add configure, revive pnd build, unify/refactor things
[picodrive.git] / configure
1 #!/bin/sh
2 # some elements originated from qemu configure
3 set -e
4
5 TMPC="/tmp/pcsx-conf-${RANDOM}-$$-${RANDOM}.c"
6 TMPO="/tmp/pcsx-conf-${RANDOM}-$$-${RANDOM}.o"
7 TMPB="/tmp/pcsx-conf-${RANDOM}-$$-${RANDOM}"
8 trap "rm -f $TMPC $TMPO $TMPB" EXIT INT QUIT TERM
9 rm -f config.log
10
11 compile_object()
12 {
13   c="$CC $CFLAGS -c $TMPC -o $TMPO $@"
14   echo $c >> config.log
15   $c >> config.log 2>&1
16 }
17
18 compile_binary()
19 {
20   c="$CC $CFLAGS $TMPC -o $TMPB $LDFLAGS $MAIN_LDLIBS $@"
21   echo $c >> config.log
22   $c >> config.log 2>&1
23 }
24
25 check_define()
26 {
27   $CC -E -dD $CFLAGS pico/arm_features.h | grep -q $1 || return 1
28   return 0
29 }
30
31 # setting options to "yes" or "no" will make that choice default,
32 # "" means "autodetect".
33
34 platform_list="generic pandora"
35 platform="generic"
36 sound_driver_list="oss alsa sdl"
37 sound_drivers=""
38 have_armv5=""
39 have_armv6=""
40 have_armv7=""
41 have_arm_neon=""
42 have_tslib=""
43 enable_dynarec="yes"
44 need_sdl="no"
45 need_xlib="no"
46 # these are for known platforms
47 optimize_cortexa8="no"
48 optimize_arm926ej="no"
49
50 # hardcoded stuff
51 CC="${CC-${CROSS_COMPILE}gcc}"
52 CXX="${CXX-${CROSS_COMPILE}g++}"
53 AS="${AS-${CROSS_COMPILE}as}"
54 MAIN_LDLIBS="$LDLIBS -lm"
55 config_mak="config.mak"
56
57 fail()
58 {
59   echo "$@"
60   exit 1
61 }
62
63 # call during arg parsing, so that cmd line can override platform defaults
64 set_platform()
65 {
66   platform=$1
67   case "$platform" in
68   generic)
69     ;;
70   pandora)
71     sound_drivers="oss alsa"
72     optimize_cortexa8="yes"
73     have_arm_neon="yes"
74     ;;
75   *)
76     fail "unsupported platform: $platform"
77     ;;
78   esac
79 }
80
81 for opt do
82   optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'` || true
83   case "$opt" in
84   --help|-h) show_help="yes"
85   ;;
86   --platform=*) set_platform "$optarg"
87   ;;
88   --sound-drivers=*) sound_drivers="$optarg"
89   ;;
90   --enable-neon) have_arm_neon="yes"
91   ;;
92   --disable-neon) have_arm_neon="no"
93   ;;
94   --disable-dynarec) enable_dynarec="no"
95   ;;
96   *) echo "ERROR: unknown option $opt"; show_help="yes"
97   ;;
98   esac
99 done
100
101 if [ "$show_help" = "yes" ]; then
102   echo "options:"
103   echo "  --help                   print this message"
104   echo "  --platform=NAME          target platform [$platform]"
105   echo "                           available: $platform_list"
106   echo "  --sound-drivers=LIST     sound output drivers [guessed]"
107   echo "                           available: $sound_driver_list"
108   echo "  --enable-neon"
109   echo "  --disable-neon           enable/disable ARM NEON optimizations [guessed]"
110   echo "  --disable-dynarec        disable dynamic recompiler"
111   echo "                           (dynarec is only available and enabled on ARM)"
112   echo "influential environment variables:"
113   echo "  CROSS_COMPILE CC CXX AS CFLAGS ASFLAGS LDFLAGS LDLIBS"
114   exit 1
115 fi
116
117 # validate selections
118 if [ "x$sound_drivers" != "x" ]; then
119   for d in $sound_drivers; do
120     if ! echo $sound_driver_list | grep -q "\<$d\>"; then
121       fail "unsupported sound driver: $sound_driver"
