Replace all `` by $(), it is more readable and easier to nest.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29183 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 223 insertions, 223 deletions

diff --git a/configure b/configure
index 202a368005..852f5cfb75 100755
--- a/configure
+++ b/configure
@@ -108,7 +108,7 @@ die () {
 
 # OS test booleans functions
 issystem() {
-  test "`echo $system_name | tr A-Z a-z`" = "`echo $1 | tr A-Z a-z`"
+  test "$(echo $system_name | tr A-Z a-z)" = "$(echo $1 | tr A-Z a-z)"
 }
 aix()       { issystem "AIX"; }
 amigaos()   { issystem "AmigaOS"; }
@@ -192,14 +192,14 @@ echores() {
 #############################################################################
 
 # Check how echo works in this /bin/sh
-case `echo -n` in
+case $(echo -n) in
   -n)	_echo_n=	_echo_c='\c'	;;	# SysV echo
   *)	_echo_n='-n '	_echo_c=	;;	# BSD echo
 esac
 
-msg_lang_all=`echo help/help_mp-??.h help/help_mp-??_??.h | sed -e "s:help/help_mp-\(..\).h:\1:g" -e "s:help/help_mp-\(.....\).h:\1:g"`
-man_lang_all=`echo DOCS/man/??/mplayer.1 DOCS/man/??_??/mplayer.1 | sed -e "s:DOCS/man/\(..\)/mplayer.1:\1:g" -e "s:DOCS/man/\(.._..\)/mplayer.1:\1:g"`
-doc_lang_all=`echo DOCS/xml/??/ DOCS/xml/??_??/ | sed -e "s:DOCS/xml/\(..\)/:\1:g" -e "s:DOCS/xml/\(.._..\)/:\1:g"`
+msg_lang_all=$(echo help/help_mp-??.h help/help_mp-??_??.h | sed -e "s:help/help_mp-\(..\).h:\1:g" -e "s:help/help_mp-\(.....\).h:\1:g")
+man_lang_all=$(echo DOCS/man/??/mplayer.1 DOCS/man/??_??/mplayer.1 | sed -e "s:DOCS/man/\(..\)/mplayer.1:\1:g" -e "s:DOCS/man/\(.._..\)/mplayer.1:\1:g")
+doc_lang_all=$(echo DOCS/xml/??/ DOCS/xml/??_??/ | sed -e "s:DOCS/xml/\(..\)/:\1:g" -e "s:DOCS/xml/\(.._..\)/:\1:g")
 
 show_help(){
 cat << EOF
@@ -526,19 +526,19 @@ _libavutil_so=auto
 _libavcodec_a=auto
 _libamr_nb=auto
 _libamr_wb=auto
-_libavdecoders_all=`sed -n 's/^[^#]*DEC.*(.*, *\(.*\)).*/\1_decoder/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]'`
-_libavdecoders=` echo $_libavdecoders_all | sed -e 's/ LIB[A-Z0-9_]*_DECODER//g' -e s/MPEG4AAC_DECODER//`
-_libavencoders_all=`sed -n 's/^[^#]*ENC.*(.*, *\(.*\)).*/\1_encoder/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]'`
-_libavencoders=` echo $_libavencoders_all | sed 's/ LIB[A-Z0-9_]*_ENCODER//g'`
-_libavparsers_all=`sed -n 's/^[^#]*PARSER.*(.*, *\(.*\)).*/\1_parser/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]'`
+_libavdecoders_all=$(sed -n 's/^[^#]*DEC.*(.*, *\(.*\)).*/\1_decoder/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]')
+_libavdecoders=$(echo $_libavdecoders_all | sed -e 's/ LIB[A-Z0-9_]*_DECODER//g' -e s/MPEG4AAC_DECODER//)
+_libavencoders_all=$(sed -n 's/^[^#]*ENC.*(.*, *\(.*\)).*/\1_encoder/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]')
+_libavencoders=$(echo $_libavencoders_all | sed 's/ LIB[A-Z0-9_]*_ENCODER//g')
+_libavparsers_all=$(sed -n 's/^[^#]*PARSER.*(.*, *\(.*\)).*/\1_parser/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]')
 _libavparsers=$_libavparsers_all
-_libavbsfs_all=`sed -n 's/^[^#]*BSF.*(.*, *\(.*\)).*/\1_bsf/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]'`
+_libavbsfs_all=$(sed -n 's/^[^#]*BSF.*(.*, *\(.*\)).*/\1_bsf/p' libavcodec/allcodecs.c | tr '[a-z]' '[A-Z]')
 _libavbsfs=$_libavbsfs_all
-_libavdemuxers_all=`sed -n 's/^[^#]*DEMUX.*(.*, *\(.*\)).*/\1_demuxer/p' libavformat/allformats.c | tr '[a-z]' '[A-Z]'`
-_libavdemuxers=`echo $_libavdemuxers_all | sed -e 's/ LIB[A-Z0-9_]*_DEMUXER//g' -e s/REDIR_DEMUXER// -e s/RTSP_DEMUXER// -e s/SDP_DEMUXER// -e s/AVISYNTH_DEMUXER// `
-_libavmuxers_all=`sed -n 's/^[^#]*_MUX.*(.*, *\(.*\)).*/\1_muxer/p' libavformat/allformats.c | tr '[a-z]' '[A-Z]'`
-_libavmuxers=`echo $_libavmuxers_all | sed -e 's/ LIB[A-Z0-9_]*_MUXER//g' -e s/RTP_MUXER// `
-_libavprotocols_all=`sed -n 's/^[^#]*PROTOCOL.*(.*, *\(.*\)).*/\1_protocol/p' libavformat/allformats.c | tr '[a-z]' '[A-Z]'`
+_libavdemuxers_all=$(sed -n 's/^[^#]*DEMUX.*(.*, *\(.*\)).*/\1_demuxer/p' libavformat/allformats.c | tr '[a-z]' '[A-Z]')
+_libavdemuxers=$(echo $_libavdemuxers_all | sed -e 's/ LIB[A-Z0-9_]*_DEMUXER//g' -e s/REDIR_DEMUXER// -e s/RTSP_DEMUXER// -e s/SDP_DEMUXER// -e s/AVISYNTH_DEMUXER//)
+_libavmuxers_all=$(sed -n 's/^[^#]*_MUX.*(.*, *\(.*\)).*/\1_muxer/p' libavformat/allformats.c | tr '[a-z]' '[A-Z]')
+_libavmuxers=$(echo $_libavmuxers_all | sed -e 's/ LIB[A-Z0-9_]*_MUXER//g' -e s/RTP_MUXER//)
+_libavprotocols_all=$(sed -n 's/^[^#]*PROTOCOL.*(.*, *\(.*\)).*/\1_protocol/p' libavformat/allformats.c | tr '[a-z]' '[A-Z]')
 _libavcodec_so=auto
 _libavformat_a=auto
 _libavformat_so=auto
@@ -738,113 +738,113 @@ for ac_option do
     show_help
     ;;
   --prefix=*)
-    _prefix=`echo $ac_option | cut -d '=' -f 2`
+    _prefix=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --bindir=*)
-    _bindir=`echo $ac_option | cut -d '=' -f 2`
+    _bindir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --datadir=*)
-    _datadir=`echo $ac_option | cut -d '=' -f 2`
+    _datadir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --mandir=*)
-    _mandir=`echo $ac_option | cut -d '=' -f 2`
+    _mandir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --confdir=*)
-    _confdir=`echo $ac_option | cut -d '=' -f 2`
+    _confdir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --libdir=*)
-    _libdir=`echo $ac_option | cut -d '=' -f 2`
+    _libdir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --codecsdir=*)
-    _codecsdir=`echo $ac_option | cut -d '=' -f 2`
+    _codecsdir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --win32codecsdir=*)
-    _win32codecsdir=`echo $ac_option | cut -d '=' -f 2`
+    _win32codecsdir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --xanimcodecsdir=*)
-    _xanimcodecsdir=`echo $ac_option | cut -d '=' -f 2`
+    _xanimcodecsdir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --realcodecsdir=*)
-    _realcodecsdir=`echo $ac_option | cut -d '=' -f 2`
+    _realcodecsdir=$(echo $ac_option | cut -d '=' -f 2)
     ;;
 
