIONAL([HAVE_SIMD], [test "x${enable_simd}" = xyes])

AC_ARG_ENABLE([snippets],
  [AS_HELP_STRING([--enable-snippets], [build snippets examples [default=no]])],
  [enable_snippets=$enableval], [enable_snippets=no])
AM_CONDITIONAL([ENABLE_SNIPPETS], [test "x${enable_snippets}" = xyes])

AC_ARG_ENABLE([unittests],
  [AS_HELP_STRING([--enable-unittests], [build unit tests [default=no]])],
  [enable_unittests=$enableval], [enable_unittests=no])
AM_CONDITIONAL([ENABLE_UNITTESTS], [test "x${enable_unittests}" = xyes])

AC_ARG_ENABLE([svgdeserial],
  [AS_HELP_STRING([--enable-svgdeserial], [build svgdeserial functionality [default=no]])],
  [enable_svgdeserial=$enableval], [enable_svgdeserial=no])
AM_CONDITIONAL([ENABLE_SVGDESERIAL], [test "x${enable_svgdeserial}" = xyes])
if test "x${enable_svgdeserial}" = xyes; then
   AC_SUBST(include_svgdeserial, ["#define EGT_HAS_SVGDESERIAL 1"])
fi

AC_CONFIG_FILES([Makefile
	src/Makefile
	external/Makefile
	examples/Makefile
	scripts/Makefile
	libegt.pc
	include/egt/ui
	include/egt/version.h
	examples/i18n/Makefile
	examples/resource/Makefile
	examples/snippets/Makefile
	examples/video/Makefile
	docs/Makefile
	test/Makefile
	lua/Makefile])
AC_OUTPUT

# report how we have been configured
echo
echo "Configured EGT ${PACKAGE_VERSION} for \`${host}'"
echo
echo "Compile:"
echo "  Debug                  ${enable_debug:-yes}"
echo "  Coverage               ${ac_cv_c_gcc_ftest_coverage:-no}"
echo "  Profile                ${ac_cv_c_gcc_pg:-no}"
echo "  LTO                    ${enable_lto:-no}"
echo "  SIMD                   ${enable_simd:-no}"
echo "  Examples               ${enable_examples}"
echo "  CXXFLAGS               ${CXXFLAGS}"
echo "  CFLAGS                 ${CFLAGS}"
echo "  LDFLAGS                ${LDFLAGS}"
echo

echo "Display:"
echo "  DRM/KMS                ${have_libplanes:-no}"
echo "  M2D                    ${have_libm2d:-no}"
echo "  X11                    ${have_x11:-no}"
echo "  SDL2                   ${have_sdl2:-no}"
echo

echo "Input:"
echo "  libinput               ${have_libinput:-no}"
echo "  tslib                  ${have_tslib:-no}"
echo "  evdev                  ${have_linux_input_h:-no}"
echo "  X11                    ${have_x11:-no}"
echo "  xkbcommon              ${have_xkbcommon:-no}"
echo

echo "Media:"
echo "  gstreamer              ${have_gstreamer:-no}"
echo "  SVG                    ${have_librsvg:-no}"
echo "  JPEG                   ${have_libjpeg:-no}"
echo "  PNG                    ${have_png:-no}"
echo "  soundeffect            ${have_soundeffect:-no}"
echo

echo "Features:"
echo "  Networking             ${have_libcurl:-no}"
echo "  libmagic               ${have_libmagic:-no}"
echo "  LUA Interpreter        ${have_lua:-no}"
echo "  LUA Bindings           ${have_lua_bindings:-no}"
echo "  plplot                 ${have_plplot:-no}"
echo "  Fontconfig             ${have_fontconfig:-no}"
echo "  libintl                ${have_libintl:-no}"

echo