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      1 #/bin/sh
      2 #
      3 # this script is used to rebuild SDL from sources in the current
      4 # directory. It depends on the Android emulator build scripts
      5 # that should normally be located in ../emulator/android/build
      6 # but you can also use ANDROID_QEMU_PATH in your environment
      7 # to point to the top of the Android emulator sources
      8 #
      9 #
     10 
     11 # first, let's see which system we're running this on
     12 cd `dirname $0`
     13 
     14 # try to find the Android build directory automatically
     15 if [ -z "$ANDROID_QEMU_PATH" ] ; then
     16     if [ -f ../../android/build/common.sh ] ; then
     17         ANDROID_QEMU_PATH=../..
     18     else
     19         echo "You must define ANDROID_QEMU_PATH in your environment to point"
     20         echo "to the directory containing the Android emulator's sources."
     21         exit 1
     22     fi
     23 fi
     24 
     25 if [ ! -d $ANDROID_QEMU_PATH ] ; then
     26     echo "Your ANDROID_QEMU_PATH does not point to a valid directory."
     27     exit 1
     28 fi
     29 
     30 if [ ! -f $ANDROID_QEMU_PATH/android/build/common.sh ] ; then
     31     echo "Your ANDROID_QEMU_PATH does not point to a directory that"
     32     echo "contains the Android emulator build scripts."
     33     exit 1
     34 fi
     35 
     36 # source common functions definitions
     37 . $ANDROID_QEMU_PATH/android/build/common.sh
     38 
     39 # Parse options
     40 OPTION_TRY_64=no
     41 OPTION_HELP=no
     42 OPTION_TARGETS=
     43 OPTION_FORCE_AUTODETECT=no
     44 OPTION_NO_TIGER=no
     45 
     46 if [ -z "$CC" ] ; then
     47   CC=gcc
     48 fi
     49 
     50 for opt do
     51   optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
     52   case "$opt" in
     53   --help|-h|-\?) OPTION_HELP=yes
     54   ;;
     55   --verbose)
     56     if [ "$VERBOSE" = "yes" ] ; then
     57         VERBOSE2=yes
     58     else
     59         VERBOSE=yes
     60     fi
     61   ;;
     62   --cc=*) CC="$optarg" ; HOSTCC=$CC
     63   ;;
     64   --try-64) OPTION_TRY_64=yes
     65   ;;
     66   --prefix=*) OPTION_TARGETS="$OPTION_TARGETS $optarg"
     67   ;;
     68   --force-autodetect) OPTION_FORCE_AUTODETECT=yes
     69   ;;
     70   --no-tiger) OPTION_NO_TIGER=yes
     71   ;;
     72   *)
     73     echo "unknown option '$opt', use --help"
     74     exit 1
     75   esac
     76 done
     77 
     78 # Print the help message
     79 #
     80 if [ "$OPTION_HELP" = "yes" ] ; then
     81     cat << EOF
     82 
     83 Usage: rebuild.sh [options]
     84 Options: [defaults in brackets after descriptions]
     85 EOF
     86     echo "Standard options:"
     87     echo "  --help                   print this message"
     88     echo "  --cc=PATH                specify C compiler [$CC]"
     89     echo "  --try-64                 try to build a 64-bit executable (may crash)"
     90     echo "  --verbose                verbose configuration"
     91     echo "  --force-autodetect       force feature auto-detection"
     92     echo "  --no-tiger               do not generate Tiger-compatible binaries (OS X only)"
     93     echo ""
     94     exit 1
     95 fi
     96 
     97 # we only support generating 32-bit binaris on 64-bit systems.
     98 # And we may need to add a -Wa,--32 to CFLAGS to let the assembler
     99 # generate 32-bit binaries on Linux x86_64.
