Add shave support

shave tranforms the verbose autotools output into a pretty Kbuild-like
one which makes it easier to spot warnings.

See also
http://damien.lespiau.name/blog/2009/02/18/shave-making-the-autotools-output-sane/
git clone git://git.lespiau.name/shave

By default, shave is disabled and you have to explicitly enable it via
./configure --enable-shave.

Signed-off-by: Rainer Gerhards <[email protected]>

.gitignore

@@ -35,3 +35,5 @@ log
 logfile
 debug
 core.*
+shave
+shave-libtool

configure.ac

@@ -699,6 +699,7 @@ AC_ARG_ENABLE(imtemplate,
 AM_CONDITIONAL(ENABLE_IMTEMPLATE, test x$enable_imtemplate = xyes)
 # end of copy template - be sure to serach for imtemplate to find everything!
 
+SHAVE_INIT
 
 # settings for the omprog output module
 AC_ARG_ENABLE(omprog,
@@ -754,6 +755,8 @@ AM_CONDITIONAL(ENABLE_OMSTDOUT, test x$enable_omstdout = xyes)
 
 
 AC_CONFIG_FILES([Makefile \
+		shave \
+		shave-libtool \
 		runtime/Makefile \
 		tools/Makefile \
 		doc/Makefile \

m4/shave.m4

@@ -0,0 +1,99 @@
+dnl Make automake/libtool output more friendly to humans
+dnl
+dnl Copyright (c) 2009, Damien Lespiau <[email protected]>
+dnl
+dnl Permission is hereby granted, free of charge, to any person
+dnl obtaining a copy of this software and associated documentation
+dnl files (the "Software"), to deal in the Software without
+dnl restriction, including without limitation the rights to use,
+dnl copy, modify, merge, publish, distribute, sublicense, and/or sell
+dnl copies of the Software, and to permit persons to whom the
+dnl Software is furnished to do so, subject to the following
+dnl conditions:
+dnl
+dnl The above copyright notice and this permission notice shall be
+dnl included in all copies or substantial portions of the Software.
+dnl
+dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+dnl EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+dnl OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+dnl NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+dnl HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+dnl WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+dnl FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+dnl OTHER DEALINGS IN THE SOFTWARE.
+dnl
+dnl SHAVE_INIT([shavedir],[default_mode])
+dnl
+dnl shavedir: the directory where the shave scripts are, it defaults to
+dnl           $(top_builddir)
+dnl default_mode: (enable|disable) default shave mode.  This parameter
+dnl               controls shave's behaviour when no option has been
+dnl               given to configure.  It defaults to disable.
+dnl
+dnl * SHAVE_INIT should be called late in your configure.(ac|in) file (just
+dnl   before AC_CONFIG_FILE/AC_OUTPUT is perfect.  This macro rewrites CC and
+dnl   LIBTOOL, you don't want the configure tests to have these variables
+dnl   re-defined.
+dnl * This macro requires GNU make's -s option.
+
+AC_DEFUN([_SHAVE_ARG_ENABLE],
+[
+  AC_ARG_ENABLE([shave],
+    AS_HELP_STRING(
+      [--enable-shave],
+      [use shave to make the build pretty [[default=$1]]]),,
+      [enable_shave=$1]
+    )
+])
+
+AC_DEFUN([SHAVE_INIT],
+[
+  dnl you can tweak the default value of enable_shave
+  m4_if([$2], [enable], [_SHAVE_ARG_ENABLE(yes)], [_SHAVE_ARG_ENABLE(no)])
+
+  if test x"$enable_shave" = xyes; then
+    dnl where can we find the shave scripts?
+    m4_if([$1],,
+      [shavedir="$ac_pwd"],
+      [shavedir="$ac_pwd/$1"])
+    AC_SUBST(shavedir)
+
+    dnl make is now quiet
+    AC_SUBST([MAKEFLAGS], [-s])
+    AC_SUBST([AM_MAKEFLAGS], ['`test -z $V && echo -s`'])
+
+    dnl we need sed
+    AC_CHECK_PROG(SED,sed,sed,false)
+
+    dnl substitute libtool
+    SHAVE_SAVED_LIBTOOL=$LIBTOOL
+    LIBTOOL="${SHELL} ${shavedir}/shave-libtool '${SHAVE_SAVED_LIBTOOL}'"
+    AC_SUBST(LIBTOOL)
+
+    dnl substitute cc/cxx
+    SHAVE_SAVED_CC=$CC
+    SHAVE_SAVED_CXX=$CXX
+    SHAVE_SAVED_FC=$FC
+    SHAVE_SAVED_F77=$F77
+    SHAVE_SAVED_OBJC=$OBJC
+    CC="${SHELL} ${shavedir}/shave cc ${SHAVE_SAVED_CC}"
+    CXX="${SHELL} ${shavedir}/shave cxx ${SHAVE_SAVED_CXX}"
+    FC="${SHELL} ${shavedir}/shave fc ${SHAVE_SAVED_FC}"
+    F77="${SHELL} ${shavedir}/shave f77 ${SHAVE_SAVED_F77}"
+    OBJC="${SHELL} ${shavedir}/shave objc ${SHAVE_SAVED_OBJC}"
+    AC_SUBST(CC)
+    AC_SUBST(CXX)
+    AC_SUBST(FC)
+    AC_SUBST(F77)
+    AC_SUBST(OBJC)
+
+    V=@
+  else
+    V=1
+  fi
+  Q='$(V:1=)'
+  AC_SUBST(V)
+  AC_SUBST(Q)
+])
+

