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dnl Make automake/libtool output more friendly to humans
dnl
dnl SHAVE_INIT([shavedir])
dnl
dnl shavedir: the directory where the shave script is, it defaults to
dnl $(top_builddir)
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 rewrite 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_INIT], [
dnl where can we find the shave scripts?
m4_if([$1],,
[shavedir='$(top_builddir)'],
[shavedir='$(top_builddir)'/$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
AC_SUBST(SHAVE_SAVED_LIBTOOL)
LIBTOOL="\$(SHELL) \$(shavedir)/shave-libtool '\$(SHAVE_SAVED_LIBTOOL)'"
AC_SUBST(LIBTOOL)
dnl substitute cc
SHAVE_SAVED_CC=$CC
SHAVE_SAVED_CXX=$CXX
AC_SUBST(SHAVE_SAVED_CC)
AC_SUBST(SHAVE_SAVED_CXX)
CC="\$(SHELL) \$(shavedir)/shave cc '\$(SHAVE_SAVED_CC)'"
CXX="\$(SHELL) \$(shavedir)/shave cxx '\$(SHAVE_SAVED_CXX)'"
AC_SUBST(CC)
AC_SUBST(CXX)
])
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