    100 #
    101 if [ "$OPTION_TRY_64" != "yes" ] ; then
    102     force_32bit_binaries
    103 fi
    104 
    105 # default target
    106 if [ -z "$OPTION_TARGETS" ] ; then
    107   OPTION_TARGETS=out/$OS
    108 fi
    109 
    110 # we can build SDL with Cygwin, so enable it
    111 enable_cygwin
    112 
    113 setup_toolchain
    114 
    115 ###
    116 ### Special compiler and linker flags
    117 ###
    118 
    119 case "$OS" in
    120     linux-*)
    121         BUILD_CFLAGS="-D_GNU_SOURCE=1 -fvisibility=hidden -DXTHREADS -D_REENTRANT"
    122         # prevent -fstack-protector or the generated binaries will not link
    123         BUILD_CFLAGS="$BUILD_CFLAGS -fno-stack-protector"
    124         ;;
    125     darwin-*)
    126         BUILD_CFLAGS="-D_GNU_SOURCE=1 -fvisibility=hidden -DTARGET_API_MAC_CARBON -DTARGET_API_MAC_OSX -D_THREAD_SAFE -force_cpusubtype_ALL -fpascal-strings"
    127         # detect the 10.4 SDK and use it automatically
    128         TIGER_SDK=/Developer/SDKs/MacOSX10.4u.sdk
    129         if [ ! -d $TIGER_SDK -a $OPTION_NO_TIGER = no ] ; then
    130             echo "Please install the 10.4 SDK at $TIGER_SDK to generate Tiger-compatible binaries."
    131             echo "If you don't want compatibility, use --no-tiger option instead."
    132             exit 1
    133         fi
    134         if [ -d $TIGER_SDK ] ; then
    135             TIGER_OPTS="-isysroot $TIGER_SDK -mmacosx-version-min=10.4"
    136             BUILD_CFLAGS="$BUILD_CFLAGS $TIGER_OPTS"
    137             BUILD_LDFLAGS="$BUILD_LDFLAGS $TIGER_OPTS -Wl,-syslibroot,$(TIGER_SDK)"
    138             echo "Using OS X 10.4 SDK to generate Tiger-compatible binaries."
    139         else
    140             echo "Warning: the generated binaries will not be compatible with Tiger."
    141         fi
    142         ;;
    143     windows)
    144         BUILD_CFLAGS="-D_GNU_SOURCE=1"
    145         ;;
    146     *)
    147         BUILD_CFLAGS=
    148 esac
    149 
    150 # BUILD_CFLAGS are used to build SDL, but SDL_CFLAGS are used
    151 # when clients want to use its facilities
    152 #
    153 case "$HOST_OS" in
    154     linux)
    155         SDL_CFLAGS="-D_GNU_SOURCE=1 -D_REENTRANT"
    156         SDL_STATIC_LIBS="-lm -ldl -lpthread -lrt"
    157         ;;
    158     darwin)
    159         SDL_CFLAGS="-D_GNU_SOURCE=1 -D_THREAD_SAFE"
    160         SDL_STATIC_LIBS="-Wl,-framework,OpenGL -Wl,-framework,Cocoa -Wl,-framework,QuickTime -Wl,-framework,ApplicationServices -Wl,-framework,Carbon -Wl,-framework,IOKit"
    161         ;;
    162     windows)
    163         SDL_CFLAGS="-D_GNU_SOURCE=1 -Dmain=SDL_main"
    164         SDL_STATIC_LIBS="-luser32 -lgdi32 -lwinmm"
    165         ;;
    166     *)
    167         SDL_CFLAGS=
    168         SDL_STATIC_LIBS=
    169 esac
    170 
    171 DOLLAR="$"
    172 SDL_STATIC_LIBS="$DOLLAR{libdir}/libSDLmain.a $DOLLAR{libdir}/libSDL.a $SDL_STATIC_LIBS"
    173 
    174 ###
    175 ### Features probes
    176 ###
    177 
    178 CONFIG_LIBC=yes
    179 
    180 ###
    181 ### Configuration files generation
    182 ###
    183 
    184 # create the objs directory that is going to contain all generated files
    185 # including the configuration ones
    186 #
    187 mkdir -p objs
    188 
    189 config_add ()
    190 {
    191     echo "$1" >> $config_h
    192 }
    193 
    194 # used to add a macro define/undef line to the configuration
    195 # $1: macro name
    196 # $2: 1, 0, yes or no
    197 # $3: optional log prefix
    198 config_add_macro ()
    199 {
    200     local logname
    201     logname="${3:-CfgMacro   }"
    202     case "$2" in
    203         0|no|false)
    204             config_add "/* #undef $1 */"
    205             log "$logname: $1=0"
    206             ;;
