path: root/configure.ac

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

AC_PREREQ(2.60)
m4_define(sdl_freetype_version_major, 0)
m4_define(sdl_freetype_version_minor, 0)
m4_define(sdl_freetype_version_micro, 3)
AC_INIT(sdl-freetype, 0.0.3, sunmoon1997@gmail.com)
AC_CONFIG_SRCDIR([src/sdl-freetype.h])
AC_CONFIG_HEADER([config.h])

AM_INIT_AUTOMAKE([1.7])

lt_current=0
lt_revision=0
lt_age=0

VERSION_INFO="$lt_current:$lt_revision:$lt_age"
AC_SUBST(VERSION_INFO)

LT_CURRENT_MINUS_AGE=`expr $lt_current - $lt_age`
AC_SUBST(LT_CURRENT_MINUS_AGE)

SDL_FREETYPE_VERSION_MAJOR=sdl_freetype_version_major()
SDL_FREETYPE_VERSION_MINOR=sdl_freetype_version_minor()
SDL_FREETYPE_VERSION_MICRO=sdl_freetype_version_micro()
AC_SUBST(SDL_FREETYPE_VERSION_MAJOR)
AC_SUBST(SDL_FREETYPE_VERSION_MINOR)
AC_SUBST(SDL_FREETYPE_VERSION_MICRO)
AC_DEFINE_UNQUOTED(SDL_FREETYPE_VERSION_MAJOR,$SDL_FREETYPE_VERSION_MAJOR,
                   [sdl-freetype major version number])
AC_DEFINE_UNQUOTED(SDL_FREETYPE_VERSION_MINOR,$SDL_FREETYPE_VERSION_MINOR,
                   [sdl-freetype minor version number])
AC_DEFINE_UNQUOTED(SDL_FREETYPE_VERSION_MICRO,$SDL_FREETYPE_VERSION_MICRO,
                   [sdl-freetype micro version number])

# AM_MAINTAINER_MODE
# Checks for programs.
AC_STDC_HEADERS
AC_PROG_CXX
AC_PROG_CC
AC_PROG_LIBTOOL
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_RANLIB

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_BIGENDIAN
AX_C_FLOAT_WORDS_BIGENDIAN
AC_CHECK_HEADERS([stdint.h inttypes.h sys/int_types.h])
AC_TYPE_OFF_T
AC_TYPE_INT8_T
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_CHECK_TYPES([uint64_t])
AC_CHECK_FUNCS([floor, memset, strdup])
AC_FUNC_MALLOC

AC_CHECK_LIBM
AC_SUBST(LIBM)

LIBS="$LIBS $LIBM"

# check if os is win32.
AC_MSG_CHECKING([for Win32])
case "$host" in
  *-*-mingw*)
    native_win32=yes
    ;;
  *)
    native_win32=no
    LIBM="-lm"
    ;;
esac
AC_MSG_RESULT([$native_win32])
AM_CONDITIONAL(OS_WIN32, [test $native_win32 = yes])

SDL_FREETYPE_REQUIRES=""
SDL_FT_REQUIRES="sdl-freetype"
# Checks for freetype
PKGCONFIG_REQUIRED=0.19
PKG_PROG_PKG_CONFIG($PKGCONFIG_REQUIRED)
if test "x$PKG_CONFIG" = x; then
	AC_MSG_ERROR([pkg-config >= $PKGCONFIG_REQUIRED required but not found (http://pkgconfig.freedesktop.org/)])
fi
case `$PKG_CONFIG --version` in
[0.?|0.?.?|0.1[0-7]|0.1[0-7].?]) PKGCONFIG_REQUIRES="Requires"; ;;
*) PKGCONFIG_REQUIRES="Requires.private"; ;;
esac

AC_SUBST(PKGCONFIG_REQUIRES)

# release number - for information only
FREETYPE_MIN_RELEASE=2.1.0
# libtool-specific version - this is what is checked
FREETYPE_MIN_VERSION=8.0.2

