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