Make sure we check for egrep before we use it.

configure

@@ -311,7 +311,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS WIN16_FILES WIN16_INSTALL build build_cpu build_vendor build_os host host_cpu host_vendor host_os SET_MAKE CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX CPPBIN ac_ct_CPPBIN TOOLSDIR CPP X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS LEX LEXLIB LEX_OUTPUT_ROOT XLEX BISON AS ac_ct_AS LD ac_ct_LD AR ac_ct_AR RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP WINDRES ac_ct_WINDRES LN_S LN LDCONFIG INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LINT LINTFLAGS DB2HTML DB2PDF DB2PS DB2TXT LIBPTHREAD XLIB XFILES OPENGLFILES GLU32FILES OPENGL_LIBS EGREP GLUT_LIBS GLUT32FILES NASLIBS CURSESLIBS sane_devel SANELIBS SANEINCL ICULIBS ft_devel ft_devel2 FREETYPEINCL ARTSCCONFIG ARTSLIBS ARTSINCL ALSALIBS AUDIOIOLIBS CAPI4LINUXLIBS EXTRACFLAGS DLLEXT DLLFLAGS DLLIBS LDSHARED LDDLLFLAGS LIBEXT IMPLIBEXT DLLTOOL ac_ct_DLLTOOL DLLWRAP ac_ct_DLLWRAP LDEXECFLAGS LDLIBWINEFLAGS CROSSTEST CROSSCC CROSSWINDRES LDPATH CRTLIBS WINE_BINARIES MAIN_BINARY LDD ALLOCA LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS WIN16_FILES WIN16_INSTALL build build_cpu build_vendor build_os host host_cpu host_vendor host_os SET_MAKE CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX CPPBIN ac_ct_CPPBIN TOOLSDIR CPP X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS LEX LEXLIB LEX_OUTPUT_ROOT XLEX BISON AS ac_ct_AS LD ac_ct_LD AR ac_ct_AR RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP WINDRES ac_ct_WINDRES LN_S LN EGREP LDCONFIG INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LINT LINTFLAGS DB2HTML DB2PDF DB2PS DB2TXT LIBPTHREAD XLIB XFILES OPENGLFILES GLU32FILES OPENGL_LIBS GLUT_LIBS GLUT32FILES NASLIBS CURSESLIBS sane_devel SANELIBS SANEINCL ICULIBS ft_devel ft_devel2 FREETYPEINCL ARTSCCONFIG ARTSLIBS ARTSINCL ALSALIBS AUDIOIOLIBS CAPI4LINUXLIBS EXTRACFLAGS DLLEXT DLLFLAGS DLLIBS LDSHARED LDDLLFLAGS LIBEXT IMPLIBEXT DLLTOOL ac_ct_DLLTOOL DLLWRAP ac_ct_DLLWRAP LDEXECFLAGS LDLIBWINEFLAGS CROSSTEST CROSSCC CROSSWINDRES LDPATH CRTLIBS WINE_BINARIES MAIN_BINARY LDD ALLOCA LIBOBJS LTLIBOBJS'
 ac_subst_files='MAKE_RULES MAKE_DLL_RULES MAKE_TEST_RULES MAKE_LIB_RULES MAKE_PROG_RULES'
 
 # Initialize some variables set by options.
@@ -5390,6 +5390,21 @@ else
 echo "${ECHO_T}no, using $LN" >&6
 fi
 rm -f conf$$ conf$$.file
+echo "$as_me:$LINENO: checking for egrep" >&5
+echo $ECHO_N "checking for egrep... $ECHO_C" >&6
+if test "${ac_cv_prog_egrep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
+echo "${ECHO_T}$ac_cv_prog_egrep" >&6
+ EGREP=$ac_cv_prog_egrep
+
+
 # Extract the first word of "ldconfig", so it can be a program name with args.
 set dummy ldconfig; ac_word=$2
 echo "$as_me:$LINENO: checking for $ac_word" >&5
@@ -6883,22 +6898,7 @@ then
     ac_save_CPPFLAGS="$CPPFLAGS"
     CPPFLAGS="$CPPFLAGS $X_CFLAGS"
 
-        echo "$as_me:$LINENO: checking for egrep" >&5
-echo $ECHO_N "checking for egrep... $ECHO_C" >&6
-if test "${ac_cv_prog_egrep+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
-    then ac_cv_prog_egrep='grep -E'
-    else ac_cv_prog_egrep='egrep'
-    fi
-fi
-echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
-echo "${ECHO_T}$ac_cv_prog_egrep" >&6
- EGREP=$ac_cv_prog_egrep
-
-
-echo "$as_me:$LINENO: checking for ANSI C header files" >&5
+        echo "$as_me:$LINENO: checking for ANSI C header files" >&5
 echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
 if test "${ac_cv_header_stdc+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
@@ -20826,6 +20826,7 @@ s,@WINDRES@,$WINDRES,;t t
 s,@ac_ct_WINDRES@,$ac_ct_WINDRES,;t t
 s,@LN_S@,$LN_S,;t t
 s,@LN@,$LN,;t t
+s,@EGREP@,$EGREP,;t t
 s,@LDCONFIG@,$LDCONFIG,;t t
 s,@INSTALL_PROGRAM@,$INSTALL_PROGRAM,;t t
 s,@INSTALL_SCRIPT@,$INSTALL_SCRIPT,;t t
@@ -20842,7 +20843,6 @@ s,@XFILES@,$XFILES,;t t
 s,@OPENGLFILES@,$OPENGLFILES,;t t
 s,@GLU32FILES@,$GLU32FILES,;t t
 s,@OPENGL_LIBS@,$OPENGL_LIBS,;t t
-s,@EGREP@,$EGREP,;t t
 s,@GLUT_LIBS@,$GLUT_LIBS,;t t
 s,@GLUT32FILES@,$GLUT32FILES,;t t
 s,@NASLIBS@,$NASLIBS,;t t

configure.ac

@@ -88,6 +88,7 @@ AC_CHECK_TOOL(STRIP,strip,strip)
 AC_CHECK_TOOL(WINDRES,windres,false)
 AC_PROG_LN_S
 WINE_PROG_LN
+AC_PROG_EGREP
 AC_PATH_PROG(LDCONFIG, ldconfig, true, [/sbin /usr/sbin $PATH])
 AC_PROG_INSTALL
 dnl Prepend src dir to install path dir if it's a relative path