PKG_CHECK_MODULES(FREETYPE, freetype2 >= $FREETYPE_MIN_VERSION,
                  [freetype_pkgconfig=yes], [freetype_pkgconfig=no])
  
if test "x$freetype_pkgconfig" = "xyes"; then
    SDL_FREETYPE_REQUIRES="freetype2 >= $FREETYPE_MIN_VERSION $SDL_FREETYPE_REQUIRES"
else
    if test -z "$FREETYPE_CONFIG"; then
        AC_PATH_PROG(FREETYPE_CONFIG, freetype-config, no)
    fi
    if test "x$FREETYPE_CONFIG" = "xno" ; then
        AC_MSG_ERROR(no (freetype-config not found in path or $FREETYPE_CONFIG))
    else
        AC_MSG_CHECKING(freetype2 libtool version)

        FREETYPE_VERSION=`$FREETYPE_CONFIG --version`
        VERSION_DEC=`echo $FREETYPE_VERSION | awk -F. '{printf("%d\n", 10000*$1 + 100*$2 + $3)};'`
        MIN_VERSION_DEC=`echo $FREETYPE_MIN_VERSION | awk -F. '{printf("%d\n", 10000*$1 + 100*$2 + $3)};'`
        if test $VERSION_DEC -lt $MIN_VERSION_DEC; then
            AC_MSG_ERROR($FREETYPE_VERSION - Too old)
        else
            AC_MSG_RESULT($FREETYPE_VERSION - OK)

	    FREETYPE_CFLAGS=`$FREETYPE_CONFIG --cflags`
	    FREETPE_LIBS=`$FREETYPE_CONFIG --libs`
        fi
    fi
fi
CFLAGS="$FREETYPE_CFLAGS"
LIBS="$FREETYPE_LIBS"

AC_CHECK_MEMBER(FT_Bitmap_Size.y_ppem,
                HAVE_FT_BITMAP_SIZE_Y_PPEM=1,
                HAVE_FT_BITMAP_SIZE_Y_PPEM=0,
                [#include <ft2build.h>
                 #include FT_FREETYPE_H])
AC_DEFINE_UNQUOTED(HAVE_FT_BITMAP_SIZE_Y_PPEM,$HAVE_FT_BITMAP_SIZE_Y_PPEM,
                   [FT_Bitmap_Size structure includes y_ppem field])

AC_CHECK_FUNCS(FT_GlyphSlot_Embolden FT_Library_SetLcdFilter)

dnl Check for SDL
SDL_VERSION=1.2.4
AM_PATH_SDL($SDL_VERSION,
            [have_sdl=yes
	     AC_DEFINE_UNQUOTED(HAVE_SDL, 1, [defined if you have sdl])],
	    [AC_MSG_WARN([*** SDL version $SDL_VERSION not found!])
	     have_sdl=no ])
AM_CONDITIONAL(HAVE_SDL, test "x$have_sdl" = "xyes")
CFLAGS="$CFLAGS $SDL_CFLAGS"
LIBS="$LIBS $SDL_LIBS"

enable_fontconfig=auto
AC_ARG_ENABLE(fontconfig,
  AS_HELP_STRING([--enable-fontconfig],
		 [build sdl-ft (fontconfig must be installed)]),
                 [enable_fontconfig=$enableval], [enable_fontconfig=no])

if test "x$enable_fontconfig" != "xno"; then
  PKG_CHECK_MODULES(FONTCONFIG, fontconfig,
		    [have_fontconfig=yes],
		    [have_fontconfig=no])
fi

AM_CONDITIONAL(HAVE_FONTCONFIG, test "x$have_fontconfig" = "xyes")
SDL_FT_REQUIRES="fontconfig $SDL_FT_REQUIRES"

SDL_FREETYPE_OPENGL_REQUIRES="sdl-freetype"
enable_opengl=auto
AC_ARG_ENABLE(opengl,
  AS_HELP_STRING([--enable-opengl],
		 [build sdl-freetype-opengl (openl must be available)]),
                 [enable_opengl=$enableval], [enable_opengl=no])

if test "x$enable_opengl" != "xno"; then
  AX_CHECK_GL
fi
AM_CONDITIONAL(HAVE_OPENGL, [test "x$no_gl" != x"yes" ])

