configure.ac

   1
   2 AC_INIT(cpu.c)
   3
   4 CFLAGS="$CFLAGS"
   5 # if user sets custom CFLAGS, don't enforce our optimization flags
   6 test -n "$CFLAGS" && enable_optimize=no
   7
   8
   9 AC_PROG_CC
  10 AC_PROG_CPP
  11 AC_PROG_INSTALL
  12
  13 old_cflags="$CFLAGS"
  14 CFLAGS="$CFLAGS -Wno-unused-function -Wno-deprecated-declarations -Wno-overlength-strings"
  15 AC_TRY_COMPILE([], [typedef int foo;], [], [CFLAGS="$old_cflags"])
  16
  17 test "$cross_compiling" = "yes" || AC_C_BIGENDIAN
  18 test "$ac_cv_c_bigendian" = "no" && ENDIAN="-DIS_LITTLE_ENDIAN"
  19 test "$cross_compiling" = "yes" || LIBS="$LIBS -L/usr/X11R6/lib"
  20 test x"$host" = x && host=`$CC -dumpmachine`
  21
  22
  23 AC_ARG_WITH(fb,      [  --with-fb                       build framebuffer device interface], [], [with_fb=yes])
  24 AC_ARG_WITH(svgalib, [  --with-svgalib                  build Linux svgalib interface], [], [with_svgalib=yes])
  25 AC_ARG_WITH(sdl,     [  --with-sdl                      build SDL interface], [], [with_sdl=auto])
  26 AC_ARG_WITH(sdl2,    [  --with-sdl2                     build SDL2 interface], [], [with_sdl2=yes])
  27 AC_ARG_WITH(sound,   [  --with-sound=no,oss,sdl,ao      select sound interface], [], [with_sound=yes])
  28
  29
  30
  31 SOUND=""
  32 JOY=""
  33
  34 if test "$with_sound" != "no" ; then
  35 if test "$with_sound" = "yes" || test "$with_sound" = "ao" ; then
  36 AC_CHECK_HEADERS(ao/ao.h, [SOUND=sys/ao/ao.o ; LIBS="$LIBS -Wl,--as-needed -lao -Wl,--no-as-needed"])
  37 fi
  38 if test -z "$SOUND" && ( test "$with_sound" = "yes" || test "$with_sound" = "sdl" ) ; then
  39 AC_CHECK_HEADERS(SDL/SDL.h, [SOUND=sys/sdl/sdl-audio.o ; LIBS="$LIBS -lSDL"])
  40 fi
  41 if test -z "$SOUND" && ( test "$with_sound" = "yes" || test "$with_sound" = "oss" ) ; then
  42 AC_CHECK_HEADERS(sys/soundcard.h, [SOUND=sys/oss/oss.o ; CPPFLAGS="$CPPFLAGS -DHAVE_SYS_SOUNDCARD_H"], [
  43  AC_CHECK_HEADERS(machine/soundcard.h, [SOUND=sys/oss/oss.o ; CPPFLAGS="$CPPFLAGS -DHAVE_MACHINE_SOUNDCARD_H"], [
  44   AC_CHECK_HEADERS(soundcard.h, [SOUND=sys/oss/oss.o ; CPPFLAGS="$CPPFLAGS -DHAVE_SOUNDCARD_H"], [
  45    test "$with_sound" = "oss" && AC_MSG_WARN(oss selected but required headers not found)
  46   ])
  47  ])
  48 ])
  49 fi
  50 fi
  51
  52 AC_CHECK_HEADERS(linux/joystick.h, [JOY=sys/linux/joy.o])
  53 test "$with_fb" = "no" || AC_CHECK_HEADERS(linux/fb.h, [with_fb=linux])
  54
  55 test "$SOUND" || SOUND=sys/dummy/nosound.o
  56 test "$JOY" || JOY=sys/dummy/nojoy.o
  57
  58
  59
  60
  61
  62
  63 case "$with_fb" in
  64 linux) FB_OBJS="sys/linux/fbdev.o sys/linux/kb.o sys/pc/keymap.o" ;;
  65 *) FB_OBJS="" ; with_fb=no ;;
