# HG changeset patch
# User Rik <rik@octave.org>
# Date 1361926353 28800
# Node ID 43e6415393ffdd5e917f062a6fc55e172835871a
# Parent  e125db98263f26c33854f48e34727dd6cb41c440
build: check for grep in configure and then use it in build process.

* configure.ac: Add call to AC_PROG_GREP.

* build-aux/common.mk: substitute environment variable GREP with
value from configure.  Use $(GREP) in commands.

* build-aux/find-files-with-tests.sh: use $(GREP) instead of
grep in commands.

diff -r e125db98263f -r 43e6415393ff build-aux/common.mk
--- a/build-aux/common.mk	Tue Feb 26 15:22:12 2013 -0800
+++ b/build-aux/common.mk	Tue Feb 26 16:52:33 2013 -0800
@@ -3,12 +3,15 @@
 AWK = @AWK@
 export AWK
 
-SED = @SED@
-export SED
+GREP = @GREP@
+export GREP
 
 FIND = @FIND@
 export FIND
 
+SED = @SED@
+export SED
+
 PERL = @PERL@
 export PERL
 
@@ -731,7 +734,7 @@
 endef
 
 define test-file-commands
-( echo "## DO NOT EDIT!  Generated automatically from $(<F) by Make."; grep '^%!' $< ) > $@-t
+( echo "## DO NOT EDIT!  Generated automatically from $(<F) by Make."; $(GREP) '^%!' $< ) > $@-t
 mv $@-t $@
 endef
 
diff -r e125db98263f -r 43e6415393ff build-aux/find-files-with-tests.sh
--- a/build-aux/find-files-with-tests.sh	Tue Feb 26 15:22:12 2013 -0800
+++ b/build-aux/find-files-with-tests.sh	Tue Feb 26 16:52:33 2013 -0800
@@ -1,6 +1,7 @@
 #! /bin/sh
 
 set -e
+GREP=${GREP:-grep}
 SED=${SED:-sed}
 
 srcdir="$1"
@@ -13,7 +14,7 @@
   else
     file="$srcdir/$arg"
   fi
-  if [ "`grep -l '^%!' $file`" ]; then
+  if [ "`$GREP -l '^%!' $file`" ]; then
     echo "$file" | $SED "s,\\$srcdir/,,";
   fi
 done
diff -r e125db98263f -r 43e6415393ff configure.ac
--- a/configure.ac	Tue Feb 26 15:22:12 2013 -0800
+++ b/configure.ac	Tue Feb 26 16:52:33 2013 -0800
@@ -97,6 +97,7 @@
 
 ## Programs used in Makefiles.
 AC_PROG_AWK
+AC_PROG_GREP
 OCTAVE_PROG_FIND
 OCTAVE_PROG_SED
 OCTAVE_PROG_PERL