[FFmpeg-devel] [PATCH] split-radix FFT

[Loren Merritt]

On Tue, 5 Aug 2008, M?ns Rullg?rd wrote:

> Is "win32" a commonly used name for that object file format?

It is also known as "win32/coff" (as opposed to other subtypes of coff)

>> +        YASMFLAGS="-f ${objformat}64 -DARCH_X86_64"
>
> Is "macho64" a valid object format name?

yes

> I doubt "win3264" is...

right, at which point check_yasm fails. but I can be more explicit.

> [various other changes ...]

done

--Loren Merritt
-------------- next part --------------
>From 2d070605e0c7027cc211cdd40386997bda1d9aa3 Mon Sep 17 00:00:00 2001
From: Loren Merritt <pengvado at akuvian.org>
Date: Sat, 2 Aug 2008 02:13:09 -0600
Subject: [PATCH] yasm buildsystem

---
 common.mak |    7 +++++++
 configure  |   38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 0 deletions(-)

diff --git a/common.mak b/common.mak
index 93176c5..cccd00b 100644
--- a/common.mak
+++ b/common.mak
@@ -8,6 +8,7 @@ ifndef SUBDIR
 vpath %.c $(SRC_DIR)
 vpath %.h $(SRC_DIR)
 vpath %.S $(SRC_DIR)
+vpath %.asm $(SRC_DIR)
 
 ifeq ($(SRC_DIR),$(SRC_PATH_BARE))
 BUILD_ROOT_REL = .
@@ -96,6 +97,12 @@ $(SUBDIR)%-test.o: $(SUBDIR)%.c
 $(SUBDIR)%-test.o: $(SUBDIR)%-test.c
 	$(CC) $(CFLAGS) -DTEST -c -o $$@ $$^
 
+$(SUBDIR)i386/%.o: $(SUBDIR)i386/%.asm
+	$(YASM) $(YASMFLAGS) -I $$(<D)/ -o $$@ $$<
+
+$(SUBDIR)i386/%.d: $(SUBDIR)i386/%.asm
+	$(YASM) $(YASMFLAGS) -I $$(<D)/ -M -o $$(@:%.d=%.o) $$< > $$@
+
 clean::
 	rm -f $(TESTS) $(addprefix $(SUBDIR),$(CLEANFILES) $(CLEANSUFFIXES) $(LIBSUFFIXES)) \
 	    $(addprefix $(SUBDIR), $(foreach suffix,$(CLEANSUFFIXES),$(addsuffix /$(suffix),$(DIRS))))
diff --git a/configure b/configure
index 564ff03..a955592 100755
--- a/configure
+++ b/configure
@@ -444,6 +444,14 @@ int foo(void){ asm volatile($asm); }
 EOF
 }
 
+check_yasm(){
+    log check_yasm "$@"
+    echo "$1" > $TMPS
+    log_file $TMPS
+    shift 1
+    check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
+}
+
 check_ld(){
     log check_ld "$@"
     check_cc || return
@@ -778,6 +786,7 @@ HAVE_LIST="
     termios_h
     threads
     winsock2_h
+    yasm
 "
 
 CMDLINE_SELECT="
@@ -829,6 +838,7 @@ mmx2_deps="x86 mmx"
 neon_deps="armv4l"
 ssse3_deps="x86"
 vis_deps="sparc"
+yasm_deps="x86 mmx"
 
 # system headers and functions
 byteswap_h_deps="!armv4l"
@@ -927,12 +937,14 @@ shlibdir_default="$libdir_default"
 
 # toolchain
 cc="gcc"
+yasmexe="yasm"
 ar="ar"
 nm="nm"
 ranlib="ranlib"
 strip="strip"
 asmalign_pot="unknown"
 ln_s="ln -sf"
+objformat="elf"
 
 # machine
 arch=`uname -m`
@@ -1089,6 +1101,7 @@ echo "# $0 $@" > $logfile
 set >> $logfile
 
 cc="${cross_prefix}${cc}"
+yasmexe="${cross_prefix}${yasmexe}"
 ar="${cross_prefix}${ar}"
 nm="${cross_prefix}${nm}"
 ranlib="${cross_prefix}${ranlib}"
@@ -1243,6 +1256,7 @@ case $target_os in
         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
         FFSERVERLDFLAGS=-Wl,-bind_at_load
+        objformat="macho"
         ;;
     mingw32*)
         target_os=mingw32
@@ -1269,6 +1283,7 @@ case $target_os in
             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"'
         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
+        objformat="win32"
         ;;
     cygwin*)
         target_os=cygwin
@@ -1285,12 +1300,14 @@ case $target_os in
         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
         SHFLAGS='-shared -Wl,--enable-auto-image-base'
+        objformat="win32"
         ;;
     *-dos|freedos|opendos)
         disable ffplay ffserver vhook
         disable $INDEV_LIST $OUTDEV_LIST
         network_extralibs="-lsocket"
         EXESUF=".exe"
+        objformat="win32"
         ;;
     linux)
         LDLATEFLAGS="-Wl,--as-needed $LDLATEFLAGS"
@@ -1534,6 +1551,25 @@ EOF
     enabled mmx2  && check_asm mmx2  '"movss %xmm0, %xmm0"'
 
     check_asm bswap '"bswap %%eax" ::: "%eax"'
+
+    enable yasm
+    if enabled x86_64; then
+        YASMFLAGS="-DARCH_X86_64"
+        enabled shared && append YASMFLAGS "-DPIC"
+        case "$objformat" in
+            elf) objformat="elf64";;
+            macho) objformat="macho64";;
+            win32) disable yasm;;
+        esac
+    else
+        YASMFLAGS="-DARCH_X86_32"
+    fi
+    append YASMFLAGS "-f $objformat"
+    case "$objformat" in
+        elf*) enabled debug && append YASMFLAGS "-g dwarf2";;
+        *) append YASMFLAGS "-DPREFIX";;
+    esac
+    check_yasm "pabsw xmm0, xmm0" || disable yasm
 fi
 
 # check for assembler specific support
@@ -2028,6 +2064,7 @@ echo "INCDIR=\$(DESTDIR)$incdir" >> config.mak
 echo "BINDIR=\$(DESTDIR)$bindir" >> config.mak
 echo "MANDIR=\$(DESTDIR)$mandir" >> config.mak
 echo "CC=$cc" >> config.mak
+echo "YASM=$yasmexe" >> config.mak
 echo "AR=$ar" >> config.mak
 echo "RANLIB=$ranlib" >> config.mak
 echo "LN_S=$ln_s" >> config.mak
@@ -2040,6 +2077,7 @@ echo "VHOOKCFLAGS=$VHOOKCFLAGS" >> config.mak
 echo "LDFLAGS=$LDFLAGS" >> config.mak
 echo "FFSERVERLDFLAGS=$FFSERVERLDFLAGS" >> config.mak
 echo "SHFLAGS=$SHFLAGS" >> config.mak
+echo "YASMFLAGS=$YASMFLAGS" >> config.mak
 echo "VHOOKSHFLAGS=$VHOOKSHFLAGS" >> config.mak
 echo "VHOOKLIBS=$VHOOKLIBS" >> config.mak
 echo "LIBOBJFLAGS=$LIBOBJFLAGS" >> config.mak
-- 
1.5.5.1