configure.in

   1 dnl Process this file with autoconf to produce a configure script.
   2 dnl configure.in for HHeretic
   3 AC_REVISION([configure.in 1.00])
   4 AC_INIT(base/am_map.c)
   5 AC_CONFIG_HEADER(include/config.h)
   6
   7 dnl **** Command-line arguments ****
   8
   9 dnl Default values
  10 GLHEXEN="false"
  11 GLLIBS=""
  12 BASELIBS=""
  13 LIBS="-L/usr/X11R6/lib"
  14 HAVEGL="no"
  15 BUILDNAMES=""
  16
  17 AC_ARG_ENABLE(gl,
  18 [  --enable-gl                  Enable OpenGL mode],
  19 [GLHEXEN="true";SDL_VERSION="1.1.2"; AC_DEFINE(RENDER3D)],
  20 [SDL_VERSION="1.1.0"])
  21
  22 AC_SUBST(GLHEXEN)
  23 AC_SUBST(SVGALIBS)
  24
  25 AC_DEFINE(_REENTRANT)
  26 AC_DEFINE(NORANGECHECKING)
  27
  28 dnl **** Check for some programs ****
  29
  30 AC_PROG_CC
  31 AC_PROG_CPP
  32
  33 dnl **** Check for some libraries ****
  34
  35 dnl Check for pthread
  36 AC_CHECK_LIB(pthread, pthread_join, [BASELIBS="-lpthread"])
  37
  38 AC_SUBST(BASELIBS)
  39
  40 dnl Check for SDL
  41 AM_PATH_SDL($SDL_VERSION,
  42         [HAVESDL="yes";GLBASE="sdl/i_sdlgl.o";BUILDNAMES="sdl $BUILDNAMES"],
  43         [HAVESDL="no"]
  44 )
  45
  46 AC_SUBST(GLLIBS)
  47 AC_SUBST(SDL_OGL)
  48 AC_SUBST(HAVESDL)
  49 AC_SUBST(GLBASE)
  50
  51 AC_CHECK_LIB(dl, dlopen)
  52 AC_CHECK_LIB(m, sqrt)
  53
  54 dnl Check for GL libraries
  55
  56 if test "$GLHEXEN" = "true"
  57 then
  58     AC_CHECK_LIB(GL, glBindTexture,[LIBS="$LIBS -lGL";]
  59       AC_CHECK_LIB(GLU, gluOrtho2D, [HAVEGL="yes"],
  60         AC_CHECK_LIB(MesaGL, glBindTexture,[LIBS="$LIBS -lMesaGL";]
  61           AC_CHECK_LIB(MesaGLU, gluOrtho2D, [HAVEGL="yes"], HAVEGL="no"),
  62           HAVEGL="no")
  63         ),
  64         AC_CHECK_LIB(MesaGL, glBindTexture,[LIBS="$LIBS -lMesaGL";]
  65           AC_CHECK_LIB(MesaGLU, gluOrtho2D, [HAVEGL="yes"], HAVEGL="no"),
  66         HAVEGL="no")
  67     )
  68 fi
  69
  70 dnl **** Check for gcc strength-reduce bug ****
  71
  72 if test "x${GCC}" = "xyes"
  73 then
  74   CFLAGS="$CFLAGS -Wall"
  75   AC_CACHE_CHECK( "for gcc strength-reduce bug", ac_cv_c_gcc_strength_bug,
  76                   AC_TRY_RUN([
  77 int main(void) {
  78   static int Array[[3]];
  79   unsigned int B = 3;
  80   int i;
  81   for(i=0; i<B; i++) Array[[i]] = i - 3;
  82   exit( Array[[1]] != -2 );
  83 }],
  84     ac_cv_c_gcc_strength_bug="no",
  85     ac_cv_c_gcc_strength_bug="yes",
  86     ac_cv_c_gcc_strength_bug="yes") )
  87   if test "$ac_cv_c_gcc_strength_bug" = "yes"
  88   then
  89     CFLAGS="$CFLAGS -fno-strength-reduce"
  90   fi
  91 fi
  92
  93 dnl **** Check for underscore on external symbols ****
  94
  95 AC_CACHE_CHECK("whether external symbols need an underscore prefix",
  96                ac_cv_c_extern_prefix,
  97 [saved_libs=$LIBS
  98 LIBS="conftest_asm.s $LIBS"
  99 cat > conftest_asm.s <<EOF
 100         .globl _ac_test
 101 _ac_test:
 102         .long 0
 103 EOF
 104 AC_TRY_LINK([extern int ac_test;],[if (ac_test) return 1],
 105             ac_cv_c_extern_prefix="yes",ac_cv_c_extern_prefix="no")
 106 LIBS=$saved_libs])
 107
 108 dnl **** Check for endianness ****
 109
 110 dnl AC_C_BIGENDIAN
 111
 112 dnl **** Check for functions ****
 113
 114 AC_FUNC_ALLOCA()
 115
 116 dnl **** Check for header files ****
 117
 118 AC_CHECK_HEADERS(\
 119         linux/cdrom.h \
 120 )
 121 AC_HEADER_STAT()
 122
 123 dnl **** Check for types ****
 124
 125 AC_C_CONST()
 126 AC_C_INLINE()
 127 AC_TYPE_SIZE_T()
 128 AC_CHECK_SIZEOF(long long,0)
 129
 130 if test "$HAVEGL" = "yes"
 131 then
 132   if test "$HAVESDL" = "yes"
 133   then
 134     BUILDNAMES="OpenGL (SDL)"
 135   fi
 136 fi
 137
 138 dnl **** Generate output files ****
 139
 140 MAKE_NAME=Makefile
 141 AC_SUBST_FILE(MAKE_RULES)
 142
 143 AC_OUTPUT(Makefile)
 144
 145 echo
 146 echo "HHeretic configuration finished."
 147 echo "Enabled targets: $BUILDNAMES"
 148 echo
 149 if test "$HAVESDL" = "no"
 150 then
 151   echo "It is recommended that you install SDL (http://www.libsdl.org)."
 152   echo "Other targets will compile, but they are no longer supported."
 153   echo "If SDL is installed, you will need to upgrade to version $SDL_VERSION"
 154   echo
 155 fi
 156 echo "Type 'make' to compile."
 157 echo