kc3-lang/SDL/visualtest/configure.in

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• Hash : 0e45984f
  Author :
  Date : 2015-06-21T17:33:46
  

  Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().

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• visualtest/configure.in

• dnl Process this file with autoconf to produce a configure script.
  AC_INIT([sdlvisualtest], [0.01], [apoorvupreti@gmail.com])
  
  dnl Detect the canonical build and host environments
  AC_CONFIG_AUX_DIRS($srcdir/../build-scripts)
  AC_CANONICAL_HOST
  
  dnl Check for tools
  
  AC_PROG_CC
  
  dnl Check for compiler environment
  
  AC_C_CONST
  
  dnl We only care about this for building testnative at the moment, so these
  dnl  values shouldn't be considered absolute truth.
  dnl  (Haiku, for example, sets none of these.)
  ISUNIX="false"
  ISWINDOWS="false"
  ISMACOSX="false"
  
  dnl Figure out which math or extra library to use
  case "$host" in
      *-*-cygwin* | *-*-mingw32*)
          ISWINDOWS="true"
          EXE=".exe"
          MATHLIB=""
          EXTRALIB="-lshlwapi"
          SYS_GL_LIBS="-lopengl32"
          ;;
      *-*-haiku*)
          EXE=""
          MATHLIB=""
          EXTRALIB=""
          SYS_GL_LIBS="-lGL"
          ;;
      *-*-darwin* )
          ISMACOSX="true"
          EXE=""
          MATHLIB=""
          EXTRALIB=""
  
          ;;
      *-*-aix*)
          ISUNIX="true"
          EXE=""
          if test x$ac_cv_prog_gcc = xyes; then
              CFLAGS="-mthreads"
          fi
          MATHLIB=""
          EXTRALIB=""
          SYS_GL_LIBS=""
          ;;
      *-*-mint*)
          EXE=""
          MATHLIB=""
          EXTRALIB=""
          AC_PATH_PROG(OSMESA_CONFIG, osmesa-config, no)
          if test "x$OSMESA_CONFIG" = "xyes"; then
              OSMESA_CFLAGS=`$OSMESA_CONFIG --cflags`
              OSMESA_LIBS=`$OSMESA_CONFIG --libs`
              CFLAGS="$CFLAGS $OSMESA_CFLAGS"
              SYS_GL_LIBS="$OSMESA_LIBS"
          else
              SYS_GL_LIBS="-lOSMesa"
          fi
          ;;
      *-*-qnx*)
          EXE=""
          MATHLIB=""
          EXTRALIB=""
          SYS_GL_LIBS="-lGLES_CM"
          ;;
      *)
          dnl Oh well, call it Unix...
          ISUNIX="true"
          EXE=""
          MATHLIB="-lm"
          EXTRALIB=""
          SYS_GL_LIBS="-lGL"
          ;;
  esac
  AC_SUBST(EXE)
  AC_SUBST(MATHLIB)
  AC_SUBST(EXTRALIB)
  AC_SUBST(ISMACOSX)
  AC_SUBST(ISWINDOWS)
  AC_SUBST(ISUNIX)
  
  dnl Check for SDL
  SDL_VERSION=2.0.0
  AM_PATH_SDL2($SDL_VERSION,
              :,
  	    AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
  )
  CFLAGS="$CFLAGS $SDL_CFLAGS"
  LIBS="$LIBS -lSDL2_test $SDL_LIBS $EXTRALIB"
  
  dnl Check for X11 path, needed for OpenGL on some systems
  AC_PATH_X
  if test x$have_x = xyes; then
      if test x$ac_x_includes = xno || test x$ac_x_includes = x; then
          :
      else
          CFLAGS="$CFLAGS -I$ac_x_includes"
      fi
      if test x$ac_x_libraries = xno || test x$ac_x_libraries = x; then
          :
      else
          XPATH="-L$ac_x_libraries"
      fi
  fi
  
  dnl Check for OpenGL
  AC_MSG_CHECKING(for OpenGL support)
  have_opengl=no
  AC_TRY_COMPILE([
   #include "SDL_opengl.h"
  ],[
  ],[
  have_opengl=yes
  ])
  AC_MSG_RESULT($have_opengl)
  
  dnl Check for OpenGL ES
  AC_MSG_CHECKING(for OpenGL ES support)
  have_opengles=no
  AC_TRY_COMPILE([
   #if defined (__IPHONEOS__)
      #include <OpenGLES/ES1/gl.h>
   #else
      #include <GLES/gl.h>
   #endif /* __QNXNTO__ */
  ],[
  ],[
  have_opengles=yes
  ])
  AC_MSG_RESULT($have_opengles)
  
  GLLIB=""
  if test x$have_opengles = xyes; then
      CFLAGS="$CFLAGS -DHAVE_OPENGLES"
      GLLIB="$XPATH -lGLESv1_CM"
  elif test x$have_opengl = xyes; then
      CFLAGS="$CFLAGS -DHAVE_OPENGL"
      GLLIB="$XPATH $SYS_GL_LIBS"
  else
      GLLIB=""
  fi
  
  AC_SUBST(GLLIB)
  
  dnl Check for SDL_ttf
  AC_CHECK_LIB(SDL2_ttf, TTF_Init, have_SDL_ttf=yes)
  if test x$have_SDL_ttf = xyes; then
      CFLAGS="$CFLAGS -DHAVE_SDL_TTF"
      SDL_TTF_LIB="-lSDL2_ttf"
  fi
  AC_SUBST(SDL_TTF_LIB)
  
  dnl Finally create all the generated files
  dnl AC_OUTPUT([Makefile])
  AC_CONFIG_HEADERS([config.h])
  AC_CONFIG_FILES([Makefile])
  AC_OUTPUT()
  

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