add configure, revive pnd build, unify/refactor things
[picodrive.git] / configure
diff --git a/configure b/configure
new file mode 100755 (executable)
index 0000000..0e96a99
--- /dev/null
+++ b/configure
@@ -0,0 +1,364 @@
+#!/bin/sh
+# some elements originated from qemu configure
+set -e
+
+TMPC="/tmp/pcsx-conf-${RANDOM}-$$-${RANDOM}.c"
+TMPO="/tmp/pcsx-conf-${RANDOM}-$$-${RANDOM}.o"
+TMPB="/tmp/pcsx-conf-${RANDOM}-$$-${RANDOM}"
+trap "rm -f $TMPC $TMPO $TMPB" EXIT INT QUIT TERM
+rm -f config.log
+
+compile_object()
+{
+  c="$CC $CFLAGS -c $TMPC -o $TMPO $@"
+  echo $c >> config.log
+  $c >> config.log 2>&1
+}
+
+compile_binary()
+{
+  c="$CC $CFLAGS $TMPC -o $TMPB $LDFLAGS $MAIN_LDLIBS $@"
+  echo $c >> config.log
+  $c >> config.log 2>&1
+}
+
+check_define()
+{
+  $CC -E -dD $CFLAGS pico/arm_features.h | grep -q $1 || return 1
+  return 0
+}
+
+# setting options to "yes" or "no" will make that choice default,
+# "" means "autodetect".
+
+platform_list="generic pandora"
+platform="generic"
+sound_driver_list="oss alsa sdl"
+sound_drivers=""
+have_armv5=""
+have_armv6=""
+have_armv7=""
+have_arm_neon=""
+have_tslib=""
+enable_dynarec="yes"
+need_sdl="no"
+need_xlib="no"
+# these are for known platforms
+optimize_cortexa8="no"
+optimize_arm926ej="no"
+
+# hardcoded stuff
+CC="${CC-${CROSS_COMPILE}gcc}"
+CXX="${CXX-${CROSS_COMPILE}g++}"
+AS="${AS-${CROSS_COMPILE}as}"
+MAIN_LDLIBS="$LDLIBS -lm"
+config_mak="config.mak"
+
+fail()
+{
+  echo "$@"
+  exit 1
+}
+
+# call during arg parsing, so that cmd line can override platform defaults
+set_platform()
+{
+  platform=$1
+  case "$platform" in
+  generic)
+    ;;
+  pandora)
+    sound_drivers="oss alsa"
+    optimize_cortexa8="yes"
+    have_arm_neon="yes"
+    ;;
+  *)
+    fail "unsupported platform: $platform"
+    ;;
+  esac
+}
+
+for opt do
+  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'` || true
+  case "$opt" in
+  --help|-h) show_help="yes"
+  ;;
+  --platform=*) set_platform "$optarg"
+  ;;
+  --sound-drivers=*) sound_drivers="$optarg"
+  ;;
+  --enable-neon) have_arm_neon="yes"
+  ;;
+  --disable-neon) have_arm_neon="no"
+  ;;
+  --disable-dynarec) enable_dynarec="no"
+  ;;
+  *) echo "ERROR: unknown option $opt"; show_help="yes"
+  ;;
+  esac
+done
+
+if [ "$show_help" = "yes" ]; then
+  echo "options:"
+  echo "  --help                   print this message"
+  echo "  --platform=NAME          target platform [$platform]"
+  echo "                           available: $platform_list"
+  echo "  --sound-drivers=LIST     sound output drivers [guessed]"
+  echo "                           available: $sound_driver_list"
+  echo "  --enable-neon"
+  echo "  --disable-neon           enable/disable ARM NEON optimizations [guessed]"
+  echo "  --disable-dynarec        disable dynamic recompiler"
+  echo "                           (dynarec is only available and enabled on ARM)"
+  echo "influential environment variables:"
+  echo "  CROSS_COMPILE CC CXX AS CFLAGS ASFLAGS LDFLAGS LDLIBS"
+  exit 1
+fi
+
+# validate selections
+if [ "x$sound_drivers" != "x" ]; then
+  for d in $sound_drivers; do
