readd -ko, fix sed

Original commit message from CVS:
readd -ko, fix sed

diff --git a/m4/as-scrub-include.m4 b/m4/as-scrub-include.m4
new file mode 100644 (file)
index 0000000..9e714c9
--- /dev/null
+++ b/m4/as-scrub-include.m4
@@ -0,0 +1,36 @@
+dnl as-scrub-include.m4 0.0.3
+
+dnl autostars m4 macro for scrubbing CFLAGS of system include dirs
+dnl because gcc 3.x complains about including system including dirs
+
+
+dnl Thomas Vander Stichele <thomas at apestaart dot org>
+
+dnl $Id: as-scrub-include.m4,v 1.6 2004/05/24 16:13:27 thomasvs Exp $
+
+dnl This macro uses output of cpp -v and expects it to contain text that 
+dnl looks a little bit like this:
+dnl #include <...> search starts here:
+dnl  /usr/local/include
+dnl  /usr/lib/gcc-lib/i386-redhat-linux/3.2/include
+dnl  /usr/include
+dnl End of search list.
+
+dnl AS_SCRUB_INCLUDE(VAR)
+dnl example
+dnl AS_SCRUB_INCLUDE(CFLAGS)
+dnl will remove all system include dirs from the given CFLAGS
+
+AC_DEFUN([AS_SCRUB_INCLUDE],
+[
+  GIVEN_CFLAGS=$[$1]
+  INCLUDE_DIRS=`echo | cpp -v 2>&1`
+
+  dnl remove everything from this output between the "starts here" and "End of"
+  dnl line
+  INCLUDE_DIRS=`echo $INCLUDE_DIRS | sed -e 's/.*<...> search starts here://' | sed -e 's/End of search list.*//'`
+  for dir in $INCLUDE_DIRS; do
+    GIVEN_CFLAGS=`echo $GIVEN_CFLAGS | sed -e 's#-I$dir ##'`
+  done
+  [$1]=$GIVEN_CFLAGS
+])