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