   --with-install=*)
-    _install=`echo $ac_option | cut -d '=' -f 2 `
+    _install=$(echo $ac_option | cut -d '=' -f 2 )
     ;;
   --with-xvmclib=*)
-    _xvmclib=`echo $ac_option | cut -d '=' -f 2`
+    _xvmclib=$(echo $ac_option | cut -d '=' -f 2)
     ;;
 
   --with-sdl-config=*)
-    _sdlconfig=`echo $ac_option | cut -d '=' -f 2`
+    _sdlconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --with-freetype-config=*)
-    _freetypeconfig=`echo $ac_option | cut -d '=' -f 2`
+    _freetypeconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --with-fribidi-config=*)
-    _fribidiconfig=`echo $ac_option | cut -d '=' -f 2`
+    _fribidiconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --with-gtk-config=*)
-    _gtkconfig=`echo $ac_option | cut -d '=' -f 2`
+    _gtkconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --with-glib-config=*)
-    _glibconfig=`echo $ac_option | cut -d '=' -f 2`
+    _glibconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --with-dvdnav-config=*)
-    _dvdnavconfig=`echo $ac_option | cut -d '=' -f 2`
+    _dvdnavconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --with-dvdread-config=*)
-    _dvdreadconfig=`echo $ac_option | cut -d '=' -f 2`
+    _dvdreadconfig=$(echo $ac_option | cut -d '=' -f 2)
     ;;
 
   --extra-cflags=*)
-    extra_cflags=`echo $ac_option | cut -d '=' -f 2-`
+    extra_cflags=$(echo $ac_option | cut -d '=' -f 2-)
     ;;
   --extra-ldflags=*)
-    extra_ldflags=`echo $ac_option | cut -d '=' -f 2-`
+    extra_ldflags=$(echo $ac_option | cut -d '=' -f 2-)
     ;;
   --extra-libs=*)
-    extra_libs=`echo $ac_option | cut -d '=' -f 2`
+    extra_libs=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --extra-libs-mplayer=*)
-    libs_mplayer=`echo $ac_option | cut -d '=' -f 2`
+    libs_mplayer=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --extra-libs-mencoder=*)
-    libs_mencoder=`echo $ac_option | cut -d '=' -f 2`
+    libs_mencoder=$(echo $ac_option | cut -d '=' -f 2)
     ;;
 
   --target=*)
-    _target=`echo $ac_option | cut -d '=' -f 2`
+    _target=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --cc=*)
-    _cc=`echo $ac_option | cut -d '=' -f 2`
+    _cc=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --host-cc=*)
-    _host_cc=`echo $ac_option | cut -d '=' -f 2`
+    _host_cc=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --as=*)
-    _as=`echo $ac_option | cut -d '=' -f 2`
+    _as=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --nm=*)
-    _nm=`echo $ac_option | cut -d '=' -f 2`
+    _nm=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --yasm=*)
-    _yasm=`echo $ac_option | cut -d '=' -f 2`
+    _yasm=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --ar=*)
-    _ar=`echo $ac_option | cut -d '=' -f 2`
+    _ar=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --ranlib=*)
-    _ranlib=`echo $ac_option | cut -d '=' -f 2`
+    _ranlib=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --windres=*)
-    _windres=`echo $ac_option | cut -d '=' -f 2`
+    _windres=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --charset=*)
-    _charset=`echo $ac_option | cut -d '=' -f 2`
+    _charset=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --language=*)
-    _language=`echo $ac_option | cut -d '=' -f 2`
+    _language=$(echo $ac_option | cut -d '=' -f 2)
     ;;
 