122     fi
123   done
124 fi
125
126 if [ "$need_libpicofe" = "yes" ]; then
127   if ! test -f "frontend/libpicofe/README"; then
128     fail "libpicofe is missing, please run 'git submodule init && git submodule update'"
129   fi
130 fi
131
132 #if [ "$need_warm" = "yes" ]; then
133 #  if ! test -f "frontend/warm/README"; then
134 #    fail "wARM is missing, please run 'git submodule init && git submodule update'"
135 #  fi
136 #fi
137
138 # basic compiler test
139 cat > $TMPC <<EOF
140 int main(void) { return 0; }
141 EOF
142 if ! compile_binary; then
143   fail "compiler test failed, please check config.log"
144 fi
145
146 if [ -z "$ARCH" ]; then
147   ARCH=`$CC -dumpmachine | awk -F '-' '{print $1}'`
148 fi
149
150 case "$ARCH" in
151 arm*)
152   # ARM stuff
153   ARCH="arm"
154
155   if [ "$optimize_cortexa8" = "yes" ]; then
156     CFLAGS="$CFLAGS -mcpu=cortex-a8 -mtune=cortex-a8"
157     ASFLAGS="$ASFLAGS -mcpu=cortex-a8"
158   fi
159   if [ "$optimize_arm926ej" = "yes" ]; then
160     CFLAGS="$CFLAGS -mcpu=arm926ej-s -mtune=arm926ej-s"
161     ASFLAGS="$ASFLAGS -mcpu=arm926ej-s -mfloat-abi=softfp"
162   fi
163
164   if [ "x$have_arm_neon" = "x" ]; then
165     # detect NEON from user-supplied cflags to enable asm code
166     have_arm_neon=`check_define __ARM_NEON__ && echo yes` || true
167   fi
168   if [ "x$have_armv7" = "x" ]; then
169     if check_define HAVE_ARMV7; then
170       have_armv7="yes"
171       have_armv6="yes"
172       have_armv5="yes"
173     fi
174   fi
175   if [ "x$have_armv6" = "x" ]; then
176     if check_define HAVE_ARMV6; then
177       have_armv6="yes"
178       have_armv5="yes"
179     fi
180   fi
181   if [ "x$have_armv5" = "x" ]; then
182     have_armv5=`check_define HAVE_ARMV5 && echo yes` || true
183   fi
184
185   # automatically set mfpu and mfloat-abi if they are not set
186   if [ "$have_arm_neon" = "yes" ]; then
187     fpu="neon"
188   elif [ "$have_armv6" = "yes" ]; then
189     fpu="vfp"
190   fi
191   if [ "x$fpu" != "x" ]; then
192     echo "$CFLAGS" | grep -q -- '-mfpu=' || CFLAGS="$CFLAGS -mfpu=$fpu"
193     echo "$ASFLAGS" | grep -q -- '-mfpu=' || ASFLAGS="$ASFLAGS -mfpu=$fpu"
194     floatabi_set_by_gcc=`$CC -v 2>&1 | grep -q -- --with-float= && echo yes` || true
195     if [ "$floatabi_set_by_gcc" != "yes" ]; then
196       echo "$CFLAGS" | grep -q -- '-mfloat-abi=' || CFLAGS="$CFLAGS -mfloat-abi=softfp"
197       echo "$ASFLAGS" | grep -q -- '-mfloat-abi=' || ASFLAGS="$ASFLAGS -mfloat-abi=softfp"
198     fi
199   fi
200
201   # must disable thumb as recompiler can't handle it
202   if check_define __thumb__; then
203     CFLAGS="$CFLAGS -marm"
204   fi
205
206   # warn about common mistakes
207   if [ "$have_armv5" != "yes" ]; then
208     if ! echo "$CFLAGS" | grep -q -- '-mcpu=\|-march='; then
209       echo "Warning: compiling for ARMv4, is that really what you want?"
210       echo "You probably should specify -mcpu= or -march= like this:"
211       echo "  CFLAGS=-march=armv6 ./configure ..."
212     fi
213   fi
214   if [ "$have_arm_neon" = "yes" -a "$have_armv7" != "yes" ]; then
215     echo "Warning: compiling for NEON, but not ARMv7?"
216     echo "You probably want to specify -mcpu= or -march= like this:"
217     echo "  CFLAGS=-march=armv7-a ./configure ..."