  66 esac
  67
  68 if test "$with_svgalib" != "no" ; then
  69 AC_CHECK_LIB(vga, vga_init, [
  70 AC_CHECK_HEADERS(vga.h vgakeyboard.h, ,[
  71 AC_MSG_WARN(svgalib found but headers are missing!!)
  72 with_svgalib=no
  73 ])], [with_svgalib=no])
  74 fi
  75
  76 if test "$with_sdl2" != no ; then
  77 SDL2_LIBS=-lSDL2
  78 AC_CHECK_LIB(SDL2, SDL_Init, [
  79  AC_CHECK_HEADERS(SDL2/SDL.h, [
  80    with_sdl2=yes
  81   ], [
  82    AC_MSG_WARN(SDL2 found but headers are missing!!)
  83    with_sdl2=no
  84  ])
  85 ], [with_sdl2=no], $SDL2_LIBS)
  86 fi
  87
  88 if test "$with_sdl2" = "no" && test "$with_sdl" != "no" ; then
  89  SDL_LIBS=-lSDL
  90  AC_CHECK_LIB(SDL, SDL_Init, [
  91   AC_CHECK_HEADERS(SDL/SDL.h, [
  92     with_sdl=yes
  93    ], [
  94     AC_MSG_WARN(SDL found but headers are missing!!)
  95     with_sdl=no
  96   ])
  97  ], [with_sdl=no], $SDL2_LIBS)
  98 else
  99  with_sdl=no
 100 fi
 101
 102 if test "$with_sdl" != yes && test "$with_sdl2" != yes ; then
 103 AC_CHECK_FUNCS(usleep, ,[
 104 AC_CHECK_FUNCS(select, ,[
 105 AC_MSG_ERROR(your system must support either usleep or select)
 106 ])])
 107 fi
 108
 109 AC_PATH_X
 110
 111 AH_TEMPLATE(HAVE_LIBXEXT)
 112 if test "$no_x" != "yes" ; then
 113 with_x=yes
 114 AC_CHECK_LIB(Xext, XShmCreateImage, [AC_DEFINE(HAVE_LIBXEXT)])
 115 AC_CHECK_HEADERS(sys/ipc.h sys/shm.h X11/Xlib.h X11/Xutil.h X11/keysym.h X11/extensions/XShm.h, [], [], [[
 116 #include <X11/Xlib.h>
 117 #include <X11/Xutil.h>
 118 #include <X11/keysym.h>
 119 #define _SVID_SOURCE
 120 #define _XOPEN_SOURCE
 121 ]])
 122 test "$x_includes" && XINCS="-I$x_includes"
 123 test "$x_libraries" && XLIBS="-L$x_libraries"
 124 else
 125 with_x=no
 126 fi
 127
 128
 129
 130 test "$with_x" = "no" || TARGETS="$TARGETS xgnuboy"
 131 test "$with_fb" = "no" || TARGETS="$TARGETS fbgnuboy"
 132 test "$with_svgalib" = "no" || TARGETS="$TARGETS sgnuboy"
 133 test "$with_sdl" = "no" || TARGETS="$TARGETS sdlgnuboy"
 134 test "$with_sdl2" = "no" || TARGETS="$TARGETS sdl2gnuboy"
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145 AC_ARG_ENABLE(warnings, [  --enable-warnings       enable selected compiler warnings], [], [enable_warnings=yes])
 146 AC_ARG_ENABLE(debug,    [  --enable-debug          include debugging symbols], [])
 147 AC_ARG_ENABLE(profile,  [  --enable-profile        enable performance profiling], [])
 148 AC_ARG_ENABLE(arch,     [  --enable-arch           compile for specific host cpu architecture], [], [enable_arch=no])