   --enable-static)
@@ -863,7 +863,7 @@ for ac_option do
     _debug='-g'
     ;;
   --enable-debug=*)
-    _debug=`echo $_echo_n '-g'$_echo_c; echo $ac_option | cut -d '=' -f 2`
+    _debug=$(echo $_echo_n '-g'$_echo_c; echo $ac_option | cut -d '=' -f 2)
     ;;
   --disable-debug)
     _debug=
@@ -1089,7 +1089,7 @@ for ac_option do
   --enable-vidix)	_vidix=yes	;;
   --disable-vidix)	_vidix=no	;;
   --with-vidix-drivers=*)
-    _vidix_drivers=`echo $ac_option | cut -d '=' -f 2`
+    _vidix_drivers=$(echo $ac_option | cut -d '=' -f 2)
     ;;
   --disable-vidix-pcidb)        _vidix_pcidb=no         ;;
   --enable-dhahelper)	_dhahelper=yes	;;
@@ -1124,16 +1124,16 @@ for ac_option do
   --disable-libamr_nb)	_libamr_nb=no	;;
   --enable-libamr_wb)	_libamr_wb=yes	;;
   --disable-libamr_wb)	_libamr_wb=no	;;
-  --enable-decoder=*)	_libavdecoders="$_libavdecoders `echo $ac_option | cut -d '=' -f 2`" ;;
-  --disable-decoder=*)	_libavdecoders=`echo $_libavdecoders | sed "s/\`echo $ac_option | cut -d '=' -f 2\`//g"` ;;
-  --enable-encoder=*)	_libavencoders="$_libavencoders `echo $ac_option | cut -d '=' -f 2`" ;;
-  --disable-encoder=*)	_libavencoders=`echo $_libavencoders | sed "s/\`echo $ac_option | cut -d '=' -f 2\`//g"` ;;
-  --enable-parser=*)	_libavparsers="$_libavparsers `echo $ac_option | cut -d '=' -f 2`" ;;
-  --disable-parser=*)	_libavparsers=`echo $_libavparsers | sed "s/\`echo $ac_option | cut -d '=' -f 2\`//g"` ;;
-  --enable-demuxer=*)	_libavdemuxers="$_libavdemuxers `echo $ac_option | cut -d '=' -f 2`" ;;
-  --disable-demuxer=*)	_libavdemuxers=`echo $_libavdemuxers | sed "s/\`echo $ac_option | cut -d '=' -f 2\`//g"` ;;
-  --enable-muxer=*)	_libavmuxers="$_libavmuxers `echo $ac_option | cut -d '=' -f 2`" ;;
-  --disable-muxer=*)	_libavmuxers=`echo $_libavmuxers | sed "s/\`echo $ac_option | cut -d '=' -f 2\`//g"` ;;
+  --enable-decoder=*)	_libavdecoders="$_libavdecoders $(echo $ac_option | cut -d '=' -f 2)" ;;
+  --disable-decoder=*)	_libavdecoders=$(echo $_libavdecoders | sed "s/$(echo $ac_option | cut -d '=' -f 2)//g") ;;
+  --enable-encoder=*)	_libavencoders="$_libavencoders $(echo $ac_option | cut -d '=' -f 2)" ;;
+  --disable-encoder=*)	_libavencoders=$(echo $_libavencoders | sed "s/$(echo $ac_option | cut -d '=' -f 2)//g") ;;
+  --enable-parser=*)	_libavparsers="$_libavparsers $(echo $ac_option | cut -d '=' -f 2)" ;;
+  --disable-parser=*)	_libavparsers=$(echo $_libavparsers | sed "s/$(echo $ac_option | cut -d '=' -f 2)//g") ;;
+  --enable-demuxer=*)	_libavdemuxers="$_libavdemuxers $(echo $ac_option | cut -d '=' -f 2)" ;;
+  --disable-demuxer=*)	_libavdemuxers=$(echo $_libavdemuxers | sed "s/$(echo $ac_option | cut -d '=' -f 2)//g") ;;
+  --enable-muxer=*)	_libavmuxers="$_libavmuxers $(echo $ac_option | cut -d '=' -f 2)" ;;
+  --disable-muxer=*)	_libavmuxers=$(echo $_libavmuxers | sed "s/$(echo $ac_option | cut -d '=' -f 2)//g") ;;
   --enable-libavformat_a)	_libavformat_a=yes	;;
   --disable-libavformat_a)	_libavformat_a=no	;;
   --enable-libavformat_so)	_libavformat_so=yes	;;
@@ -1315,7 +1315,7 @@ test -z "$_libdir" && _libdir="$_prefix/lib"
 # Determine our OS name and CPU architecture
 if test -z "$_target" ; then
   # OS name
-  system_name=`uname -s 2>&1`
+  system_name=$(uname -s 2>&1)
   case "$system_name" in
   Linux|FreeBSD|NetBSD|OpenBSD|DragonFly|BSD/OS|Darwin|SunOS|QNX|GNU|BeOS|MorphOS|AIX|AmigaOS)
     ;;
@@ -1344,7 +1344,7 @@ if test -z "$_target" ; then
 
 
   # host's CPU/instruction set
-   host_arch=`uname -p 2>&1`
+   host_arch=$(uname -p 2>&1)
    case "$host_arch" in
    i386|sparc|ppc|alpha|arm|mips|vax)
      ;;
@@ -1358,7 +1358,7 @@ if test -z "$_target" ; then
       # recognize.
 
       # x86/x86pc is used by QNX
-      case "`uname -m 2>&1`" in
+      case "$(uname -m 2>&1)" in
       i[3-9]86*|x86|x86pc|k5|k6|k6_2|k6_3|k6-2|k6-3|pentium*|athlon*|i586_i686|i586-i686|BePC) host_arch=i386 ;;
       ia64) host_arch=ia64 ;;
       x86_64|amd64)
@@ -1386,8 +1386,8 @@ if test -z "$_target" ; then
     ;;
   esac
 else # if test -z "$_target"
-  system_name=`echo $_target | cut -d '-' -f 2`
-  case "`echo $system_name | tr A-Z a-z`" in
+  system_name=$(echo $_target | cut -d '-' -f 2)
+  case "$(echo $system_name | tr A-Z a-z)" in
     linux) system_name=Linux ;;
     freebsd) system_name=FreeBSD ;;
     gnu/kfreebsd) system_name=FreeBSD ;;
@@ -1402,9 +1402,9 @@ else # if test -z "$_target"
     mingw32msvc) system_name=MINGW32 ;;
   esac
   # We need to convert underscores so that values like k6-2 and pentium-mmx can be passed
-  host_arch=`echo $_target | cut -d '-' -f 1`
-  if test `echo $host_arch` != "x86_64" ; then
-    host_arch=`echo $host_arch | tr '_' '-'`
+  host_arch=$(echo $_target | cut -d '-' -f 1)
+  if test $(echo $host_arch) != "x86_64" ; then
+    host_arch=$(echo $host_arch | tr '_' '-')
   fi
 fi
 
@@ -1501,12 +1501,12 @@ echo >> "$TMPLOG"
 # Check how to call 'head' and 'tail'. Newer versions spit out warnings
 # if used as 'head -1' instead of 'head -n 1', but older versions don't
 # know about '-n'.
-if test "`(echo line1 ; echo line2) | head -1 2>/dev/null`" = "line1" ; then
+if test "$((echo line1 ; echo line2) | head -1 2>/dev/null)" = "line1" ; then
   _head() { head -$1 2>/dev/null ; }
 else
   _head() { head -n $1 2>/dev/null ; }
 fi
-if test "`(echo line1 ; echo line2) | tail -1 2>/dev/null`" = "line2" ; then
+if test "$((echo line1 ; echo line2) | tail -1 2>/dev/null)" = "line2" ; then
   _tail() { tail -$1 2>/dev/null ; }
 else
   _tail() { tail -n $1 2>/dev/null ; }
@@ -1514,13 +1514,13 @@ fi
 