218   fi
219   ;;
220 *)
221   # dynarec only available on ARM
222   enable_dynarec="no"
223   ;;
224 esac
225
226 case "$platform" in
227 generic)
228   need_sdl="yes"
229   ;;
230 esac
231
232 # header/library presence tests
233 check_zlib()
234 {
235   cat > $TMPC <<EOF
236   #include <zlib.h>
237   int main(void) { uncompress(0, 0, 0, 0); }
238 EOF
239   compile_binary
240 }
241
242 check_libpng()
243 {
244   cat > $TMPC <<EOF
245   #include <png.h>
246   void main() { png_init_io(0, 0); }
247 EOF
248   compile_binary
249 }
250
251 check_oss()
252 {
253   cat > $TMPC <<EOF
254   #include <sys/soundcard.h>
255   #include <sys/ioctl.h>
256   void main() { int a=0; ioctl(0, SNDCTL_DSP_SETFMT, &a); }
257 EOF
258   compile_binary
259 }
260
261 check_alsa()
262 {
263   cat > $TMPC <<EOF
264   #include <alsa/asoundlib.h>
265   void main() { snd_pcm_open(0, 0, 0, 0); }
266 EOF
267   compile_binary "$@"
268 }
269
270 check_sdl()
271 {
272   cat > $TMPC <<EOF
273   #include <SDL.h>
274   void main() { SDL_OpenAudio(0, 0); }
275 EOF
276   compile_binary "$@"
277 }
278
279 #MAIN_LDLIBS="$MAIN_LDLIBS -lz"
280 #check_zlib || fail "please install zlib (libz-dev)"
281
282 MAIN_LDLIBS="-lpng $MAIN_LDLIBS"
283 check_libpng || fail "please install libpng (libpng-dev)"
284
285 # find what audio support we can compile
286 if [ "x$sound_drivers" = "x" ]; then
287   if check_oss; then sound_drivers="$sound_drivers oss"; fi
288   if check_alsa -lasound; then
289     sound_drivers="$sound_drivers alsa"
290     MAIN_LDLIBS="-lasound $MAIN_LDLIBS"
291   fi
292   if [ "$need_sdl" = "yes" ] || check_sdl `sdl-config --cflags --libs`; then
293     sound_drivers="$sound_drivers sdl"
294     need_sdl="yes"
295   fi
296 else
297   if echo $sound_drivers | grep -q "\<oss\>"; then
298     check_oss || fail "oss support is missing"
299   fi
300   if echo $sound_drivers | grep -q "\<alsa\>"; then
301     MAIN_LDLIBS="-lasound $MAIN_LDLIBS"
302     check_alsa || fail "please install libasound2-dev"
303   fi
304 fi
305
306 if [ "$need_sdl" = "yes" ]; then
307   which sdl-config > /dev/null || \
308     fail "sdl-config is missing; please install libsdl (libsdl1.2-dev)"
309   CFLAGS="$CFLAGS `sdl-config --cflags`"
310   MAIN_LDLIBS="`sdl-config --libs` $MAIN_LDLIBS"
311   check_sdl || fail "please install libsdl (libsdl1.2-dev)"
312 fi
313
314 cat > $TMPC <<EOF
315 void test(void *f, void *d) { fread(d, 1, 1, f); }
316 EOF
317 if compile_object -Wno-unused-result; then
318   CFLAGS="$CFLAGS -Wno-unused-result"
319 fi
320
321 # set things that failed to autodetect to "no"
322 test "x$have_armv6" != "x" || have_armv6="no"
323 test "x$have_armv7" != "x" || have_armv7="no"
324 test "x$have_arm_neon" != "x" || have_arm_neon="no"
325
326 echo "architecture        $ARCH"
327 echo "platform            $platform"
328 echo "sound drivers       $sound_drivers"
329 echo "C compiler          $CC"
330 echo "C compiler flags    $CFLAGS"
331 echo "libraries           $MAIN_LDLIBS"
332 echo "linker flags        $LDFLAGS"
333 echo "enable dynarec      $enable_dynarec"
334 # echo "ARMv7 optimizations $have_armv7"
335 # echo "enable ARM NEON     $have_arm_neon"
336
337 echo "# Automatically generated by configure" > $config_mak
338 printf "# Configured with:" >> $config_mak
339 printf " '%s'" "$0" "$@" >> $config_mak
340 echo >> $config_mak
341
342 echo "CC = $CC" >> $config_mak
343 echo "CXX = $CXX" >> $config_mak
344 echo "AS = $AS" >> $config_mak
345 echo "CFLAGS += $CFLAGS" >> $config_mak
346 echo "ASFLAGS += $ASFLAGS" >> $config_mak
347 echo "LDFLAGS += $LDFLAGS" >> $config_mak
348 echo "LDLIBS += $MAIN_LDLIBS" >> $config_mak
349 echo >> $config_mak
350
351 echo "ARCH = $ARCH" >> $config_mak
352 echo "PLATFORM = $platform" >> $config_mak
353 echo "SOUND_DRIVERS = $sound_drivers" >> $config_mak
354 if [ "$have_arm_neon" = "yes" ]; then
355   echo "HAVE_NEON = 1" >> $config_mak
356 fi
357 if [ "$enable_dynarec" = "yes" ]; then
358   echo "USE_DYNAREC = 1" >> $config_mak
359 fi
360
361 # use pandora's skin (for now)
362 test -e skin || ln -s platform/pandora/skin skin
363
364 # vim:shiftwidth=2:expandtab