    207         1|yes|true)
    208             config_add "#define $1 1"
    209             log "$logname: $1=1"
    210             ;;
    211     esac
    212 }
    213 
    214 # used to add host-os-specific driver macros to the config file
    215 # $1 : driver prefix, e.g. DRIVERS_VIDEO
    216 # $2 : macro prefix
    217 # this will look for DRIVERS_VIDEO_${HOST_OS}, and, if it is not
    218 # defined in DRIVERS_VIDEO_default
    219 #
    220 # then this will call 'config_add ${2}_${driver}' for each driver listed
    221 #
    222 config_add_driver_macros ()
    223 {
    224     local  driver_list="`var_value ${1}_${HOST_OS}`"
    225     local  driver_name
    226     if [ -z "$driver_list" ] ; then
    227         driver_list="`var_value ${1}_default`"
    228     fi
    229     for driver_name in $driver_list; do
    230         config_add_macro "${2}_${driver_name}" yes
    231     done
    232 }
    233 
    234 config_h=objs/SDL_config.h
    235 
    236 # a function used to check the availability of a given Standard C header
    237 # $1 : header name, without the .h suffix nor enclosing brackets (e.g. 'memory' for <memory.h>)
    238 # this will update the configuration with a relevant line
    239 sdl_check_header ()
    240 {
    241     local result
    242     local header
    243     local macro
    244     header="<$1.h>"
    245     macro=`to_uppercase $1`
    246     macro=`echo $macro | tr '/' '_'`
    247     feature_check_header result "$header"
    248     config_add_macro HAVE_${macro}_H $result "StdCHeader "
    249 }
    250 
    251 # call sdl_check_header with a list of header names
    252 sdl_check_headers ()
    253 {
    254     for hh in $*; do
    255         sdl_check_header "$hh"
    256     done
    257 }
    258 
    259 # a function used to check that a given function is available in the C library
    260 # this will update the configuration with a relevant line
    261 # $1: function name
    262 # $2: optional, libraries to link against
    263 #
    264 sdl_check_func ()
    265 {
    266     local result
    267     local funcname
    268     local macro
    269     funcname="$1"
    270     macro=`to_uppercase $1`
    271     rm -f $TMPC
    272     cat > $TMPC <<EOF
    273 #undef $funcname
    274 #define $funcname  _innocuous_$funcname
    275 #include <assert.h>
    276 #undef $funcname
    277 
    278 typedef void (*func_t)(void);
    279 extern void $funcname(void);
    280 func_t  _dummy = $funcname;
    281 int   main(void)
    282 {
    283     return _dummy == $funcname;
    284 }
    285 EOF
    286     EXTRA_LDFLAGS="$2"
    287     feature_check_link result
    288     config_add_macro HAVE_${macro} $result "StdCFunc   "
    289 }
    290 
    291 # call sdl_check_func with a list of functions
    292 sdl_check_funcs ()
    293 {
    294     for ff in $*; do
    295         sdl_check_func "$ff"
    296     done
    297 }
    298 
    299 # check endianess of the host platform
    300 sdl_check_endianess ()
    301 {
    302     cat > $TMPC <<EOF
    303     int  main(void)
    304     {
    305         union {
    306             unsigned short  v;
    307             unsigned char   b[2];
    308         } u;
    309 
    310         u.v = 0x1234;
    311         return (u.b[0] == 0x12);
    312     }
    313 EOF
    314     feature_run_exec test_e
    315     if [ "$test_e" = "1" ] ; then
    316         eval $1=4321
    317     else
    318         eval $1=1234
    319     fi
    320 }
    321 
    322 
    323 generate_SDL_config_h ()
    324 {
    325     echo "/* This file was autogenerated by '$PROGNAME' - do not edit */" > $config_h
    326 
    327     config_add "#ifndef _SDL_config_h"
    328     config_add "#define _SDL_config_h"
    329     config_add ""
    330     config_add "#include \"SDL_platform.h\""