+    if ! echo $sound_driver_list | grep -q "\<$d\>"; then
+      fail "unsupported sound driver: $sound_driver"
+    fi
+  done
+fi
+
+if [ "$need_libpicofe" = "yes" ]; then
+  if ! test -f "frontend/libpicofe/README"; then
+    fail "libpicofe is missing, please run 'git submodule init && git submodule update'"
+  fi
+fi
+
+#if [ "$need_warm" = "yes" ]; then
+#  if ! test -f "frontend/warm/README"; then
+#    fail "wARM is missing, please run 'git submodule init && git submodule update'"
+#  fi
+#fi
+
+# basic compiler test
+cat > $TMPC <<EOF
+int main(void) { return 0; }
+EOF
+if ! compile_binary; then
+  fail "compiler test failed, please check config.log"
+fi
+
+if [ -z "$ARCH" ]; then
+  ARCH=`$CC -dumpmachine | awk -F '-' '{print $1}'`
+fi
+
+case "$ARCH" in
+arm*)
+  # ARM stuff
+  ARCH="arm"
+
+  if [ "$optimize_cortexa8" = "yes" ]; then
+    CFLAGS="$CFLAGS -mcpu=cortex-a8 -mtune=cortex-a8"
+    ASFLAGS="$ASFLAGS -mcpu=cortex-a8"
+  fi
+  if [ "$optimize_arm926ej" = "yes" ]; then
+    CFLAGS="$CFLAGS -mcpu=arm926ej-s -mtune=arm926ej-s"
+    ASFLAGS="$ASFLAGS -mcpu=arm926ej-s -mfloat-abi=softfp"
+  fi
+
+  if [ "x$have_arm_neon" = "x" ]; then
+    # detect NEON from user-supplied cflags to enable asm code
+    have_arm_neon=`check_define __ARM_NEON__ && echo yes` || true
+  fi
+  if [ "x$have_armv7" = "x" ]; then
+    if check_define HAVE_ARMV7; then
+      have_armv7="yes"
+      have_armv6="yes"
+      have_armv5="yes"
+    fi
+  fi
+  if [ "x$have_armv6" = "x" ]; then
+    if check_define HAVE_ARMV6; then
+      have_armv6="yes"
+      have_armv5="yes"
+    fi
+  fi
+  if [ "x$have_armv5" = "x" ]; then
+    have_armv5=`check_define HAVE_ARMV5 && echo yes` || true
+  fi
+
+  # automatically set mfpu and mfloat-abi if they are not set
+  if [ "$have_arm_neon" = "yes" ]; then
+    fpu="neon"
+  elif [ "$have_armv6" = "yes" ]; then
+    fpu="vfp"
+  fi
+  if [ "x$fpu" != "x" ]; then
+    echo "$CFLAGS" | grep -q -- '-mfpu=' || CFLAGS="$CFLAGS -mfpu=$fpu"
+    echo "$ASFLAGS" | grep -q -- '-mfpu=' || ASFLAGS="$ASFLAGS -mfpu=$fpu"
+    floatabi_set_by_gcc=`$CC -v 2>&1 | grep -q -- --with-float= && echo yes` || true
+    if [ "$floatabi_set_by_gcc" != "yes" ]; then
+      echo "$CFLAGS" | grep -q -- '-mfloat-abi=' || CFLAGS="$CFLAGS -mfloat-abi=softfp"
+      echo "$ASFLAGS" | grep -q -- '-mfloat-abi=' || ASFLAGS="$ASFLAGS -mfloat-abi=softfp"
+    fi
+  fi
+
+  # must disable thumb as recompiler can't handle it
+  if check_define __thumb__; then
+    CFLAGS="$CFLAGS -marm"
+  fi
+
+  # warn about common mistakes
+  if [ "$have_armv5" != "yes" ]; then
+    if ! echo "$CFLAGS" | grep -q -- '-mcpu=\|-march='; then
+      echo "Warning: compiling for ARMv4, is that really what you want?"
+      echo "You probably should specify -mcpu= or -march= like this:"
+      echo "  CFLAGS=-march=armv6 ./configure ..."
+    fi
+  fi
+  if [ "$have_arm_neon" = "yes" -a "$have_armv7" != "yes" ]; then
+    echo "Warning: compiling for NEON, but not ARMv7?"
+    echo "You probably want to specify -mcpu= or -march= like this:"
+    echo "  CFLAGS=-march=armv7-a ./configure ..."