 # Checking CC version...
 # Intel C++ Compilers (no autoselect, use CC=/some/binary ./configure)
-if test "`basename $_cc`" = "icc" || test "`basename $_cc`" = "ecc"; then
+if test "$(basename $_cc)" = "icc" || test "$(basename $_cc)" = "ecc"; then
   echocheck "$_cc version"
   cc_vendor=intel
-  cc_name=`$_cc -V 2>&1 | _head 1 | cut -d ',' -f 1`
-  cc_version=`$_cc -V 2>&1 | _head 1 | cut -d ',' -f 2 | cut -d ' ' -f 3`
-  _cc_major=`echo $cc_version | cut -d '.' -f 1`
-  _cc_minor=`echo $cc_version | cut -d '.' -f 2`
+  cc_name=$($_cc -V 2>&1 | _head 1 | cut -d ',' -f 1)
+  cc_version=$($_cc -V 2>&1 | _head 1 | cut -d ',' -f 2 | cut -d ' ' -f 3)
+  _cc_major=$(echo $cc_version | cut -d '.' -f 1)
+  _cc_minor=$(echo $cc_version | cut -d '.' -f 2)
   # TODO verify older icc/ecc compatibility
   case $cc_version in
     '')
@@ -1538,20 +1538,20 @@ if test "`basename $_cc`" = "icc" || test "`basename $_cc`" = "ecc"; then
   echores "$cc_version"
 else
   for _cc in "$_cc" cc gcc ; do
-    cc_name_tmp=`$_cc -v 2>&1 | _tail 1 | cut -d ' ' -f 1`
+    cc_name_tmp=$($_cc -v 2>&1 | _tail 1 | cut -d ' ' -f 1)
     if test "$cc_name_tmp" = "gcc"; then
     cc_name=$cc_name_tmp
     echocheck "$_cc version"
     cc_vendor=gnu
-    cc_version=`$_cc -dumpversion 2>&1`
+    cc_version=$($_cc -dumpversion 2>&1)
     case $cc_version in
       2.96*)
         cc_fail=yes
         ;;
       *)
-        _cc_major=`echo $cc_version | cut -d '.' -f 1`
-        _cc_minor=`echo $cc_version | cut -d '.' -f 2`
-        _cc_mini=`echo $cc_version | cut -d '.' -f 3`
+        _cc_major=$(echo $cc_version | cut -d '.' -f 1)
+        _cc_minor=$(echo $cc_version | cut -d '.' -f 2)
+        _cc_mini=$(echo $cc_version | cut -d '.' -f 3)
         ;;
     esac
     echores "$cc_version"
@@ -1586,12 +1586,12 @@ fi
 # now that we know what compiler should be used for compilation, try to find
 # out which assembler is used by the $_cc compiler
 if test "$_as" = auto ; then
-  _as=`$_cc -print-prog-name=as`
+  _as=$($_cc -print-prog-name=as)
   test -z "$_as" && _as=as
 fi
 
 if test "$_nm" = auto ; then
-  _nm=`$_cc -print-prog-name=nm`
+  _nm=$($_cc -print-prog-name=nm)
   test -z "$_nm" && _nm=nm
 fi
 
@@ -1624,16 +1624,16 @@ fi
 
 if x86 ; then
   # gather more CPU information
-  pname=`$_cpuinfo | grep 'model name' | cut -d ':' -f 2 | _head 1`
-  pvendor=`$_cpuinfo | grep 'vendor_id' | cut -d ':' -f 2  | cut -d ' ' -f 2 | _head 1`
-  pfamily=`$_cpuinfo | grep 'cpu family' | cut -d ':' -f 2 | cut -d ' ' -f 2 | _head 1`
-  pmodel=`$_cpuinfo | grep -v 'model name' | grep 'model' | cut -d ':' -f 2 | cut -d ' ' -f 2 | _head 1`
-  pstepping=`$_cpuinfo | grep 'stepping' | cut -d ':' -f 2 | cut -d ' ' -f 2 | _head 1`
+  pname=$($_cpuinfo | grep 'model name' | cut -d ':' -f 2 | _head 1)
+  pvendor=$($_cpuinfo | grep 'vendor_id' | cut -d ':' -f 2  | cut -d ' ' -f 2 | _head 1)
+  pfamily=$($_cpuinfo | grep 'cpu family' | cut -d ':' -f 2 | cut -d ' ' -f 2 | _head 1)
+  pmodel=$($_cpuinfo | grep -v 'model name' | grep 'model' | cut -d ':' -f 2 | cut -d ' ' -f 2 | _head 1)
+  pstepping=$($_cpuinfo | grep 'stepping' | cut -d ':' -f 2 | cut -d ' ' -f 2 | _head 1)
 
-  exts=`$_cpuinfo | egrep 'features|flags' | cut -d ':' -f 2 | _head 1`
+  exts=$($_cpuinfo | egrep 'features|flags' | cut -d ':' -f 2 | _head 1)
 
-  pparam=`echo $exts | sed -e s/k6_mtrr/mtrr/ -e s/cyrix_arr/mtrr/ -e s/centaur_mcr/mtrr/ \
-                           -e s/xmm/sse/ -e s/kni/sse/`
+  pparam=$(echo $exts | sed -e s/k6_mtrr/mtrr/ -e s/cyrix_arr/mtrr/ -e s/centaur_mcr/mtrr/ \
+                            -e s/xmm/sse/ -e s/kni/sse/)
 