    331     config_add ""
    332     
    333     # true for all architectures these days
    334     config_add_macro SDL_HAS_64BIT_TYPE  1
    335 
    336     sdl_check_endianess ENDIANESS
    337     config_add "#define SDL_BYTEORDER $ENDIANESS"
    338     config_add ""
    339 
    340     config_add_macro HAVE_LIBC $CONFIG_LIBC
    341 
    342     config_add "#if HAVE_LIBC"
    343     config_add ""
    344     config_add "/* Useful headers */"
    345 
    346     sdl_check_headers  alloca sys/types stdio
    347 
    348     # just like configure - force it to 1
    349     config_add "#define STDC_HEADERS  1"
    350 
    351     sdl_check_headers  stdlib stdarg malloc memory string strings inttypes stdint ctype math iconv signal altivec
    352 
    353     config_add "/* C library functions */"
    354 
    355     sdl_check_funcs  malloc calloc realloc free alloc
    356 
    357     config_add "#ifndef _WIN32 /* Don't use on Windows */"
    358 
    359     sdl_check_funcs  getenv putenv unsetenv
    360 
    361     config_add "#endif"
    362     sdl_check_funcs qsort abs bcopy memset memcpy memmove memcmp strlen strlcpy strlcat
    363     sdl_check_funcs strdup _strrev _strupr _strlwr index rindex strchr strrchr itoa _ltoa
    364     sdl_check_funcs _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull
    365     sdl_check_funcs strtod atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp
    366     sdl_check_funcs vsnprintf iconv sigaction setjmp nanosleep
    367 
    368     sdl_check_func clock_gettime -lrt
    369     sdl_check_func dlvsym -ldl
    370 
    371     sdl_check_funcs getpagesize
    372 
    373     config_add "#else"
    374     config_add "/* We may need some replacement for stdarg.h here */"
    375     config_add "#include <stdarg.h>"
    376     config_add "#endif /* HAVE_LIBC */"
    377     config_add ""
    378 
    379     config_add "/* Allow disabling of core subsystems */"
    380 
    381     config_add_macro SDL_AUDIO_DISABLED yes
    382     config_add_macro SDL_CDROM_DISABLED yes
    383     config_add_macro SDL_CPUINFO_DISABLED no
    384     config_add_macro SDL_EVENTS_DISABLED no
    385     config_add_macro SDL_FILE_DISABLED yes
    386     config_add_macro SDL_JOYSTICK_DISABLED yes
    387     config_add_macro SDL_LOADSO_DISABLED no
    388     config_add_macro SDL_THREADS_DISABLED no
    389     config_add_macro SDL_TIMERS_DISABLED no
    390     config_add_macro SDL_VIDEO_DISABLED no
    391 
    392     config_add ""
    393     config_add "/* Enable various shared object loading systems */"
    394 
    395     config_add_driver_macros DRIVERS_LOADSO SDL_LOADSO
    396 
    397     config_add ""
    398     config_add "/* Enable various threading systems */"
    399 
    400     config_add_driver_macros DRIVERS_THREAD SDL_THREAD
    401 
    402     config_add ""
    403     config_add "/* Enable various timer systems */"
    404 
    405     config_add_driver_macros DRIVERS_TIMER SDL_TIMER
    406 
    407     config_add ""
    408     config_add "/* Enable various video drivers */"
    409 
    410     config_add_driver_macros DRIVERS_VIDEO SDL_VIDEO_DRIVER
    411 
    412     config_add_driver_macros DRIVERS_MAIN SDL_MAIN
    413 
    414     # the following defines are good enough for all recent Unix distributions
    415     config_add "#define SDL_VIDEO_DRIVER_X11_DYNAMIC \"libX11.so.6\""
    416     config_add "#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT \"libXext.so.6\""
    417     config_add "#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR \"libXrandr.so.2\""
    418     config_add "#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRENDER \"libXrender.so.1\""
    419 
    420     # todo: OpenGL support ?
    421     # todo: Assembly routines support ?