 149 AC_ARG_ENABLE(optimize, [  --enable-optimize=LEVEL select optimization level (full,low,none)], [], [enable_optimize=yes])
 150 AC_ARG_ENABLE(asm,      [  --enable-asm            use hand-optimized asm cores], [], [enable_asm=no])
 151
 152
 153 if test "$enable_warnings" = yes ; then
 154 case "$CC" in *gcc*)
 155 AC_MSG_RESULT(enabling selected compiler warnings)
 156 CFLAGS="$CFLAGS -Wall" ;;
 157 *)
 158 AC_MSG_RESULT(disabling warnings for non-gcc compiler) ;;
 159 esac
 160 fi
 161
 162 if test "$enable_debug" = yes ; then
 163 AC_MSG_RESULT(including debugging symbols)
 164 CFLAGS="$CFLAGS -g"
 165 fi
 166
 167 if test "$enable_profile" = yes ; then
 168 AC_MSG_RESULT(enabling performance profiling)
 169 CFLAGS="$CFLAGS -pg"
 170 fi
 171
 172 if test "$enable_arch" = yes ; then
 173 CFLAGS="$CFLAGS -march=native"
 174 fi
 175
 176 case "$enable_optimize" in
 177 yes|full)
 178 AC_MSG_RESULT(producing heavily optimized code)
 179
 180 CFLAGS="$CFLAGS -O3"
 181
 182 case "$host" in
 183 x86_64*|i?86*) CFLAGS="$CFLAGS -DALLOW_UNALIGNED_IO" ;;
 184 esac
 185
 186 case "$CC" in
 187 *gcc*) CFLAGS="$CFLAGS -fstrength-reduce -fthread-jumps \
 188  -fcse-follow-jumps -fcse-skip-blocks -frerun-cse-after-loop \
 189  -fexpensive-optimizations -fforce-addr" ;;
 190 esac
 191
 192 if test "$enable_debug" != yes -a "$enable_profile" != yes ; then
 193 CFLAGS="$CFLAGS -fomit-frame-pointer"
 194 LDFLAGS="$LDFLAGS -s"
 195 fi ;;
 196
 197 low)
 198
 199 AC_MSG_RESULT(using minimal optimizations)
 200 CFLAGS="$CFLAGS -O3" ;;
 201
 202 esac
 203
 204 if test "$enable_asm" = yes ; then
 205 case "$host" in
 206 i?86*)
 207 AC_MSG_RESULT(using optimized i386 cores)
 208 ASM="-DUSE_ASM -I./asm/i386" ; ASM_OBJS="asm/i386/cpu.o asm/i386/lcd.o asm/i386/refresh.s" ;;
 209 *)
 210 AC_MSG_RESULT(no optimized asm core available for $host) ;;
 211 esac
 212 fi
 213
 214 case "$host" in
 215     *-*-mingw* | *-*-cygwin* | *-*-windows* ) SYS_OBJS=sys/windows/windows.o ;;
 216     *-*-dos* ) SYS_OBJS=sys/dos/dos.o ;;
 217     *) SYS_OBJS=sys/nix/nix.o ;;
 218 esac
 219
 220
 221 AC_SUBST(SYS_DEFS)
 222 AC_SUBST(ENDIAN)
 223 AC_SUBST(SOUND)
 224 AC_SUBST(JOY)
 225 AC_SUBST(ASM)
 226 AC_SUBST(ASM_OBJS)
 227 AC_SUBST(SYS_OBJS)
 228 AC_SUBST(FB_OBJS)
 229 AC_SUBST(SDL_CFLAGS)
 230 AC_SUBST(SDL_LIBS)
 231 AC_SUBST(SDL2_LIBS)
 232 AC_SUBST(TARGETS)
 233 AC_SUBST(XINCS)
 234 AC_SUBST(XLIBS)
 235
 236 AC_CONFIG_HEADER(sys/nix/config.h)
 237 AC_OUTPUT(Makefile)
 238
 239
 240