   for ext in $pparam ; do
     eval test \"\$_$ext\" = auto 2>/dev/null && eval _$ext=kernel_check
@@ -2047,8 +2047,8 @@ EOF
       def_fast_64bit='#define HAVE_FAST_64BIT 1'
     elif sunos ; then
 	echocheck "CPU type"
-	karch=`uname -m`
-	case "`echo $karch`" in
+	karch=$(uname -m)
+	case "$(echo $karch)" in
 	    sun4) proc=v7 ;;
 	    sun4c) proc=v7 ;;
 	    sun4d) proc=v8 ;;
@@ -2097,15 +2097,15 @@ EOF
     echocheck "CPU type"
     case $system_name in
       Linux)
-	proc=`$_cpuinfo | grep 'cpu' | cut -d ':' -f 2 | cut -d ',' -f 1 | cut -b 2- | _head 1`
-	if test -n "`$_cpuinfo | grep altivec`"; then
+	proc=$($_cpuinfo | grep 'cpu' | cut -d ':' -f 2 | cut -d ',' -f 1 | cut -b 2- | _head 1)
+	if test -n "$($_cpuinfo | grep altivec)"; then
 	    test $_altivec = auto && _altivec=yes
 	fi
         ;;
       Darwin)
-	proc=`$_cpuinfo | grep "Processor type" | cut -f 3 -d ' ' | sed 's/ppc//'`
-	if [ `sysctl -n hw.vectorunit` -eq 1 -o \
-	    "`sysctl -n hw.optional.altivec 2> /dev/null`" = "1" ]; then
+	proc=$($_cpuinfo | grep "Processor type" | cut -f 3 -d ' ' | sed 's/ppc//')
+	if [ $(sysctl -n hw.vectorunit) -eq 1 -o \
+	    "$(sysctl -n hw.optional.altivec 2> /dev/null)" = "1" ]; then
 	    test $_altivec = auto && _altivec=yes
 	fi
         ;;
@@ -2115,14 +2115,14 @@ EOF
 	    2*|3.0*|3.1*|3.2*|3.3*)
 		;;
 	    *)
-		if [ `sysctl -n machdep.altivec` -eq 1 ]; then
+		if [ $(sysctl -n machdep.altivec) -eq 1 ]; then
 		    test $_altivec = auto && _altivec=yes
 		fi
 		;;
 	esac
         ;;
       AIX)
-	proc=`$_cpuinfo | grep 'type' | cut -f 2 -d ' ' | sed 's/PowerPC_//'`
+	proc=$($_cpuinfo | grep 'type' | cut -f 2 -d ' ' | sed 's/PowerPC_//')
 	;;
     esac
     if test "$_altivec" = yes; then
@@ -2188,7 +2188,7 @@ EOF
     fi
 
     if test -n "$_mcpu"; then
-        _optimizing=`echo $_mcpu | cut -c 8-`
+        _optimizing=$(echo $_mcpu | cut -c 8-)
         echores "$_optimizing"
     else
         echores "none"
@@ -2212,7 +2212,7 @@ int main(void) {
 }
 EOF
     $_cc -o "$TMPEXE" "$TMPC"
-    case `"$TMPEXE"` in
+    case $("$TMPEXE") in
 
         0-0)    proc="ev4";   _mvi="0";;
         1-0)    proc="ev5";   _mvi="0";;
@@ -2244,8 +2244,8 @@ EOF
 
     if irix ; then
 	echocheck "CPU type"
-	proc=`hinv -c processor | grep CPU | cut -d " " -f3`
-	case "`echo $proc`" in
+	proc=$(hinv -c processor | grep CPU | cut -d " " -f3)
+	case "$(echo $proc)" in
 	    R3000) _march='-mips1' _mcpu='-mtune=r2000' ;;
 	    R4000) _march='-mips3' _mcpu='-mtune=r4000' ;;
 	    R4400) _march='-mips3' _mcpu='-mtune=r4400' ;;
@@ -2449,7 +2449,7 @@ fi
 if x86_32 ; then
   # Checking assembler (_as) compatibility...
   # Added workaround for older as that reads from stdin by default - atmos
-  as_version=`echo '' | $_as -version 2>&1 | sed -n 's/^.*assembler \(version \)*\([0-9.]*\).*$/\2/p'`
+  as_version=$(echo '' | $_as -version 2>&1 | sed -n 's/^.*assembler \(version \)*\([0-9.]*\).*$/\2/p')
   echocheck "assembler ($_as $as_version)"
 
   _pref_as_version='2.9.1'
@@ -2708,7 +2708,7 @@ test "$_mvi"       = yes && _cpuexts="MVI $_cpuexts"
 # Checking kernel version...
 if x86_32 && linux ; then
   _k_verc_problem=no
-  kernel_version=`uname -r 2>&1`
+  kernel_version=$(uname -r 2>&1)
   echocheck "$system_name kernel version"
   case "$kernel_version" in
     '') kernel_version="?.??"; _k_verc_fail=yes;;
@@ -2779,7 +2779,7 @@ echores "$_langinfo"
 
 echocheck "language"
 test -z "$_language" && _language=$LINGUAS
-_language=`echo $_language | tr , " "`
+_language=$(echo $_language | tr , " ")
 if $(echo $_language | grep -q all) ; then
   doc_lang=en ; doc_langs=$doc_lang_all
   man_lang=en ; man_langs=$man_lang_all
@@ -2801,7 +2801,7 @@ else
       break
     else
       echo ${_echo_n} "$lang not found, ${_echo_c}"
-      _language=`echo $_language | sed "s/$lang *//"`
+      _language=$(echo $_language | sed "s/$lang *//")
     fi
   done
 fi
@@ -2910,10 +2910,10 @@ EOF
 eval _$func=no
 cc_check -D_ISOC99_SOURCE $_ld_lm && eval _$func=yes
 if eval test "x\$_$func" = "xyes"; then
-  eval def_$func="\"#define HAVE_`echo $func | tr '[a-z]' '[A-Z]'` 1\""
+  eval def_$func="\"#define HAVE_$(echo $func | tr '[a-z]' '[A-Z]') 1\""
   echores yes
 else
-  eval def_$func="\"#define HAVE_`echo $func | tr '[a-z]' '[A-Z]'` 0\""
+  eval def_$func="\"#define HAVE_$(echo $func | tr '[a-z]' '[A-Z]') 0\""
   echores no
 fi
 done
@@ -3361,8 +3361,8 @@ echores "$_w32threads"
 echocheck "rpath"
 netbsd &&_rpath=yes
 if test "$_rpath" = yes ; then
-  for I in `echo $extra_ldflags | sed 's/-L//g'` ; do
-    tmp="$tmp ` echo $I | sed 's/.*/ -L& -Wl,-R&/'`"
+  for I in $(echo $extra_ldflags | sed 's/-L//g') ; do
+    tmp="$tmp $(echo $I | sed 's/.*/ -L& -Wl,-R&/')"
   done
 extra_ldflags=$tmp
 fi
@@ -3800,7 +3800,7 @@ if darwin; then
 
 echocheck "Mac OS X APIs"
 if test "$_macosx" = auto ; then
-    productName=`/usr/bin/sw_vers -productName`
+    productName=$(/usr/bin/sw_vers -productName)
     if test "$productName" = "Mac OS X" ||
        test "$productName" = "Mac OS X Server" ; then
         _macosx=yes
@@ -3955,7 +3955,7 @@ fi #if linux
 