+  fi
+  ;;
+*)
+  # dynarec only available on ARM
+  enable_dynarec="no"
+  ;;
+esac
+
+case "$platform" in
+generic)
+  need_sdl="yes"
+  ;;
+esac
+
+# header/library presence tests
+check_zlib()
+{
+  cat > $TMPC <<EOF
+  #include <zlib.h>
+  int main(void) { uncompress(0, 0, 0, 0); }
+EOF
+  compile_binary
+}
+
+check_libpng()
+{
+  cat > $TMPC <<EOF
+  #include <png.h>
+  void main() { png_init_io(0, 0); }
+EOF
+  compile_binary
+}
+
+check_oss()
+{
+  cat > $TMPC <<EOF
+  #include <sys/soundcard.h>
+  #include <sys/ioctl.h>
+  void main() { int a=0; ioctl(0, SNDCTL_DSP_SETFMT, &a); }
+EOF
+  compile_binary
+}
+
+check_alsa()
+{
+  cat > $TMPC <<EOF
+  #include <alsa/asoundlib.h>
+  void main() { snd_pcm_open(0, 0, 0, 0); }
+EOF
+  compile_binary "$@"
+}
+
+check_sdl()
+{
+  cat > $TMPC <<EOF
+  #include <SDL.h>
+  void main() { SDL_OpenAudio(0, 0); }
+EOF
+  compile_binary "$@"
+}
+
+#MAIN_LDLIBS="$MAIN_LDLIBS -lz"
+#check_zlib || fail "please install zlib (libz-dev)"
+
+MAIN_LDLIBS="-lpng $MAIN_LDLIBS"
+check_libpng || fail "please install libpng (libpng-dev)"
+
+# find what audio support we can compile
+if [ "x$sound_drivers" = "x" ]; then
+  if check_oss; then sound_drivers="$sound_drivers oss"; fi
+  if check_alsa -lasound; then
+    sound_drivers="$sound_drivers alsa"
+    MAIN_LDLIBS="-lasound $MAIN_LDLIBS"
+  fi
+  if [ "$need_sdl" = "yes" ] || check_sdl `sdl-config --cflags --libs`; then
+    sound_drivers="$sound_drivers sdl"
+    need_sdl="yes"
+  fi
+else
+  if echo $sound_drivers | grep -q "\<oss\>"; then
+    check_oss || fail "oss support is missing"
+  fi
+  if echo $sound_drivers | grep -q "\<alsa\>"; then
+    MAIN_LDLIBS="-lasound $MAIN_LDLIBS"
+    check_alsa || fail "please install libasound2-dev"
+  fi
+fi
+
+if [ "$need_sdl" = "yes" ]; then
+  which sdl-config > /dev/null || \
+    fail "sdl-config is missing; please install libsdl (libsdl1.2-dev)"
+  CFLAGS="$CFLAGS `sdl-config --cflags`"
+  MAIN_LDLIBS="`sdl-config --libs` $MAIN_LDLIBS"
+  check_sdl || fail "please install libsdl (libsdl1.2-dev)"
+fi
+
+cat > $TMPC <<EOF
+void test(void *f, void *d) { fread(d, 1, 1, f); }
+EOF
+if compile_object -Wno-unused-result; then
+  CFLAGS="$CFLAGS -Wno-unused-result"
+fi
+
+# set things that failed to autodetect to "no"
+test "x$have_armv6" != "x" || have_armv6="no"
+test "x$have_armv7" != "x" || have_armv7="no"
+test "x$have_arm_neon" != "x" || have_arm_neon="no"
+
+echo "architecture        $ARCH"
+echo "platform            $platform"
+echo "sound drivers       $sound_drivers"
+echo "C compiler          $CC"
+echo "C compiler flags    $CFLAGS"
+echo "libraries           $MAIN_LDLIBS"
+echo "linker flags        $LDFLAGS"
+echo "enable dynarec      $enable_dynarec"
+# echo "ARMv7 optimizations $have_armv7"
+# echo "enable ARM NEON     $have_arm_neon"
+
+echo "# Automatically generated by configure" > $config_mak
+printf "# Configured with:" >> $config_mak
+printf " '%s'" "$0" "$@" >> $config_mak
+echo >> $config_mak
+
+echo "CC = $CC" >> $config_mak
+echo "CXX = $CXX" >> $config_mak
+echo "AS = $AS" >> $config_mak
+echo "CFLAGS += $CFLAGS" >> $config_mak
+echo "ASFLAGS += $ASFLAGS" >> $config_mak
+echo "LDFLAGS += $LDFLAGS" >> $config_mak
+echo "LDLIBS += $MAIN_LDLIBS" >> $config_mak
+echo >> $config_mak
+
+echo "ARCH = $ARCH" >> $config_mak
+echo "PLATFORM = $platform" >> $config_mak
+echo "SOUND_DRIVERS = $sound_drivers" >> $config_mak
+if [ "$have_arm_neon" = "yes" ]; then
+  echo "HAVE_NEON = 1" >> $config_mak
+fi
+if [ "$enable_dynarec" = "yes" ]; then
+  echo "USE_DYNAREC = 1" >> $config_mak
+fi
+
+# use pandora's skin (for now)
+test -e skin || ln -s platform/pandora/skin skin
+
+# vim:shiftwidth=2:expandtab