shave-libtool.in

@@ -0,0 +1,109 @@
+#!/bin/sh
+#
+# Copyright (c) 2009, Damien Lespiau <[email protected]>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+# we need sed
+SED=@SED@
+if test -z "$SED" ; then
+SED=sed
+fi
+
+lt_unmangle ()
+{
+   last_result=`echo $1 | $SED -e 's#.libs/##' -e 's#[0-9a-zA-Z_\-\.]*_la-##'`
+}
+
+# the real libtool to use
+LIBTOOL="$1"
+shift
+
+# if 1, don't print anything, the underlaying wrapper will do it
+pass_though=0
+
+# scan the arguments, keep the right ones for libtool, and discover the mode
+preserved_args=
+
+# have we seen the --tag option of libtool in the command line ?
+tag_seen=0
+
+while test "$#" -gt 0; do
+    opt="$1"
+    shift
+
+    case $opt in
+    --mode=*)
+        mode=`echo $opt | $SED -e 's/[-_a-zA-Z0-9]*=//'`
+        preserved_args="$preserved_args $opt"
+        ;;
+    -o)
+        lt_output="$1"
+        preserved_args="$preserved_args $opt"
+	;;
+    --tag=*)
+        tag_seen=1
+        preserved_args="$preserved_args $opt"
+	;;
+    *)
+        preserved_args="$preserved_args $opt"
+        ;;
+      esac
+done
+
+case "$mode" in
+compile)
+    # shave will be called and print the actual CC/CXX/LINK line
+    preserved_args="$preserved_args --shave-mode=$mode"
+    pass_though=1
+    ;;
+link)
+    preserved_args="$preserved_args --shave-mode=$mode"
+    Q="  LINK  "
+    ;;
+*)
+    # let's u
+    # echo "*** libtool: Unimplemented mode: $mode, fill a bug report"
+    ;;
+esac
+
+lt_unmangle "$lt_output"
+output=$last_result
+
+# automake does not add a --tag switch to its libtool invocation when
+# assembling a .s file and rely on libtool to infer the right action based
+# on the compiler name. As shave is using CC to hook a wrapper, libtool gets
+# confused. Let's detect these cases and add a --tag=CC option.
+tag=""
+if test $tag_seen -eq 0 -a x"$mode" = xcompile; then
+    tag="--tag=CC"
+fi
+
+if test -z $V; then
+    if test $pass_though -eq 0; then
+        echo "$Q$output"
+    fi
+    $LIBTOOL --silent $tag $preserved_args
+else
+    echo $LIBTOOL $tag $preserved_args
+    $LIBTOOL $tag $preserved_args
+fi

shave.in

@@ -0,0 +1,102 @@
+#!/bin/sh
+#
+# Copyright (c) 2009, Damien Lespiau <[email protected]>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+# we need sed
+SED=@SED@
+if test -z "$SED" ; then
+SED=sed
+fi
+
+lt_unmangle ()
+{
+   last_result=`echo $1 | $SED -e 's#.libs/##' -e 's#[0-9a-zA-Z_\-\.]*_la-##'`
+}
+
+# the tool to wrap (cc, cxx, ar, ranlib, ..)
+tool="$1"
+shift
+
+# the reel tool (to call)
+REEL_TOOL="$1"
+shift
+
+pass_through=0
+preserved_args=
+while test "$#" -gt 0; do
+    opt="$1"
+    shift
+
+    case $opt in
+    --shave-mode=*)
+        mode=`echo $opt | $SED -e 's/[-_a-zA-Z0-9]*=//'`
+	;;
+    -o)
+        lt_output="$1"
+        preserved_args="$preserved_args $opt"
+	;;
+    *)
+        preserved_args="$preserved_args $opt"
+        ;;
+      esac
+done
+
+# mode=link is handled in the libtool wrapper
+case "$mode,$tool" in
+link,*)
+    pass_through=1
+    ;;
+*,cxx)
+    Q="  CXX   "
+    ;;
+*,cc)
+    Q="  CC    "
+    ;;
+*,fc)
+    Q="  FC    "
+    ;;
+*,f77)
+    Q="  F77   "
+    ;;
+*,objc)
+    Q="  OBJC   "
+    ;;
+*,*)
+    # should not happen
+    Q="  CC    "
+    ;;
+esac
+
+lt_unmangle "$lt_output"
+output=$last_result
+
+if test -z $V; then
+    if test $pass_through -eq 0; then
+        echo "$Q$output"
+    fi
+    $REEL_TOOL $preserved_args
+else
+    echo $REEL_TOOL $preserved_args
+    $REEL_TOOL $preserved_args
+fi