 echocheck "pkg-config"
 _pkg_config=pkg-config
-if `$_pkg_config --version > /dev/null 2>&1`; then
+if $($_pkg_config --version > /dev/null 2>&1); then
   if test "$_ld_static"; then
     _pkg_config="$_pkg_config --static"
   fi
@@ -4133,15 +4133,15 @@ dfb_ver = DIRECTFB_MAJOR_VERSION.DIRECTFB_MINOR_VERSION.DIRECTFB_MICRO_VERSION
 ;
 EOF
   if $_cc -E $TMPC $extra_cflags > "$TMPEXE"; then
-    _directfb_version=`sed -n 's/^dfb_ver[^0-9]*\(.*\)/\1/p' "$TMPEXE" | tr -d '()'`
-    _dfb_major=`echo $_directfb_version | cut -d . -f 1`
-    _dfb_minor=`echo $_directfb_version | cut -d . -f 2`
-    _dfb_micro=`echo $_directfb_version | cut -d . -f 3`
-    _dfb_version=`dfb_version $_dfb_major $_dfb_minor $_dfb_micro`
-    if test "$_dfb_version" -ge `dfb_version 0 9 13`; then
+    _directfb_version=$(sed -n 's/^dfb_ver[^0-9]*\(.*\)/\1/p' "$TMPEXE" | tr -d '()')
+    _dfb_major=$(echo $_directfb_version | cut -d . -f 1)
+    _dfb_minor=$(echo $_directfb_version | cut -d . -f 2)
+    _dfb_micro=$(echo $_directfb_version | cut -d . -f 3)
+    _dfb_version=$(dfb_version $_dfb_major $_dfb_minor $_dfb_micro)
+    if test "$_dfb_version" -ge $(dfb_version 0 9 13); then
       def_directfb_version="#define DIRECTFBVERSION $_dfb_version"
       _res_comment="$_directfb_version"
-      test "$_dfb_version" -ge `dfb_version 0 9 15` && _dfbmga=yes
+      test "$_dfb_version" -ge $(dfb_version 0 9 15) && _dfbmga=yes
     else
       def_directfb_version='#undef DIRECTFBVERSION'
       _directfb=no
@@ -4174,7 +4174,7 @@ fi
 echocheck "X11 headers presence"
   _x11_headers="no"
   _res_comment="check if the dev(el) packages are installed"
-  for I in `echo $extra_cflags | sed s/-I//g` /usr/include ; do
+  for I in $(echo $extra_cflags | sed s/-I//g) /usr/include ; do
     if test -f "$I/X11/Xlib.h" ; then
       _x11_headers="yes"
       _res_comment=""
@@ -4206,7 +4206,7 @@ EOF
            -L/usr/X11/lib -L/usr/lib32 -L/usr/openwin/lib -L/usr/X11R6/lib64 \
            -L/usr/lib ; do
     if netbsd; then
-      _ld_tmp="$I -lXext -lX11 $_ld_pthread -Wl,-R`echo $I | sed s/^-L//`"
+      _ld_tmp="$I -lXext -lX11 $_ld_pthread -Wl,-R$(echo $I | sed s/^-L//)"
     else
       _ld_tmp="$I -lXext -lX11 $_ld_pthread"
     fi
@@ -4329,7 +4329,7 @@ if test "$_xvmc" = yes ; then
 else
   def_xvmc='#define CONFIG_XVMC 0'
   _novomodules="xvmc $_novomodules"
-  _libavdecoders=`echo $_libavdecoders | sed -e s/MPEG_XVMC_DECODER// `
+  _libavdecoders=$(echo $_libavdecoders | sed -e s/MPEG_XVMC_DECODER//)
 fi
 echores "$_xvmc"
 
@@ -4351,7 +4351,7 @@ if test "$_vdpau" = yes ; then
 else
   def_vdpau='#define CONFIG_VDPAU 0'
   _novomodules="vdpau $_novomodules"
-  _libavdecoders=`echo $_libavdecoders | sed -e s/MPEG_VDPAU_DECODER// -e s/MPEG1_VDPAU_DECODER// -e s/H264_VDPAU_DECODER// -e s/WMV3_VDPAU_DECODER// -e s/VC1_VDPAU_DECODER//`
+  _libavdecoders=$(echo $_libavdecoders | sed -e s/MPEG_VDPAU_DECODER// -e s/MPEG1_VDPAU_DECODER// -e s/H264_VDPAU_DECODER// -e s/WMV3_VDPAU_DECODER// -e s/VC1_VDPAU_DECODER//)
 fi
 echores "$_vdpau"
 
@@ -4571,14 +4571,14 @@ if test "$_vidix" = yes ; then
   def_vidix='#define CONFIG_VIDIX 1'
   _vomodules="cvidix $_vomodules"
   test "$_vidix_drivers" || _vidix_drivers="cyberblade ivtv mach64 mga mga_crtc2 nvidia pm2 pm3 radeon rage128 s3 sh_veu sis unichrome"
-  test $_ivtv = "yes" || _vidix_drivers=`echo $_vidix_drivers | sed s/ivtv//`
+  test $_ivtv = "yes" || _vidix_drivers=$(echo $_vidix_drivers | sed s/ivtv//)
 
   # some vidix drivers are architecture and os specific, discard them elsewhere
-  x86 || _vidix_drivers=`echo $_vidix_drivers | sed -e s/cyberblade// -e s/sis// -e s/unichrome// -e s/s3//`
-  (test $host_arch = "sh" && linux) || _vidix_drivers=`echo $_vidix_drivers | sed s/sh_veu//`
+  x86 || _vidix_drivers=$(echo $_vidix_drivers | sed -e s/cyberblade// -e s/sis// -e s/unichrome// -e s/s3//)
+  (test $host_arch = "sh" && linux) || _vidix_drivers=$(echo $_vidix_drivers | sed s/sh_veu//)
 
