1 files changed, 69 insertions, 0 deletions
diff --git a/m4/shave.m4 b/m4/shave.m4
new file mode 100644
index 000000000..44d3908b9
--- /dev/null
+++ b/m4/shave.m4
@@ -0,0 +1,69 @@
+dnl Make automake/libtool output more friendly to humans
+dnl
+dnl SHAVE_INIT([shavedir])
+dnl
+dnl shavedir: the directory where the shave scripts are, it defaults to
+dnl           $(top_builddir)
+dnl
+dnl * SHAVE_INIT should be called late in your configure.(ac|in) file (just
+dnl   before AC_CONFIG_FILE/AC_OUTPUT is perfect.  This macro rewrites CC and
+dnl   LIBTOOL, you don't want the configure tests to have these variables
+dnl   re-defined.
+dnl * This macro requires GNU make's -s option.
+
+AC_DEFUN([SHAVE_INIT],
+[
+  dnl enable/disable shave
+  AC_ARG_ENABLE([shave],
+    AS_HELP_STRING([--enable-shave],
+                   [use shave to make the build pretty [[default=no]]]),,
+    [enable_shave=no])
+
+  if test x"$enable_shave" = xyes; then
+    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/cxx
+    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)
+
+    V=@
+  else
+    V=1
+  fi
+  Q='$(V:1=)'
+  AC_SUBST(V)
+  AC_SUBST(Q)
+])
+
+AC_DEFUN([SHAVE_OUTPUT],
+[
+  if test x"$enable_shave" = xyes; then
+    dnl small workaround to fix libtool itself
+    dnl it's shokingly hard to find a better way, really! wtf...
+    test -f $srcdir/libtool && (tmpfile=`mktemp` && cat $srcdir/libtool | sed "s,^LTCC=.*$,LTCC=\"$SHELL $ac_pwd/shave cc $SHAVE_SAVED_CC\"," > $tmpfile && mv $tmpfile $srcdir/libtool)
+  fi
+
+])