    422 
    423     config_add "#endif /* _SDL_config_h */"
    424 }
    425 
    426 ### Build the config sub-makefile
    427 ###
    428 
    429 make_add ()
    430 {
    431     echo "$1" >> $config_mk
    432 }
    433 
    434 make_add_driver_macros ()
    435 {
    436     local driver_list="`var_value ${1}_${HOST_OS}`"
    437     local driver_name
    438     if [ -z "$driver_list" ] ; then
    439         driver_list="`var_value ${1}_default`"
    440     fi
    441     for driver_name in $driver_list; do
    442         make_add "SDL_$2_${driver_name} := yes"
    443     done
    444 }
    445 
    446 generate_sdl_config_mk ()
    447 {
    448     CFLAGS="$CFLAGS $BUILD_CFLAGS"
    449     LDFLAGS="$LDFLAGS $BUILD_LDFLAGS"
    450     create_config_mk
    451 
    452     make_add ""
    453     PWD=`pwd`
    454     make_add "SRC_PATH=$PWD"
    455     make_add "BUILD_SYSTEM=$ANDROID_QEMU_PATH/android/build"
    456 
    457     make_add "SDL_CONFIG_LIBC := $CONFIG_LIBC"
    458     make_add "SDL_CONFIG_CPUINFO := yes"
    459 
    460     make_add_driver_macros DRIVERS_LOADSO CONFIG_LOADSO
    461     make_add_driver_macros DRIVERS_THREAD CONFIG_THREAD
    462     make_add_driver_macros DRIVERS_TIMER  CONFIG_TIMER
    463     make_add_driver_macros DRIVERS_VIDEO  CONFIG_VIDEO
    464 
    465     make_add_driver_macros DRIVERS_MAIN   CONFIG_MAIN
    466 
    467     make_add "INSTALL_TARGETS := $OPTION_TARGETS"
    468 }
    469 
    470 ### Build the final sdl-config script from the template
    471 ###
    472 
    473 generate_sdl_config ()
    474 {
    475     # build a sed script that will replace all @VARIABLES@ in the template
    476     # with appropriate values
    477     rm -f $TMPC
    478 
    479     # replace @exec_prefix@ with "{prefix}", and @libdir@ with "{libdir}"
    480     cat > $TMPC <<EOF
    481 s!@exec_prefix@!\$\{prefix\}!g
    482 s!@libdir@!\$\{exec_prefix\}/libs!g
    483 s!@includedir@!\$\{prefix\}/include!g
    484 EOF
    485 
    486     # we want to enable static linking, do @ENABLE_STATIC_FALSE@ and @ENABLE_STATIC_TRUE@
    487     cat >> $TMPC <<EOF
    488 s!@ENABLE_STATIC_FALSE@!\#!g
    489 s!@ENABLE_STATIC_TRUE@!!g
    490 s!@ENABLE_SHARED_TRUE@!\#!g
    491 s!@ENABLE_SHARED_FALSE@!!g
    492 EOF
    493 
    494     # set the version to 1.2.15
    495     cat >> $TMPC <<EOF
    496 s!@SDL_VERSION@!1.2.15!g
    497 EOF
    498 
    499     #
    500     cat >> $TMPC <<EOF
    501 s!@SDL_CFLAGS@!$SDL_CFLAGS!g
    502 s!@SDL_STATIC_LIBS@!$SDL_STATIC_LIBS!g
    503 EOF
    504 
    505     cat sdl-config.in | sed -f $TMPC > objs/sdl-config
    506     chmod +x objs/sdl-config
    507 }
    508 
    509 # copy a configuration file or perform auto-detection if one is not available
    510 # or the --force-autodetect option was used
    511 # $1: basename of config file
    512 # $2: command to run to perform auto-detection/generation
    513 #
    514 copy_or_autodetect ()
    515 {
    516     if [ "$OPTION_FORCE_AUTODETECT" != "yes" -a -f android/build/$OS/$1 ] ; then
    517         log "Setup      : Copying $1 from android/build/$OS"
    518         cp -f android/build/$OS/$1 objs/$1
    519     else
    520         log "Setup      : Auto-generating $1"
    521         eval $2
    522     fi
    523 }
    524 
    525 generate_all ()
    526 {
    527   copy_or_autodetect SDL_config.h generate_SDL_config_h
    528   generate_sdl_config_mk
    529   copy_or_autodetect sdl-config generate_sdl_config
    530 }
    531 
    532 DRIVERS_LOADSO_default=DLOPEN
    533 DRIVERS_LOADSO_darwin=DLCOMPAT
    534 DRIVERS_LOADSO_windows=WIN32
    535 
    536 # TODO: determine if PTHREAD_RECURSIVE or PTHREAD_RECURSIVE_NP is valid for the platform
    537 DRIVERS_THREAD_default="PTHREAD PTHREAD_RECURSIVE_MUTEX"
    538 DRIVERS_THREAD_linux="PTHREAD PTHREAD_RECURSIVE_MUTEX_NP"
    539 DRIVERS_THREAD_windows=WIN32
    540 
    541 DRIVERS_TIMER_default=UNIX
    542 DRIVERS_TIMER_windows=WIN32
    543 
    544 # TODO: actually compute this properly for X11 and dynamic loading !!
    545 DRIVERS_VIDEO_default="X11 X11_DPMS X11_XINERAMA X11_XME"
    546 DRIVERS_VIDEO_darwin="QUARTZ"
    547 DRIVERS_VIDEO_windows="WINDIB"
    548 
    549 DRIVERS_MAIN_default=DUMMY
    550 DRIVERS_MAIN_darwin=MACOSX
    551 DRIVERS_MAIN_windows=WIN32
    552 
    553 generate_all
    554