   for driver in $_vidix_drivers ; do
-    uc_driver=`echo $driver | tr '[a-z]' '[A-Z]'`
+    uc_driver=$(echo $driver | tr '[a-z]' '[A-Z]')
     eval _vidix_drv_${driver}=yes
     eval def_vidix_drv_${driver}=\"\#define CONFIG_VIDIX_DRV_${uc_driver} 1\"
   done
@@ -4711,7 +4711,7 @@ fi
 if test "$_aa" = yes ; then
   def_aa='#define CONFIG_AA 1'
   if cygwin ; then
-    libs_mplayer="$libs_mplayer `aalib-config --libs | cut -d " " -f 2,5,6`"
+    libs_mplayer="$libs_mplayer $(aalib-config --libs | cut -d " " -f 2,5,6)"
   fi
   _vomodules="aa $_vomodules"
 else
@@ -4732,13 +4732,13 @@ if test "$_caca" = auto ; then
 #endif
 int main(void) { (void) caca_init(); return 0; }
 EOF
-  cc_check `caca-config --libs` && _caca=yes
+  cc_check $(caca-config --libs) && _caca=yes
   fi
 fi
 if test "$_caca" = yes ; then
   def_caca='#define CONFIG_CACA 1'
-  extra_cflags="$extra_cflags `caca-config --cflags`"
-  libs_mplayer="$libs_mplayer `caca-config --libs`"
+  extra_cflags="$extra_cflags $(caca-config --cflags)"
+  libs_mplayer="$libs_mplayer $(caca-config --libs)"
   _vomodules="caca $_vomodules"
 else
   def_caca='#undef CONFIG_CACA'
@@ -5093,8 +5093,8 @@ int main(void) {
 EOF
   _sdl=no
   if "$_sdlconfig" --version >>"$TMPLOG" 2>&1 ; then
-    if cc_check `$_sdlconfig --cflags` `$_sdlconfig --libs` >>"$TMPLOG" 2>&1 ; then
-      _sdlversion=`$_sdlconfig --version | sed 's/[^0-9]//g'`
+    if cc_check $($_sdlconfig --cflags) $($_sdlconfig --libs) >>"$TMPLOG" 2>&1 ; then
+      _sdlversion=$($_sdlconfig --version | sed 's/[^0-9]//g')
         if test "$_sdlversion" -gt 116 ; then
           if test "$_sdlversion" -lt 121 ; then
             def_sdlbuggy='#define BUGGY_SDL'
@@ -5109,14 +5109,14 @@ fi
 if test "$_sdl" = yes ; then
   def_sdl='#define CONFIG_SDL 1'
   if cygwin ; then
-    libs_mplayer="$libs_mplayer `$_sdlconfig --libs | cut -d " " -f 1,4,6 | sed s/no-cygwin/cygwin/`"
-    extra_cflags="$extra_cflags `$_sdlconfig --cflags | cut -d " " -f 1,5,6 | sed s/no-cygwin/cygwin/`"
+    libs_mplayer="$libs_mplayer $($_sdlconfig --libs | cut -d " " -f 1,4,6 | sed s/no-cygwin/cygwin/)"
+    extra_cflags="$extra_cflags $($_sdlconfig --cflags | cut -d " " -f 1,5,6 | sed s/no-cygwin/cygwin/)"
   elif mingw32 ; then
-    libs_mplayer="$libs_mplayer `$_sdlconfig --libs | sed -e s/-mwindows// -e s/-lmingw32//`"
-    extra_cflags="$extra_cflags `$_sdlconfig --cflags | sed s/-Dmain=SDL_main//`"
+    libs_mplayer="$libs_mplayer $($_sdlconfig --libs | sed -e s/-mwindows// -e s/-lmingw32//)"
+    extra_cflags="$extra_cflags $($_sdlconfig --cflags | sed s/-Dmain=SDL_main//)"
   else
-    libs_mplayer="$libs_mplayer `$_sdlconfig --libs`"
-    extra_cflags="$extra_cflags `$_sdlconfig --cflags | sed s/-D_GNU_SOURCE=1//`"
+    libs_mplayer="$libs_mplayer $($_sdlconfig --libs)"
+    extra_cflags="$extra_cflags $($_sdlconfig --cflags | sed s/-D_GNU_SOURCE=1//)"
   fi
   _vomodules="sdl $_vomodules"
   _aomodules="sdl $_aomodules"
@@ -5388,7 +5388,7 @@ cat > $TMPC << EOF
 #include <artsc.h>
 int main(void) { return 0; }
 EOF
-cc_check `artsc-config --libs` `artsc-config --cflags` && tmp_run && _arts=yes
+cc_check $(artsc-config --libs) $(artsc-config --cflags) && tmp_run && _arts=yes
 
   fi
 fi
@@ -5396,8 +5396,8 @@ fi
 if test "$_arts" = yes ; then
   def_arts='#define CONFIG_ARTS 1'
   _aomodules="arts $_aomodules"
-  libs_mplayer="$libs_mplayer `artsc-config --libs`"
-  extra_cflags="$extra_cflags `artsc-config --cflags`"
+  libs_mplayer="$libs_mplayer $(artsc-config --libs)"
+  extra_cflags="$extra_cflags $(artsc-config --cflags)"
 else
   _noaomodules="arts $_noaomodules"
 fi
@@ -5413,7 +5413,7 @@ cat > $TMPC << EOF
 #include <esd.h>
 int main(void) { int fd = esd_open_sound("test"); return fd; }
 EOF
-cc_check `esd-config --libs` `esd-config --cflags` && _esd=yes
+cc_check $(esd-config --libs) $(esd-config --cflags) && _esd=yes
 
   fi
 fi
@@ -5422,15 +5422,15 @@ echores "$_esd"
 if test "$_esd" = yes ; then
   def_esd='#define CONFIG_ESD 1'
   _aomodules="esd $_aomodules"
-  libs_mplayer="$libs_mplayer `esd-config --libs`"
-  extra_cflags="$extra_cflags `esd-config --cflags`"
+  libs_mplayer="$libs_mplayer $(esd-config --libs)"
+  extra_cflags="$extra_cflags $(esd-config --cflags)"
 
   echocheck "esd_get_latency()"
   cat > $TMPC << EOF
 #include <esd.h>
 int main(void) { return esd_get_latency(0); }
 EOF
-  cc_check `esd-config --libs` `esd-config --cflags` && _esd_latency=yes && def_esd_latency='#define CONFIG_ESD_LATENCY'
+  cc_check $(esd-config --libs) $(esd-config --cflags) && _esd_latency=yes && def_esd_latency='#define CONFIG_ESD_LATENCY'
   echores "$_esd_latency"
 else
   def_esd='#undef CONFIG_ESD'
@@ -5468,7 +5468,7 @@ cat > $TMPC << EOF
 #include <pulse/pulseaudio.h>
 int main(void) { return 0; }
 EOF
-cc_check `$_pkg_config --libs --cflags libpulse` && tmp_run && _pulse=yes
+cc_check $($_pkg_config --libs --cflags libpulse) && tmp_run && _pulse=yes
 
