config.m4

dnl config.m4 for extension opengl

PHP_ARG_WITH(opengl, for opengl support,
[  --with-opengl=DIR       Include OpenGL support])

PHP_ARG_ENABLE(opengl-debug, whether to enable PHP-OpenGL debug support,
[  --enable-opengl-debug     Enable OpenGL debug support], no, no)

CFLAGS="$CFLAGS -Wall -Wfatal-errors"

if test "$PHP_OPENGL" != "no"; then

  if test -r $PHP_OPENGL/include/GL/gl.h; then
    OPENGL_DIR=$PHP_OPENGL
  else
    AC_MSG_CHECKING(for OpenGL development files in default path)
    for i in /usr/X11R6 /usr/local /usr /System/Library/Frameworks/OpenGL.framework/Headers; do
      if test -r $i/include/GL/gl.h ; then
        OPENGL_DIR=$i
        AC_MSG_RESULT(found in $i)
      fi
      if test -r $i/gl.h ; then
        OPENGL_DIR=$i
        AC_MSG_RESULT(found in $i)
      fi

    done
  fi

  if test -z "$OPENGL_DIR"; then
    AC_MSG_RESULT(not found)
    AC_MSG_ERROR(Please make sure OpenGL is properly installed - gl.h should be in <opengl-dir>/include/GL/)
  fi

  saved_LIBS="$LIBS"

  failed=yes
  for additional_libs in "" -lm; do
    if test ! -z "$additional_libs"; then
      AC_MSG_RESULT(with additional library $additional_libs)
    fi
    AC_MSG_CHECKING(if  OpenGL links properly)
    case $build_os in
    darwin*)
    LIBS="$saved_LIBS -Framework GL $additional_libs"
    ;;
    *)
    LIBS="$saved_LIBS -lGL $additional_libs"
    ;;
    esac
    AC_TRY_LINK( ,[char glBegin(); glBegin(); ], have_GL=yes, have_GL=no)
    AC_MSG_RESULT($have_GL)

    if test "$have_GL" = "no"; then
      AC_MSG_CHECKING(if  MesaGL links properly)
      LIBS="$saved_LIBS -lMesaGL $additional_libs"
      AC_TRY_LINK( ,[char glBegin(); glBegin(); ], have_MesaGL=yes, have_MesaGL=no)
      AC_MSG_RESULT($have_MesaGL)
  
      if test "$have_MesaGL" = "no"; then
        AC_MSG_CHECKING(if  MesaGL with pthreads links properly)
        LIBS="$saved_LIBS -L$OPENGL_DIR/lib -lMesaGL -lpthread $additional_libs"
        AC_TRY_LINK( ,[char glBegin(); glBegin(); ], have_MesaGL_pthreads=yes, have_MesaGL_pthreads=no)
        AC_MSG_RESULT($have_MesaGL_pthreads)
  
        if test "$have_MesaGL_pthreads" != "no"; then
          LIBS="$saved_LIBS"
          PHP_ADD_LIBRARY_WITH_PATH(pthread, $OPENGL_DIR/lib, OPENGL_SHARED_LIBADD)
          PHP_ADD_LIBRARY_WITH_PATH(MesaGL, $OPENGL_DIR/lib, OPENGL_SHARED_LIBADD)
          failed=no
        fi
      else
        LIBS="$saved_LIBS"
        PHP_ADD_LIBRARY_WITH_PATH(MesaGL, $OPENGL_DIR/lib, OPENGL_SHARED_LIBADD)
        failed=no
      fi
    else
      LIBS="$saved_LIBS"
      failed=no
    fi
    if test "$failed" = "no"; then
      if test ! -z "$additional_libs"; then
        PHP_EVAL_LIBLINE($additional_libs, OPENGL_SHARED_LIBADD)
      fi
      break
    fi
  done
  if test "$failed" = "yeso"; then
    AC_MSG_ERROR(Can't find OpenGL nor MesaGL)
  fi
  unset additional_libs

  dnl {{{ --enable-opengl-debug
  if test "$PHP_OPENGL_DEBUG" != "no"; then
    CFLAGS="$CFLAGS -Wall -Wpedantic -g -ggdb -O0"
  fi
  dnl }}}

    case $build_os in
    darwin*)
	PHP_ADD_FRAMEWORK(GL)
	PHP_ADD_INCLUDE(/System/Library/Frameworks/OpenGL.framework/Headers)
    ;;
    *)
	PHP_ADD_LIBRARY_WITH_PATH(GL, /usr/$PHP_LIBDIR, OPENGL_SHARED_LIBADD)
    ;;
    esac

  PHP_ADD_INCLUDE($OPENGL_DIR/include)

  PHP_NEW_EXTENSION(opengl, php_convert.c php_opengl.c, $ext_shared)
  PHP_SUBST(OPENGL_SHARED_LIBADD)
  PHP_ADD_EXTENSION_DEP(opengl, sdl)
  
fi