SDL_FREETYPE_OPENGLES_REQUIRES="sdl-freetype"
enable_opengles=auto
have_opengles=no
AC_ARG_ENABLE(opengles,
  AS_HELP_STRING([--enable-opengles],
		 [build sdl-freetype-opengles (opengles must be available)]),
                 [enable_opengles=$enableval], [enable_opengles=no])

if test "x$enable_opengles" != "xno"; then
  AC_CHECK_HEADERS([EGL/egl.h GLES/gl.h])

  save_LIBS="$LIBS"
  other_egl_LIBS=""
  LIBS="$other_egl_LIBS $LIBS"
  for egl_lib in EGL egl13 egl12 egl11 egl; do
      AC_CHECK_LIB($egl_lib, eglGetError, EGL_LIBS="-l$egl_lib")
  done

  LIBS="$EGL_LIBS $LIBS"
  for gles1_lib in GLES_CM GLESv1_CM; do
      AC_CHECK_LIB($gles1_lib, glGenTextures,
      	 [GLES_LIBS="-l$gles1_lib"
	  have_opengles=yes])
  done

  LIBS="$save_LIBS"
fi
AM_CONDITIONAL(HAVE_OPENGLES, [test "x$have_opengles" == x"yes" ])
AC_SUBST(EGL_LIBS)
AC_SUBST(GLES_LIBS)

AC_SUBST(SDL_FREETYPE_REQUIRES)
AC_SUBST(SDL_FREETYPE_OPENGL_REQUIRES)
AC_SUBST(SDL_FREETYPE_OPENGLES_REQUIRES)
AC_SUBST(SDL_FT_REQUIRES)


AC_DEFUN([SDL_FREETYPE_CC_TRY_FLAG], [
  AC_MSG_CHECKING([whether $CC supports $1])

  sdl_freetype_save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS $1"

  AC_COMPILE_IFELSE([ ], [sdl_freetype_cc_flag=yes], [sdl_freetype_cc_flag=no])
  CFLAGS="$sdl_freetype_save_CFLAGS"

  if test "x$sdl_freetype_cc_flag" = "xyes"; then
    ifelse([$2], , :, [$2])
  else
    ifelse([$3], , :, [$3])
  fi
  AC_MSG_RESULT([$sdl_freetype_cc_flag])
])

dnl Use lots of warning flags with with gcc and compatible compilers
dnl Note: if you change the following variable, the cache is automatically
dnl skipped and all flags rechecked.  So there's no need to do anything
dnl else.  If for any reason you need to force a recheck, just change
dnl MAYBE_WARN in an ignorable way (like adding whitespace)

MAYBE_WARN="-Wall -Wextra \
-Wsign-compare -Werror-implicit-function-declaration \
-Wpointer-arith -Wwrite-strings -Wstrict-prototypes \
-Wmissing-prototypes -Wmissing-declarations -Wnested-externs \
-Wpacked -Wswitch-enum -Wmissing-format-attribute \
-Wstrict-aliasing=2 -Winit-self -Wunsafe-loop-optimizations \
-Wdeclaration-after-statement -Wold-style-definition \
-Wno-missing-field-initializers -Wno-unused-parameter"


# invalidate cached value if MAYBE_WARN has changed
if test "x$sdl_freetype_cv_warn_maybe" != "x$MAYBE_WARN"; then
	unset sdl_freetype_cv_warn_cflags
fi
AC_CACHE_CHECK([for supported warning flags], sdl_freetype_cv_warn_cflags, [
	echo
	WARN_CFLAGS=""

	# Some warning options are not supported by all versions of
	# gcc, so test all desired options against the current
	# compiler.
	#
	# Note that there are some order dependencies
	# here. Specifically, an option that disables a warning will
	# have no net effect if a later option then enables that
	# warnings, (perhaps implicitly). So we put some grouped
	# options (-Wall and -Wextra) up front and the -Wno options
	# last.

	for W in $MAYBE_WARN; do
		SDL_FREETYPE_CC_TRY_FLAG([$W], [WARN_CFLAGS="$WARN_CFLAGS $W"])
	done

	sdl_freetype_cv_warn_cflags=$WARN_CFLAGS
	sdl_freetype_cv_warn_maybe=$MAYBE_WARN

	AC_MSG_CHECKING([which warning flags were supported])])
WARN_CFLAGS=$sdl_freetype_cv_warn_cflags
AC_SUBST(WARN_CFLAGS)

AC_OUTPUT([Makefile
           src/Makefile
           src/sdl-freetype.pc
           src/sdl-freetype-opengl.pc
           src/sdl-freetype-opengles.pc
           src/sdl-ft.pc])