   fi
 fi
@@ -5477,8 +5477,8 @@ echores "$_pulse"
 if test "$_pulse" = yes ; then
   def_pulse='#define CONFIG_PULSE 1'
   _aomodules="pulse $_aomodules"
-  libs_mplayer="$libs_mplayer `$_pkg_config --libs libpulse`"
-  extra_cflags="$extra_cflags `$_pkg_config --cflags libpulse`"
+  libs_mplayer="$libs_mplayer $($_pkg_config --libs libpulse)"
+  extra_cflags="$extra_cflags $($_pkg_config --cflags libpulse)"
 else
   def_pulse='#undef CONFIG_PULSE'
   _noaomodules="pulse $_noaomodules"
@@ -5495,9 +5495,9 @@ int main(void) { jack_client_open("test", JackUseExactName, NULL); return 0; }
 EOF
   if cc_check -ljack ; then
     libs_mplayer="$libs_mplayer -ljack"
-  elif cc_check `$_pkg_config --libs --cflags --silence-errors jack` ; then
-    libs_mplayer="$libs_mplayer `$_pkg_config --libs jack`"
-    extra_cflags="$extra_cflags "`$_pkg_config --cflags jack`""
+  elif cc_check $($_pkg_config --libs --cflags --silence-errors jack) ; then
+    libs_mplayer="$libs_mplayer $($_pkg_config --libs jack)"
+    extra_cflags="$extra_cflags "$($_pkg_config --cflags jack)""
   else
     _jack=no
   fi
@@ -5804,8 +5804,8 @@ elif test "$_dvdread" = auto ; then
 int main(void) { return 0; }
 EOF
   fi
-  _dvdreadcflags=`$_dvdreadconfig --cflags`
-  _dvdreadlibs=`$_dvdreadconfig --libs`
+  _dvdreadcflags=$($_dvdreadconfig --cflags)
+  _dvdreadlibs=$($_dvdreadconfig --libs)
   if cc_check -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE \
     $_dvdreadcflags $_dvdreadlibs $_ld_dl ; then
     _dvdread=yes
@@ -5906,8 +5906,8 @@ EOF
           && _libcdio=yes && extra_ldflags="$extra_ldflags $_ld_tmp" && break
     done
     if test "$_libcdio" = no && $_pkg_config --exists libcdio_paranoia ; then
-      _inc_tmp=`$_pkg_config --cflags libcdio_paranoia`
-      _ld_tmp=`$_pkg_config --libs libcdio_paranoia`
+      _inc_tmp=$($_pkg_config --cflags libcdio_paranoia)
+      _ld_tmp=$($_pkg_config --libs libcdio_paranoia)
       cc_check $_inc_tmp $_ld_tmp $_ld_lm && _libcdio=yes \
         && extra_ldflags="$extra_ldflags $_ld_tmp" && extra_cflags="$extra_cflags $_inc_tmp"
     fi
@@ -5989,15 +5989,15 @@ int main(void) {
 }
 EOF
 	_freetype=no
-	cc_check `$_freetypeconfig --cflags` `$_freetypeconfig --libs` && tmp_run && _freetype=yes
+	cc_check $($_freetypeconfig --cflags) $($_freetypeconfig --libs) && tmp_run && _freetype=yes
     else
 	_freetype=no
     fi
 fi
 if test "$_freetype" = yes ; then
     def_freetype='#define CONFIG_FREETYPE'
-    extra_cflags="$extra_cflags `$_freetypeconfig --cflags`"
-    extra_ldflags="$extra_ldflags `$_freetypeconfig --libs`"
+    extra_cflags="$extra_cflags $($_freetypeconfig --cflags)"
+    extra_ldflags="$extra_ldflags $($_freetypeconfig --libs)"
 else
     def_freetype='#undef CONFIG_FREETYPE'
 fi
@@ -6028,8 +6028,8 @@ EOF
     cc_check $_ld_tmp && _fontconfig=yes && extra_ldflags="$extra_ldflags $_ld_tmp" && break
   done
   if test "$_fontconfig" = no && $_pkg_config --exists fontconfig ; then
-    _inc_tmp=`$_pkg_config --cflags fontconfig`
-    _ld_tmp=`$_pkg_config --libs fontconfig`
+    _inc_tmp=$($_pkg_config --cflags fontconfig)
+    _ld_tmp=$($_pkg_config --libs fontconfig)
     cc_check $_inc_tmp $_ld_tmp && _fontconfig=yes \
       && extra_ldflags="$extra_ldflags $_ld_tmp" && extra_cflags="$extra_cflags $_inc_tmp"
   fi
@@ -6059,7 +6059,7 @@ if test "$_ass" = auto ; then
 int main(void) { return 0; }
 EOF
     _ass=no
-    cc_check `$_freetypeconfig --cflags` `$_freetypeconfig --libs` && tmp_run && _ass=yes
+    cc_check $($_freetypeconfig --cflags) $($_freetypeconfig --libs) && tmp_run && _ass=yes
     if test "$_ass" = no ; then
         _res_comment="FreeType >= 2.1.8 needed"
     fi
@@ -6089,15 +6089,15 @@ int main(void) {
 }
 EOF
 	_fribidi=no
-	cc_check `$_fribidiconfig --cflags` `$_fribidiconfig --libs` && tmp_run && _fribidi=yes
+	cc_check $($_fribidiconfig --cflags) $($_fribidiconfig --libs) && tmp_run && _fribidi=yes
     else
 	_fribidi=no
     fi
 fi
 if test "$_fribidi" = yes ; then
     def_fribidi='#define CONFIG_FRIBIDI'
-    extra_cflags="$extra_cflags `$_fribidiconfig --cflags`"
-    extra_ldflags="$extra_ldflags `$_fribidiconfig --libs`"
+    extra_cflags="$extra_cflags $($_fribidiconfig --cflags)"
+    extra_ldflags="$extra_ldflags $($_fribidiconfig --libs)"
 else
     def_fribidi='#undef CONFIG_FRIBIDI'
 fi
@@ -6140,8 +6140,8 @@ if test "$_zlib" = yes ; then
   extra_ldflags="$extra_ldflags -lz"
 else
   def_zlib='#define CONFIG_ZLIB 0'
-  _libavdecoders=`echo $_libavdecoders | sed -e s/FLASHSV_DECODER// -e s/PNG_DECODER// -e s/ZMBV_DECODER// -e s/DXA_DECODER// -e s/TSCC_DECODER// `
-  _libavencoders=`echo $_libavencoders | sed -e s/FLASHSV_ENCODER// -e s/PNG_ENCODER// -e s/ZMBV_ENCODER// `
+  _libavdecoders=$(echo $_libavdecoders | sed -e s/FLASHSV_DECODER// -e s/PNG_DECODER// -e s/ZMBV_DECODER// -e s/DXA_DECODER// -e s/TSCC_DECODER//)
+  _libavencoders=$(echo $_libavencoders | sed -e s/FLASHSV_ENCODER// -e s/PNG_ENCODER// -e s/ZMBV_ENCODER//)
 fi
 echores "$_zlib"
 
@@ -6772,8 +6772,8 @@ echocheck "Nemesi Streaming Media libraries"
 if test "$_nemesi" = auto  && test "$_network" = yes ; then
     _nemesi=no
     if $_pkg_config libnemesi --atleast-ver